Other (Income) Expense (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 27, 2014	Dec. 28, 2013		Dec. 29, 2012
Other operating (income) expense, net:
Insurance proceeds (1)	$ 0	$ (202)	[1]	$ 0
(Gain) loss on property, plant and equipment disposals	(30)	195		1
Loss on currency exchanges	587	217		55
Amortization expense	351	88		0
Retirement expenses	135	154		201
Contract settlement	0	172		0
Miscellaneous (income) expense	(139)	(130)		(189)
Other operating (income) expense, net	$ 904	$ 494		$ 68

[1] The Company recognized a settlement gain of $202 from a company-owned insurance policy during 2013.