(15) Stockholders' Equity (Details) (USD $) In Thousands, unless otherwise specified					12 Months Ended
	Jan. 01, 2012	Jan. 02, 2011	Jan. 03, 2010	Dec. 28, 2008	Jan. 01, 2012 Treasury Stock [Member]	Jan. 02, 2011 Treasury Stock [Member]	Jan. 03, 2010 Treasury Stock [Member]
Number of shares at beginning of period	470,424	470,424	470,424	470,424
Number of shares at end of period	470,424	470,424	470,424	470,424
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Number of shares at beginning of period					52,050	17,492	1,220
Repurchase of common stock					30,983	35,406	16,911
Common shares issued upon exercises of stock options, net					(1,461)	(383)	(524)
Common shares Issued upon grant of restricted stock and for directors fees					(1,163)	(470)	(52)
Other					291	5	(63)
Number of shares at end of period					80,700	52,050	17,492
Preferred stock, shares authorized	100,000		100,000
Preferred stock, shares issued	0	0	0
Restricted assets	$ 1,799,664
Restricted net assets as percentage of consolidated equity	90.00%
Amount available for payment of dividends by subsidiary to Parent	$ 77,747