v3.26.1
Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Accumulated Other Comprehensive Income (Loss)
Retained Earnings
Treasury Stock
Common stock shares, beginning balance (in shares) at Sep. 30, 2024   59,031,953        
Beginning balance at Sep. 30, 2024 $ 1,767,847 $ 590 $ 505,958 $ (13,464) $ 1,475,719 $ (200,956)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Shares issued under restricted stock and purchase plans, net of shares withheld for employee taxes (in shares)   205,934        
Shares issued under restricted stock and purchase plans, net of shares withheld for employee taxes 1,553 $ 3 1,550      
Stock-based compensation 13,453   13,453      
Net loss (58,653)       (58,653)  
Net investment hedge currency translation adjustment, net of tax (5,088)     (5,088)    
Foreign currency translation adjustments (23,923)     (23,923)    
Changes in unrealized losses on marketable securities, net of tax 363     363    
Actuarial loss on pension plans, net of tax (100)     (100)    
Ending balance at Mar. 31, 2025 1,695,452 $ 593 520,961 (42,212) 1,417,066 (200,956)
Common stock shares, ending balance (in shares) at Mar. 31, 2025   59,237,887        
Common stock shares, beginning balance (in shares) at Dec. 31, 2024   59,153,757        
Beginning balance at Dec. 31, 2024 1,720,169 $ 592 511,068 (55,262) 1,464,727 (200,956)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Shares issued under restricted stock and purchase plans, net of shares withheld for employee taxes (in shares)   84,130        
Shares issued under restricted stock and purchase plans, net of shares withheld for employee taxes 1,553 $ 1 1,552      
Stock-based compensation 8,341   8,341      
Net loss (47,661)       (47,661)  
Net investment hedge currency translation adjustment, net of tax (10,500)     (10,500)    
Foreign currency translation adjustments 23,400     23,400    
Changes in unrealized losses on marketable securities, net of tax 200     200    
Actuarial loss on pension plans, net of tax (50)     (50)    
Ending balance at Mar. 31, 2025 $ 1,695,452 $ 593 520,961 (42,212) 1,417,066 (200,956)
Common stock shares, ending balance (in shares) at Mar. 31, 2025   59,237,887        
Common stock shares, beginning balance (in shares) at Sep. 30, 2025 59,320,848 59,320,848        
Beginning balance at Sep. 30, 2025 $ 1,726,986 $ 594 529,605 (22,213) 1,419,956 (200,956)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Shares issued under restricted stock and purchase plans, net of shares withheld for employee taxes (in shares)   232,445        
Shares issued under restricted stock and purchase plans, net of shares withheld for employee taxes (1,241) $ 2 (1,243)      
Stock-based compensation 10,420   10,420      
Net loss (176,230)       (176,230)  
Net investment hedge currency translation adjustment, net of tax 3,805     3,805    
Foreign currency translation adjustments (8,135)     (8,135)    
Changes in unrealized losses on marketable securities, net of tax (823)     (823)    
Actuarial loss on pension plans, net of tax (105)     (105)    
Ending balance at Mar. 31, 2026 $ 1,554,677 $ 596 538,782 (27,471) 1,243,726 (200,956)
Common stock shares, ending balance (in shares) at Mar. 31, 2026 59,553,293 59,553,293        
Common stock shares, beginning balance (in shares) at Dec. 31, 2025   59,479,828        
Beginning balance at Dec. 31, 2025 $ 1,714,832 $ 595 531,245 (20,576) 1,404,524 (200,956)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Shares issued under restricted stock and purchase plans, net of shares withheld for employee taxes (in shares)   73,465        
Shares issued under restricted stock and purchase plans, net of shares withheld for employee taxes 1,176 $ 1 1,175      
Stock-based compensation 6,362   6,362      
Net loss (160,798)       (160,798)  
Net investment hedge currency translation adjustment, net of tax 3,689     3,689    
Foreign currency translation adjustments (9,721)     (9,721)    
Changes in unrealized losses on marketable securities, net of tax (810)     (810)    
Actuarial loss on pension plans, net of tax (53)     (53)    
Ending balance at Mar. 31, 2026 $ 1,554,677 $ 596 $ 538,782 $ (27,471) $ 1,243,726 $ (200,956)
Common stock shares, ending balance (in shares) at Mar. 31, 2026 59,553,293 59,553,293