Summary of Significant Accounting Policies - Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes Disclosure [Line Items]
Deferred tax asset valuation allowance	$ 2,128	$ 7,664	$ 5,695	$ 5,590
Change in deferred tax asset valuation allowance	5,500
Income tax benefit	(1,993)	$ 3,022	$ 2,164
COVID-19 [ Member]
Income Taxes Disclosure [Line Items]
Deferred tax asset valuation allowance	5,200
Income Tax Expense [Member]
Income Taxes Disclosure [Line Items]
Change in deferred tax asset valuation allowance	5,500
Income tax benefit	$ 5,100