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Fair Value Measurements (Details 2) (Redeemable Non-Controlling Interest, Fair value measurement on a recurring basis, Significant Unobservable Inputs (Level 3))
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3 Months Ended |
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Mar. 31, 2015
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Redeemable Non-Controlling Interest | Fair value measurement on a recurring basis | Significant Unobservable Inputs (Level 3)
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| Assets and liabilities measured at fair value on a non-recurring basis | |
| Fair value inputs, discount rate | 15.50% |