Annual report pursuant to Section 13 and 15(d)

Investments (Details)

v2.4.1.9
Investments (Details) (USD $)
Jan. 03, 2015
Dec. 28, 2013
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost   $ 8,642,000us-gaap_HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment
Estimated Fair Value 0us-gaap_HeldToMaturitySecuritiesFairValue 8,642,000us-gaap_HeldToMaturitySecuritiesFairValue
Certificates of Deposit [Member]    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost   8,642,000us-gaap_HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment
/ us-gaap_CashAndCashEquivalentsAxis
= us-gaap_CertificatesOfDepositMember
Estimated Fair Value   $ 8,642,000us-gaap_HeldToMaturitySecuritiesFairValue
/ us-gaap_CashAndCashEquivalentsAxis
= us-gaap_CertificatesOfDepositMember