Derivative Financial Instruments - Interest Rate Swap Swap impact on the Consolidated Financial Statements (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized (loss) gain on interest rate swap	$ (212)	$ 532	$ (257)	$ 564
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	(286)	(282)	(568)	(559)
Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized (loss) gain on interest rate swap	(212)	532	(257)	564
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	286	282	568	559
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net	$ 0	$ 0	$ 0	$ 0