SEGMENT INFORMATION (Details) - USD ($) $ in Thousands		3 Months Ended					6 Months Ended
		Sep. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Sep. 29, 2018	Jun. 30, 2018	Sep. 28, 2019	Sep. 29, 2018
Revenue:
Revenue			$ 41,763		$ 38,879		$ 84,158	$ 75,537
Gross Profit:
Gross Profit			10,445		9,139		20,497	18,252
Operating Expenses:
Operating Expenses			7,386		6,963		15,480	14,051
Operating Income:
Operating Income			3,059		2,176		5,017	4,201
Unallocated Amounts:
Interest and Other Expense, net			297		195		582	420
Provision for Income Taxes			383		493		338	865
Unallocated Amounts			680		688		920	1,285
Net Income		$ 2,379	2,379	$ 1,718	1,488	$ 1,428	4,097	2,916
Service Segment [Member]
Revenue:
Revenue			23,502		19,902		45,900	39,227
Gross Profit:
Gross Profit			6,012		4,807		11,384	9,726
Operating Expenses:
Operating Expenses	[1]		4,175		3,682		8,809	7,533
Operating Income:
Operating Income	[1]		1,837		1,125		2,575	2,193
Distribution [Member]
Revenue:
Revenue			18,261		18,977		38,258	36,310
Gross Profit:
Gross Profit			4,433		4,332		9,113	8,526
Operating Expenses:
Operating Expenses	[1]		3,211		3,281		6,671	6,518
Operating Income:
Operating Income	[1]		$ 1,222		$ 1,051		$ 2,442	$ 2,008

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