Segment Information (Total Assets) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010
Segment Reporting Information [Line Items]
Assets	$ 661,291,000		$ 1,051,695,000
Total asset investments in equity method	2,300,000		(2,200,000)
Residential Real Estate [Member]
Segment Reporting Information [Line Items]
Assets	272,210,000	[1]	639,460,000	[1]
Commercial Real Estate [Member]
Segment Reporting Information [Line Items]
Assets	67,650,000		72,581,000
Rural Land Sales [Member]
Segment Reporting Information [Line Items]
Assets	10,048,000		7,964,000
Forestry [Member]
Segment Reporting Information [Line Items]
Assets	58,638,000		61,756,000
Other [Member]
Segment Reporting Information [Line Items]
Assets	$ 252,745,000		$ 269,934,000

[1] Includes $2.3 million and $(2.2) million of investment in equity method investees at December 31, 2011 and 2010, respectively.