Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 30, 2014	Dec. 29, 2015	Dec. 30, 2014	Dec. 31, 2013
Changes in the carrying amount of goodwill
Balance at the beginning of the period		$ 116,571	$ 117,197
Impairment	$ (600)	0	(626)	$ 0
Balance at the end of the period	116,571	116,571	116,571	117,197
Accumulated goodwill impairment loss				4,200
Changes in the carrying amount of intangible assets
Balance at the beginning of the period, net		6,203	7,876
Amortization expense		(1,376)	(1,673)
Balance at the end of the period, net	6,203	4,827	6,203	$ 7,876
Gross carrying amount	15,400	15,400	15,400
Accumulated amortization	$ 9,200	10,500	$ 9,200
Minimum
Changes in the carrying amount of intangible assets
Expected amortization expense for each of the next five years		400
Maximum
Changes in the carrying amount of intangible assets
Expected amortization expense for each of the next five years		$ 1,200