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Employee Benefit Plans (Details Textual) - USD ($)
 12 Months Ended
Dec. 30, 2016
Jan. 01, 2016
Jan. 02, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Pension and Other Postretirement Defined Benefit Plans, Liabilities $ 1,240,000 $ 1,035,000  
Assumed Pension Benefits Maturity 10 to 20 years    
Description Related To Benefit Based Under Point System Each point earned is worth a fixed monetary value, 1,000 Yen per point, regardless of the level grade or zone of the employee. Gross benefits are calculated based on the cumulative number of points earned over the service period multiplied by 1,000 Yen. The mandatory retirement age limit is 60 years old.    
Defined Benefit Plan Net Periodic Benefit On Partial Settlement $ 7,300    
Defined Contribution Plan Employees Eligible Payroll 18,000    
Defined Benefit Plan, Contributions by Employer 703,000 625,000 $ 518,000
Defined Benefit Plan, Fair Value of Plan Assets 3,600,000 3,500,000  
Other Long-term Debt, Total 2,800,000 2,900,000  
Fifty Years Old [Member]      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Defined Contribution Plan Employees Eligible Payroll 6,000    
Swiss Plan [Member]      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax $ (1,155,000) (1,522,000)  
Assumed Pension Benefits Maturity 10 to 15 years    
Future Estimated Cash Contribution To Swiz Plan $ 238,000    
Defined Benefit Plan, Contributions by Employer 230,000 209,000  
Defined Benefit Plan, Fair Value of Plan Assets 3,606,000 $ 3,498,000 2,705,000
Swiss Plan [Member] | Pension Costs [Member]      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax $ 73,000    
Japan Plan [Member]      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate 0.30% 0.50%  
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax $ 88,000 $ 101,000  
Defined Benefit Plan, Contributions by Employer 0 0  
Defined Benefit Plan, Fair Value of Plan Assets $ 0 $ 0 $ 0