Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 9,836	$ 12,891	$ 20,247
Foreign currency translation adjustments	(6,914)	6,686	(8,661)
Change in fair value of interest rate cap, net of tax	142	(142)	0
Change in fair value of interest rate swap, net of tax	(63)	63	0
Comprehensive income	$ 3,001	$ 19,498	$ 11,586

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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