Condensed Consolidated Statements of Comprehensive Income (Unaudited) - 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	$ 19,983	$ 13,628	$ 39,243	$ 22,936
Other comprehensive loss, net of reclassification adjustments and taxes:
Unrealized losses on interest rate swap contracts	0	(234)	(420)	(122)
Foreign currency translation adjustments	(2,825)	(907)	(3,127)	(2,849)
Other comprehensive loss	(2,825)	(1,141)	(3,547)	(2,971)
Comprehensive income	$ 17,158	$ 12,487	$ 35,696	$ 19,965

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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