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Income Taxes (Details Textual) - USD ($)
 12 Months Ended
Dec. 30, 2016
Jan. 01, 2016
Jan. 02, 2015
Income Taxes [Line Items]      
Income Tax Expense (Benefit) $ (315,000) $ 928,000 $ (253,000)
Operating Loss Carryforwards 136,100,000    
Taxes Payable 367,000 380,000  
Operating Loss Carryforwards, Valuation Allowance 125,000 3,020,000 394,000
Deferred Tax Liabilities, Net $ 473,000    
Operating Loss Carryforwards, Limitations on Use The California net operating loss carryforwards expire in varying amounts between 2017 and 2036 and, approximately $9.1 million of those net operating loss carryforwards, will expire over the next two years.    
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries $ 881,000    
Operating Loss Carry Forwards Expiration Term expire in varying amounts between 2020 and 2036.    
Increase Decrease In Foreign Deferred Tax Liabilities $ 617,000 172,000 $ 1,039,000
STAAR Surgical AG [Member]      
Income Taxes [Line Items]      
Deferred Tax Assets, Net 407,000 312,000  
STAAR Japan, Inc. [Member]      
Income Taxes [Line Items]      
Deferred Tax Assets, Net 307,000    
Deferred Tax Liabilities, Net 145,000 145,000  
Defined Benefit Plan Switzerland [Member]      
Income Taxes [Line Items]      
Deferred Tax Liabilities, Net   1,686,000  
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries   1,627,000  
Japan [Member]      
Income Taxes [Line Items]      
Deferred Tax Assets, Net 584,000 $ 698,000  
California [Member]      
Income Taxes [Line Items]      
Operating Loss Carryforwards $ 32,100,000