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Fair Value Measurements (Details) - Fair Value, Inputs, Level 3 [Member] - $ / shares
3 Months Ended 12 Months Ended
Jul. 02, 2016
Jan. 02, 2016
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Common stock price (in dollars per share) $ 1.08 $ 2.22
Dividend yield 0.00% 0.00%
Expected term 3 months 9 months
Risk-free interest rate 0.70% 1.30%
Estimated stock volatility 58.70% 45.00%