Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2021	Dec. 31, 2020
Income Tax Examination [Line Items]
Income tax expense (benefit)	$ (2,929)	$ (1,911)	$ (2,469)	$ (4,750)
Effective tax rate (as a percent)	(16.10%)	(39.00%)	(9.70%)	(27.30%)
Recognition of tax benefits, current year						$ 3,800
Recognition of tax benefits, prior years						$ 6,100
Release of unrecognized tax benefits due to lapse of statute of limitations	$ 3,500
Release of interest expense due to lapse of statute of limitations	$ 1,200
Forecast
Income Tax Examination [Line Items]
Recognition of tax benefits, current year					$ 4,600