Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 334	$ 2,632
Foreign currency translation adjustments	1,713	2,432
Change in fair value of interest rate cap, net of tax	0	148
Change in fair value of interest rate swap, net of tax	0	55
Comprehensive income	$ 2,047	$ 5,267

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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