Investment in Real Estate Real Estate by Property Type and Segment (Details) (USD $)	3 Months Ended			6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013	Jun. 30, 2014		Jun. 30, 2013	Dec. 31, 2013
Real Estate Properties [Line Items]
Operating property	$ 196,843,000			$ 196,843,000			$ 206,910,000
Development property	178,797,000			178,797,000			229,354,000
Investment in unconsolidated affiliates	2,368,000	[1]		2,368,000	[1]		2,241,000	[1]
Total real estate investments	378,008,000			378,008,000			438,505,000
Less: Accumulated depreciation	55,085,000			55,085,000			53,496,000
Investment in real estate, net	322,923,000			322,923,000			385,009,000
Capitalized indirect costs incurred	200,000		300,000	500,000		300,000
Residential real estate
Real Estate Properties [Line Items]
Operating property	1,544,000			1,544,000			2,071,000
Development property	102,307,000			102,307,000			130,616,000
Resorts, leisure and leasing operations
Real Estate Properties [Line Items]
Operating property	177,064,000			177,064,000			146,624,000
Development property	11,929,000			11,929,000			28,737,000
Forestry
Real Estate Properties [Line Items]
Operating property	18,190,000			18,190,000			58,170,000
Development property	3,319,000			3,319,000			8,976,000
Other
Real Estate Properties [Line Items]
Operating property	45,000			45,000			45,000
Commercial real estate
Real Estate Properties [Line Items]
Development property	58,812,000			58,812,000			58,659,000
Corporate
Real Estate Properties [Line Items]
Development property	$ 2,430,000			$ 2,430,000			$ 2,366,000

[1] Recorded in the Company’s resorts, leisure and leasing operation's segment.