SEGMENT INFORMATION (Details) - USD ($) $ in Thousands		3 Months Ended						9 Months Ended
		Dec. 26, 2020	Sep. 26, 2020	Jun. 27, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Dec. 26, 2020	Dec. 28, 2019
Revenue:
Revenue		$ 44,062			$ 43,179			$ 124,573	$ 127,337
Gross Profit:
Gross Profit		11,245			9,928			32,148	30,425
Operating Expenses:
Operating Expenses		8,726			7,837			25,587	23,317
Operating Income:
Operating Income		2,519			2,091			6,561	7,108
Unallocated Amounts:
Interest and Other Expense, net		219			194			779	776
Provision for Income Taxes		539			420			1,199	758
Unallocated Amounts		758			614			1,978	1,534
Net Income		1,761	$ 2,024	$ 798	1,477	$ 2,379	$ 1,718	4,583	5,574
Service Segment [Member]
Revenue:
Revenue		24,776			22,087			72,297	67,987
Gross Profit:
Gross Profit		6,915			4,866			20,884	16,250
Operating Expenses:
Operating Expenses	[1]	4,959			4,378			14,822	13,187
Operating Income:
Operating Income		563			488			6,062	3,063
Distribution [Member]
Revenue:
Revenue		19,286			21,092			52,276	59,350
Gross Profit:
Gross Profit		4,330			5,062			11,264	14,175
Operating Expenses:
Operating Expenses	[1]	3,767			3,459			10,765	10,130
Operating Income:
Operating Income		$ 1,956			$ 1,603			$ 499	$ 4,045

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