Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 25,615	$ 39,000
Restricted cash	18,239	42,489
Accounts receivable, net of allowance for doubtful accounts of $4,359 and $3,725 respectively	270,812	229,704
Inventories, net	16,220	11,922
Prepaid expenses and other current assets	25,015	24,596
Total current assets	355,901	347,711
Property, plant and equipment, net	132,986	132,908
Goodwill	708,258	747,325
Intangible assets, net	407,021	464,984
Deferred income tax assets	16,225	9,019
Other noncurrent assets	19,391	12,891
Total assets	1,639,782	1,714,838
Current liabilities
Accounts payable	99,853	81,263
Related party payables	7,735	14,445
Income tax payable	1,996	3,612
Accrued liabilities	66,008	49,383
Accrued compensation and benefits	54,583	46,925
Accrued interest	49,071	55,102
Customer deposits	34,235	31,656
Deferred revenue	16,504	12,709
Obligation for claim payment	56,002	42,489
Current portion of capital lease obligations	17,498	15,611
Current portion of long-term debt	29,237	20,565
Total current liabilities	432,722	373,760
Long-term debt, net of current maturities	1,306,423	1,276,094
Capital lease obligations, net of current maturities	26,738	25,958
Pension liability	25,269	25,496
Deferred income tax liabilities	11,212	5,362
Long-term income tax liability	3,024	3,470
Other long-term liabilities	15,400	14,704
Total liabilities	1,820,788	1,724,844
Commitment and Contingencies (Note 12)
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 shares outstanding at December 31, 2018 and 150,578,451 shares issued and 150,529,151 outstanding at December 31, 2017	15	15
Preferred stock, par value of $0.0001 per share; 20,000,000 shares authorized; 4,569,233 shares issued and outstanding at December 31, 2018 and 6,194,233 shares issued or outstanding at December 31, 2017	1	1
Additional paid in capital	482,018	482,018
Less: common stock held in treasury, at cost; 2,549,185 shares at December 31, 2018 and 49,300 shares at December 31, 2017	(10,342)	(249)
Equity-based compensation	41,731	34,085
Accumulated deficit	(678,563)	(514,628)
Accumulated other comprehensive loss:
Foreign currency translation adjustment	(6,565)	(194)
Unrealized pension actuarial losses, net of tax	(9,301)	(11,054)
Total accumulated other comprehensive loss	(15,866)	(11,248)
Total stockholders’ deficit	(181,006)	(10,006)
Total liabilities and stockholders’ deficit	$ 1,639,782	$ 1,714,838

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.