Goodwill and Other Intangible Assets - Finite-Lived Intangible Assets Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
Gross amount of intangible assets:
Beginning balance	$ 145,212	$ 145,212	$ 145,212
Additions due to acquisitions	0	0	0
Ending balance	145,212	145,212	145,212
Accumulated amortization:
Beginning balance	(75,641)	(71,761)	(59,705)
Amortization	(3,593)	(3,880)	(4,143)
Ending balance	(79,234)	(75,641)	(63,848)
Net intangible assets	$ 65,978	$ 69,571	$ 81,364