EMPLOYEE BENEFIT PLANS (Components of Net Periodic Postretirement Benefit Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Net periodic post-retirement benefit cost:
Service cost	$ 40	$ 34
Interest cost	44	44
Amortization of prior service cost	1	1
Net periodic postretirement benefit cost	85	79
Benefit obligations recognized in other comprehensive income:
Amortization of prior service cost	(1)	(1)
Net gain	171	4
Benefit obligations recognized in other comprehensive income	170	3
Total recognized in net periodic benefit cost and other comprehensive income	255	82
Amount recognized in accumulated other comprehensive income, at end of fiscal year:
Unrecognized prior service cost	$ 405	$ 235