Segment Information - Information by Business Segment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012		Dec. 31, 2012
Segment Reporting Information [Line Items]
Operating revenues	$ 36,827		$ 55,907		$ 97,388		$ 116,780
Income (loss) before equity in loss from unconsolidated affiliates and income taxes:	4,360		15,710		4,607		15,650
Assets	667,072				667,072				645,521
Real estate sales	12,823		32,206		27,859		51,338
Residential Real Estate
Segment Reporting Information [Line Items]
Operating revenues	10,704		9,705		23,996		17,695
Income (loss) before equity in loss from unconsolidated affiliates and income taxes:	2,432		(630)		2,596		(4,955)
Assets	144,157				144,157				141,526
Commercial Real Estate
Segment Reporting Information [Line Items]
Operating revenues	0		3,612		341		10,265
Income (loss) before equity in loss from unconsolidated affiliates and income taxes:	(394)		(518)		(1,794)		614
Assets	62,779				62,779				64,961
Rural land
Segment Reporting Information [Line Items]
Operating revenues	18		18,889		31		23,377
Income (loss) before equity in loss from unconsolidated affiliates and income taxes:	(2)		14,663		(19)		16,848
Assets	6,156				6,156				6,219
Resorts, leisure and leasing operations
Segment Reporting Information [Line Items]
Operating revenues	18,392	[1]	14,143	[1]	45,524	[1]	36,659	[1]
Income (loss) before equity in loss from unconsolidated affiliates and income taxes:	3,074		1,255		5,697		2,139
Assets	139,534				139,534				125,596
Real estate sales	2,100				3,100
Forestry
Segment Reporting Information [Line Items]
Operating revenues	7,695		9,558		27,145		28,784
Income (loss) before equity in loss from unconsolidated affiliates and income taxes:	2,757		3,709		10,096		9,607
Assets	52,904				52,904				53,839
Other
Segment Reporting Information [Line Items]
Operating revenues	18		0		351		0
Income (loss) before equity in loss from unconsolidated affiliates and income taxes:	(3,507)		(2,769)		(11,969)		(8,603)
Assets	$ 261,542				$ 261,542				$ 253,380

[1] Includes $2.1 million and $3.1 million of real estate sales for the three and nine months ended September 30, 2013.