Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net Income (loss)	$ (18,639)	$ (44,962)
Adjustments to reconcile net income (loss) to net cash provided by (used) in operating activities:
Depreciation	14,646	11,263
Amortization of intangible assets	9,117	13,740
Amortization of deferred financing costs and original issue discount/premium	4,723	4,751
Payment-in-kind interest	8,025	15,677
(Gain) loss on disposal of assets	447	557
Stock-based compensation expense	1,417	470
Gain on extinguishment of debt	(221)
Deferred taxes	5,736	2,988
Other non-cash adjustments	803	2,509
Changes in assets and liabilities, net
Accounts receivable, net	31,171	(6,235)
Unbilled services	(53,822)	(21,522)
Prepaid expenses and other current assets	(364)	(2,394)
Accrued payroll, accounts payable and accrued expenses	(11,910)	9,329
Income tax receivable and non-current income tax liability	(202)	1,103
Deferred revenue and client advances	2,355	16,898
Other, net	(2,902)	(2,021)
Net cash provided by (used in) operating activities	(9,620)	2,151
Cash flows from investing activities:
Purchases of property and equipment	(6,170)	(9,799)
Proceeds from vehicle sales and rebates on vehicle leases	3,979	3,093
Other, net	(966)	(238)
Net cash provided by (used in) investing activities	(3,157)	(6,944)
Cash flows from financing activities:
Repayments on capital leases and other financing arrangements	(8,907)	(8,924)
Repurchase of Notes	(22,790)
Borrowings under line of credit		17,000
Repayment on line of credit		(17,000)
Payment on installment note and contingent consideration related to acquisition	(2,174)	(1,917)
Other, net	396	25
Net cash provided by (used in) financing activities	(33,475)	(10,816)
Effects of foreign currency exchange rate changes on cash	2,048	(2,797)
Net increase (decrease) in cash and cash equivalents	(44,204)	(18,406)
Cash and cash equivalents, beginning of period	121,317	57,059
Cash and cash equivalents, end of period	77,113	38,653
Supplemental disclosure of cash flow information:
Cash paid for interest	31,281	32,888
Cash paid (refund) for income taxes	2,714	526
Supplemental disclosure of non-cash activities:
Vehicles acquired through capital lease agreements	10,667	12,436
Accrued capital expenditures	$ 884	$ 2,487