Note 16 - Employee Benefit Plans (Details) (USD $)	0 Months Ended	12 Months Ended
	Jan. 02, 2005 Year	Dec. 31, 2011 Year positions	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008 Year
Salary deferral percentage, maximum		75.00%
Matching contribution, maximum		100.00%
Maximum participant salary contribution		$ 4,500	$ 4,000
Employee contribution vesting period		3
Total contributions		5,400,000	4,500,000	4,700,000
Deferred Compensation Plan, Number of Participants		123
Deferred compensation plan assets		71,979,000	74,236,000,000
Retirement age at which benefits are available					55
Minimum service years to qualify for benefits					10
Minimum age of retiree	40
Medicare entitlement age					65
Prior cost sharing percent for spouse					50.00%
Current cost sharing percent for spouse					75.00%
Gain on substantive termination of retiree medical plan		0	0	(6,488,000)
Actuarial losses				1,300,000
Other non-current liabilities		8,730,000	7,865,000
Total liabilities		1,288,372,000	1,436,185,000
Parent [Member]
Gain on substantive termination of retiree medical plan				6,488,000,000
Cost of Sales [Member]
Gain on substantive termination of retiree medical plan				(300,000)
Research And Development [Member]
Gain on substantive termination of retiree medical plan				(3,600,000)
Selling, General and Administrative [Member]
Gain on substantive termination of retiree medical plan				(2,600,000)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Accrued compensation and related liabilities		1,904,000	2,527,000
Other non-current liabilities		6,562,000	5,858,000
Total liabilities		$ 8,466,000	$ 8,385,000