Investment in Real Estate - Real Estate by Property Type and Segment (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Real estate properties
Investment in real estate, net	$ 339,457	$ 332,624
Development property
Real estate properties
Investment in real estate, net	172,864	163,365
Development property \| Corporate/Other
Real estate properties
Investment in real estate, net	2,427	2,571
Development property \| Residential real estate \| Operating Segments
Real estate properties
Investment in real estate, net	99,034	100,279
Development property \| Resorts and leisure \| Operating Segments
Real estate properties
Investment in real estate, net	7,438	4,131
Development property \| Commercial leasing and sales \| Operating Segments
Real estate properties
Investment in real estate, net	61,822	53,896
Development property \| Forestry \| Operating Segments
Real estate properties
Investment in real estate, net	2,143	2,488
Operating property
Real estate properties
Investment in real estate	241,332	241,011
Less: Accumulated depreciation	74,739	71,752
Investment in real estate, net	166,593	169,259
Operating property \| Corporate/Other
Real estate properties
Investment in real estate	50	50
Operating property \| Residential real estate \| Operating Segments
Real estate properties
Investment in real estate	7,344	7,344
Operating property \| Resorts and leisure \| Operating Segments
Real estate properties
Investment in real estate	103,670	103,616
Operating property \| Commercial leasing and sales \| Operating Segments
Real estate properties
Investment in real estate	110,513	110,491
Operating property \| Forestry \| Operating Segments
Real estate properties
Investment in real estate	$ 19,755	$ 19,510

The cumulative amount of depreciation for real estate property held for investment purposes.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(3))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(d))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(d))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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