Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Income Taxes
Effective tax rate			10.00%
Provision (benefit) for income taxes	$ (762)	$ 95	$ (2,406)	$ 1,758
Statutory tax rate			21.00%
Income taxes paid	$ 700		$ 7,200
Deferred tax assets, foreign and state NOL carryforwards					$ 30,000
Foreign and state, net operating loss (NOL) carryforwards					119,500
Other foreign deductible carryforwards					64,700
Deferred tax assets, valuation allowance					$ 19,800