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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Statement of Comprehensive Income [Abstract] |  |  |
Net income | $ 39,390 | $ 28,004 | $ 32,032
Other comprehensive income: |  |  |
Unrealized gain (loss) on available-for-sale securities, net of tax | (3) | (26) | 13
Comprehensive income | $ 39,387 | $ 27,978 | $ 32,045

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