Segment Information - Revenues and Long-lived Assets by Geographic Information (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	$ 352,664	$ 331,168	$ 322,559
Long-lived assets	53,560	68,376
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	274,814	256,853	249,429
Long-lived assets	43,727	50,966
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	45,157	40,303	37,191
Long-lived assets	7,128	10,249
Ireland
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	21,913	23,514	26,104
Long-lived assets	2,625	7,026
All other countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	10,780	10,498	9,835
Long-lived assets	80	135
Foreign countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	77,850	74,315	$ 73,130
Long-lived assets	$ 9,833	$ 17,410