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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Current assets:    
Cash and cash equivalents $ 840,270 $ 527,360
Short-term investments 422,868 430,848
Accounts receivable 160,641 188,302
Prepaid and other current assets 56,927 84,312
Total current assets 1,480,706 1,230,822
Property and equipment, net 25,138 18,544
Patents, net 313,981 308,630
Deferred tax assets 154,729 128,133
Other non-current assets, net 164,946 149,400
Total assets 2,139,500 1,835,529
Current liabilities:    
Current portion of long-term debt 456,258 456,329
Accounts payable 9,115 12,206
Accrued compensation and related expenses 37,602 42,575
Deferred revenue 234,510 178,009
Dividends payable 18,041 11,557
Other accrued expenses 29,584 25,134
Total current liabilities 785,110 725,810
Long-term debt 17,142 15,443
Long-term deferred revenue 177,403 182,119
Other long-term liabilities 59,869 54,942
Total liabilities 1,039,524 978,314
Commitments and contingencies
Shareholders' equity:    
Preferred Stock, $0.10 par value, 14,399 shares authorized, 0 shares issued and outstanding 0 0
Common Stock, $0.01 par value, 100,000 shares authorized, 70,963 and 70,577 shares issued and 25,783 and 25,682 shares outstanding 709 705
Additional paid-in capital 804,328 808,540
Retained earnings 2,088,823 1,775,823
Accumulated other comprehensive gain (loss) 220 (458)
Treasury stock, 45,180 and 44,895 shares of common stock held at cost (1,794,104) (1,727,395)
Total shareholders' equity 1,099,976 857,215
Total liabilities and shareholders' equity $ 2,139,500 $ 1,835,529