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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Loss [Member]
Beginning Balance at Dec. 31, 2022 $ 1,438,394 $ 345 $ 979,167 $ 528,179 $ (69,297)
Beginning Balance, shares (in shares) at Dec. 31, 2022   172,631      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net issuance of common stock under stock plans (in shares)   691      
Net issuance of common stock under stock plans 3,268 $ 1 3,267    
Repurchase of common stock (79,794) $ (3)   (79,791)  
Repurchase of common stock (in shares)   (1,723)      
Stock-based compensation expense 54,768   54,768    
Payment of dividends ($0.325 per common share) (49,079)     (49,079)  
Net income 113,234     113,234  
Net unrealized gain (loss), net of tax of $1,885, $1,245, and $4,389 in 2025, 2024, and 2023, respectively 10,507       10,507
Net unrealized gain (loss) on available-for-sale investments, net of tax 10,507        
Reclassification of net realized (gain) loss on the sale of available-for-sale investments 1,954       1,954
Foreign currency translation adjustment 11,500       11,500
Balance at Dec. 31, 2023 1,504,752 $ 343 1,037,202 512,543 (45,336)
Balance, shares (in shares) at Dec. 31, 2023   171,599      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net issuance of common stock under stock plans (in shares)   546      
Net issuance of common stock under stock plans 994 $ 1 993    
Repurchase of common stock (67,085) $ (3)   (67,082)  
Repurchase of common stock (in shares)   (1,711)      
Stock-based compensation expense 52,443   52,443    
Payment of dividends ($0.325 per common share) (52,329)     (52,329)  
Net income 106,171     106,171  
Net unrealized gain (loss), net of tax of $1,885, $1,245, and $4,389 in 2025, 2024, and 2023, respectively 3,809       3,809
Net unrealized gain (loss) on available-for-sale investments, net of tax 3,809        
Reclassification of net realized (gain) loss on the sale of available-for-sale investments 8       8
Foreign currency translation adjustment (31,258)       (31,258)
Balance at Dec. 31, 2024 $ 1,517,505 $ 341 1,090,638 499,303 (72,777)
Balance, shares (in shares) at Dec. 31, 2024 170,434 170,434      
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net issuance of common stock under stock plans (in shares) 265 797      
Net issuance of common stock under stock plans $ (445) $ 2 (447)    
Excise tax on repurchase of common stock (1,539)     (1,539)  
Repurchase of common stock (151,233) $ (9)   (151,224)  
Repurchase of common stock (in shares)   (4,234)      
Stock-based compensation expense 48,517   48,517    
Payment of dividends ($0.325 per common share) (54,627)     (54,627)  
Net income 114,442     114,442  
Net unrealized gain (loss), net of tax of $1,885, $1,245, and $4,389 in 2025, 2024, and 2023, respectively 5,961       5,961
Net unrealized gain (loss) on available-for-sale investments, net of tax 5,961        
Reclassification of net realized (gain) loss on the sale of available-for-sale investments (156)       (156)
Foreign currency translation adjustment 13,476       13,476
Balance at Dec. 31, 2025 $ 1,491,901 $ 334 $ 1,138,708 $ 406,355 $ (53,496)
Balance, shares (in shares) at Dec. 31, 2025 166,997 166,997