XML 86 R75.htm IDEA: XBRL DOCUMENT v3.20.2
Note 16 - Stockholders' Equity - Summary of Changes in Stockholders' Equity (Details) - USD ($)
 3 Months Ended 9 Months Ended
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Jun. 30, 2020
Jun. 30, 2019
Balance $ 36,591,211 $ 36,389,531 $ 35,381,349 $ 33,770,543 $ 32,996,163 $ 33,489,207 $ 35,381,349 $ 33,489,207
Share-based compensation expense 322,025 295,290 158,327 257,566 171,977 133,845    
Issuance of common stock upon exercise of stock options, net (in shares)             512,019 35,282
Issuance of common stock upon exercise of stock options, net 738,844 113,833 144,214 9,449 42,644 2,528    
Other comprehensive income (loss) 51,274 (69,352) 85,314 56,538 (69,091) (54,335)    
Net income 1,504,077 301,575 620,327 638,041 1,178,850 1,045,940 $ 2,425,979 $ 2,862,831
Issuance of common stock upon vesting of restricted stock units            
Shares retained for payment of taxes in connection with net share settlement of restricted stock units (in shares)             (13,063) 0
Shares retained for payment of taxes in connection with net share settlement of restricted stock units   (41,410)            
Stock buyback   (398,256)     (550,000) (1,621,022)    
Balance $ 39,207,431 $ 36,591,211 $ 36,389,531 $ 34,732,137 $ 33,770,543 $ 32,996,163 $ 39,207,431 $ 34,732,137
Common Stock [Member]                
Balance (in shares) 33,118,729 33,033,330 32,949,987 32,572,118 32,589,321 33,176,146 32,949,987 33,176,146
Balance $ 331 $ 331 $ 330 $ 326 $ 326 $ 332 $ 330 $ 332
Share-based compensation expense    
Issuance of common stock upon exercise of stock options, net (in shares) 371,815 56,861 83,343 7,000 26,682 1,600    
Issuance of common stock upon exercise of stock options, net $ 4 $ 1    
Other comprehensive income (loss)    
Net income    
Issuance of common stock upon vesting of restricted stock units (in shares)     198,106   156,115      
Issuance of common stock upon vesting of restricted stock units     $ 2   $ 2      
Shares retained for payment of taxes in connection with net share settlement of restricted stock units (in shares)   (13,063)            
Shares retained for payment of taxes in connection with net share settlement of restricted stock units              
Stock buyback (in shares)   (156,505)     (200,000) (588,425)    
Stock buyback   $ (2)     $ (2) $ (6)    
Balance (in shares) 33,490,544 33,118,729 33,033,330 32,579,118 32,572,118 32,589,321 33,490,544 32,579,118
Balance $ 335 $ 331 $ 331 $ 326 $ 326 $ 326 $ 335 $ 326
Additional Paid-in Capital [Member]                
Balance 89,843,638 89,874,181 89,571,641 88,431,123 88,766,502 90,251,145 89,571,641 90,251,145
Share-based compensation expense 322,025 295,290 158,327 257,566 171,977 133,845    
Issuance of common stock upon exercise of stock options, net 738,840 113,833 144,213 9,449 42,644 2,528    
Other comprehensive income (loss)    
Net income    
Issuance of common stock upon vesting of restricted stock units     (2)   (2)      
Shares retained for payment of taxes in connection with net share settlement of restricted stock units   (41,410)            
Stock buyback   (398,254)     (549,998) (1,621,016)    
Balance 90,904,503 89,843,638 89,874,181 88,698,138 88,431,123 88,766,502 90,904,503 88,698,138
Retained Earnings [Member]                
Balance (52,810,001) (53,111,576) (53,731,903) (54,292,105) (55,470,955) (56,516,895) (53,731,903) (56,516,895)
Share-based compensation expense    
Issuance of common stock upon exercise of stock options, net    
Other comprehensive income (loss)    
Net income 1,504,077 301,575 620,327 638,041 1,178,850 1,045,940    
Issuance of common stock upon vesting of restricted stock units            
Shares retained for payment of taxes in connection with net share settlement of restricted stock units              
Stock buyback          
Balance (51,305,924) (52,810,001) (53,111,576) (53,654,064) (54,292,105) (55,470,955) (51,305,924) (53,654,064)
AOCI Attributable to Parent [Member]                
Balance (442,757) (373,405) (458,719) (368,801) (299,710) (245,375) (458,719) (245,375)
Share-based compensation expense    
Issuance of common stock upon exercise of stock options, net    
Other comprehensive income (loss) 51,274 (69,352) 85,314 56,538 (69,091) (54,335)    
Net income    
Issuance of common stock upon vesting of restricted stock units            
Shares retained for payment of taxes in connection with net share settlement of restricted stock units              
Stock buyback          
Balance $ (391,483) $ (442,757) $ (373,405) $ (312,263) $ (368,801) $ (299,710) $ (391,483) $ (312,263)