Derivative Financial Instruments (Details 2) (Cash Flow Hedges, USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended				3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Not designated as hedge	Dec. 31, 2012 Not designated as hedge	Jun. 30, 2013 Interest rate contract	Jun. 30, 2012 Interest rate contract	Jun. 30, 2013 Interest rate contract	Jun. 30, 2012 Interest rate contract
Derivatives Designated as Cash Flow Hedges
Derivatives					$ 0	$ 0
Loss Recognized in OCI (Effective Portion)	(20)	(383)	(25)	(650)			(20)	(383)	(25)	(650)
Loss Reclassified from AOCI into Operations (Effective Portion)	(105)		(170)				(105)		(170)
Loss Recognized in Operations on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)			$ (1)						$ (1)