Note 6 - Balance Sheet Components - Other Long-term Assets (Details) - USD ($) $ in Thousands		Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024
Deferred compensation plan assets		$ 107,096				$ 92,586
Prepaid wafer purchases	[1]	0				60,000
Other		57,995				41,791
Total		$ 165,091	$ 161,055	$ 144,279	$ 135,974	$ 194,377

[1] Prepaid wafer purchases relate to a deposit made to a supplier under a long-term wafer supply agreement.