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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME    
Net income $ 4,864 $ 7,228
Foreign currency translation gain (loss) (net of tax) (1,886) 109
Net unrealized gains on investment securities (net of tax) 24 44
Total comprehensive income $ 3,002 $ 7,381