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Nature of Operations and Summary of Significant Accounting Policies (Tables)
6 Months Ended
Mar. 31, 2023
Accounting Policies [Abstract]  
Schedule of Potentially Dilutive Common Shares Excluded from Calculation of Net Income per Share For the three and six months ended March 31, 2023 and 2022, the following potentially dilutive common shares were excluded from the calculation of net income per share, as they would have been antidilutive (amounts in thousands):
 Three Months Ended March 31,Six Months Ended March 31,
 2023202220232022
Stock options453 467 457 452 
RSUs1,077 914 1,015 1,241 
ESPP common stock equivalents213 34 95 15 
Performance options794 532 766 509 
Performance RSUs483 238 483 224 
Convertible senior notes7,448 7,448 7,448 7,448 
Warrants7,448 7,448 7,448 7,448 
Total potentially dilutive common shares outstanding17,916 17,081 17,712 17,337 
Schedule of Calculation of Basic and Diluted Net Income Per Share The calculation of basic and diluted net income per share is as follows (amounts in thousands, except per share data):
 Three Months Ended March 31,Six Months Ended March 31,
 2023
2022
As Restated
2023
2022
As Restated
Net income$5,169 $435 $9,899 $3,559 
Weighted-average shares outstanding—basic45,377 44,775 45,317 44,795 
Common stock equivalents403 1,322 615 1,411 
Weighted-average shares outstanding—diluted45,780 46,097 45,932 46,206 
Net income per share:
Basic$0.11 $0.01 $0.22 $0.08 
Diluted$0.11 $0.01 $0.22 $0.08