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Liabilities (Details Textual)
12 Months Ended
Jan. 01, 2016
USD ($)
Jan. 01, 2016
JPY (¥)
Jan. 01, 2016
CHF (SFr)
May. 01, 2015
EUR (€)
Jan. 02, 2015
USD ($)
Jan. 02, 2015
JPY (¥)
Dec. 28, 2012
JPY (¥)
Line of Credit Facility, Maximum Borrowing Capacity $ 217,000     € 200,000     ¥ 500,000,000
Line of Credit Facility, Interest Rate Description approximately 1.475% as of January 1, 2016) and may be renewed annually (the current line expires on September 30, 2016).            
Line Of Credit, Current $ 4,159,000 ¥ 500,000,000     $ 4,150,000 ¥ 500,000,000  
Line of Credit Facility, Current Borrowing Capacity $ 1,000,000   SFr 1,000,000        
Interest Rate Increase In Case Of Default 14.00%            
Percentage Of Commission On Outstanding Notes Payable 0.25%            
Working Capital Requirements $ 783,000   SFr 783,000        
Foreign Exchange [Member]              
Line Of Credit, Current $ 4,200,000       $ 4,200,000