Accumulated OCI (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated OCI, net of tax Beginning Balance	$ (2,048)	$ (407)
Other comprehensive loss before reclassifications, net of tax	(1,736)	267
Amounts reclassified from accumulated OCI, net of tax	59	76
Net increase (decrease) in other comprehensive income (loss), net of tax	(1,677)	343
Accumulated OCI, net of tax Ending Balance	(3,725)	(64)
Reclassification adjustments out of AOCI [Abstract]
Reclassification to interest expense	(4,490)	(4,383)
Amounts reclassified from accumulated other comprehensive income to: [Member]
Reclassification adjustments out of AOCI [Abstract]
Reclassification to interest expense	98	126
Tax effect of reclassification	(39)	(50)
Reclassification Adjustment on Derivatives Included in Net Income	59	76
Net Change in Fair Value of Interest Rate Swaps [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated OCI, net of tax Beginning Balance	(342)	(513)
Other comprehensive loss before reclassifications, net of tax	(111)	(30)
Amounts reclassified from accumulated OCI, net of tax	59	76
Net increase (decrease) in other comprehensive income (loss), net of tax	(52)	46
Accumulated OCI, net of tax Ending Balance	(394)	(467)
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated OCI, net of tax Beginning Balance	(1,706)	106
Other comprehensive loss before reclassifications, net of tax	(1,625)	297
Amounts reclassified from accumulated OCI, net of tax	0	0
Net increase (decrease) in other comprehensive income (loss), net of tax	(1,625)	297
Accumulated OCI, net of tax Ending Balance	$ (3,331)	$ 403