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SEGMENT INFORMATION (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Dec. 28, 2019
Sep. 28, 2019
Jun. 29, 2019
Dec. 29, 2018
Sep. 29, 2018
Jun. 30, 2018
Dec. 28, 2019
Dec. 29, 2018
Revenue:                
Revenue $ 43,179     $ 40,868     $ 127,337 $ 116,405
Gross Profit:                
Gross Profit 9,928     9,548     30,425 27,800
Operating Expenses:                
Operating Expenses [1] 7,837     7,154     23,317 21,205
Operating Income:                
Operating Income 2,091     2,394     7,108 6,595
Unallocated Amounts:                
Interest and Other Expense, net 194     295     776 715
Provision for Income Taxes 420     530     758 1,395
Unallocated Amounts 614     825     1,534 2,110
Net Income 1,477 $ 2,379 $ 1,718 1,569 $ 1,488 $ 1,428 5,574 4,485
Service Segment [Member]                
Revenue:                
Revenue 22,087     20,492     67,987 59,719
Gross Profit:                
Gross Profit 4,866     4,488     16,250 14,214
Operating Expenses:                
Operating Expenses [1] 4,378     3,910     13,187 11,443
Operating Income:                
Operating Income 488     578     3,063 2,771
Distribution [Member]                
Revenue:                
Revenue 21,092     20,376     59,350 56,686
Gross Profit:                
Gross Profit 5,062     5,060     14,175 13,586
Operating Expenses:                
Operating Expenses [1] 3,459     3,244     10,130 9,762
Operating Income:                
Operating Income $ 1,603     $ 1,816     $ 4,045 $ 3,824
[1] Operating expense allocations between segments were based on actual amounts, a percentage of revenues, headcount, and management's estimates.