Interest Rate Derivative Agreements Footnote Tagging (Details) (USD $)	12 Months Ended
	Dec. 31, 2012 derivatives	Dec. 31, 2011	Sep. 30, 2012
Derivative [Line Items]
Number of Derivatives	3
Notional Amount of Interest Rate Derivatives			$ 31,900,000
Derivative, Fixed Interest Rate			3.00%
effective rate - maximum			4.90%
Derivative, Loss on Derivative	900,000	2,100,000
Derivative Asset, Fair Value, Gross Asset	$ 379,000	$ 1,300,000