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Consolidated Statements of Comprehensive Income (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
NET INCOME (LOSS) $ 5,915 $ 2,179 $ (2,857)
Other comprehensive income (loss), net of tax:      
Reclassification adjustment for realized gains on marketable securities included in net income (1) (215) [1] (1,009) [1] (526) [1]
Reclassification adjustment for unrealized losses on marketable securities included in net income (2) 18 [2] 44 [2] 196 [2]
Changes in fair value of marketable securities (3) 2,122 [3] 495 [3] 629 [3]
COMPREHENSIVE INCOME (LOSS) $ 7,840 $ 1,709 $ (2,558)
[1] Net of deferred income taxes of $(131), $(618) and $(322), respectively.
[2] Net of deferred income taxes of $11, $27 and $120, respectively.
[3] Net of deferred income taxes of $1,298, $304 and $386, respectively.