Goodwill Goodwill Narrative (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 29, 2012 reporting_unit	Dec. 31, 2011 reporting_unit	Jan. 01, 2011
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	$ 80,546	$ 80,608	$ 80,546	$ 2,253
Goodwill acquired through merger			86,376
Impairment	$ 7,600	$ 0	$ (7,647)
Number of reporting units with goodwill impairment		4	4
Number of reporting units			12
Goodwill units that failed step one impairment test		2