Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 105,739	$ 110,691
Marketable securities	13,172	44,528
Restricted cash	770	753
Trade receivables, related parties	235,837	224,713
Assets held for sale	301
Prepaid expenses and other current assets (including related parties of $274 and $274)	30,036	27,238
Total current assets	385,855	407,923
Property and equipment, net of accumulated depreciation of $197,645 and $194,448	71,475	61,362
Intangible assets subject to amortization, net of accumulated amortization of $87,968 and $75,992 (including related parties of $2,785 and $3,714)	51,784	61,811
Intangible assets not subject to amortization	195,174	207,453
Goodwill	90,672	86,991
Deferred income taxes	4,991	2,591
Operating leases right of use asset	43,941	44,413
Other assets	22,054	8,297
Total assets	865,946	880,841
Current liabilities
Current maturities of long-term debt	9,969	5,256
Accounts payable and accrued expenses (including related parties of $1,071 and $1,215)	254,802	237,415
Operating lease liabilities	7,282	5,570
Total current liabilities	272,053	248,241
Long-term debt, less current maturities, net of unamortized debt issuance costs of $1,116 and $1,221	199,552	207,292
Long-term operating lease liabilities	45,665	42,151
Other long-term liabilities	23,009	30,198
Deferred income taxes	59,381	67,590
Total liabilities	599,660	595,472
Commitments and contingencies (note 13)
Redeemable noncontrolling interest	43,758
Stockholders' equity
Additional paid-in capital	743,246	776,298
Accumulated deficit	(519,812)	(504,375)
Accumulated other comprehensive income (loss)	(915)	(1,510)
Total stockholders' equity	222,528	270,422
Noncontrolling interest		14,947
Total equity	222,528	285,369
Total liabilities, redeemable noncontrolling interest and equity	865,946	880,841
Class A common stock
Stockholders' equity
Common stock	8	8
Class U common stock
Stockholders' equity
Common stock	$ 1	$ 1