Derivative and Hedgiing Activities Derivatives and Hedging Activities - Additional Information (Details) - USD ($)	9 Months Ended	12 Months Ended
	Oct. 02, 2015	Dec. 31, 2014
Derivative [Line Items]
Derivative Assets, Gross Amounts of Derivatives Offset in the Condensed Consolidated Balance Sheets	$ 0	$ 0
Derivative Liabilities, Gross Amounts of Derivatives Offset in the Condensed Consolidated Balance Sheets	0	0
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	$ (221,000)	$ 311,000
Designated as Hedging Instrument [Member] | Forward Contracts [Member]
Derivative [Line Items]
Derivative, Term of Contract	12 months	12 months
Not Designated as Hedging Instrument [Member] | Forward Contracts [Member]
Derivative [Line Items]
Derivative, Term of Contract	3 months	3 months
Operating Expense [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative [Line Items]
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	$ (221,000)