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Fair Value of Financial Instruments (Schedule of Fair Value of Contingent Consideration) (Details)
$ in Thousands
9 Months Ended
Dec. 30, 2017
USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Beginning balance $ 4,695
Adjustment to estimates (research and development expense) (4,049)
Fair value charge recognized in earnings (research and development expense) 25
Ending balance $ 671