Note 16 - Restructuring and Asset Impairment Charges - Restructuring Activities (Details) - USD ($) $ in Thousands		3 Months Ended
	Dec. 29, 2018	Mar. 31, 2019	Dec. 30, 2018
Restructuring Charge			$ 20,500
Employee Severance [Member]
Restructuring Charge	$ 10,816
Costs Incurred		$ 1,813	53
Restructuring reserve		8,950
Asset Impairment [Member]
Restructuring Charge	8,569
Costs Incurred		0	8,569
Restructuring reserve		0
Other Restructuring [Member]
Restructuring Charge	$ 1,144
Costs Incurred		18	$ 0
Restructuring reserve		$ 1,126