Schedule of Fair Value of Contingent Consideration Rollforward (Table)

9 Months Ended

Dec. 24, 2016

Business Combination, Contingent Consideration, Liability [Abstract]

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	Nine Months Ended
	December 24,
	2016
	(in thousands)
Beginning balance	$	9,068
Adjustment to estimates (research and development expense)		(3,554)
Fair value charge recognized in earnings (research and development expense)		333
Ending balance	$	5,847