CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) [Abstract]
Revenues	$ 176,777		$ 165,165
Cost of services (exclusive of depreciation and amortization of $9,372, and $8,825, respectively, included below)	148,148		141,257
Selling, general and administrative expenses	16,431		13,098
Depreciation and amortization	13,336		13,533
Legal settlement charges	9,363		0
Operating loss	(10,501)		(2,723)
Interest expense	4,383		3,321
Loss before income taxes	(14,884)		(6,044)
Income tax benefit	(5,288)		(2,095)
Net loss	(9,596)		(3,949)
Loss per share:
Basic (in dollars per share)	$ (0.27)		$ (0.12)
Diluted (in dollars per share)	$ (0.27)	[1]	$ (0.12)	[1]
Comprehensive loss	$ (9,253)		$ (3,751)
Weighted average common shares and equivalents:
Basic (in shares)	35,151		34,018
Diluted (in shares)	35,151	[1]	34,018	[1]

[1] The assumed exercise of stock-based compensation awards for the three months ended March 31, 2014 and 2013 was not considered because the impact would be anti-dilutive.