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SEGMENT INFORMATION (Schedule of Operating Income By Segment) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues $ 75,359 $ 97,479 [1] $ 87,721 [1]
Cost of revenues 66,924 82,179 79,776
Gross profit 8,435 15,300 [1] 7,945 [1]
Research and development 185 113 [1] 458 [1]
Selling and marketing 4,369 4,929 [1] 4,754 [1]
General and administrative 7,612 7,654 [1] 7,901 [1]
Other expenses (income) 315 [1] (4) [1]
Operating income (loss) (4,046) 2,604 [1] (5,164) [1]
Financial expense, net 770 422 88
Loss before tax benefits (4,816) 2,182 [1] (5,252) [1]
Sale of Products and Services [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 75,359 97,479 87,721
Intersegment Revenues [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues
Elimination of inter-company sales [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues (3,141) (6,287) (5,057)
Cost of revenues (2,937) (6,468) (5,343)
Gross profit (204) 181 286
Research and development
Selling and marketing
General and administrative
Other expenses (income)  
Operating income (loss) (204) 181 286
Elimination of inter-company sales [Member] | Sale of Products and Services [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues
Elimination of inter-company sales [Member] | Intersegment Revenues [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues (3,141) (6,287) (5,057)
OEM of Heat Transfer Solutions and Aviation Accessories [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 23,125 26,589 24,707
Cost of revenues 21,703 23,998 25,612
Gross profit 1,422 2,591 (905)
Research and development (3) 58 287
Selling and marketing 1,429 1,530 1,512
General and administrative 2,183 1,978 2,384
Other expenses (income)   (2)
Operating income (loss) (2,187) (975) (5,086)
OEM of Heat Transfer Solutions and Aviation Accessories [Member] | Sale of Products and Services [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 20,179 20,552 20,065
OEM of Heat Transfer Solutions and Aviation Accessories [Member] | Intersegment Revenues [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 2,946 6,037 4,642
MRO Services for heat transfer components and OEM of heat transfer solutions [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 20,640 34,433 31,344
Cost of revenues 17,885 27,852 27,659
Gross profit 2,755 6,581 3,685
Research and development (2) 83 98
Selling and marketing 1,152 1,638 1,660
General and administrative 2,054 2,734 2,375
Other expenses (income) 21  
Operating income (loss) (470) 2,126 (448)
MRO Services for heat transfer components and OEM of heat transfer solutions [Member] | Sale of Products and Services [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 20,445 34,183 30,929
MRO Services for heat transfer components and OEM of heat transfer solutions [Member] | Intersegment Revenues [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 195 250 415
MRO services for Aviation Components [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 31,189 38,687 32,487
Cost of revenues 26,961 33,337 28,561
Gross profit 4,228 5,350 3,926
Research and development 7 7
Selling and marketing 1,527 1,334 1,324
General and administrative 2,732 2,408 2,631
Other expenses (income)   (2)
Operating income (loss) (38) 1,601 (27)
MRO services for Aviation Components [Member] | Sale of Products and Services [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 31,189 38,687 32,487
MRO services for Aviation Components [Member] | Intersegment Revenues [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues
Overhaul and coating of jet engine components [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 3,546 4,057 4,240
Cost of revenues 3,312 3,460 3,287
Gross profit 234 597 953
Research and development 183 (35) 73
Selling and marketing 261 427 258
General and administrative 643 534 511
Other expenses (income) 294  
Operating income (loss) (1,147) (329) 111
Overhaul and coating of jet engine components [Member] | Sale of Products and Services [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues 3,546 4,057 4,240
Overhaul and coating of jet engine components [Member] | Intersegment Revenues [Member]      
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]      
Revenues
[1] Reclassified due to discontinued operation.