Segment Information - Information by Business Segment (Details) $ in Thousands		1 Months Ended	3 Months Ended		48 Months Ended
	Apr. 30, 2014 USD ($)	Apr. 30, 2014	Mar. 31, 2018 USD ($) Segment golf_course	Mar. 31, 2017 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment			4
Number of operating segments | Segment			4
Percentage of resort fees included in revenue			50.00%		50.00%
Expected impact fee receivable period for recognition		5 years
Impact fees received			$ 200	$ 100	$ 1,800
Operating revenue			19,865	13,512
Income (loss) before income taxes			376	6,467
Total assets			$ 905,584		905,584	$ 920,993
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			$ 7,034	1,275
Income (loss) before income taxes			1,459	(668)
Total assets			120,049		120,049	117,732
Operating segments | Resorts and leisure
Segment Reporting Information [Line Items]
Operating revenue			7,450	8,108
Income (loss) before income taxes			(534)	(1,776)
Total assets			76,433		76,433	83,151
Operating segments | Commercial leasing and sales real estate
Segment Reporting Information [Line Items]
Operating revenue			3,150	2,384
Income (loss) before income taxes			(90)	(373)
Total assets			165,725		165,725	163,271
Operating segments | Forestry
Segment Reporting Information [Line Items]
Operating revenue			1,980	1,665
Income (loss) before income taxes			1,531	1,242
Total assets			19,998		19,998	20,212
Other
Segment Reporting Information [Line Items]
Operating revenue			251	80
Income (loss) before income taxes			(1,990)	$ 8,042
Total assets			$ 523,379		$ 523,379	$ 536,627
Minimum
Segment Reporting Information [Line Items]
Impact fees receivable	$ 20,000
Maximum
Segment Reporting Information [Line Items]
Impact fees receivable	$ 26,000