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Income Taxes (Details Textual) - USD ($)
 12 Months Ended
Dec. 28, 2018
Dec. 29, 2017
Dec. 30, 2016
Jan. 01, 2016
Income Taxes [Line Items]        
Income Tax Expense (Benefit)   $ (157,000) $ (315,000) $ 928,000
Operating Loss Carryforwards   132,506,000    
Taxes Payable   29,000 409,000  
Operating Loss Carryforwards, Valuation Allowance   646,000 125,000 3,020,000
Deferred Tax Assets, Net   $ 892,000 224,000  
Operating Loss Carryforwards, Limitations on Use   The California net operating loss carryforwards expire in varying amounts between 2028 and 2037.    
Operating Loss Carry Forwards Expiration Term   expire in varying amounts between 2020 and 2037.    
Increase (Decrease) In Foreign Deferred Tax Liabilities   $ 47,000 617,000 (172,000)
Deferred Federal, State and Local, Tax Expense (Benefit)   546,000    
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount   $ (2,482,000) $ (809,000) $ 547,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent   34.00% 34.00% 34.00%
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax   $ 546,000    
Scenario, Plan [Member]        
Income Taxes [Line Items]        
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00%      
STAAR Surgical AG [Member]        
Income Taxes [Line Items]        
Deferred Tax Assets, Net   505,000 $ 407,000  
Japan [Member]        
Income Taxes [Line Items]        
Deferred Tax Assets, Net   722,000 698,000  
California [Member]        
Income Taxes [Line Items]        
Operating Loss Carryforwards   23,807,000    
UNITED STATES        
Income Taxes [Line Items]        
Deferred Tax Assets, Net   19,125,000    
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount   5,658,000    
Swiss [Member]        
Income Taxes [Line Items]        
Deferred Tax Liabilities, Net   377,000 473,000  
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries   $ 881,000 $ 881,000