Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 8,262	$ 25,615
Restricted cash	4,998	18,239
Accounts receivable, net of allowance for doubtful accounts of $5,913 and $4,359 respectively	278,064	270,812
Inventories, net	16,321	16,220
Prepaid expenses and other current assets	25,330	25,015
Total current assets	332,975	355,901
Property, plant and equipment, net	129,621	132,986
Operating lease right-of-use asset, net	100,727
Goodwill	708,285	708,258
Intangible assets, net	397,412	407,021
Deferred income tax assets	16,202	16,225
Other noncurrent assets	17,667	19,391
Total assets	1,702,889	1,639,782
Current liabilities
Accounts payable	90,924	99,853
Related party payables	6,184	7,735
Income tax payable	4,898	1,996
Accrued liabilities	63,138	66,008
Accrued compensation and benefits	57,961	54,583
Accrued interest	23,928	49,071
Customer deposits	28,410	34,235
Deferred revenue	19,966	16,504
Obligation for claim payment	46,063	56,002
Current portion of finance lease obligations	15,961	17,498
Current portion of operating lease obligations	27,368
Current portion of long-term debt	32,821	29,237
Total current liabilities	417,622	432,722
Long-term debt, net of current maturities	1,336,152	1,306,423
Finance lease obligations, net of current portion	27,231	26,738
Pension liability	25,514	25,269
Deferred income tax liabilities	12,439	11,212
Long-term income tax liability	3,158	3,024
Operating lease right-of-use liability, net of current portion	78,290
Other long-term liabilities	6,747	15,400
Total liabilities	1,907,153	1,820,788
Commitment and Contingencies (Note 9)
Stockholders' equity (deficit)
Common stock, par value of $0.0001 per share; 1,600,000,000 shares authorized; 152,692,140 shares issued and 150,142,955 outstanding at March 31, 2019 and December 31, 2018	15	15
Preferred stock, par value of $0.0001 per share; 20,000,000 shares authorized; 4,569,233 shares issued and outstanding at March 31, 2019 and December 31, 2018	1	1
Additional paid in capital	482,018	482,018
Less: common stock held in treasury, at cost; 2,549,185 shares at March 31, 2019 and December 31, 2018	(10,342)	(10,342)
Equity-based compensation	44,529	41,731
Accumulated deficit	(707,787)	(678,563)
Accumulated other comprehensive loss:
Foreign currency translation adjustment	(3,173)	(6,565)
Unrealized pension actuarial losses, net of tax	(9,525)	(9,301)
Total accumulated other comprehensive loss	(12,698)	(15,866)
Total stockholders’ deficit	(204,264)	(181,006)
Total liabilities and stockholders’ deficit	$ 1,702,889	$ 1,639,782