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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Net income $ 3,397 $ 6,248 $ 7,657 $ 10,692
Other comprehensive income, net of tax        
Change in foreign currency translation, net of tax 2 0 14 0
Change in fair value of marketable securities, net of tax 36 (162) 107 13
Adjustment for net (gains)/losses realized and included in net income, net of tax 56 (14) 65 (101)
Total change in unrealized losses on marketable securities, net of tax 92 (176) 172 (88)
Other comprehensive income (loss) 94 (176) 186 (88)
Comprehensive income $ 3,491 $ 6,072 $ 7,843 $ 10,604