Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets
Cash and cash equivalents	$ 50,261	$ 20,775
Restricted cash	42,916	27,285
Accounts receivable, net of allowance for doubtful accounts of $6,067 and $6,049, respectively	99,350	184,102
Related party receivables and prepaid expenses	715	715
Inventories, net	16,225	15,215
Prepaid expenses and other current assets	29,785	31,799
Total current assets	239,252	279,891
Property, plant and equipment, net of accumulated depreciation of $200,064 and $196,683, respectively	70,486	73,449
Operating lease right-of-use assets, net	49,124	53,937
Goodwill	358,172	358,323
Intangible assets, net	222,634	244,539
Deferred income tax assets	1,629	2,109
Other noncurrent assets	26,273	24,775
Total assets	967,570	1,037,023
Current liabilities
Accounts payable	70,093	61,744
Related party payables	1,460	1,484
Income tax payable	2,273	3,551
Accrued liabilities	96,341	113,519
Accrued compensation and benefits	54,618	60,860
Accrued interest	64,658	10,075
Customer deposits	20,070	17,707
Deferred revenue	15,448	16,617
Obligation for claim payment	60,001	46,902
Current portion of finance lease liabilities	5,270	6,683
Current portion of operating lease liabilities	14,355	15,923
Current portion of long-term debts	124,921	144,828
Total current liabilities	529,508	499,893
Long-term debt, net of current maturities	975,457	1,104,399
Finance lease liabilities, net of current portion	8,374	9,156
Pension liabilities, net	25,463	28,383
Deferred income tax liabilities	12,969	11,594
Long-term income tax liabilities	2,815	3,201
Operating lease liabilities, net of current portion	37,111	41,170
Other long-term liabilities	4,941	5,999
Total liabilities	1,596,638	1,703,795
Commitments and Contingencies (Note 8)
Stockholders' equity (deficit)
Common Stock, par value of $0.0001 per share; 1,600,000,000 shares authorized; 40,381,860 shares issued and 40,259,274 shares outstanding at June 30, 2022 and 13,382,333 shares issued and 13,259,748 shares outstanding at December 31, 2021	91	37
Additional paid in capital	1,008,300	838,853
Less: Common Stock held in treasury, at cost; 122,585 shares at June 30, 2022 and December 31, 2021	(10,949)	(10,949)
Equity-based compensation	56,761	56,123
Accumulated deficit	(1,668,583)	(1,532,428)
Accumulated other comprehensive loss:
Foreign currency translation adjustment	(4,853)	(7,463)
Unrealized pension actuarial losses, net of tax	(9,836)	(10,946)
Total accumulated other comprehensive loss	(14,689)	(18,409)
Total stockholders' deficit	(629,068)	(666,772)
Total liabilities and stockholders' deficit	967,570	1,037,023
Series A Preferred Stock
Stockholders' equity (deficit)
Preferred stock	1	1
Series B Preferred Stock
Stockholders' equity (deficit)
Preferred stock