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Fair Value Measurements (Change in Fair Value of Contingent Consideration) (Details) - Contingent Consideration
$ in Thousands
12 Months Ended
Mar. 31, 2017
USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Beginning of period $ 0
Fair value of contingent consideration upon acquisition 18,000
Change in fair value of contingent consideration (8,092)
End of period $ 9,908