Interest Rate Derivative Agreements Footnote Tagging (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 derivatives	Sep. 30, 2012
Derivative [Line Items]
Derivative Asset, Notional Amount	$ 93,300,000		$ 93,300,000
Number of Derivatives			4
Derivative, Loss on Derivative	440,000	275,000	304,000	1,100,000
Derivative, Maturity Date at a point in time			Sep. 01, 2017
Derivative, Fixed Interest Rate	3.00%		3.00%
Deriviative at purchase price	800,000		800,000
Deutsche Bank [Member]
Derivative [Line Items]
Derivative Asset, Notional Amount	93,305,000		93,305,000
Derivative, Maturity Date at a point in time			Sep. 01, 2017
Derivative, Fixed Interest Rate	1.50%		1.50%
Deriviative at purchase price	$ 793,000		$ 793,000