Background (Notes)	6 Months Ended
Background (Notes)	Jun. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Background	DESCRIPTION OF ORGANIZATION AND BUSINESS OPERATIONS Background Post Holdings Partnering Corporation (the “Company”) is a blank check company incorporated in Delaware on January 27, 2021. The Company was incorporated for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, reorganization or similar partnering transaction with one or more businesses that the Company has not yet identified (a “Partnering Transaction”). As of June 30, 2022, the Company had not commenced any operations. All activity for the period from January 27, 2021 (inception) through June 30, 2022 related to the Company’s formation and its initial public offering, which is described below, and subsequent to the initial public offering, related to the Company’s search for potential target businesses. The Company will not generate any operating revenue until after the completion of its Partnering Transaction, at the earliest. The Company generates non-operating income in the form of interest income from the proceeds received in the initial public offering, and non-operating unrealized gains and losses related to derivative instruments initially recorded at the initial public offering date (see Note 7). The registration statement for the Company’s initial public offering was declared effective on May 25, 2021. On May 28, 2021, the Company consummated its initial public offering of 30,000,000 units (the “Units”). Each Unit consists of one share of Series A common stock, $0.0001 par value per share (the “Series A common stock” and such shares, the “Public Shares”) and one-third of one redeemable warrant (the “Public Warrants”). Each whole Public Warrant entitles the holder to purchase one share of Series A common stock at an exercise price of $11.50 per share, subject to adjustment. The Units were sold at an offering price of $10.00 per Unit, generating total gross proceeds of $300,000,000. The Units began trading on the New York Stock Exchange (the “NYSE”) under the ticker symbol “PSPC.U” on May 26, 2021. As of July 16, 2021, holders of the Units could elect to separately trade their shares of Series A common stock and Public Warrants, with the shares of Series A common stock and the Public Warrants listed on the NYSE under the symbols “PSPC” and “PSPC WS”, respectively. On June 3, 2021, the Company issued an additional 4,500,000 Units (the “Over-Allotment Units”) pursuant to the underwriters’ exercise in full of their over-allotment option in connection with the initial public offering. The Over-Allotment Units were priced at $10.00 per Over-Allotment Unit, generating total gross proceeds of $45,000,000. The term “IPO” as used herein generally refers to the consummation of the initial public offering on May 28, 2021 and the underwriters’ exercise in full of their over-allotment option on June 3, 2021. In fiscal 2021, the Company incurred offering costs in connection with the IPO of $17,887,856, of which $10,675,000 was for deferred underwriting commissions that will become payable to the underwriters solely in the event that the Company completes a Partnering Transaction. On May 28, 2021, in conjunction with the closing of the initial public offering, the Company consummated the private sale of 1,000,000 units of the Company (the “Private Placement Units”) at a purchase price of $10.00 per Private Placement Unit to the Company’s sponsor, PHPC Sponsor, LLC (the “Sponsor”), generating total gross proceeds of $10,000,000 (see Note 4). Concurrently with the sale of the Over-Allotment Units, the Sponsor purchased an additional 90,000 Private Placement Units for total gross proceeds of $900,000. Each Private Placement Unit consists of one share of Series A common stock (“the “Private Placement Shares”) and one-third of one warrant, each whole warrant entitling the Sponsor to purchase one share of Series A common stock at an exercise price of $11.50 per share (the “Private Placement Warrants”). The term “Private Placement” as used herein generally refers to the consummation of the private sale of Private Placement Units on May 28, 2021 and the private sale of Private Placement Units in conjunction with the sale of the Over-Allotment Units on June 3, 2021. The Private Placement Warrants are identical to the Public Warrants included in the Units, except that such Private Placement Warrants (i) may be exercised for cash or on a cashless basis, (ii) are not subject to being called for redemption (except in certain circumstances when the Public Warrants are called for redemption and a certain price per share of Series A common stock threshold is met) and (iii) subject to certain limited exceptions, are subject to transfer restrictions until 30 days following the consummation of the Company’s Partnering Transaction. If the Private Placement Warrants are held by holders other than the Sponsor or its permitted transferees, the Private Placement Warrants will be redeemable by the Company in all redemption scenarios and exercisable by holders on the same basis as the Public Warrants. The issuance of the Private Placement Units, and the shares of Series A common stock and the Private Placement Warrants underlying such Private Placement Units, was made pursuant to an exemption from registration contained in Section 4(a)(2) of the Securities Act of 1933, as amended (the “Securities Act”). Of the gross proceeds received from the IPO and Private Placement, $345,000,000 (or $10.00 per Unit sold in the IPO) was deposited in a trust account (the “Trust Account”) located in the United States (the “U.S.”) with Continental Stock Transfer & Trust Company acting as trustee. Substantially all of the net proceeds are intended to be applied generally toward consummating a Partnering Transaction. There is no assurance that the Company will be able to complete a Partnering Transaction successfully. The Company must complete one or more Partnering Transactions having an aggregate fair market value of at least 80% of the net assets held in the Trust Account (excluding the amount of deferred underwriting commissions and taxes payable on the interest earned on the Trust Account) at the time of the signing of the agreement to enter into the Partnering Transaction. However, the Company will only complete a Partnering Transaction if the post-transaction company owns or acquires 50% or more of the outstanding voting power of the outstanding capital stock of the target or otherwise acquires a controlling interest in the target sufficient for it not to be required to register as an investment company under the Investment Company Act of 1940, as amended (the “Investment Company Act”). The Company will provide the holders of Public Shares (the “Public Stockholders”) with the opportunity to redeem all or a portion of their Public Shares upon the completion of a Partnering Transaction either (a) in connection with a stockholder meeting called to approve the Partnering Transaction or (b) by means of a tender offer. The decision as to whether the Company will seek stockholder approval of a Partnering Transaction or conduct a tender offer will be made by the Company, solely in its discretion. The Public Stockholders will be entitled to redeem their Public Shares for a pro rata portion of the amount then in the Trust Account (at $10.00 per Public Share, plus any pro rata interest earned on the funds held in the Trust Account and not previously released to the Company to pay taxes). The per-share amount to be distributed to Public Stockholders who redeem their Public Shares will not be reduced by the deferred underwriting commissions the Company will pay to the underwriters (See Note 6). The Public Shares were classified as temporary equity in accordance with Accounting Standards Codification (“ASC”) Topic 480, “Distinguishing Liabilities from Equity” (“ASC 480”). The Company will proceed with a Partnering Transaction if the Company has net tangible assets of at least $5,000,001 upon consummation of a Partnering Transaction and only if a majority of the common shares, represented in person or by proxy and entitled to vote thereon, voted at a stockholder meeting are voted in favor of the Partnering Transaction. If a stockholder vote is not required by law and the Company does not decide to hold a stockholder vote for business or other reasons, the Company will, pursuant to the amended and restated certificate of incorporation which the Company adopted upon the consummation of the IPO (the “Amended and Restated Certificate of Incorporation”), conduct the redemptions pursuant to the tender offer rules of the U.S. Securities and Exchange Commission (the “SEC”) and file tender offer documents with the SEC prior to completing a Partnering Transaction. If, however, stockholder approval of the Partnering Transaction is required by law, or the Company decides to obtain stockholder approval for business or other reasons, the Company will offer to redeem shares in conjunction with a proxy solicitation pursuant to the proxy rules and not pursuant to the tender offer rules of the SEC. Additionally, each Public Stockholder may elect to redeem its Public Shares irrespective of whether it votes for or against the proposed Partnering Transaction or does not vote at all. If the Company seeks stockholder approval in connection with a Partnering Transaction, the initial stockholders (as defined below) agreed to vote their Founder Shares (as defined below in Note 4), the shares underlying the Private Placement Units, and any Public Shares purchased during or after the IPO in favor of a Partnering Transaction. Subsequent to the consummation of the IPO, the Company adopted an insider trading policy which requires insiders to: (i) refrain from purchasing shares during certain blackout periods and when they are in possession of any material non-public information and (ii) clear all trades with the Company’s legal counsel prior to execution. In addition, the initial stockholders agreed to waive their redemption rights with respect to their Founder Shares and the shares underlying the Private Placement Units in connection with the completion of a Partnering Transaction. Notwithstanding the foregoing, if the Company seeks stockholder approval of its Partnering Transaction and does not conduct redemptions in connection with its Partnering Transaction pursuant to the tender offer rules, the Amended and Restated Certificate of Incorporation provides that a Public Stockholder, together with any affiliate of such stockholder or any other person with whom such stockholder is acting in concert or as a “group” (as defined under Section 13 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)), will be restricted from redeeming its shares with respect to more than an aggregate of 15% of the shares of the Series A common stock sold in the IPO without the prior consent of the Company. The Sponsor and the Company’s executive officers and directors (the “initial stockholders”) agreed not to propose an amendment to the Amended and Restated Certificate of Incorporation that would modify the substance or timing of the Company’s obligation to provide holders of the Public Shares the right to have their shares redeemed in connection with a Partnering Transaction or to redeem 100% of the Public Shares if the Company does not complete its Partnering Transaction within 24 months from the closing of the initial public offering, or May 28, 2023, or 27 months, or August 28, 2023, following an agreement in principle event, which means the Company has executed a letter of intent, agreement in principle or definitive agreement for a Partnering Transaction within 24 months from the closing of the initial public offering but has not completed the Partnering Transaction within such 24-month period (such 24-month or 27-month period, the “Combination Period”) or with respect to any other provision relating to the rights of Public Stockholders, unless the Company provides the Public Stockholders with the opportunity to redeem their shares of Series A common stock in conjunction with any such amendment. If the Company has not completed a Partnering Transaction within the Combination Period, the Company will (a) cease all operations except for the purpose of winding up; (b) as promptly as reasonably possible but not more than ten business days thereafter, redeem the Public Shares, at a per-share price, payable in cash, equal to the aggregate amount then on deposit in the Trust Account, including interest earned on the funds held in the Trust Account and not previously released to the Company to pay for its taxes, if any (less up to $100,000 of interest to pay dissolution expenses), divided by the number of the then-outstanding Public Shares, which redemption will completely extinguish the Public Stockholders’ rights as stockholders (including the right to receive further liquidation distributions, if any); and (c) as promptly as reasonably possible following such redemption, subject to the approval of the Company’s remaining stockholders and its board of directors, liquidate and dissolve, subject in the case of clauses (b) and (c) to the Company’s obligations under Delaware law to provide for claims of creditors and the requirements of other applicable law. The initial stockholders agreed to waive their liquidation rights with respect to the Founder Shares and the shares underlying the Private Placement Units held by them if the Company fails to complete a Partnering Transaction within the Combination Period. However, the initial stockholders will be entitled to liquidating distributions from the Trust Account with respect to any Public Shares they acquire in or after the IPO if the Company fails to complete a Partnering Transaction within the Combination Period. The underwriters agreed to waive their rights to their deferred underwriting commission (see Note 6) held in the Trust Account in the event the Company does not complete a Partnering Transaction within the Combination Period and, in such event, such amounts will be included with the other funds held in the Trust Account that will be available to fund the redemption of the Public Shares. In the event of such distribution, it is possible that the per share value of the assets remaining available for distribution (including Trust Account assets) will be only $10.00 per share initially held in the Trust Account. In order to protect the amounts held in the Trust Account, the Sponsor agreed to be liable to the Company if and to the extent any claims by a third party for services rendered or products sold to the Company, or a prospective target business with which the Company has discussed entering into a transaction agreement, reduce the amount of funds in the Trust Account to below the lesser of (i) $10.00 per Public Share and (ii) the actual amount per Public Share held in the Trust Account as of the date of the liquidation of the Trust Account if less than $10.00 per Public Share due to reductions in the value of the trust assets. This liability will not apply with respect to any claims by a third party who executed a waiver of any right, title, interest or claim of any kind in or to any monies held in the Trust Account or to any claims under the Company’s indemnity of the underwriters of the IPO against certain liabilities, including liabilities under the Securities Act. There can be no guarantee that the Company will be successful in obtaining such waivers from its vendors, service providers and prospective target businesses. Moreover, in the event that an executed waiver is deemed to be unenforceable against a third party, the Sponsor will not be responsible to the extent of any liability for such third party claims. The Company will seek to reduce the possibility that the Sponsor will have to indemnify the Trust Account due to claims of creditors by endeavoring to have all vendors, service providers (excluding the Company’s independent registered public accounting firm), prospective target businesses or other entities with which the Company does business execute agreements with the Company waiving any right, title, interest or claim of any kind in or to monies held in the Trust Account. Going Concern As of June 30, 2022, less than twelve months remained in the Combination Period in which the Company had to complete a Partnering Transaction. The Company evaluated its ability to continue as a going concern in accordance with ASC Topic 205-30, “Liquidation Basis of Accounting.” The Company believes that it has sufficient working capital and borrowing capacity from the Sponsor or an affiliate of the Sponsor, or certain of its officers and directors, to meet its liquidity needs through the Combination Period. It is uncertain that the Company will be able to complete a Partnering Transaction by the end of the Combination Period, and if a Partnering Transaction is not completed by the end of the Combination Period, there will be a mandatory liquidation and subsequent dissolution of the Company (refer above for information on the liquidating distributions from the Trust Account to holders of the Public Shares upon dissolution). The Company has determined that the mandatory liquidation, should a Partnering Transaction not occur, and potential subsequent dissolution, raises substantial doubt about the Company’s ability to continue as a going concern. As of June 30, 2022, no adjustments had been made to the carrying amounts of assets or liabilities that might be necessary should the Company be required to liquidate at the end of the Combination Period.

Post Holdings Partnering Corp 10-Q