Fair Value Disclosures; Derivative Instruments (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011
Derivatives not designated as hedging instruments under Statement 133	Interest Rate Contracts		Interest Rate Contracts
Location of Loss Recognized in Income on Derivative	Interest Expense		Interest Expense
Amount of Loss Recognized in Income on Derivative	$ (67,000)	[1]	$ (181,000)	[2]

[1] Includes interest of $80,000 associated with variances between fixed and variable rates.

[2] Designated as a cash flow hedge.