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Other (Income) Expense (Components of Other Nonoperating (Income) Expense) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 28, 2015
Mar. 29, 2014
Other (income) expense, net:    
Earnings from equity investments $ 0us-gaap_IncomeLossFromEquityMethodInvestments $ 3us-gaap_IncomeLossFromEquityMethodInvestments
Miscellaneous (income) expense 10us-gaap_NonoperatingIncomeExpense 7us-gaap_NonoperatingIncomeExpense
Other (income) expense, net $ 10us-gaap_OtherNonoperatingIncomeExpense $ 10us-gaap_OtherNonoperatingIncomeExpense