Supplemental Guarantor Information (Supplemental Condensed Consolidated Statement Of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used in) operating activities	$ (44,571)	$ (10,116)
Net cash used in investing activities	(2,075)	(1,027)
Financing activities
Borrowings under revolving credit facilities	60,000	45,000
Payments on revolving credit facilities	(60,000)	(175,000)
Proceeds from issuance of insurance premium notes and other		127,500
Principal payments on notes payable		(1,582)
Debt issuance costs		(2,533)
Repurchases of common stock upon vesting of restricted stock awards	(4,790)	(2,904)
Net proceeds from mortgage repurchase facilities	(11,307)
Net proceeds from issuances of common stock	5,021	15,023
Net cash provided by (used in) financing activities	(11,076)	5,504
Net decrease	(57,722)	(5,639)
Cash and cash equivalents and Restricted cash, Beginning of period	93,713	30,954
Cash and cash equivalents and Restricted cash, End of period	35,991	25,315
Cash and cash equivalents			$ 29,986	$ 88,832	$ 23,465
Restricted Cash			6,005		1,850
Cash and cash equivalents and Restricted cash	93,713	30,954	35,991	93,713	25,315
Elimination Entries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash used in investing activities	32,997	6,008
Financing activities
Payments from (and advances to) parent/subsidiary	(32,997)	(6,008)
Net cash provided by (used in) financing activities	(32,997)	(6,008)
CCS [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used in) operating activities	(13,651)	(2,141)
Net cash used in investing activities	(33,265)	(6,610)
Financing activities
Borrowings under revolving credit facilities	60,000	45,000
Payments on revolving credit facilities	(60,000)	(175,000)
Proceeds from issuance of insurance premium notes and other		127,500
Debt issuance costs		(2,533)
Repurchases of common stock upon vesting of restricted stock awards	(4,790)	(2,904)
Payments from (and advances to) parent/subsidiary	(584)
Net proceeds from issuances of common stock	5,021	15,023
Net cash provided by (used in) financing activities	(353)	7,086
Net decrease	(47,269)	(1,665)
Cash and cash equivalents and Restricted cash, Beginning of period	56,234	14,637
Cash and cash equivalents and Restricted cash, End of period	8,965	12,972
Cash and cash equivalents			8,965	56,234	12,972
Cash and cash equivalents and Restricted cash	56,234	14,637	8,965	56,234	12,972
Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used in) operating activities	(43,713)	(7,242)
Net cash used in investing activities	(1,782)	(298)
Financing activities
Principal payments on notes payable		(1,582)
Payments from (and advances to) parent/subsidiary	29,888	5,412
Net cash provided by (used in) financing activities	29,888	3,830
Net decrease	(15,607)	(3,710)
Cash and cash equivalents and Restricted cash, Beginning of period	28,044	10,150
Cash and cash equivalents and Restricted cash, End of period	12,437	6,440
Cash and cash equivalents			8,039	23,399	4,590
Restricted Cash			4,398		1,850
Cash and cash equivalents and Restricted cash	28,044	10,150	12,437	28,044	6,440
Non Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used in) operating activities	12,793	(733)
Net cash used in investing activities	(25)	(127)
Financing activities
Payments from (and advances to) parent/subsidiary	3,693	596
Net proceeds from mortgage repurchase facilities	(11,307)
Net cash provided by (used in) financing activities	(7,614)	596
Net decrease	5,154	(264)
Cash and cash equivalents and Restricted cash, Beginning of period	9,435	6,167
Cash and cash equivalents and Restricted cash, End of period	14,589	5,903
Cash and cash equivalents			12,982	9,199	5,903
Restricted Cash			1,607
Cash and cash equivalents and Restricted cash	$ 9,435	$ 6,167	$ 14,589	$ 9,435	$ 5,903