Note 14 - Income Taxes Deferred Tax Assets (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Deferred Tax Asset [Line Items]
Deferred income on sales to distributors	$ 13,710,000	$ 19,576,000
Acquisition costs	2,894,000	6,271,000
Deferred compensation	24,523,000	23,805,000
Stock compensation	18,506,000	22,999,000
Other accrued expenses and reserves	32,501,000	38,109,000
Tax credits	13,640,000	2,438,000
Gross deferred tax assets	105,774,000	113,198,000
Valuation allowance	(10,898,000)	(2,700,000)
Deferred tax assets,net of valuation allowance	94,876,000	110,498,000
Depreciation and amortization	(9,832,000)	(6,340,000)
Net deferred tax assets	$ 85,044,000	$ 104,158,000