Note 12 - Restructuring Charges (Details) - Restructuring Plan One Activities - USD ($) $ in Thousands	3 Months Ended	12 Months Ended		24 Months Ended
	Sep. 28, 2014	Jan. 03, 2016	Dec. 28, 2014	Jan. 03, 2016
Restructuring Charge 2014 [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charge	$ 12,400
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Balance		$ 104		$ 104
Employee Severance [Member] | Restructuring Charge 2014 [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charge	9,700			9,669
Costs incurred		6,833	$ 2,732
Fixed Asset Impairment [Member]
Restructuring Cost and Reserve [Line Items]
Balance		0		0
Fixed Asset Impairment [Member] | Restructuring Charge 2014 [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charge	2,600			2,584
Costs incurred		0	2,584
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Balance		0		0
Other Restructuring [Member] | Restructuring Charge 2014 [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charge	$ 100			$ 133
Costs incurred		$ 0	$ 133