Note 2 - Stock-Based Compensation (Details) - Stock Based Compensation Plan Expenses - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Note 2 - Stock-Based Compensation (Details) - Stock Based Compensation Plan Expenses [Line Items]
Total	$ 9,497	$ 8,415	$ 18,716	$ 16,013
Cost of Sales [Member]
Note 2 - Stock-Based Compensation (Details) - Stock Based Compensation Plan Expenses [Line Items]
Share based compensation expense	284	219	526	424
Research and Development Expense [Member]
Note 2 - Stock-Based Compensation (Details) - Stock Based Compensation Plan Expenses [Line Items]
Share based compensation expense	2,503	2,245	5,123	4,250
Selling, General and Administrative Expenses [Member]
Note 2 - Stock-Based Compensation (Details) - Stock Based Compensation Plan Expenses [Line Items]
Share based compensation expense	$ 6,710	$ 5,951	$ 13,067	$ 11,339