2011 EQUITY INCENTIVE PLAN (Schedule of Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Dec. 28, 2018	Dec. 29, 2017	Dec. 28, 2018	Dec. 29, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock option expense	[1]	$ 21	$ 3	$ 27	$ 25
IEH employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock option expense
Non-employee directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock option expense		$ 21	$ 3	$ 27	$ 25

[1] The Company reported compensation expense of $2,798 during the quarter ended December 28, 2018 and $2,798 during the quarter ended December 29, 2017 resulting from stock options granted on August 15, 2016.