Segment Information - Information by Business Segment (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) Segment	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Segment Reporting [Abstract]
Number of reportable operating segments | Segment			5
Segment Reporting Information [Line Items]
Operating Revenues	$ 27,830	$ 23,947	$ 82,768	$ 686,197
Income (loss) before equity in loss from unconsolidated affiliates and income taxes:	4,002	(531)	2,805	532,682
Total assets	1,012,456		1,012,456		$ 1,303,135
Operating Segments | Residential real estate
Segment Reporting Information [Line Items]
Operating Revenues	4,880	3,660	14,355	57,128
Income (loss) before equity in loss from unconsolidated affiliates and income taxes:	(1,603)	(233)	(1,553)	25,901
Total assets	112,081		112,081		135,317
Operating Segments | Commercial real estate
Segment Reporting Information [Line Items]
Operating Revenues	0	0	4,660	3,265
Income (loss) before equity in loss from unconsolidated affiliates and income taxes:	(654)	(552)	(1,265)	413
Total assets	58,802		58,802		62,931
Operating Segments | Resorts and leisure
Segment Reporting Information [Line Items]
Operating Revenues	18,537	16,913	45,657	40,392
Income (loss) before equity in loss from unconsolidated affiliates and income taxes:	2,607	2,051	3,142	2,554
Total assets	76,403		76,403		79,021
Operating Segments | Leasing operations
Segment Reporting Information [Line Items]
Operating Revenues	2,528	2,054	6,741	4,931
Income (loss) before equity in loss from unconsolidated affiliates and income taxes:	517	147	1,001	1,034
Total assets	78,802		78,802		74,800
Operating Segments | Forestry
Segment Reporting Information [Line Items]
Operating Revenues	1,885	1,061	11,355	580,236
Income (loss) before equity in loss from unconsolidated affiliates and income taxes:	1,759	1,034	10,167	516,144
Total assets	21,860		21,860		20,521
Other
Segment Reporting Information [Line Items]
Operating Revenues	0	259	0	245
Income (loss) before equity in loss from unconsolidated affiliates and income taxes:	1,376	$ (2,978)	(8,687)	$ (13,364)
Total assets	$ 664,508		$ 664,508		$ 930,545