Note 2 - Stock-Based Compensation (Details) - RSU Summary - 6 months ended Jun. 30, 2015 - $ / shares shares in Thousands		Total
Note 2 - Stock-Based Compensation (Details) - RSU Summary [Line Items]
Shares		4,048
Weighted-Average Grant Date Fair Value Per Share		$ 26.14
Granted (1)	[1]	911
Granted (1)	[1]	$ 48.83
Performance adjustment (2)	[2]	(130)
Performance adjustment (2)	[2]	$ 43.45
Released		(680)
Released		$ 23.99
Forfeited		(63)
Forfeited		$ 32.32
Shares		4,086
Weighted-Average Grant Date Fair Value Per Share		$ 30.92
Time-Based RSUs [Member]
Note 2 - Stock-Based Compensation (Details) - RSU Summary [Line Items]
Shares		589
Weighted-Average Grant Date Fair Value Per Share		$ 28.48
Granted (1)	[1]	252
Granted (1)	[1]	$ 49.63
Performance adjustment (2)	[2]
Performance adjustment (2)	[2]
Released		(199)
Released		$ 24.52
Forfeited		(38)
Forfeited		$ 34.91
Shares		604
Weighted-Average Grant Date Fair Value Per Share		$ 38.24
PSUs [Member]
Note 2 - Stock-Based Compensation (Details) - RSU Summary [Line Items]
Shares		1,659
Weighted-Average Grant Date Fair Value Per Share		$ 28.11
Granted (1)	[1]	659
Granted (1)	[1]	$ 48.53
Performance adjustment (2)	[2]	(130)
Performance adjustment (2)	[2]	$ 43.45
Released		(481)
Released		$ 23.77
Forfeited		(25)
Forfeited		$ 28.27
Shares		1,682
Weighted-Average Grant Date Fair Value Per Share		$ 36.17
MSUs [Member]
Note 2 - Stock-Based Compensation (Details) - RSU Summary [Line Items]
Shares		1,800
Weighted-Average Grant Date Fair Value Per Share		$ 23.57
Granted (1)	[1]
Granted (1)	[1]
Performance adjustment (2)	[2]
Performance adjustment (2)	[2]
Shares		1,800
Weighted-Average Grant Date Fair Value Per Share		$ 23.57

[1] Amount for PSUs reflects the maximum number of shares that can be earned assuming the achievement of the highest level of performance conditions.

[2] Amount for PSUs reflects the number of shares that have not been earned or may not be earned based on management's probability assessment.