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Condensed Consolidated Statements of Stockholders’ Equity (unaudited) - USD ($)
$ in Thousands
Total
Common stock
Additional paid-in capital
Accumulated Other comprehensive income (loss)
Accumulated deficit
Beginning balance (in shares) at Sep. 30, 2021   49,499,000      
Beginning balance at Sep. 30, 2021 $ 580,821 $ 0 $ 1,190,828 $ 546 $ (610,553)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common stock in public offering, net of underwriting discounts and commissions and offering expenses (in shares)   5,227,000      
Issuance of common stock in public offering, net of underwriting discounts and commissions and offering expenses 269,818   269,818    
Vesting of restricted stock units (in shares)   163,000      
Exercise of stock options (in shares)   368,000      
Exercise of stock options 3,934   3,934    
Issuance of shares under the employee stock purchase plan (in shares)   50,000      
Issuance of shares under the employee stock purchase plan 2,395   2,395    
Repurchases of common stock for income tax withholding (in shares)   (62,000)      
Repurchases of common stock for income tax withholding (4,050)   (4,050)    
Issuance of shares from business acquisition (in shares)   989,000      
Issuance of shares from business acquisition 77,122   77,122    
Stock-based compensation 40,573   40,573    
Other comprehensive income (loss) (1,021)     (1,021)  
Net loss (106,231)       (106,231)
Ending balance (in shares) at Mar. 31, 2022   56,234,000      
Ending balance at Mar. 31, 2022 863,361 $ 0 1,580,620 (475) (716,784)
Beginning balance (in shares) at Dec. 31, 2021   50,735,000      
Beginning balance at Dec. 31, 2021 626,178 $ 0 1,281,931 363 (656,116)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Issuance of common stock in public offering, net of underwriting discounts and commissions and offering expenses (in shares)   5,227,000      
Issuance of common stock in public offering, net of underwriting discounts and commissions and offering expenses 269,818   269,818    
Vesting of restricted stock units (in shares)   100,000      
Exercise of stock options (in shares)   100,000      
Exercise of stock options 896   896    
Issuance of shares under the employee stock purchase plan (in shares)   50,000      
Issuance of shares under the employee stock purchase plan 2,395   2,395    
Repurchases of common stock for income tax withholding (in shares)   (38,000)      
Repurchases of common stock for income tax withholding (1,493)   (1,493)    
Issuance of shares from business acquisition (in shares)   60,000      
Issuance of shares from business acquisition 4,608   4,608    
Stock-based compensation 22,465   22,465    
Other comprehensive income (loss) (838)     (838)  
Net loss (60,668)       (60,668)
Ending balance (in shares) at Mar. 31, 2022   56,234,000      
Ending balance at Mar. 31, 2022 $ 863,361 $ 0 1,580,620 (475) (716,784)
Beginning balance (in shares) at Sep. 30, 2022 56,523,000 56,523,000      
Beginning balance at Sep. 30, 2022 $ 789,385 $ 0 1,619,644 (1,843) (828,416)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Vesting of restricted stock units (in shares)   322,000      
Exercise of stock options (in shares) 58,000 58,000      
Exercise of stock options $ 853   853    
Issuance of shares under the employee stock purchase plan (in shares)   132,000      
Issuance of shares under the employee stock purchase plan 2,537   2,537    
Repurchases of common stock for income tax withholding (in shares)   (102,000)      
Repurchases of common stock for income tax withholding (2,261)   (2,261)    
Issuance of shares from business acquisition (in shares)   172,000      
Issuance of shares from business acquisition 4,092   4,092    
Stock-based compensation 8,352   8,352    
Other comprehensive income (loss) 1,954     1,954  
Net loss $ (100,980)       (100,980)
Ending balance (in shares) at Mar. 31, 2023 57,105,000 57,105,000      
Ending balance at Mar. 31, 2023 $ 703,932 $ 0 1,633,217 111 (929,396)
Beginning balance (in shares) at Dec. 31, 2022   56,645,000      
Beginning balance at Dec. 31, 2022 746,325 $ 0 1,617,174 (609) (870,240)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Vesting of restricted stock units (in shares)   198,000      
Exercise of stock options (in shares)   22,000      
Exercise of stock options 250   250    
Issuance of shares under the employee stock purchase plan (in shares)   132,000      
Issuance of shares under the employee stock purchase plan 2,537   2,537    
Repurchases of common stock for income tax withholding (in shares)   (64,000)      
Repurchases of common stock for income tax withholding (1,262)   (1,262)    
Issuance of shares from business acquisition (in shares)   172,000      
Issuance of shares from business acquisition 4,092   4,092    
Stock-based compensation 10,426   10,426    
Other comprehensive income (loss) 720     720  
Net loss $ (59,156)       (59,156)
Ending balance (in shares) at Mar. 31, 2023 57,105,000 57,105,000      
Ending balance at Mar. 31, 2023 $ 703,932 $ 0 $ 1,633,217 $ 111 $ (929,396)