Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Condensed Consolidated Statements of Comprehensive Income
Net income		$ 8,359	$ 5,990	$ 15,443	$ 14,158
Other comprehensive (loss) income:
Currency translation adjustment		(817)	226	(232)	326
Unrealized gain (loss) on derivative instruments		384	(338)	1,415	(3)
Net (loss) gain recognized in other comprehensive income		(433)	(112)	1,183	323
Tax benefit (expense) related to items of other comprehensive income		98	40	(267)	(112)
Impact from adoption of ASU 2018-02	[1]			59
Other comprehensive (loss) income		(335)	(72)	975	211
Total comprehensive income		$ 8,024	$ 5,918	$ 16,418	$ 14,369

[1] Reflects the stranded tax effects from change in tax rate as a result of the early adoption of ASU 2018-02 which has been reclassified to retained earnings.