Segment Information (Business Segment Reporting Information) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Segment Reporting Information [Line Items]
Consolidated operating revenues	$ 26,745	$ 27,105	$ 125,465	$ 62,440
Consolidated income (loss) from continuing operations before equity in loss of unconsolidated affiliates and income taxes	(3,899)	(21,649)	(2,506)	(54,004)
Total Assets	1,048,663		1,048,663		1,051,695
Residential Real Estate [Member]
Segment Reporting Information [Line Items]
Consolidated operating revenues	16,592	12,316	40,802	30,813
Consolidated income (loss) from continuing operations before equity in loss of unconsolidated affiliates and income taxes	(3,663)	(16,575)	(18,817)	(34,975)
Total Assets	633,227		633,227		639,460
Commercial Real Estate [Member]
Segment Reporting Information [Line Items]
Consolidated operating revenues	1,450	3,690	2,345	4,137
Consolidated income (loss) from continuing operations before equity in loss of unconsolidated affiliates and income taxes	(523)	1,539	(5,295)	(215)
Total Assets	82,006		82,006		72,581
Rural Land Sales [Member]
Segment Reporting Information [Line Items]
Consolidated operating revenues	517	4,282	3,342	6,454
Consolidated income (loss) from continuing operations before equity in loss of unconsolidated affiliates and income taxes	307	3,548	2,204	3,949
Total Assets	7,881		7,881		7,964
Forestry [Member]
Segment Reporting Information [Line Items]
Consolidated operating revenues	8,186	6,817	78,976	21,036
Consolidated income (loss) from continuing operations before equity in loss of unconsolidated affiliates and income taxes	2,593	767	57,090	4,399
Total Assets	58,185		58,185		61,756
Other [Member]
Segment Reporting Information [Line Items]
Consolidated income (loss) from continuing operations before equity in loss of unconsolidated affiliates and income taxes	(2,613)	(10,928)	(37,688)	(27,162)
Total Assets	$ 267,364		$ 267,364		$ 269,934