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Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) (USD $)
In Millions, unless otherwise specified |
12 Months Ended |
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Dec. 31, 2014
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| Statement of Comprehensive Income [Abstract] | |
| Unrealized gain (loss) on available-for-sale securities, tax provision (benefit) | $ 0.2us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax |
| X | ||||||||||
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- Definition
Amount of tax expense (benefit) before reclassification adjustments of unrealized holding gain (loss) on available-for-sale securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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