Debt (Narrative) (United States Credit Facilities) (Details) (USD $) In Thousands, unless otherwise specified			0 Months Ended		0 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 28, 2013 Term Credit Facility (U.S. Facilities) [Member]	Jun. 28, 2013 United States Credit Facilities	Jun. 28, 2013 United States Credit Facilities Prime Rate [Member]	Jun. 28, 2013 United States Credit Facilities LIBOR Eurodollar Loan [Member]	Jun. 28, 2013 Maximum [Member] Term Credit Facility (U.S. Facilities) [Member]
Line of Credit Facility [Line Items]
Credit facility amount outstanding	$ 1,436	$ 795		$ 10,000
Interest rate spread					1.00%	2.25%
Minimum fixed charge coverage ratio			1.25
EBITDA benchmark ratio							2.75
Percentage of subsidiary to secure borrowings in facility			65.00%