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Fair Value Measurements (Reconciliation of Liability) (Details) - USD ($)
$ in Thousands
3 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Fair value at beginning of period $ 9,960 $ 0
Purchase price contingent consideration 1,300 10,400
Contingent consideration payments (518) 0
Change in fair value of contingent consideration (82) 0
Fair value at end of period $ 10,660 $ 10,400