Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 110,691	$ 185,094
Marketable securities	44,528
Restricted cash	753	749
Trade receivables (including related parties of $5,814 and $8,162), net of allowance for doubtful accounts of $4,747 and $6,398	224,713	201,747
Assets held for sale		1,963
Prepaid expenses and other current assets (including related parties of $274 and $274)	27,238	18,925
Total current assets	407,923	408,478
Property and equipment, net of accumulated depreciation of $194,448 and $183,930	61,362	62,498
Intangible assets subject to amortization, net of accumulated amortization of $75,992 and $104,687 (including related parties of $3,714 and $4,642)	61,811	64,034
Intangible assets not subject to amortization	207,453	209,053
Goodwill	86,991	71,708
Deferred income taxes	2,591	1,462
Operating leases right of use asset	44,413	25,582
Other assets	8,297	8,527
Total assets	880,841	851,342
Current liabilities
Current maturities of long-term debt	5,256	4,903
Accounts payable and accrued expenses (including related parties of $1,215 and $1,920)	237,415	212,655
Operating lease liabilities	5,570	7,304
Total current liabilities	248,241	224,862
Long-term debt, less current maturities, net of unamortized debt issuance costs of $1,221 and $1,851	207,292	207,416
Long-term operating lease liabilities	42,151	20,988
Other long-term liabilities	30,198	72,930
Deferred income taxes	67,590	68,220
Total liabilities	595,472	594,416
Commitments and contingencies (note 13)
Stockholders' equity
Additional paid-in capital	776,298	780,388
Accumulated deficit	(504,375)	(522,494)
Accumulated other comprehensive income (loss)	(1,510)	(977)
Total stockholders' equity	270,422	256,926
Noncontrolling interest	14,947
Total equity	285,369	256,926
Total liabilities and equity	880,841	851,342
Class A common stock
Stockholders' equity
Common stock	8	6
Class B common stock
Stockholders' equity
Common stock		2
Class U common stock
Stockholders' equity
Common stock	$ 1	$ 1