Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Statement of Comprehensive Income [Abstract]        
Net income $ 12,201 $ 12,273 $ 23,481 $ 19,011
Other comprehensive (loss) income, net of tax:        
Foreign currency translation adjustment (327) 16 (275) 153
Release of cumulative translation adjustment 132 (82) 132 (82)
Net change in foreign currency translation adjustment (195) (66) (143) 71
Unrealized (losses) gains on available-for-sale securities (1) 2 7 2
Comprehensive income $ 12,005 $ 12,209 $ 23,345 $ 19,084