Intangibles - Amortizable Intangible Assets Other Than Goodwill (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Indefinite-lived licenses	$ 104,214	$ 100,138
Noncompetition agreements	70,495	84,022
Customer relationships and other	63,714	52,566
Intangible assets, gross (excluding goodwill)	238,423	236,726
Less accumulated amortization	(60,730)	(70,141)
Total intangible assets	$ 177,693	$ 166,585