Supplemental Guarantor Information (Supplemental Condensed Consolidated Statement Of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used in) operating activities	$ (12,376)	$ (59,400)
Net cash provided by/(used in) investing activities	(2,627)	(3,284)
Financing activities
Borrowings under revolving credit facilities	678,000	288,800
Payments on revolving credit facilities	(224,800)	(204,300)
Principal payments on notes payable	(2,043)	(7,716)
Proceeds from insurance notes payable	4,137	9,301
Net proceeds from mortgage repurchase facilities	(40,302)	(13,689)
Repurchases of common stock upon vesting of stock-based compensation	(4,977)	(3,166)
Repurchases of common stock under our stock repurchase program		(1,439)
Net cash provided by financing activities	410,015	67,791
Net increase	395,012	5,107
Cash and cash equivalents and Restricted cash, Beginning of period	58,522	36,441
Cash and cash equivalents and Restricted cash, End of period	453,534	41,548
Cash and cash equivalents	450,973	38,115	$ 55,436
Restricted Cash	2,561	3,433
Elimination Entries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used in) investing activities	47,268	43,384
Financing activities
Payments from (and advances to) parent/subsidiary	(47,268)	(43,384)
Net cash provided by financing activities	(47,268)	(43,384)
Parent [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used in) operating activities	(652)	(36,731)
Net cash provided by/(used in) investing activities	(48,079)	(44,704)
Financing activities
Borrowings under revolving credit facilities	678,000	288,800
Payments on revolving credit facilities	(224,800)	(204,300)
Repurchases of common stock upon vesting of stock-based compensation	(4,977)	(3,166)
Repurchases of common stock under our stock repurchase program		(1,439)
Net cash provided by financing activities	448,223	79,895
Net increase	399,492	(1,540)
Cash and cash equivalents and Restricted cash, Beginning of period	1,577	2,183
Cash and cash equivalents and Restricted cash, End of period	401,069	643
Cash and cash equivalents	401,069	643	1,577
Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used in) operating activities	(33,043)	(36,216)
Net cash provided by/(used in) investing activities	(1,670)	(2,031)
Financing activities
Principal payments on notes payable	(2,043)	(7,716)
Proceeds from insurance notes payable	4,137	9,301
Payments from (and advances to) parent/subsidiary	39,379	36,890
Net cash provided by financing activities	41,473	38,475
Net increase	6,760	228
Cash and cash equivalents and Restricted cash, Beginning of period	341	4,006
Cash and cash equivalents and Restricted cash, End of period	7,101	4,234
Cash and cash equivalents	6,404	2,596
Restricted Cash	697	1,638
Non Guarantor Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by/(used in) operating activities	21,319	13,547
Net cash provided by/(used in) investing activities	(146)	67
Financing activities
Net proceeds from mortgage repurchase facilities	(40,302)	(13,689)
Payments from (and advances to) parent/subsidiary	7,889	6,494
Net cash provided by financing activities	(32,413)	(7,195)
Net increase	(11,240)	6,419
Cash and cash equivalents and Restricted cash, Beginning of period	56,604	30,252
Cash and cash equivalents and Restricted cash, End of period	45,364	36,671
Cash and cash equivalents	43,500	34,876	$ 53,859
Restricted Cash	$ 1,864	$ 1,795