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Income Taxes - Additional Information (Details) - USD ($)
 12 Months Ended
Jan. 02, 2016
Jan. 03, 2015
Dec. 28, 2013
Income Tax Disclosure [Abstract]      
Tax benefits related to employees' and directors' stock plans $ 881,000 $ 771,000 $ 351,000
Percent of effective income tax rate reconciliation at the federal statutory income tax rate 35.00%    
Operating Loss Carryforwards [Line Items]      
Deferred tax assets, Valuation allowance $ 11,493,000 13,040,000  
Increase (decrease) of deferred tax asset valuation allowance (1,547,000)    
Undistributed earnings of foreign subsidiaries 168,225,000    
Estimated withholding liability related to undistributed earnings of foreign subsidiaries 3,557,000    
Unrecognized tax benefits that would impact effective tax rate 5,052,000    
Income tax penalties and accrued interest from unrecognized tax benefits 1,246,000 1,137,000  
Income tax penalties and interest (benefit) expense from unrecognized tax benefits 103,000 $ (648,000)  
Upper bound estimated range of change of significant (increase) decrease in unrecognized tax benefits $ 364,000    
Estimate time frame for significant change in unrecognized tax benefits 12 months    
Internal revenue service (IRS)      
Operating Loss Carryforwards [Line Items]      
Deferred tax assets, Valuation allowance $ 966,000    
Foreign tax authority      
Operating Loss Carryforwards [Line Items]      
Deferred tax assets, Valuation allowance 10,527,000    
Operating loss carryforwards 37,543,000    
Operating loss carryforwards expiring in 2017 through 2022 73,000    
State and local jurisdiction      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforwards $ 28,740,000