Accumulated OCI (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated OCI, net of tax Beginning Balance			$ (407)	$ (929)
Other comprehensive loss before reclassifications, net of tax			(947)	(180)
Amounts reclassified from accumulated OCI, net of tax			233	987
Net increase (decrease) in other comprehensive income (loss), net of tax			(714)	807
Accumulated OCI, net of tax Ending Balance	(1,121)	(122)	(1,121)	(122)
Reclassification adjustments out of AOCI [Abstract]
Reclassification to interest expense	(4,574)	(5,006)	(13,472)	(11,486)
Amounts reclassified from accumulated other comprehensive income to: [Member]
Reclassification adjustments out of AOCI [Abstract]
Reclassification to interest expense			386	1,632
Tax effect of reclassification			(153)	(645)
Reclassification Adjustment on Derivatives Included in Net Income			233	987
Net Change in Fair Value of Interest Rate Swaps [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated OCI, net of tax Beginning Balance			(513)	(1,790)
Other comprehensive loss before reclassifications, net of tax			(68)	377
Amounts reclassified from accumulated OCI, net of tax			233	987
Net increase (decrease) in other comprehensive income (loss), net of tax			165	1,364
Accumulated OCI, net of tax Ending Balance	(348)	(426)	(348)	(426)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated OCI, net of tax Beginning Balance			106	861
Other comprehensive loss before reclassifications, net of tax			(879)	(557)
Amounts reclassified from accumulated OCI, net of tax			0	0
Net increase (decrease) in other comprehensive income (loss), net of tax			(879)	(557)
Accumulated OCI, net of tax Ending Balance	$ (773)	$ 304	$ (773)	$ 304