Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Net operating loss and other carryforwards	$ 15,762	$ 19,513
Tax credit carryforwards	4,743	4,222
Accrued expenses	14,629	10,702
Allowance for bad debt	2,003	1,445
Share-based compensation expense	6,097	3,885
Operating lease liabilities	6,320	16,756
Basis difference in fixed assets	22,191	14,642
Deferred revenue	2,420	2,994
State taxes	1,974	4,447
Other	2,468	3,920
Deferred tax assets, gross	78,607	82,526
Less: valuation allowance	(1,720)	(1,699)	$ (1,812)	$ (8,262)
Total deferred tax assets	76,887	80,827
Deferred tax liabilities:
Operating lease right-of-use assets	(4,618)	(14,008)
Basis difference in intangible assets	(86,712)	(101,797)
Unrealized gains on investments	(13,512)	(24,123)
Prepaid insurance	(2,835)	(2,744)
Other	(5,982)	(8,639)
Total deferred tax liabilities	(113,659)	(151,311)
Net deferred tax liabilities	$ (36,772)	$ (70,484)