Income Taxes - Reconciliation of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Computed income tax (benefit) expense at statutory federal income tax rate	$ (75,780)	$ 5,483	$ 13,665
State income tax (benefit), net of federal benefit	(4,138)	(173)	3,489
Deemed mandatory repatriation state tax			(909)
Deemed mandatory repatriation federal tax, net of foreign tax credit			(1,690)
Remeasurement of deferred taxes due to change in tax rates		(4,517)	(510)
Foreign tax rate differential	(401)	3,122	4,138
U.S. tax (benefit) on current year foreign earnings, net of foreign tax credits		(1,792)	(223)
Goodwill impairment	16,471
Change in valuation allowance	77,369	920	(653)
Other adjustments, net	725	(537)	(212)
Income tax expense	$ 14,246	$ 2,506	$ 17,095
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Computed income tax (benefit) expense at statutory federal income tax rate	21.00%	21.00%	21.00%
State income tax (benefit), net of federal benefit	1.10%	(0.20%)	5.40%
Deemed mandatory repatriation state tax rate	0.00%	0.00%	(1.40%)
Deemed mandatory repatriation federal tax, net of foreign tax credit, tax rate	0.00%	0.00%	(2.60%)
Remeasurement of deferred taxes due to change in tax rates, tax rate	0.00%	(17.30%)	(0.80%)
Foreign tax differentials rate	0.10%	12.00%	6.40%
U.S. tax (benefit) on current year foreign earnings, net of foreign tax credits	(0.00%)	(6.90%)	(0.30%)
Goodwill impairment	(4.60%)	0.00%	0.00%
Change in valuation allowance, tax rate	(21.30%)	1.80%	(1.00%)
Other adjustments, net, tax rate	(0.20%)	(0.80%)	(0.30%)
Income tax expense	(3.90%)	9.60%	26.40%