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Consolidated Statement of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Treasury Stock
Accumulated Other Comprehensive Loss
Accumulated Deficit
Balance (in shares) at Sep. 30, 2019   33,687,115        
Balance at Sep. 30, 2019 $ 116,175 $ 34 $ 242,686   $ (7,973) $ (118,572)
Increase (Decrease) in Stockholders' Equity            
Net income (5,196)         (5,196)
Exercise of stock options, grants of restricted stock awards, and vesting of restricted stock units             2   2      
Exercise of stock options, grants of restricted stock awards, and vesting of restricted stock units (in shares)   283,164        
Taxes paid associated with net settlement of stock compensation awards (in shares)   67,688        
Taxes paid associated with net settlement of stock compensation awards (498)   (498)      
Forfeitures of restricted stock awards (in shares)   (15,000)        
Forfeitures of restricted stock awards 0          
Balance (in shares) at Dec. 31, 2019   33,887,591        
Balance at Dec. 31, 2019 112,437 $ 34 243,311   (7,140) (123,768)
Balance (in shares) at Sep. 30, 2019   33,687,115        
Balance at Sep. 30, 2019 116,175 $ 34 242,686   (7,973) (118,572)
Increase (Decrease) in Stockholders' Equity            
Net income (9,434)          
Common stock surrendered in the exercise of stock options 0          
Balance (in shares) at Mar. 31, 2020   33,988,798        
Balance at Mar. 31, 2020 108,112 $ 34 244,527   (8,443) (128,006)
Balance (in shares) at Dec. 31, 2019   33,887,591        
Balance at Dec. 31, 2019 112,437 $ 34 243,311   (7,140) (123,768)
Increase (Decrease) in Stockholders' Equity            
Net income (4,238)         (4,238)
Exercise of stock options, grants of restricted stock awards, and vesting of restricted stock units             32   32      
Exercise of stock options, grants of restricted stock awards, and vesting of restricted stock units (in shares)   111,272        
Taxes paid associated with net settlement of stock compensation awards (in shares)   10,065        
Taxes paid associated with net settlement of stock compensation awards (60)   (60)      
Balance (in shares) at Mar. 31, 2020   33,988,798        
Balance at Mar. 31, 2020 108,112 $ 34 244,527   (8,443) (128,006)
Balance (in shares) at Sep. 30, 2020   34,082,406   547,508    
Balance at Sep. 30, 2020 111,815 $ 34 247,892 $ (3,983) (9,782) (122,346)
Increase (Decrease) in Stockholders' Equity            
Net income 4,514         4,514
Exercise of stock options, grants of restricted stock awards, and vesting of restricted stock units             197   197      
Exercise of stock options, grants of restricted stock awards, and vesting of restricted stock units (in shares)   151,845        
Taxes paid associated with net settlement of stock compensation awards (in shares)   (7,703)        
Taxes paid associated with net settlement of stock compensation awards (57)   (57)      
Forfeitures of restricted stock awards (in shares)   (13,733)        
Forfeitures of restricted stock awards 0          
Common stock repurchased (in shares)       (309,496)    
Common stock repurchased (4,103)     $ (4,103)    
Common stock surrendered in the exercise of stock options (in shares)       (9,384)    
Common stock surrendered in the exercise of stock options     169 $ (169)    
Stock compensation expense 1,801   1,801      
Foreign currency translation 896       896  
Balance (in shares) at Dec. 31, 2020   34,212,815   866,388    
Balance at Dec. 31, 2020 115,063 $ 34 250,002 $ (8,255) (8,886) (117,832)
Balance (in shares) at Sep. 30, 2020   34,082,406   547,508    
Balance at Sep. 30, 2020 111,815 $ 34 247,892 $ (3,983) (9,782) (122,346)
Increase (Decrease) in Stockholders' Equity            
Net income 9,775          
Common stock surrendered in the exercise of stock options (in shares)       (82,612)    
Common stock surrendered in the exercise of stock options 1,502          
Balance (in shares) at Mar. 31, 2021   35,115,307   1,587,199    
Balance at Mar. 31, 2021 106,938 $ 35 249,866 $ (21,628) (8,763) (112,572)
Balance (in shares) at Dec. 31, 2020   34,212,815   866,388    
Balance at Dec. 31, 2020 115,063 $ 34 250,002 $ (8,255) (8,886) (117,832)
Increase (Decrease) in Stockholders' Equity            
Net income 5,260         5,260
Exercise of stock options, grants of restricted stock awards, and vesting of restricted stock units             155 $ 1 154      
Exercise of stock options, grants of restricted stock awards, and vesting of restricted stock units (in shares)   1,079,955        
Taxes paid associated with net settlement of stock compensation awards (in shares)   177,463        
Taxes paid associated with net settlement of stock compensation awards (3,145)   (3,145)      
Common stock repurchased (in shares)       (647,583)    
Common stock repurchased (12,040)     $ (12,040)    
Common stock surrendered in the exercise of stock options (in shares)       (73,228)    
Common stock surrendered in the exercise of stock options 0   1,333 $ (1,333)    
Stock compensation expense 1,522   1,522      
Foreign currency translation 123       123  
Balance (in shares) at Mar. 31, 2021   35,115,307   1,587,199    
Balance at Mar. 31, 2021 $ 106,938 $ 35 $ 249,866 $ (21,628) $ (8,763) $ (112,572)