Income Taxes - Deferred Tax Valuation Allowance (Details) - SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation allowance, beginning of year	$ (111,835)	$ (92,197)	$ (73,410)
Increases recorded to income tax provision	(21,277)	(19,638)	(18,787)
Valuation allowance, end of year	$ (133,112)	$ (111,835)	$ (92,197)