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Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
NET INCOME $ 21,436 $ 13,491 $ 5,915
Other comprehensive income (loss), net of tax:      
Reclassification adjustment for realized gains on marketable securities included in net income (1) [1] (646) (630) (215)
Reclassification adjustment for unrealized losses on marketable securities included in net income (2) [2] 516 1 18
Changes in fair value of marketable securities (3) [3] (962) 871 2,122
COMPREHENSIVE INCOME $ 20,344 $ 13,733 $ 7,840
[1] Net of deferred income taxes of $(396), $(385), and $(131), respectively.
[2] Net of deferred income taxes of $316, $0, and $11, respectively.
[3] Net of deferred income taxes of $(588), $533, and $1,298, respectively.