CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME UNAUDITED - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME UNAUDITED [Abstract]
Net income	$ 19,892	$ 27,261
Other comprehensive gain, net of tax:
Foreign currency translation	20	89
Other comprehensive gain	20	89
Comprehensive income	$ 19,912	$ 27,350

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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