Benefit Plans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2012	Oct. 02, 2011	Sep. 30, 2012	Oct. 02, 2011	Jan. 01, 2012
Change in Projected Benefit Obligation
Projected benefit obligation, beginning of period			$ 16,879	$ 13,830	$ 13,830
Service cost	193	161	580	483	645
Interest cost	197	167	590	501	667
Actuarial gain			0		1,922
Benefits paid			(154)		(185)
Projected benefit obligation, end of period	17,895		17,895		16,879
Change in Plan Assets
Plan assets at fair value, beginning of period			0	0	0
Company contributions			154		185
Benefits paid			(154)		(185)
Plan assets at fair value, end of period	0		0		0
Unfunded Status of the Plan	(17,895)		(17,895)		(16,879)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	0	0	0	0
Defined Benefit Plan, Amortization of Net Gains (Losses)	48	16	145	48
Defined Benefit Plan, Net Periodic Benefit Cost	$ 438	$ 344	$ 1,315	$ 1,032