Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period			$ 126,991
Net other comprehensive income (loss) during period	$ 203	$ (441)	(116)	$ (780)
Balance at end of period	153,651		153,651
Unrealized Gain (Loss) on Available-for-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	10	(5)	(16)	(18)
Current period other comprehensive income (loss) before reclassifications	0	10	26	23
Reclassification of amounts to earnings	0		0
Net other comprehensive income (loss) during period	0		26
Balance at end of period	10	5	10	5
Loss on Derivative Securities (Effective Portion)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(787)		0
Current period other comprehensive income (loss) before reclassifications	84		(896)
Reclassification of amounts to earnings	164		357
Net other comprehensive income (loss) during period	248		(539)
Balance at end of period	(539)		(539)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(869)	(642)	(1,311)	(290)
Current period other comprehensive income (loss) before reclassifications	(45)	(451)	397	(803)
Reclassification of amounts to earnings	0		0
Net other comprehensive income (loss) during period	(45)		397
Balance at end of period	(914)	(1,093)	(914)	(1,093)
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(1,646)	(647)	(1,327)	(308)
Current period other comprehensive income (loss) before reclassifications	39	(441)	(473)	(780)
Reclassification of amounts to earnings	164		357
Net other comprehensive income (loss) during period	203		(116)
Balance at end of period	$ (1,443)	$ (1,088)	$ (1,443)	$ (1,088)