v3.26.1

Investments - Schedule of Investments Fair Values and Gross Unrealized (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Less than 12 months, Fair Value	$ 5,612	$ 36,312
Less than 12 months, Unrealized Loss	(2)	(44)
12 months or Greater, Fair Value	0	0
12 months or Greater, Unrealized Loss	0	0
Total, Fair Value	5,612	36,312
Total, Unrealized Loss	(2)	(44)
Commercial Paper [Member]
Less than 12 months, Fair Value	965	3,869
Less than 12 months, Unrealized Loss	(1)	(2)
12 months or Greater, Fair Value	0	0
12 months or Greater, Unrealized Loss	0	0
Total, Fair Value	965	3,869
Total, Unrealized Loss	(1)	(2)
Asset Backed Securities [Member]
Less than 12 months, Fair Value	1,082
Less than 12 months, Unrealized Loss	0
12 months or Greater, Fair Value	0
12 months or Greater, Unrealized Loss	0
Total, Fair Value	1,082
Total, Unrealized Loss	0
Corporate Debt Securities [Member]
Less than 12 months, Fair Value	3,565	32,443
Less than 12 months, Unrealized Loss	(1)	(42)
12 months or Greater, Fair Value	0	0
12 months or Greater, Unrealized Loss	0	0
Total, Fair Value	3,565	32,443
Total, Unrealized Loss	$ (1)	$ (42)

Available-for-Sale Securities, Continuous Unrealized Loss Positions, 12 Months or Longer, Fair Value

+ References

No definition available.

+ Details

Name:	prok_AvailableForSaleSecuritiesContinuousUnrealizedLossPositions12MonthsOrLongerFairValue
Namespace Prefix:	prok_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Available-for-Sale Securities, Continuous Unrealized Loss Positions, Fair Value

+ References

No definition available.

+ Details

Name:	prok_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionsFairValue
Namespace Prefix:	prok_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Available-for-Sale Securities, Continuous Unrealized Loss Positions, Less than 12 Months, Fair Value

+ References

No definition available.

+ Details

Name:	prok_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionsLessThan12MonthsFairValue
Namespace Prefix:	prok_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479081/326-30-55-8

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-7

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479106/326-30-50-5

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position without allowance for credit loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479081/326-30-55-8

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-6

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479106/326-30-50-4

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CommercialPaperMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

PROKIDNEY CORP. 10-K