Note 7 - Stock-Based Compensation (Details) - Stock Based Compensation Plan Expenses (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 7 - Stock-Based Compensation (Details) - Stock Based Compensation Plan Expenses [Line Items]
Share based compensation expense	$ 14,941	$ 14,679	$ 13,368	$ 15,603	$ 12,487	$ 12,643	$ 12,478	$ 12,123
Total									33,454	20,701	18,465
Cost of Sales [Member]
Note 7 - Stock-Based Compensation (Details) - Stock Based Compensation Plan Expenses [Line Items]
Share based compensation expense									903	631	510
Research and Development Expense [Member]
Note 7 - Stock-Based Compensation (Details) - Stock Based Compensation Plan Expenses [Line Items]
Share based compensation expense									9,019	6,219	6,922
Selling, General and Administrative Expenses [Member]
Note 7 - Stock-Based Compensation (Details) - Stock Based Compensation Plan Expenses [Line Items]
Share based compensation expense									23,532	13,851	11,220
Tax Benefit [Member]
Note 7 - Stock-Based Compensation (Details) - Stock Based Compensation Plan Expenses [Line Items]
Share based compensation expense											$ (187)