Investment in Unconsolidated Ventures - Summarized Balance Sheet Information (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]
Venture Assets	$ 205,312,000	$ 172,637,000
Venture Borrowings	91,108,000	71,476,000
Venture Equity	79,951,000	68,515,000
Investment in venture	50,459,000	41,147,000
Unrecognized basis difference on equity method investment	1,648,000
242, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Venture Assets	22,804,000	23,751,000
Venture Borrowings	495,000	921,000
Venture Equity	19,371,000	19,838,000
Investment in venture	8,861,000	9,084,000
CJUF III, RH Holdings [Member]
Schedule of Equity Method Investments [Line Items]
Venture Assets	38,072,000	36,320,000
Venture Borrowings	21,063,000	18,492,000
Venture Equity	15,202,000	15,415,000
Investment in venture	3,021,000	3,235,000
CL Ashton Woods [Member]
Schedule of Equity Method Investments [Line Items]
Venture Assets	10,413,000	10,473,000
Venture Borrowings	0	0
Venture Equity	9,924,000	9,704,000
Investment in venture	3,862,000	3,544,000
CL Realty [Member]
Schedule of Equity Method Investments [Line Items]
Venture Assets	7,988,000	8,298,000
Venture Borrowings	0	0
Venture Equity	7,898,000	8,070,000
Investment in venture	3,949,000	4,035,000
Unrecognized basis difference on equity method investment	1,836,000
FMF Peakview [Member]
Schedule of Equity Method Investments [Line Items]
Venture Assets	33,678,000	30,673,000
Venture Borrowings	15,148,000	12,533,000
Venture Equity	16,547,000	16,620,000
Investment in venture	3,391,000	3,406,000
HM Stonewall Estates [Member]
Schedule of Equity Method Investments [Line Items]
Venture Assets	3,322,000	3,781,000
Venture Borrowings	0	63,000
Venture Equity	3,320,000	3,718,000
Investment in venture	1,896,000	2,128,000
CREA FMF [Member]
Schedule of Equity Method Investments [Line Items]
Venture Assets	16,554,000	0
Venture Borrowings	9,300,000	0
Venture Equity	6,125,000	0
Investment in venture	5,655,000	0
LM Land Holdings [Member]
Schedule of Equity Method Investments [Line Items]
Venture Assets	38,171,000	33,298,000
Venture Borrowings	10,925,000	9,768,000
Venture Equity	16,008,000	13,347,000
Investment in venture	8,960,000	8,283,000
PSW Communities [Member]
Schedule of Equity Method Investments [Line Items]
Venture Assets	8,901,000	0
Venture Borrowings	4,457,000	0
Venture Equity	4,295,000	0
Investment in venture	3,811,000	0
Temco [Member]
Schedule of Equity Method Investments [Line Items]
Venture Assets	13,134,000	13,320,000
Venture Borrowings	0	0
Venture Equity	12,942,000	13,160,000
Investment in venture	6,471,000	6,580,000
Other ventures [Member]
Schedule of Equity Method Investments [Line Items]
Venture Assets	12,275,000	12,723,000
Venture Borrowings	29,720,000	29,699,000
Venture Equity	(31,681,000)	(31,357,000)
Investment in venture	$ 582,000	$ 852,000