Segment Information - Information by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Segments
Revenues	$ 16,023	$ 19,865
Consolidated income (loss) before income taxes	2,641	376
Total assets	875,840		$ 870,962
Operating Segments | Residential real estate
Segments
Revenues	3,362	7,034
Consolidated income (loss) before income taxes	255	1,459
Total assets	129,166		125,642
Operating Segments | Hospitality
Segments
Revenues	7,467	7,450
Consolidated income (loss) before income taxes	(807)	(534)
Total assets	73,616		70,746
Operating Segments | Commercial leasing and sales
Segments
Revenues	4,211	3,150
Consolidated income (loss) before income taxes	2,490	(90)
Total assets	192,273		182,658
Operating Segments | Forestry
Segments
Revenues	865	1,980
Consolidated income (loss) before income taxes	580	1,531
Total assets	20,464		20,189
Other
Segments
Revenues	118	251
Consolidated income (loss) before income taxes	123	$ (1,990)
Total assets	$ 460,321		$ 471,727