Business Segments and Customer Information - Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 750,853	$ 661,659	$ 752,627
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	668,892	598,142	659,451
Other Countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 81,961	$ 63,517	$ 93,176