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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Cumulative-effect adjustment for adoption of ASC 842
Common Stock
Treasury Stock
Additional Paid-In Capital
Accumulated Deficit
Accumulated Deficit
Cumulative-effect adjustment for adoption of ASC 842
Beginning Balance (in shares) at Sep. 30, 2018     11,899,000 0      
Beginning Balance at Sep. 30, 2018 $ 39,418   $ 12 $ 0 $ 84,285 $ (44,879)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Expense related to director restricted stock unit (in shares)     102,000        
Expense related to director restricted stock unit 395       395    
Expense related to employee stock options 196       196    
Exercise of stock options (in shares)     35,000        
Exercise of stock options 39       39    
Net income 3,758         803  
Ending Balance (in shares) at Jun. 30, 2019     12,036,000 0      
Ending Balance at Jun. 30, 2019 43,806   $ 12 $ 0 84,915 (41,121)  
Beginning Balance (in shares) at Mar. 31, 2019     12,036,000 0      
Beginning Balance at Mar. 31, 2019 42,804   $ 12 $ 0 84,716 (41,924)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Expense related to director restricted stock unit 199       199    
Net income 803         3,758  
Ending Balance (in shares) at Jun. 30, 2019     12,036,000 0      
Ending Balance at Jun. 30, 2019 $ 43,806   $ 12 $ 0 84,915 (41,121)  
Beginning Balance (in shares) at Sep. 30, 2019 12,036,000   12,036,000 0      
Beginning Balance at Sep. 30, 2019 $ 45,571 $ (2) $ 12 $ 0 85,114 (39,555) $ (2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Expense related to director restricted stock unit (in shares)     90,000        
Expense related to director restricted stock unit 260       260    
Expense related to employee stock options $ 306       306    
Exercise of stock options (in shares) 345,000   345,000        
Exercise of stock options $ 27       27    
Repurchases of common stock (in shares)       28,000      
Repurchases of common stock (113)     $ (113)      
Cancellation of common stock (in shares)     (117,000) (28,000)      
Cancellation of common stock (98)     $ 113 (211)    
Net income $ 5,752         5,752  
Ending Balance (in shares) at Jun. 30, 2020 12,354,000   12,354,000 0      
Ending Balance at Jun. 30, 2020 $ 51,703   $ 12 $ 0 85,496 (33,805)  
Beginning Balance (in shares) at Mar. 31, 2020     12,354,000 0      
Beginning Balance at Mar. 31, 2020 49,397   $ 12 $ 0 85,314 (35,929)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Expense related to director restricted stock unit 87       87    
Expense related to employee stock options 95       95    
Net income $ 2,124         2,124  
Ending Balance (in shares) at Jun. 30, 2020 12,354,000   12,354,000 0      
Ending Balance at Jun. 30, 2020 $ 51,703   $ 12 $ 0 $ 85,496 $ (33,805)