Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 2,141	$ 3,244	$ 5,694	$ 9,451
Foreign currency translation adjustments	(3,451)	(457)	(2,118)	(3,662)
Change in fair value of interest rate cap, net of tax	0	47	0	252
Change in fair value of interest rate swap, net of tax	0	(12)	0	47
Comprehensive income (loss)	$ (1,310)	$ 2,822	$ 3,576	$ 6,088

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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