CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net loss	$ (10,113)	$ (5,051)
Adjustments to reconcile net loss to net cash flows provided by (used in) operating activities, net of business acquisitions:
Depreciation and amortization	26,872	26,548
Amortization of deferred loan costs	925	483
Amortization of debt discount	3,303	0
Share-based employee compensation expense	3,558	3,458
Deferred income taxes	(3,332)	500
Excess tax benefits from share-based payment arrangements	(310)	(231)
(Increase) decrease in accounts receivable, net	(19,373)	26,613
Increase in other current assets	(940)	(3,917)
Decrease in accounts payable	(3,251)	(1,611)
Decrease in accrued salaries and benefits	(3,489)	(8,090)
Increase in other current liabilities	17,913	293
Other	7,548	(96)
Net cash flows provided by operating activities	19,311	38,899
Cash flows from investing activities:
Acquisition of property and equipment	(20,976)	(19,579)
Business acquisitions, net of cash acquired	0	(830)
Other	(3,829)	(3,843)
Net cash flows used in investing activities	(24,805)	(24,252)
Cash flows from financing activities:
Proceeds from borrowings of long-term debt	224,900	228,625
Payments of long-term debt	(233,554)	(254,252)
Deferred loan costs	(88)	(1,180)
Excess tax benefits from share-based payment arrangements	310	231
Exercise of stock options	1,265	2,164
Change in outstanding checks and other	12,114	11,366
Net cash flows provided by (used in) financing activities	4,947	(13,046)
Effect of exchange rate changes on cash	390	(1,109)
Net (decrease) increase in cash and cash equivalents	(157)	492
Cash and cash equivalents, beginning of period	2,584	1,759
Cash and cash equivalents, end of period	2,427	2,251
Noncash Activities:
Assets acquired through capital lease obligation	$ 5,479	$ 0