Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 37,176	$ 6,198
Restricted cash	6,032	7,901
Accounts receivable, net of allowance for doubtful accounts of $5,444 and $4,975, respectively	214,949	261,400
Related party receivables	786	716
Inventories, net	17,428	19,047
Prepaid expenses and other current assets	33,359	23,663
Total current assets	309,730	318,925
Property, plant and equipment, net of accumulated depreciation of $181,310 and $176,995, respectively	91,846	113,637
Operating lease right-of-use assets, net	67,522	93,627
Goodwill	359,270	359,771
Intangible assets, net	304,958	342,443
Deferred income tax assets	12,192	12,032
Other noncurrent assets	24,907	17,889
Total assets	1,170,425	1,258,324
Current liabilities
Accounts payable	61,788	86,167
Related party payables	162	1,740
Income tax payable	1,695	352
Accrued liabilities	109,336	121,553
Accrued compensation and benefits	53,904	48,574
Accrued interest	23,274	48,769
Customer deposits	15,605	27,765
Deferred revenue	18,071	16,282
Obligation for claim payment	36,284	39,156
Current portion of finance lease liabilities	12,599	13,788
Current portion of operating lease liabilities	20,049	25,345
Current portion of long-term debts	38,042	36,490
Total current liabilities	390,809	465,981
Long-term debt, net of current maturities	1,491,969	1,398,385
Finance lease liabilities, net of current portion	13,448	20,272
Pension liabilities	24,885	25,681
Deferred income tax liabilities	7,682	7,996
Long-term income tax liabilities	2,808	2,806
Operating lease liabilities, net of current portion	50,085	73,282
Other long-term liabilities	16,202	6,962
Total liabilities	1,997,888	2,001,365
Commitments and Contingencies (Note 8)
Stockholders' equity (deficit)
Common stock, par value of $0.0001 per share; 1,600,000,000 shares authorized; 154,866,550 shares issued and 147,511,430 shares outstanding at September 30, 2020 and 153,638,836 shares issued and 150,851,689 shares outstanding at December 31, 2019	15	15
Preferred stock, par value of $0.0001 per share; 20,000,000 shares authorized; 3,290,050 shares issued and outstanding at September 30, 2020 and 4,294,233 shares issued and outstanding at December 31, 2019	1	1
Additional paid in capital	446,739	445,452
Less: Common Stock held in treasury, at cost; 7,355,120 shares at September 30, 2020 and 2,787,147 shares at December 31, 2019	(10,949)	(10,949)
Equity-based compensation	51,816	49,336
Accumulated deficit	(1,301,187)	(1,211,508)
Accumulated other comprehensive loss:
Foreign currency translation adjustment	(6,044)	(7,329)
Unrealized pension actuarial losses, net of tax	(7,854)	(8,059)
Total accumulated other comprehensive loss	(13,898)	(15,388)
Total stockholders' deficit	(827,463)	(743,041)
Total liabilities and stockholders' deficit	$ 1,170,425	$ 1,258,324