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CONSOLIDATED STATEMENTS OF OTHER COMPREHENSIVE INCOME (LOSS) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Statement of Other Comprehensive Income [Abstract]      
Consolidated net income (loss) $ 38,647 $ (18,791) $ 13,743
Other comprehensive income (loss):      
Change in unrealized value of investments (79) (25) (76)
Foreign currency translation adjustment (559) 343 (456)
Other comprehensive income (loss) (638) 318 (532)
Comprehensive income (loss) $ 38,009 $ (18,473) $ 13,211