Consolidated Statements of Equity (USD $) In Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Loss	Retained Earnings [Member]	Noncontrolling Interest [Member]
Balances at Jan. 03, 2010	$ 340,310	$ 28	$ 217,181	$ (146,022)	$ (294)	$ 264,456	$ 4,961
Balances, shares at Jan. 03, 2010		22,911
Issuance of common stock under stock option plans, shares		660
Issuance of common stock under stock option plans	18,310	0	18,310	0	0	0	0
Issuance of common stock under employee stock purchase plan, shares		56
Issuance of common stock under employee stock purchase plan	2,185	0	2,185	0	0	0	0
Shares withheld for taxes on restricted stock, net of forfeitures, shares		(59)
Shares withheld for taxes on restricted stock, net of forfeitures	(1,169)	0	(1,169)	0	0	0	0
Purchases of treasury stock, shares		(603)
Purchases of treasury stock	(26,200)	(5)	0	(26,195)	0	0	0
Share-based compensation expense	4,049	0	4,049	0	0	0	0
Tax benefit from share-based compensation, net	2,440	0	2,440	0	0	0	0
Unrealized gain on derivatives	294	0	0	0	294	0	0
Distributions to noncontrolling interest partners	(1,013)	0	0	0	0	0	(1,013)
Contributions from noncontrolling interest partners	10	0	0	0	0	0	10
Purchases of noncontrolling interests, net of tax benefit	(1,363)	0	(277)	0	0	0	(1,086)
Partner investment expense	(271)	0	0	0	0	0	(271)
Partner bonus expense, imputed	302	0	0	0	0	0	302
Cash dividends paid	(9,676)		15	0	0	(9,691)	0
Net income	32,548		0	0	0	31,929	619
Balances at Oct. 03, 2010	360,756	23	242,734	(172,217)	0	286,694	3,522
Balances, shares at Oct. 03, 2010		22,965
Balances at Jan. 02, 2011	362,443	23	250,019	(187,112)	0	296,564	2,949
Balances, shares at Jan. 02, 2011		22,833
Issuance of common stock under stock option plans, shares		30
Issuance of common stock under stock option plans	792	0	792	0	0	0	0
Issuance of common stock under employee stock purchase plan, shares		60
Issuance of common stock under employee stock purchase plan	2,214	0	2,214	0	0	0	0
Shares withheld for taxes on restricted stock, net of forfeitures, shares		(4)
Shares withheld for taxes on restricted stock, net of forfeitures	(14)		(14)
Purchases of treasury stock, shares		(1,709)
Purchases of treasury stock	(59,260)	(2)	0	(59,258)	0	0	0
Share-based compensation expense	2,855	0	2,855	0	0	0	0
Tax benefit from share-based compensation, net	131	0	131	0	0	0	0
Distributions to noncontrolling interest partners	(528)	0	0	0	0	0	(528)
Purchases of noncontrolling interests, net of tax benefit	(2,973)	0	(1,538)	0	0	0	(1,435)
Partner investment expense	(236)	0	0	0	0	0	(236)
Partner bonus expense, imputed	146	0	0	0	0	0	146
Cash dividends paid	(16,909)		29	0	0	(16,938)	0
Net income	26,315		0	0	0	25,999	316
Balances at Oct. 02, 2011	$ 314,976	$ 21	$ 254,488	$ (246,370)	$ 0	$ 305,625	$ 1,212
Balances, shares at Oct. 02, 2011		21,210