Annual report pursuant to Section 13 and 15(d)

Investments - Securities and Investments, Recorded at Fair Value (Detail)

v2.4.1.9
Investments - Securities and Investments, Recorded at Fair Value (Detail) (USD $)
In Thousands, unless otherwise specified
Jan. 03, 2015
Dec. 28, 2013
Available-for-sale Securities, Amortized Cost Basis [Abstract]    
Securities and investments, amortized cost $ 62us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis $ 40us-gaap_AvailableForSaleEquitySecuritiesAmortizedCostBasis
Securities and investments, unrealized gain 0prts_AvailableforsaleEquitySecuritiesAccumulatedGrossUnrealizedGainbeforeTax 7prts_AvailableforsaleEquitySecuritiesAccumulatedGrossUnrealizedGainbeforeTax
Securities and investments, unrealized loss 0prts_AvailableforsaleEquitySecuritiesAccumulatedGrossUnrealizedLossbeforeTax 0prts_AvailableforsaleEquitySecuritiesAccumulatedGrossUnrealizedLossbeforeTax
Short-term investments $ 62us-gaap_AvailableForSaleSecuritiesEquitySecurities $ 47us-gaap_AvailableForSaleSecuritiesEquitySecurities