Segment Information (Revenues and Long-lived Assets by Geographic Information) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 341,873	$ 355,144	$ 994,297	$ 1,008,094
Long-lived assets	713,890		713,890		$ 789,551
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	291,164	297,123	841,396	837,656
Long-lived assets	644,327		644,327		726,128
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	8,629	8,284	24,780	24,596
Ireland
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	8,075	8,603	24,619	27,657
All other countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	34,005	$ 41,134	103,502	$ 118,185
Long-lived assets	$ 69,563		$ 69,563		$ 63,423