Note 3 - Stock-based Compensation - Stock-based Compensation Plan Expenses (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Share based compensation expense		$ 42,915	$ 32,126	$ 82,726	$ 60,710
Tax benefit related to stock-based compensation	[1]	652	381	1,225	811
Cost of Sales [Member]
Share based compensation expense		1,198	885	2,505	1,700
Research and Development Expense [Member]
Share based compensation expense		9,187	6,752	17,588	12,918
Selling, General and Administrative Expenses [Member]
Share based compensation expense		$ 32,530	$ 24,489	$ 62,633	$ 46,092

[1] Amount reflects the tax benefit related to stock-based compensation recorded for equity awards that are expected to generate tax deductions when they vest in future periods. Equity awards granted to the Company’s executive officers are subject to the tax deduction limitations set by Section 162(m) of the Internal Revenue Code.