CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
REVENUE:
Total revenue	$ 171,794	$ 158,505	$ 338,071	$ 323,764
COST OF SALES	39,203	38,328	77,337	75,297
Gross margin	132,591	120,177	260,734	248,467
OPERATING EXPENSES:
Research and development	36,358	36,826	71,258	74,811
Selling, general and administrative	20,440	19,841	37,454	39,093
Amortization of acquired technology and other intangible assets	4,548	4,549	9,093	9,097
Patent costs	2,588	2,401	4,494	4,383
Royalty and license expense	117	123	231	1,774
Total operating expenses	64,051	63,740	122,530	129,158
OPERATING INCOME	68,540	56,437	138,204	119,309
Interest income, net	9,763	9,913	19,837	19,481
Other income (loss), net	5,575	(1,460)	5,953	(3,403)
Interest and other income (loss), net	15,338	8,453	25,790	16,078
INCOME BEFORE INCOME TAXES	83,878	64,890	163,994	135,387
INCOME TAX EXPENSE	(16,614)	(12,553)	(32,286)	(26,197)
NET INCOME	$ 67,264	$ 52,337	$ 131,708	$ 109,190
NET INCOME PER COMMON SHARE:
BASIC	$ 1.41	$ 1.1	$ 2.77	$ 2.29
DILUTED	$ 1.41	$ 1.1	$ 2.76	$ 2.29
WEIGHTED AVERAGE SHARES USED IN COMPUTING NET INCOME PER COMMON SHARE:
BASIC	47,593,660	47,549,843	47,580,549	47,553,969
DILUTED	47,674,886	47,628,113	47,684,351	47,628,470
CASH DIVIDENDS DECLARED PER COMMON SHARE	$ 0.45	$ 0.4	$ 0.9	$ 0.8
Material Sales
REVENUE:
Total revenue	$ 88,650	$ 95,442	$ 174,805	$ 188,726
Royalty And License Fees
REVENUE:
Total revenue	75,667	59,551	149,236	127,819
Contract Research Services
REVENUE:
Total revenue	$ 7,477	$ 3,512	$ 14,030	$ 7,219