Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	Sep. 26, 2014	Dec. 31, 2013
Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	$ 38	$ 127
Total Assets	38	127
Derivative Liabilities	435	276
Total Liabilities	435	276
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Total Assets	0	0
Derivative Liabilities	0	0
Total Liabilities	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	38	127
Total Assets	38	127
Derivative Liabilities	435	276
Total Liabilities	435	276
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0	0
Total Assets	0	0
Derivative Liabilities	0	0
Total Liabilities	$ 0	$ 0