Supplemental Guarantor Information (Supplemental Condensed Consolidated Statement Of Cash Flows) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used in) operating activities	$ (33,329)	$ (72,160)
Net cash used in investing activities	(3,935)	(1,005)
Financing activities
Borrowings under revolving credit facilities	90,000	75,000
Payments on revolving credit facilities	(65,000)	(55,000)
Principal payments on notes payable	(3,042)	(4,570)
Debt issuance costs		(1,784)
Proceeds from issuance of senior notes		58,956
Proceeds from issuances of insurance premium notes		448
Repurchases of common stock under our stock repurchase program	(2,393)
Repurchases of common stock upon vesting of restricted stock awards	(904)	(717)
Net cash provided by financing activities	18,661	72,333
Net increase (decrease) in cash and cash equivalents	(18,603)	(832)
Cash and cash equivalents, Beginning of period	29,287	33,462
Cash and cash equivalents, End of period	10,684	32,630
CCS [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used in) operating activities	(10,020)	(5,139)
Net cash used in investing activities	(23,108)	(83,969)
Financing activities
Borrowings under revolving credit facilities	90,000	75,000
Payments on revolving credit facilities	(65,000)	(55,000)
Principal payments on notes payable	(24)
Debt issuance costs		(1,784)
Proceeds from issuance of senior notes		58,956
Repurchases of common stock under our stock repurchase program	(2,393)
Repurchases of common stock upon vesting of restricted stock awards	(904)	(717)
Net cash provided by financing activities	21,679	76,455
Net increase (decrease) in cash and cash equivalents	(11,449)	(12,653)
Cash and cash equivalents, Beginning of period	22,002	22,710
Cash and cash equivalents, End of period	10,553	10,057
Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used in) operating activities	(23,309)	(67,021)
Net cash used in investing activities	(3,722)	(796)
Financing activities
Principal payments on notes payable	(3,018)	(4,570)
Proceeds from issuances of insurance premium notes		448
Payments from (and advances to) parent/subsidiary	22,895	83,760
Net cash provided by financing activities	19,877	79,638
Net increase (decrease) in cash and cash equivalents	(7,154)	11,821
Cash and cash equivalents, Beginning of period	7,285	10,752
Cash and cash equivalents, End of period	131	22,573
Elimination Entries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash used in investing activities	22,895	83,760
Financing activities
Payments from (and advances to) parent/subsidiary	(22,895)	(83,760)
Net cash provided by financing activities	$ (22,895)	$ (83,760)