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SCHEDULE OF SEGMENTS (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Segment Reporting Information [Line Items]          
Assets $ 37,227,000 $ 33,602,000 $ 37,227,000 $ 33,602,000 $ 37,912,000
Revenue 6,234,000 8,119,000 19,998,000 18,579,000  
Operating (loss) income (990,000) 122,000 (2,410,000) (1,602,000)  
Pretax (loss) income (753,000) 63,000 (1,895,000) (1,772,000)  
Depreciation and amortization 153,000 136,000 545,000 538,000  
Purchase of property, plant & equipment 83,000 610,000 [1] 308,000 1,070,000 [2]  
Operating Segments [Member] | CVD Equipment [Member]          
Segment Reporting Information [Line Items]          
Assets 32,915,000 22,415,000 32,915,000 22,415,000  
Revenue 4,795,000 5,718,000 13,774,000 12,324,000  
Operating (loss) income (323,000) (32,000) (581,000) (1,391,000)  
Pretax (loss) income (262,000) (27,000) (518,000) (1,380,000)  
Depreciation and amortization 137,000 107,000 404,000 439,000  
Purchase of property, plant & equipment 83,000 610,000 [1] 298,000 1,038,000 [2]  
Operating Segments [Member] | SDC [Member]          
Segment Reporting Information [Line Items]          
Assets 4,237,000 8,800,000 4,237,000 8,800,000  
Revenue 1,572,000 1,663,000 5,679,000 4,669,000  
Operating (loss) income 436,000 448,000 1,430,000 1,117,000  
Pretax (loss) income 434,000 448,000 1,430,000 1,117,000  
Depreciation and amortization 12,000 12,000 36,000 37,000  
Purchase of property, plant & equipment [1] 10,000 2,000 [2]  
Operating Segments [Member] | CVD Materials [Member]          
Segment Reporting Information [Line Items]          
Assets 177,000 2,345,000 177,000 2,345,000  
Revenue 90,000 809,000 1,099,000 2,083,000  
Operating (loss) income (35,000) 365,000 (178,000) [3] 642,000  
Pretax (loss) income (31,000) 257,000 (126,000) [3] 394,000  
Depreciation and amortization 4,000 17,000 105,000 62,000  
Purchase of property, plant & equipment [1] 30,000 [2]  
Intersegment Eliminations [Member]          
Segment Reporting Information [Line Items]          
Assets (102,000) 42,000 (102,000) 42,000  
Revenue (223,000) (71,000) (554,000) (497,000)  
Operating (loss) income (76,000) (104,000)  
Pretax (loss) income (76,000) (104,000)  
Depreciation and amortization  
Purchase of property, plant & equipment [1] [2]  
Intersegment Eliminations [Member] | CVD Equipment [Member]          
Segment Reporting Information [Line Items]          
Revenue 39,000   100,000    
Intersegment Eliminations [Member] | SDC [Member]          
Segment Reporting Information [Line Items]          
Revenue 200,000 72,000 600,000 500,000  
Corporate, Non-Segment [Member]          
Segment Reporting Information [Line Items]          
Assets  
Revenue  
Operating (loss) income (992,000) (659,000) (2,977,000) (1,970,000)  
Pretax (loss) income (818,000) (615,000) (2,577,000) (1,903,000)  
Depreciation and amortization  
Purchase of property, plant & equipment [1] [2]  
[1] Includes $0.4 million of purchased equipment financed with a loan.
[2] Includes $0.4 million of purchased equipment financed with a loan.
[3] Includes loss on sale of Tantaline of $0.2 million and an impairment charge related to MesoScribe fixed assets of $0.1 million.