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 Other Comprehensive Income [Abstract]
Net income	$ 21,317	$ 27,934	$ 69,582	$ 92,862
Other comprehensive (loss) income, net of tax:
Unrealized (loss) gain of hedge derivatives	(240)	80	(3,225)	80
Foreign currency translation gain (loss)	19	(28)	(48)	(31)
Total other comprehensive (loss) gain	(221)	52	(3,273)	49
COMPREHENSIVE INCOME	$ 21,096	$ 27,986	$ 66,309	$ 92,911

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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Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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