Annual report pursuant to Section 13 and 15(d)

Equity and Stock-Based Compensation - Summary of Stock Options Outstanding and Exercisable (Details)

v3.22.2.2
Equity and Stock-Based Compensation - Summary of Stock Options Outstanding and Exercisable (Details) - $ / shares
12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2019
Options Outstanding        
Number Outstanding 589,341      
Stock Options        
Options Outstanding        
Number Outstanding 589,341 608,269 696,665 1,068,665
Weighted Average Exercise Price Per Share $ 8.06 $ 6.48 $ 7.00 $ 7.04
Options Exercisable        
Number Exercisable 358,343 403,853 611,542  
Weighted Average Exercise Price Per Share $ 6.92 $ 6.87 $ 7.19  
Stock Options | 2.95-4.90        
Options Outstanding        
Range of Exercise Prices, Lower limit 2.95      
Range of Exercise Prices, Upper limit $ 4.90      
Number Outstanding 62,000      
Remaining Contractual Life 5 years 8 months 19 days      
Weighted Average Exercise Price Per Share $ 4.64      
Options Exercisable        
Number Exercisable 62,000      
Weighted Average Exercise Price Per Share $ 4.64      
Stock Options | 5.07-5.52        
Options Outstanding        
Range of Exercise Prices, Lower limit 5.07      
Range of Exercise Prices, Upper limit $ 5.52      
Number Outstanding 86,883      
Remaining Contractual Life 5 years 9 months 18 days      
Weighted Average Exercise Price Per Share $ 5.38      
Options Exercisable        
Number Exercisable 66,717      
Weighted Average Exercise Price Per Share $ 5.39      
Stock Options | 5.67-5.67        
Options Outstanding        
Range of Exercise Prices, Lower limit 5.67      
Range of Exercise Prices, Upper limit $ 5.67      
Number Outstanding 113,958      
Remaining Contractual Life 8 years 1 month 17 days      
Weighted Average Exercise Price Per Share $ 5.67      
Options Exercisable        
Number Exercisable 38,626      
Weighted Average Exercise Price Per Share $ 5.67      
Stock Options | 5.75-7.01        
Options Outstanding        
Range of Exercise Prices, Lower limit 5.75      
Range of Exercise Prices, Upper limit $ 7.01      
Number Outstanding 77,000      
Remaining Contractual Life 2 years 2 months 12 days      
Weighted Average Exercise Price Per Share $ 6.70      
Options Exercisable        
Number Exercisable 77,000      
Weighted Average Exercise Price Per Share $ 6.70      
Stock Options | 7.40-9.98        
Options Outstanding        
Range of Exercise Prices, Lower limit 7.40      
Range of Exercise Prices, Upper limit $ 9.98      
Number Outstanding 114,000      
Remaining Contractual Life 4 years 11 months 23 days      
Weighted Average Exercise Price Per Share $ 8.75      
Options Exercisable        
Number Exercisable 84,000      
Weighted Average Exercise Price Per Share $ 9.12      
Stock Options | 9.99-9.99        
Options Outstanding        
Range of Exercise Prices, Lower limit 9.99      
Range of Exercise Prices, Upper limit $ 9.99      
Number Outstanding 6,000      
Remaining Contractual Life 8 years 10 months 13 days      
Weighted Average Exercise Price Per Share $ 9.99      
Options Exercisable        
Number Exercisable 6,000      
Weighted Average Exercise Price Per Share $ 9.99      
Stock Options | 10.22-10.22        
Options Outstanding        
Range of Exercise Prices, Lower limit 10.22      
Range of Exercise Prices, Upper limit $ 10.22      
Number Outstanding 24,000      
Remaining Contractual Life 9 years 5 months 1 day      
Weighted Average Exercise Price Per Share $ 10.22      
Stock Options | 10.71-10.71        
Options Outstanding        
Range of Exercise Prices, Lower limit 10.71      
Range of Exercise Prices, Upper limit $ 10.71      
Number Outstanding 6,000      
Remaining Contractual Life 2 years 6 months 7 days      
Weighted Average Exercise Price Per Share $ 10.71      
Options Exercisable        
Number Exercisable 6,000      
Weighted Average Exercise Price Per Share $ 10.71      
Stock Options | 11.51-11.51        
Options Outstanding        
Range of Exercise Prices, Lower limit 11.51      
Range of Exercise Prices, Upper limit $ 11.51      
Number Outstanding 18,000      
Remaining Contractual Life 8 years 5 months 23 days      
Weighted Average Exercise Price Per Share $ 11.51      
Options Exercisable        
Number Exercisable 18,000      
Weighted Average Exercise Price Per Share $ 11.51      
Stock Options | 15.43-15.43        
Options Outstanding        
Range of Exercise Prices, Lower limit 15.43      
Range of Exercise Prices, Upper limit $ 15.43      
Number Outstanding 81,500      
Remaining Contractual Life 9 years 1 month 17 days      
Weighted Average Exercise Price Per Share $ 15.43      
Stock Options | 2.95-15.43        
Options Outstanding        
Range of Exercise Prices, Lower limit 2.95      
Range of Exercise Prices, Upper limit $ 15.43      
Number Outstanding 589,341      
Remaining Contractual Life 6 years 3 months 18 days      
Weighted Average Exercise Price Per Share $ 8.06      
Options Exercisable        
Number Exercisable 358,343      
Weighted Average Exercise Price Per Share $ 6.92