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Employee Benefit Plans - Changes in Plans and AOCI Impacts (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 02, 2016
Jan. 03, 2015
Dec. 28, 2013
Pension benefits      
Change in Benefit Obligation:      
Benefit obligation at beginning of year $ 32,213 $ 27,791  
Service cost 842 733  
Interest cost 1,229 1,286 $ 1,167
Actuarial (gain) loss (1,448) 4,390  
Benefits paid (1,526) (1,987)  
Plan amendments 0 0  
Effect of currency translation 0 0  
Benefit obligation at end of year 31,310 32,213 27,791
Change in Plan Assets:      
Fair value of plan assets at beginning of year 28,986 26,056  
Actual return on plan assets (764) 3,837  
Employer contributions 1,080 1,080  
Benefits paid (1,526) (1,987)  
Fair value of plan assets at end of year 27,776 28,986 26,056
Unfunded status (3,534) (3,227)  
Accumulated benefit obligation as of year-end 26,844 27,738  
Current liability 0 0  
Non-current liability (3,534) (3,227)  
Unrecognized net actuarial loss (8,094) (7,865)  
Unrecognized prior service cost (108) (163)  
Total (8,202) (8,028)  
Current year unrecognized net actuarial (loss) gain (737) (1,916)  
Amortization of unrecognized prior service cost 55 55  
Amortization of unrecognized net actuarial loss 508 315  
Effect of currency translation 0 0  
Total (174) (1,546)  
Other Benefits      
Change in Benefit Obligation:      
Benefit obligation at beginning of year 6,139 5,583  
Service cost 187 261  
Interest cost 175 225 207
Actuarial (gain) loss (356) 701  
Benefits paid (408) (390)  
Plan amendments 0 51  
Effect of currency translation (245) (292)  
Benefit obligation at end of year 5,492 6,139 5,583
Change in Plan Assets:      
Fair value of plan assets at beginning of year 0 0  
Actual return on plan assets 0 0  
Employer contributions 408 390  
Benefits paid (408) (390)  
Fair value of plan assets at end of year 0 0 $ 0
Unfunded status (5,492) (6,139)  
Accumulated benefit obligation as of year-end 2,839 1,894  
Current liability (320) (394)  
Non-current liability (4,757) (5,745)  
Unrecognized net actuarial loss (793) (1,272)  
Unrecognized prior service cost (656) (751)  
Total (1,449) (2,023)  
Current year unrecognized net actuarial (loss) gain 356 (701)  
Amortization of unrecognized prior service cost 90 91  
Amortization of unrecognized net actuarial loss 56 34  
Effect of currency translation 72 14  
Total $ 574 $ (562)