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Note 15 - Employee Benefit Plans (Details) - Assumptions Used to Determine Net Periodic Benefit Cost
12 Months Ended
Jan. 03, 2016
Dec. 28, 2014
Dec. 29, 2013
Weighted average assumptions used to determine net periodic benefit cost      
Discount rate 3.00% 4.00% 4.00%
Expected return on plan assets 4.00% 4.20% 4.70%
Rate of compensation 2.00% 2.00% 2.00%
Weighted average assumptions used to determine benefit obligations      
Discount rate 3.40% 3.20% 4.25%
Rate of compensation 2.00% 2.00% 2.00%