Note 7 - Stock-Based Compensation (Details) - Stock Based Compensation Plan Expenses - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Note 7 - Stock-Based Compensation (Details) - Stock Based Compensation Plan Expenses [Line Items]
Share based compensation expense	$ 41,563	$ 33,454	$ 20,701
Cost of Sales [Member]
Note 7 - Stock-Based Compensation (Details) - Stock Based Compensation Plan Expenses [Line Items]
Share based compensation expense	1,166	903	631
Research and Development Expense [Member]
Note 7 - Stock-Based Compensation (Details) - Stock Based Compensation Plan Expenses [Line Items]
Share based compensation expense	11,156	9,019	6,219
Selling, General and Administrative Expenses [Member]
Note 7 - Stock-Based Compensation (Details) - Stock Based Compensation Plan Expenses [Line Items]
Share based compensation expense	$ 29,241	$ 23,532	$ 13,851