Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Tax Credit Carryforward [Line Items]
Excess tax benefit over compensation cost recognized, amount	$ 400	$ 800	$ 200
Operating loss carryforward not expected to be realized under ASC subtopic 740-10	12,200
Tax credit carryforwards	133	84
Tax credit carryforwards valuation allowance	9,330	9,375
Unrecognized tax benefits	4,069	5,663	$ 5,283	$ 5,271
Unrecognized tax benefits that would impact effective tax rate	2,400
Decrease on uncertain tax positions	2,200
Decrease in unrecognized tax benefits is reasonably possible	2,100
Deferred compensation	113	$ 94
Deferred tax assets, tax deferred expense	1,400
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Other	6,100
Federal
Tax Credit Carryforward [Line Items]
Net operating loss carryforwards	18,900
Tax credit carryforwards	100
State
Tax Credit Carryforward [Line Items]
Net operating loss carryforwards	20,700
Tax credit carryforwards	13,500
Tax credit carryforwards valuation allowance	$ 11,000