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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) (Parenthetical) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
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Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Unrealized gain from derivatives, income tax benefit |  |  | $ 161
Net change in unrealized gains and losses on marketable securities, income tax benefit | $ 682 | $ 2,380 | $ 7,475

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- Definition Other Comprehensive Income Net Unrealized Gains Losses On Marketable Securities Net Of Tax, Tax Amount + References No definition available. + Details
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- Definition Other comprehensive income unrealized hedging gains losses net of tax tax amount. + References No definition available. + Details
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