Income Taxes - Summary of Amounts and Expiration Dates of Operating Loss, Charitable Contribution and Tax Credit Carryforwards (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Federal
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards, not subject to expiration	$ 384,813
Capital loss carryforwards - Federal	6,042
Charitable contribution carryforwards - Federal	1,956
State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards, subject to expiration	346,139
Net operating loss carryforwards, not subject to expiration	$ 252,222