Discontinued Operations (Details) (USD $)	3 Months Ended	9 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended
	Mar. 31, 2011	Sep. 30, 2010	Dec. 31, 2010	Dec. 31, 2009	Sep. 30, 2010 Disposal Group [Member]	Dec. 31, 2011 Disposal Group [Member]	Dec. 31, 2010 Disposal Group [Member]	Dec. 31, 2009 Disposal Group [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Sale of Real Estate	$ 700,000		$ 1,400,000
Impairment charges		111,000	846,000	5,200,000	100,000			5,200,000
Disposal Group, Including Discontinued Operation, Revenue						0	388,000	1,090,000
Disposal Group, Including Discontinued Operation, Operating Expense						0	486,000	6,304,000
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest						$ 0	$ (98,000)	$ (5,214,000)