Supplemental Guarantor Information (Supplemental Condensed Consolidated Statement Of Cash Flows) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used in) operating activities	$ (148,964)	$ (216,997)
Net cash provided by/(used in) investing activities	(11,555)	(39,657)
Financing activities
Borrowings under revolving credit facilities	1,184,800	520,000
Payments on revolving credit facilities	(1,108,500)	(284,000)
Extinguishments of debt assumed in business combination		(94,231)
Proceeds from issuance of senior notes due 2027	500,000
Extinguishment of senior notes due 2022	(391,942)
Debt issuance costs	(6,075)	(3,521)
Proceeds from issuance of insurance premium notes and other	12,629	11,838
Principal payments on insurance notes payable and other	(19,275)	(2,173)
Net payments on mortgage repurchase facilities	(26,757)	9,008
Net proceeds from issuances of common stock	25,817	31,230
Repurchases of common stock upon vesting of stock based compensation	(3,588)	(5,483)
Repurchases of common stock under our stock repurchase program	(1,439)
Net cash provided by (used in) financing activities	165,670	182,668
Net increase (decrease)	5,151	(73,986)
Cash and cash equivalents and Restricted cash, Beginning of period	36,441	93,713
Cash and cash equivalents and Restricted cash, End of period	41,592	19,727
Cash and cash equivalents	38,508	15,927	$ 32,902
Restricted Cash	3,084	3,800
Elimination Entries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used in) operating activities		(16,580)
Net cash provided by/(used in) investing activities	142,391	280,048
Financing activities
Payments from (and advances to) parent/subsidiary	(142,391)	(280,048)
Net cash provided by (used in) financing activities	(142,391)	(280,048)
Net increase (decrease)		(16,580)
Cash and cash equivalents and Restricted cash, End of period		(16,580)
Cash and cash equivalents		(16,580)
Century [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used in) operating activities	(52,863)	(71,743)
Net cash provided by/(used in) investing activities	(146,499)	(153,607)
Financing activities
Borrowings under revolving credit facilities	1,184,800	520,000
Payments on revolving credit facilities	(1,108,500)	(284,000)
Extinguishments of debt assumed in business combination		(94,231)
Proceeds from issuance of senior notes due 2027	500,000
Extinguishment of senior notes due 2022	(391,942)
Debt issuance costs	(6,075)	(3,521)
Principal payments on insurance notes payable and other		(9)
Net proceeds from issuances of common stock	25,817	31,230
Repurchases of common stock upon vesting of stock based compensation	(3,588)	(5,483)
Repurchases of common stock under our stock repurchase program	(1,439)
Payments from (and advances to) parent/subsidiary		5,130
Net cash provided by (used in) financing activities	199,073	169,116
Net increase (decrease)	(289)	(56,234)
Cash and cash equivalents and Restricted cash, Beginning of period	2,183	56,234
Cash and cash equivalents and Restricted cash, End of period	1,894
Cash and cash equivalents	1,894		2,183
Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used in) operating activities	(112,548)	(123,418)
Net cash provided by/(used in) investing activities	(7,610)	(165,939)
Financing activities
Proceeds from issuance of insurance premium notes and other	12,629	11,838
Principal payments on insurance notes payable and other	(19,275)	(2,164)
Payments from (and advances to) parent/subsidiary	125,834	263,120
Net cash provided by (used in) financing activities	119,188	272,794
Net increase (decrease)	(970)	(16,563)
Cash and cash equivalents and Restricted cash, Beginning of period	4,006	28,044
Cash and cash equivalents and Restricted cash, End of period	3,036	11,481
Cash and cash equivalents	2,125	8,922	2,101
Restricted Cash	911	2,559
Non Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used in) operating activities	16,447	(5,256)
Net cash provided by/(used in) investing activities	163	(159)
Financing activities
Net payments on mortgage repurchase facilities	(26,757)	9,008
Payments from (and advances to) parent/subsidiary	16,557	11,798
Net cash provided by (used in) financing activities	(10,200)	20,806
Net increase (decrease)	6,410	15,391
Cash and cash equivalents and Restricted cash, Beginning of period	30,252	9,435
Cash and cash equivalents and Restricted cash, End of period	36,662	24,826
Cash and cash equivalents	34,489	23,585	$ 28,618
Restricted Cash	$ 2,173	$ 1,241