Changes in Operations (Details 5) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from net insurance proceeds	$ 0	$ 0	$ 1,043,000	$ 0
Segment, Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from net insurance proceeds		2,800,000
Income from net insurance proceeds, net of tax		$ 2,800,000