Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Other Comprehensive Income (Loss), before Tax [Abstract]
Foreign currency translation adjustment	$ 63	$ 95
Reclassification of net losses on derivative instruments	153	153
Total Other Comprehensive (Loss) Income	216	248
Other Comprehensive Income (Loss), Tax [Abstract]
Foreign currency translation adjustment	0	0
Reclassification of net losses on derivative instruments	(41)	(40)
Total Other Comprehensive (Loss) Income	(41)	(40)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	63	95
Reclassification of net losses on derivative instruments	112	113
Total Other Comprehensive Income	$ 175	$ 208