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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Total
Balance (in shares) at Sep. 30, 2018 33,176,146        
Balance at Sep. 30, 2018 $ 332 $ 90,251 $ (56,517) $ (246) $ 33,488
Share-based compensation expense 735 $ 735
Issuance of common stock upon exercise of stock options, net (in shares) 406,151       406,151
Issuance of common stock upon exercise of stock options, net $ 4 757 $ 757
Issuance of common stock upon vesting of restricted stock units (in shares) 156,115       156,115
Issuance of common stock upon vesting of restricted stock units $ 2
Stock buyback (in shares) (788,425)        
Stock buyback $ (8) (2,171) (2,171)
Other comprehensive income (loss) (213) (213)
Net income 2,785 2,785
Balance (in shares) at Sep. 30, 2019 32,949,987        
Balance at Sep. 30, 2019 $ 330 89,572 (53,732) (459) 35,381
Share-based compensation expense 980 $ 980
Issuance of common stock upon exercise of stock options, net (in shares) 583,019       583,019
Issuance of common stock upon exercise of stock options, net $ 6 1,136 $ 1,136
Issuance of common stock upon vesting of restricted stock units (in shares) 198,106       198,106
Issuance of common stock upon vesting of restricted stock units $ 2
Stock buyback (in shares) (156,505)        
Stock buyback $ (2) (398) (398)
Other comprehensive income (loss) 209 209
Net income 11,874 11,874
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 (42) (42)
Balance (in shares) at Sep. 30, 2020 33,561,544        
Balance at Sep. 30, 2020 $ 336 $ 91,248 $ (41,858) $ (250) $ 49,140