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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Statement Of Income And Comprehensive Income Abstract |  |  |
NET INCOME (LOSS) | $ 11,268 | $ 66,277 | $ 46,436
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAXES (BENEFIT): |  |  |
Net unrealized gain (loss) on investments, net of taxes (benefit) | 0 | 0 | 0
Net unrealized gain (loss) on derivatives, net of taxes (benefit) | 0 | 7,277 | 6,155
COMPREHENSIVE INCOME (LOSS) | $ 11,268 | $ 73,554 | $ 52,591

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