Accumulated OCI (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 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	267	(182)
Amounts reclassified from accumulated OCI, net of tax	76	380
Net increase (decrease) in other comprehensive income (loss), net of tax	343	198
Accumulated OCI, net of tax Ending Balance	(64)	(731)
Reclassification adjustments out of AOCI [Abstract]
Reclassification to interest expense	(4,383)	(3,321)
Amounts reclassified from accumulated other comprehensive income to: [Member]
Reclassification adjustments out of AOCI [Abstract]
Reclassification to interest expense	126	629
Tax effect of reclassification	(50)	(249)
Reclassification Adjustment on Derivatives Included in Net Income	76	380
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	(30)	(35)
Amounts reclassified from accumulated OCI, net of tax	76	380
Net increase (decrease) in other comprehensive income (loss), net of tax	46	345
Accumulated OCI, net of tax Ending Balance	(467)	(1,445)
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	297	(147)
Amounts reclassified from accumulated OCI, net of tax	0	0
Net increase (decrease) in other comprehensive income (loss), net of tax	297	(147)
Accumulated OCI, net of tax Ending Balance	$ 403	$ 714