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Fair Value Measurements Fair value hierarchy the Company’s financial assets and liabilities (Details) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
May. 08, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High     $ 90,000,000
Business Combination, Contingent Consideration, Liability $ 0 $ 18,260,000 $ 11,900,000