Note 7 - Restructuring (Details Textual) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 02, 2021	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Jan. 02, 2021	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018	Jun. 30, 2017
Restructuring and Related Costs, Incurred Cost, Total	$ (241)	$ 2,692	$ 546	$ 940	$ (55)	$ 252	$ 3,126	$ 1,341
Restructuring Charges, Total									$ 3,937	$ 3,937	$ 4,664	$ 17,349
Q1 2020 Plan [Member]
Restructuring and Related Costs, Incurred Cost, Total										2,000
Q2 2019 Sales Plan [Member]
Restructuring and Related Costs, Incurred Cost, Total										100	2,000
Restructuring and Related Cost, Cost Incurred to Date	2,100								2,100	2,100
December 2018 Plan [Member]
Restructuring and Related Costs, Incurred Cost, Total										0	0	4,800
Restructuring and Related Cost, Cost Incurred to Date	4,800								4,800	4,800
June 2018 Plan [Member]
Restructuring and Related Costs, Incurred Cost, Total										0	100	4,200
Restructuring and Related Cost, Cost Incurred to Date	4,100								4,100	4,100
June 2017 Plan [Member]
Restructuring and Related Costs, Incurred Cost, Total										21,000
June 2017 Plan [Member] | Minimum [Member]
Restructuring and Related Cost, Expected Cost, Total	21,500								21,500	21,500
June 2017 Plan [Member] | Maximum [Member]
Restructuring and Related Cost, Expected Cost, Total	$ 23,500								$ 23,500	23,500
June 2017 Plan [Member] | Facility Closing [Member]
Restructuring and Related Costs, Incurred Cost, Total												$ 8,400
Restructuring Charges, Total										$ 1,900	$ 2,700
June 2017 Plan [Member] | Hyderabad [Member]
Noncontrolling Interest, Ownership Percentage by Parent													100.00%