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Condensed Consolidated Statements of Operations (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Revenues:    
Revenues $ 8,028 $ 8,782
Cost of revenues 4,324 4,180
Gross Profit 3,704 4,602
Operating expenses    
Selling, general and administrative 3,331 2,822
Research and development 1,066 1,084
Total operating expenses 4,397 3,906
(Loss) income from operations (693) 696
Other income 69 96
(Loss) income before income taxes (624) 792
Income tax (benefit) expense (5) 172
Net (loss) income $ (619) $ 620
Net (loss) income per common share - basic and diluted (in dollars per share) $ (0.02) $ 0.02
Weighted average common shares outstanding:    
Basic (in shares) 33,574,000 32,978,000
Diluted (in shares) 33,573,755 33,710,620
Product [Member]    
Revenues:    
Revenues $ 6,950 $ 8,008
Service [Member]    
Revenues:    
Revenues $ 1,078 $ 774