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Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
NET INCOME $ 2,935 $ 5,369
Other comprehensive income, net of tax:    
Reclassification adjustment for realized losses on marketable securities included in net income (1) [1] 51
Reclassification adjustment for unrealized losses on marketable securities included in net income, net of income taxes (2) [2] 146
Changes in fair value of marketable securities (3) [3] 296 $ 62
COMPREHENSIVE INCOME $ 3,428 $ 5,431
[1] Net of deferred income taxes of $31 and $0, respectively.
[2] Net of deferred income taxes $181 and $38, respectively.
[3] Net of deferred income taxes of $181 and $38, respectively.