Segment Information - Information by Business Segment (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) Segment golf_course	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of reportable operating segments | Segment			5
Operating revenue	$ 30,383	$ 29,551	$ 43,580	$ 49,805
Income (loss) before income taxes	16,523	2,558	22,990	14,354
Total assets	1,020,346		$ 1,020,346		$ 1,027,945
Resorts and leisure
Segment Reporting Information [Line Items]
Number of golf courses | golf_course			4
Operating segments | Residential real estate
Segment Reporting Information [Line Items]
Operating revenue	4,706	5,796	$ 5,980	12,784
Income (loss) before income taxes	1,893	1,081	1,224	4,439
Total assets	118,917		118,917		112,220
Operating segments | Commercial real estate
Segment Reporting Information [Line Items]
Operating revenue	2,178	0	2,178	0
Income (loss) before income taxes	(74)	(548)	(649)	(1,148)
Total assets	58,343		58,343		60,150
Operating segments | Resorts and leisure
Segment Reporting Information [Line Items]
Operating revenue	19,328	19,794	27,436	28,544
Income (loss) before income taxes	3,380	2,795	1,604	994
Total assets	81,363		81,363		73,436
Operating segments | Leasing operations
Segment Reporting Information [Line Items]
Operating revenue	2,653	2,321	5,037	4,682
Income (loss) before income taxes	309	(336)	511	(379)
Total assets	99,816		99,816		80,863
Operating segments | Forestry
Segment Reporting Information [Line Items]
Operating revenue	1,324	1,603	2,674	3,724
Income (loss) before income taxes	1,130	1,241	2,371	3,094
Total assets	20,938		20,938		20,664
Other
Segment Reporting Information [Line Items]
Operating revenue	194	37	275	71
Income (loss) before income taxes	9,885	$ (1,675)	17,929	$ 7,354
Total assets	$ 640,969		$ 640,969		$ 680,612