Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company's tax provision for interim periods is determined using an estimate of its annual effective tax rate, adjusted for discrete items. The Company’s reported effective income tax rate was (22.8)% and 125.9% for the three months ended June 30, 2020 and 2019, respectively. The Company’s reported effective income tax rate was (8.7)% and (70.2)% for the six months ended June 30, 2020 and 2019, respectively. The Company’s effective income tax rate differs from the U.S. federal statutory rate each year due to certain operations that are subject to tax incentives, state and local taxes, valuation allowances, impacts of the Tax Reform Act, and foreign tax rates that are different than the U.S. federal statutory tax rate. In addition, the effective tax rate can be impacted each period by discrete factors and events such as a write-off of a deferred tax asset for stock‑based compensation due to the expiration of unexercised stock options and prior year provision to return adjustments. Valuation allowances are recorded to reduce deferred tax assets when it is more likely than not that a tax benefit will expire unutilized. At the end of each reporting period, the Company reviews the realizability of its deferred tax assets. There were no material valuation adjustments for the three months ended June 30, 2020 and 2019. Additionally, the Company continues to incur losses in jurisdictions which have valuation allowances against tax loss carryforwards, so a tax benefit has not been recognized in the financial statements for these losses.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

INNERWORKINGS INC 10-Q