STOCK-BASED COMPENSATION (Details) (USD $)	1 Months Ended		3 Months Ended			12 Months Ended
	Apr. 28, 2012	Mar. 13, 2012	Feb. 02, 2013	Oct. 27, 2012	Jul. 28, 2012	Feb. 02, 2013	Jan. 28, 2012	Jan. 29, 2011	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012
Stock-based compensation expense by type:
Total stock-based compensation expense						$ 5,649,000	$ 5,453,000	$ 4,796,000
Income tax benefit recognized						2,082,000	1,987,000	1,666,000
Stock-based compensation expense, net of income tax						3,567,000	3,466,000	3,130,000
Actual income tax benefit realized for the deductions considered on our income tax returns						5,900,000	3,200,000	4,500,000
Stock option activity [Roll Forward]
Options outstanding at beginning of period (in shares)		421,196				421,196
Granted (in shares)						41,498
Exercised (in shares)						(120,521)
Forfeited, cancelled or expired (in shares)						0
Options outstanding at end of period (in shares)			342,173			342,173	421,196
Exercisable at end of period (in shares)			330,473			330,473
Weighted Average Exercise Price, Options outstanding at beginning of period (in dollars per share)		$ 23.35				$ 23.35
Weighted Average Exercise Price, Options granted (in dollars per share)			$ 52.65			$ 52.65
Weighted Average Exercise Price, Options exercised (in dollars per share)			$ 22.13			$ 22.13
Weighted Average Exercise Price, Options forfeited, cancelled or expired (in dollars per share)						$ 0
Weighted Average Exercise Price, Options outstanding at end of period (in dollars per share)			$ 27.34			$ 27.34	$ 23.35
Weighted Average Exercise Price, Options Exercisable at end of period (in dollars per share)			$ 27.67			$ 27.67
Weighted Average Remaining Contractual Term, Options outstanding at beginning of period (in years)		5.16				5.16
Weighted Average Remaining Contractual Term, Options outstanding at end of period (in years)			5.29			5.29	5.16
Weighted Average Remaining Contractual Term, Options exercisable at end of period (in years)						5.33
Aggregate Intrinsic Value, Options outstanding at beginning of period		9,837,000				9,837,000
Aggregate Intrinsic Value, Options outstanding at end of period			8,875,000			8,875,000	9,837,000
Aggregate Intrinsic Value, Options exercisable at end of period			8,463,000			8,463,000
Employee Stock Purchases [Abstract]
Shares purchased (in shares)						7,596	9,184	13,144
Average price per share (in dollars per share)						$ 43.45	$ 29.76	$ 19.92
Director Deferred Compensation [Abstract]
Total number of stock units deferred under plan (in shares)						646	1,561	0
Equity Incentive Plan [Member]
Stock-based compensation plans [Abstract]
Authorized but unissued shares of common stock (in shares)			1,983,159			1,983,159
Shares available for grant under the Plan (in shares)			781,459			781,459
Employee Stock Purchase Plan [Member]
Stock-based compensation plans [Abstract]
Authorized but unissued shares of common stock (in shares)			204,794			204,794
Shares available for grant under the Plan (in shares)			85,319			85,319
Percentage of quarterly closing price employees pay for shares (in hundredths)						85.00%
Stock-based compensation expense by type:
Total stock-based compensation expense						93,000	76,000	67,000
Fair value and valuation assumptions [Abstract]
Weighted average fair value at grant date (in dollars per share)						$ 12.37	$ 8.23	$ 5.19
Expected life (in years)						0.25	0.25	0.25
Expected volatility - minimum (in hundredths)						39.70%	43.60%	43.50%
Expected volatility - maximum (in hundredths)						42.60%	45.20%	46.60%
Risk-free interest rate - minimum (in hundredths)						0.02%	0.04%	0.05%
Risk-free interest rate - maximum (in hundredths)						0.10%	0.10%	0.15%
Dividend yield (in hundredths)						0.00%	0.00%	0.00%
Director Deferred Compensation Plan [Member]
Stock-based compensation plans [Abstract]
Authorized but unissued shares of common stock (in shares)			112,500			112,500
Shares available for grant under the Plan (in shares)			54,003			54,003
Non-Employee Director Equity Plan [Member]
Stock-based compensation plans [Abstract]
Authorized but unissued shares of common stock (in shares)			500,000			500,000
Shares available for grant under the Plan (in shares)			498,725			498,725
Stock Options [Member]
Stock-based compensation expense by type:
Total stock-based compensation expense						805,000	460,000	792,000
Income tax benefit recognized						300,000	200,000	200,000
Fair value and valuation assumptions [Abstract]
Exercise price (in dollars per share)		$ 52.03							$ 52.70	$ 59.45	$ 57.71	$ 54.55
Weighted average fair value at grant date (in dollars per share)	$ 19.88	$ 19.29	$ 18.14	$ 20.62	$ 21.24	$ 19.39	$ 19.39	$ 19.39
Expected life (in years)	4.75	4.75	4.71	4.71	4.75
Expected volatility (in hundredths)	41.54%	42.45%	39.73%	40.26%	42.59%
Risk-free interest rate (in hundredths)	0.98%	0.94%	0.67%	0.58%	0.69%
Dividend yield (in hundredths)	0.00%	0.00%	0.00%	0.00%	0.00%
Stock option activity [Roll Forward]
Intrinsic value of stock options exercised						4,000,000	5,300,000	11,300,000
Cash received from stock option exercises						2,700,000	4,900,000	9,100,000
RSUs [Member]
Restricted stock unit activity [Roll Forward]
Restricted stock unit awards outstanding at beginning of period (in shares)		457,322				457,322
Granted (in shares)						66,317
PSU Multiplier Earned						0
Vested (in shares)						(130,501)
Forfeited, cancelled or expired (in shares)						(14,772)
Restricted stock unit awards outstanding at January 29, 2011 (in shares)			378,366			378,366
Weighted Average Grant Date Fair Value at January 28, 2012 (in dollars per share)		$ 22.09				$ 22.09
Weighted Average Grant Date Fair Value - Granted (in dollars per share)						$ 52.40
Weighted Average Grant Date Fair Value - PSU Multiplier Earned (in dollars per share)						$ 0
Weighted Average Grant Date Fair Value - Vested (in dollars per share)						$ 16.57
Weighted Average Grant Date Fair Value - Forfeited, cancelled or expired (in dollars per share)			$ 30.00			$ 30.00
Weighted Average Grant Date Fair Value at January 28, 2012 (in dollars per share)			$ 29.00			$ 29.00
PSUs [Member]
Restricted stock unit activity [Roll Forward]
Restricted stock unit awards outstanding at beginning of period (in shares)		295,850				295,850
Granted (in shares)						38,100
PSU Multiplier Earned						27,025
Vested (in shares)						(89,575)
Forfeited, cancelled or expired (in shares)						(5,700)
Restricted stock unit awards outstanding at January 29, 2011 (in shares)			265,700			265,700
Weighted Average Grant Date Fair Value at January 28, 2012 (in dollars per share)		$ 22.95				$ 22.95
Weighted Average Grant Date Fair Value - Granted (in dollars per share)						$ 52.03
Weighted Average Grant Date Fair Value - PSU Multiplier Earned (in dollars per share)						$ 24.50
Weighted Average Grant Date Fair Value - Vested (in dollars per share)						$ 17.78
Weighted Average Grant Date Fair Value - Forfeited, cancelled or expired (in dollars per share)			$ 52.03			$ 52.03
Weighted Average Grant Date Fair Value at January 28, 2012 (in dollars per share)			$ 27.66			$ 27.66
Total Restricted Stock Units [Member]
Stock-based compensation expense by type:
Total stock-based compensation expense						4,715,000	4,857,000	3,937,000
Income tax benefit recognized						1,800,000	1,800,000	1,400,000
Fair value and valuation assumptions [Abstract]
Weighted average fair value at grant date (in dollars per share)						$ 52.26	$ 31.31	$ 25.86
Nonvested awards [Abstract]
Unrecognized compensation cost related to nonvested awards			6,300,000			6,300,000
Unrecognized compensation cost related to nonvested awards, recognition period (in years)						2.0
Restricted stock unit activity [Roll Forward]
Restricted stock unit awards outstanding at beginning of period (in shares)		753,172				753,172
Granted (in shares)						104,417
PSU Multiplier Earned						27,025
Vested (in shares)						(220,076)
Forfeited, cancelled or expired (in shares)						(20,472)
Restricted stock unit awards outstanding at January 29, 2011 (in shares)			644,066			644,066	753,172
Weighted Average Grant Date Fair Value at January 28, 2012 (in dollars per share)		$ 22.43				$ 22.43
Weighted Average Grant Date Fair Value - Granted (in dollars per share)						$ 52.26
Weighted Average Grant Date Fair Value - PSU Multiplier Earned (in dollars per share)						$ 24.50
Weighted Average Grant Date Fair Value - Vested (in dollars per share)						$ 17.07
Weighted Average Grant Date Fair Value - Forfeited, cancelled or expired (in dollars per share)			$ 36.13			$ 36.13
Weighted Average Grant Date Fair Value at January 28, 2012 (in dollars per share)			$ 28.45			$ 28.45	$ 22.43
Restricted Stock and Performance-Based Units
Intrinsic value of vested RSUs						11,800,000
Intrinsic value of nonvested RSUs			34,300,000			34,300,000	36,900,000	22,100,000
Deferred Stock Units [Member]
Stock-based compensation expense by type:
Total stock-based compensation expense						36,000	60,000	0
Income tax benefit recognized						$ 14,000	$ 22,000
Director Deferred Compensation [Abstract]
Total number of stock units deferred under plan (in shares)						646	1,561