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Condensed Consolidated Statements of Income (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Income Statement [Abstract]        
Revenue $ 87,350 $ 83,217 $ 170,755 $ 200,524
Operating expenses:        
Research and development 14,799 13,116 28,724 26,127
Selling, general and administrative 24,617 26,394 48,646 49,256
Amortization expense 20,030 23,650 43,187 47,339
Litigation expense 4,262 2,334 7,192 4,956
Total operating expenses 63,708 65,494 127,749 127,678
Operating income 23,642 17,723 43,006 72,846
Interest expense (13,296) (15,540) (27,471) (31,478)
Other income and expense, net 1,428 1,617 2,828 3,237
Loss on debt extinguishment (453) 0 (453) 0
Income before income taxes 11,321 3,800 17,910 44,605
Provision for income taxes 2,939 2,381 8,629 14,165
Net income $ 8,382 $ 1,419 $ 9,281 $ 30,440
Net income per share:        
Basic $ 0.08 $ 0.01 $ 0.09 $ 0.29
Diluted $ 0.07 $ 0.01 $ 0.08 $ 0.27
Weighted average number of shares used in per share calculations        
Basic 108,667 106,464 108,216 106,027
Diluted 112,536 112,775 112,757 113,105