2011 EQUITY INCENTIVE PLAN (Schedule of Unrecognized Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands		3 Months Ended
		Jun. 29, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized expense	[1]	$ 11	$ 22
IEH employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized expense
Non-employee directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized expense		$ 11	$ 22

[1] Unrecognized stock-based compensation expense related to prior years' equity grants of stock options to non-employee directors, that had not vested as of the end of the applicable fiscal year.