Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating Loss Carryforwards [Line Items]
Undistributed earnings of foreign subsidiaries	$ 13,700
Deferred tax liability from outside basis difference		$ 400
GILTI			$ 200
Operating loss carryforwards, subject to expiration	15,300
Operating loss carryforwards, not subject to expiration	29,400
Valuation allowance	9,158	16,043
Change in valuation allowance	(6,800)
Change in deferred tax assets valuation allowance from acqusitions	(11,500)
Increase in deferred tax assets valuation allowance	4,700
Change in income tax expense from decrease in valuation allowance from acquisitions			$ 2,000
Decreases due to lapse in statute of limitations	211	$ 431
North America
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards obtained through acquisitions	87,100
Operating loss carryforwards	44,700
State
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	40,300
Operating loss carryforwards, subject to expiration	32,600
Operating loss carryforwards, not subject to expiration	7,700
Alternative Minimum Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
Refund from tax credit carryforward	2,200
Research Tax Credit Carryforward
Operating Loss Carryforwards [Line Items]
Tax credit carryforward	1,200
2020 Acquisitions
Operating Loss Carryforwards [Line Items]
Deferred tax liability	$ 213,800