Segment Information (Total Assets And Inventory By Reportable Segment) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Segment Reporting Information
Homes under construction	$ 3,594,406	$ 3,086,740
Land under development	3,913,349	4,137,318
Raw land	467,456	497,740
Total Inventory	7,975,211	7,721,798
Total Assets	11,445,741	12,205,498
Operating Segments | Northeast
Segment Reporting Information
Homes under construction	384,606	342,737
Land under development	236,846	203,561
Raw land	41,641	68,865
Total Inventory	663,093	615,163
Total Assets	766,691	712,205
Operating Segments | Southeast
Segment Reporting Information
Homes under construction	532,643	465,950
Land under development	623,668	645,408
Raw land	74,107	69,937
Total Inventory	1,230,418	1,181,295
Total Assets	1,346,886	1,296,382
Operating Segments | Florida
Segment Reporting Information
Homes under construction	733,612	638,394
Land under development	890,080	921,962
Raw land	83,806	116,709
Total Inventory	1,707,498	1,677,065
Total Assets	2,036,755	1,967,788
Operating Segments | Midwest
Segment Reporting Information
Homes under construction	421,833	364,839
Land under development	389,098	424,169
Raw land	16,556	18,173
Total Inventory	827,487	807,181
Total Assets	949,539	911,984
Operating Segments | Texas
Segment Reporting Information
Homes under construction	413,218	354,256
Land under development	417,342	458,893
Raw land	114,603	66,024
Total Inventory	945,163	879,173
Total Assets	1,040,459	955,436
Operating Segments | West
Segment Reporting Information
Homes under construction	1,053,317	874,673
Land under development	1,123,844	1,212,730
Raw land	122,283	142,380
Total Inventory	2,299,444	2,229,783
Total Assets	2,582,835	2,519,724
Operating Segments | Other homebuilding
Segment Reporting Information
Homes under construction	55,177	45,891
Land under development	232,471	270,595
Raw land	14,460	15,652
Total Inventory	302,108	332,138
Total Assets	2,073,987	3,149,871
Operating Segments | Home sales
Segment Reporting Information
Homes under construction	3,594,406	3,086,740
Land under development	3,913,349	4,137,318
Raw land	467,456	497,740
Total Inventory	7,975,211	7,721,798
Total Assets	10,797,152	11,513,390
Operating Segments | Financial Services
Segment Reporting Information
Homes under construction	0	0
Land under development	0	0
Raw land	0	0
Total Inventory	0	0
Total Assets	$ 648,589	$ 692,108