Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets
Cash and cash equivalents	$ 110,624	$ 110,691
Marketable securities	18,063	44,528
Restricted cash	765	753
Trade receivables, (including related parties of $10,334 and $5,814) net of allowance for doubtful accounts of $7,346 and $6,572	211,175	224,713
Assets held for sale	1,223
Prepaid expenses and other current assets (including related parties of $274 and $274)	43,404	27,238
Total current assets	385,254	407,923
Property and equipment, net of accumulated depreciation of $199,275 and $194,448	67,750	61,362
Intangible assets subject to amortization, net of accumulated amortization of $85,058 and $75,992 (including related parties of $3,017 and $3,714)	55,706	61,811
Intangible assets not subject to amortization	207,453	207,453
Goodwill	90,672	86,991
Deferred income taxes	2,591	2,591
Operating leases right of use asset	45,159	44,413
Other assets	21,550	8,297
Total assets	876,135	880,841
Current liabilities
Current maturities of long-term debt	8,643	5,256
Accounts payable and accrued expenses (including related parties of $1,222 and $1,215)	240,417	237,415
Operating lease liabilities	7,150	5,570
Total current liabilities	256,210	248,241
Long-term debt, less current maturities, net of unamortized debt issuance costs of $1,180 and $1,221	201,301	207,292
Long-term operating lease liabilities	46,849	42,151
Other long-term liabilities	17,294	30,198
Deferred income taxes	68,464	67,590
Total liabilities	590,118	595,472
Commitments and contingencies (note 6)
Redeemable noncontrolling interest	47,301
Stockholders' equity
Additional paid-in capital	742,040	776,298
Accumulated deficit	(501,604)	(504,375)
Accumulated other comprehensive income (loss)	(1,729)	(1,510)
Total stockholders' equity	238,716	270,422
Noncontrolling interest		14,947
Total equity	238,716	285,369
Total liabilities and equity	876,135	880,841
Class A common stock
Stockholders' equity
Common stock	8	8
Class U common stock
Stockholders' equity
Common stock	$ 1	$ 1