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Condensed Consolidated Statements of Operations (Unaudited) - USD ($)
 3 Months Ended 9 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Revenues:        
Revenues $ 11,971,096 $ 8,863,726 $ 29,029,571 $ 29,232,976
Cost of revenues 5,499,914 4,261,733 13,946,392 14,351,217
Gross Profit 6,471,182 4,601,993 15,083,179 14,881,759
Operating expenses        
Selling, general and administrative 3,330,365 2,712,846 8,884,230 7,939,232
Research and development 1,199,635 1,202,686 3,232,369 3,530,805
Total operating expenses 4,530,000 3,915,532 12,116,599 11,470,037
Income from operations 1,941,182 686,461 2,966,580 3,411,722
Other income 36,227 69,890 201,889 126,566
Income before income taxes 1,977,409 756,351 3,168,469 3,538,288
Income tax expense 473,332 118,310 742,490 675,457
Net income $ 1,504,077 $ 638,041 $ 2,425,979 $ 2,862,831
Net income per common share:        
Basic (in dollars per share) $ 0.05 $ 0.02 $ 0.07 $ 0.09
Diluted (in dollars per share) $ 0.04 $ 0.02 $ 0.07 $ 0.09
Weighted average common shares outstanding:        
Basic (in shares) 33,289,426 32,575,118 33,122,042 32,684,311
Diluted (in shares) 34,280,915 33,372,777 33,878,243 33,341,057
Product [Member]        
Revenues:        
Revenues $ 10,932,719 $ 8,037,460 $ 26,494,138 $ 26,726,151
Service [Member]        
Revenues:        
Revenues $ 1,038,377 $ 826,266 $ 2,535,433 $ 2,506,825