Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS

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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Statement of Comprehensive Income [Abstract]    
NET INCOME $ 48,525 $ 40,270
Other comprehensive earnings (loss), net of tax    
Foreign currency translation adjustments (2,952) 4,007
Other comprehensive earnings (loss) (2,952) 4,007
Comprehensive earnings $ 45,573 $ 44,277