Accounting for Sharebased Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended							12 Months Ended
	Mar. 02, 2013 number	Mar. 03, 2012 number	Mar. 02, 2013 Non Employee Directors [Member]	Mar. 02, 2013 Employees [Member]	Mar. 02, 2013 Nonvested restricted stock units [Member]	Mar. 02, 2013 Nonvested restricted stock shares [Member]	Mar. 02, 2013 Weighted-Average Grant Date Fair Value [Member]	Dec. 01, 2012 Weighted-Average Grant Date Fair Value [Member]	Mar. 02, 2013 Nonvested restricted stock weighted-average remaining contractual life (in years) [Member]	Dec. 01, 2012 Nonvested restricted stock weighted-average remaining contractual life (in years) [Member]
Share-based Compensation [Abstract]
Expected life	4.75	4.75
Weighted-average expected volatility	48.02%	51.76%
Expected volatility	48.02%	51.76%
Risk-free interest rate	0.73%	0.71%
Expected dividend yield	0.86%	1.06%
Weighted-average fair value of grants	$ 15.12	$ 11.42
Nonvested Restricted Activity [Line Items]
Nonvested beginning balance	386,415				141,184	245,231
Granted	239,053				59,926	179,127
Vested	(166,228)				(63,760)	(102,468)
Forfeited	(1,291)				0	(1,291)
Nonvested ending balance	457,949				137,350	320,599
Weighted Average Remaining Contractual Life Beginning									1.8	0.9
Weighted Average Remaining Contractual Life Granted									2.4
Weighted Average Remaining Contractual Life Forfeited									1.5
Weighted Average Remaining Contractual Life Vested									0
Weighted Average Remaining Contractual Life Ending									1.8	0.9
Total Nonvested Restricted Stock Weighted Average Beginning							$ 33.31	$ 25.41
Granted weighted average grant date fair value							$ 39.64
Vested weighted average grant date fair value							$ 37.73
Forfeited weighted average grant date fair value							$ 25.76
Total Nonvested Restricted Stock Weighted Average Ending							$ 33.31	$ 25.41
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value	$ 6,272	$ 4,211
Total fair value of nonvested restricted stock	13,504
Schedule Of Share Based Compensation Nonemployee Director Stock Award Plan Activity Units [Line Items]
Units outstanding beginning	407,431		338,769	68,662
Participant contributions	4,489		3,482	1,007
Company match contributions	499		387	112
Payouts	(19,778)		(17,096)	(2,682)
Units outstanding ending	392,641		325,542	67,099
Other Share Based Activity [Abstract]
Fair values of options granted	6,546	5,781
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value	4,200	3,538
Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options	3,774	5,225
Repurchased restricted stock shares	59,652	50,644
Share-based compensation expense recognition [Abstract]
Share-based compensation expense	3,320	2,795
Excess tax benefit recognized	1,804	881
Unrecognized compensation costs related to unvested stock option awards	10,968
The weighted average period over which unrecognized share-based compensation costs are expected to be reported.	2.1
Unrecognized compensation costs related to unvested restricted stock awards	10,195
The weighted average period over which unrecognized compensation costs related to unvested restricted stock awards	1.8
Restricted Unit Unrecognized Costs	$ 3,309
Summary of option activity [Roll Forward]
Outstanding beginning balance	2,429,750
Granted	432,845
Exercised	(207,154)
Forfeited or Cancelled	(4,309)
Outstanding ending balance	2,651,132
Weighted-average exercise price activity [Abstract]
Outstanding beginning balance	$ 21.63
Granted	$ 39.64
Exercised	$ 18.09
Forfeited or Cancelled	$ 27.75
Outstanding ending balance	$ 24.84