Goodwill and Intangible Assets Goodwill and Indefinite-Lived Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013
Goodwill [Roll Forward]
Beginning balance	$ 8,963	$ 2,850
Comfortaire purchase	0	6,157	[1]
Ending balance	8,963	9,007
Indefinite-Lived Intangible Assets [Roll Forward]
Beginning balance	1,396	0
Indefinite-lived Intangible Assets Acquired	0	1,396	[1]
Ending balance	$ 1,396	$ 1,396

[1] (1) Comfortaire purchase includes goodwill and indefinite-lived trade name/trademarks resulting from the acquisition of Comfortaire Corporation in the first quarter of fiscal 2013.