Profit Sharing, Employee Stock Ownership, Employee Stock Purchase and Pension Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 01, 2018	Apr. 02, 2017	Apr. 03, 2016
Defined Contribution Plan Disclosure [Line Items]
Profit sharing	$ 779	$ 741	$ 1,393
401(k) matching contributions	2,143	1,996	1,586
ESOP	779	741	1,393
Nonqualified deferred compensation plan	1,258	1,383	0
ESPP - all employees	364	364	274
Total contribution expense	5,819	5,734	5,090
Bargaining Unit Employee Plans [Member]
Defined Contribution Plan Disclosure [Line Items]
Bargaining unit employee plans	$ 496	$ 509	$ 444