SEGMENT INFORMATION (Schedule of Segment Information) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Sep. 23, 2017	Sep. 24, 2016	Sep. 23, 2017	Sep. 24, 2016
Revenue:
Revenue		$ 35,927	$ 34,485	$ 72,206	$ 67,632
Gross Profit:
Gross Profit		8,154	8,027	16,845	16,273
Operating Expenses:
Operating Expenses		6,696	6,449	13,976	13,257
Operating Income:
Operating Income		1,458	1,578	2,869	3,016
Unallocated Amounts:
Interest and Other Expense, net		271	191	543	359
Provision for Income Taxes		406	470	689	834
Net Income		781	917	1,637	1,823
Service Segment [Member]
Revenue:
Revenue		18,239	16,947	36,721	34,122
Gross Profit:
Gross Profit		4,320	4,140	8,956	8,869
Operating Expenses:
Operating Expenses	[1]	3,530	3,349	7,281	7,034
Operating Income:
Operating Income		790	791	1,675	1,835
Distribution [Member]
Revenue:
Revenue		17,688	17,538	35,485	33,510
Gross Profit:
Gross Profit		3,824	3,887	7,889	7,404
Operating Expenses:
Operating Expenses	[1]	3,166	3,100	6,695	6,223
Operating Income:
Operating Income		668	787	1,194	1,181
Segment Reconciling Items [Member]
Unallocated Amounts:
Interest and Other Expense, net		271	191	543	359
Provision for Income Taxes		406	491	689	834
Unallocated Amounts		$ 677	$ 682	$ 1,232	$ 1,193

[1] Operating expense allocations between segments are based on actual amounts, a percentage of revenues, headcount and management's estimates.