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Industry Segment, Geographic Information and Significant Customers (Tables)	12 Months Ended
	Jan. 02, 2016
Segment Reporting [Abstract]
Concentration Risk Disclosure [Text Block]	Concentration of Credit Risk and Significant Customers Financial instruments which potentially expose the Company to concentrations of credit risk consist of accounts receivable. Management believes its credit policies are prudent and reflect normal industry terms and business risk. At January 2, 2016, three customers accounted for a total of 45.8% of the Company's accounts receivable balance, each of which was greater than 10% of the balance and two of whom secured their balance with guaranteed letters of credit which together represents 34.1% of the balance. At December 27, 2014, two customers accounted for a total of 32.2% of the Company’s accounts receivable balance, each of which was greater than 10% of the balance and each of whom secured their balance with guaranteed letters of credit. For the years ended January 2, 2016, December 27, 2014 and December 28, 2013, revenue from U.S. federal government orders, contracts and subcontracts, represented 5.1%, 4.3% and 6.2% of total revenue, respectively. For the fiscal years ended January 2, 2016, December 27, 2014 and December 28, 2013, the Company generated an aggregate of 26.0%, 29.8% and 33.2%, respectively, of total revenue from its home robots distributor in Japan (Sales on Demand Corporation) and a network of affiliated European distributors of its home robots (Robopolis SAS). The Company maintains its cash in bank deposit accounts at high quality financial institutions. The individual balances, at times, may exceed federally insured limits. Geographic Information For the fiscal years ended January 2, 2016, December 27, 2014 and December 28, 2013, sales to non-U.S. customers accounted for 56.0%, 60.9% and 59.5% of total revenue, respectively. For the fiscal years ended January 2, 2016, December 27, 2014 and December 28, 2013, sales to our home robots distributor in Japan accounted for 13.3%, 17.0%, and 19.8% of total revenue, respectively. Significant Customers For the fiscal years ended January 2, 2016, December 27, 2014 and December 28, 2013, U.S. federal government orders, contracts and subcontracts accounted for 5.1%, 4.3% and 6.2% of total revenue, respectively. For the fiscal years ended January 2, 2016, December 27, 2014 and December 28, 2013 approximately 76.6%, 75.7% and 75.3%, respectively, of our home robot product revenue resulted from sales to 15 customers. For the fiscal years ended January 2, 2016, December 27, 2014 and December 28, 2013, the Company generated an aggregate of 26.0%, 29.8% and 33.2%, respectively, of its total revenue from its home robots distributor in Japan (Sales on Demand Corporation) and a network of affiliated European distributors of the Company's home robots (Robopolis SAS).
Segment information about revenue, cost of revenue, gross margin and income before income taxes	The Company’s other revenue and cost of revenue result from other smaller business units that do not meet the criteria of a