Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 15,976	$ 6,588	$ 19,260	$ 9,308
Other comprehensive loss, net of reclassification adjustments and taxes:
Unrealized gains (losses) on interest rate swap contracts	(103)	(90)	(420)	112
Foreign currency translation adjustments	(971)	(4,414)	(302)	(1,942)
Other comprehensive loss	(1,074)	(4,504)	(722)	(1,830)
Comprehensive income	$ 14,902	$ 2,084	$ 18,538	$ 7,478

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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