Consolidated Statements of Shareholders' Equity and Comprehensive (Loss) Income (USD $) In Thousands, unless otherwise specified	Total	Common Shares	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning Balance at Jan. 31, 2009	$ 258,426	$ 116,740	$ 143,025	$ (1,339)
Beginning Balance (in shares) at Jan. 31, 2009		43,950
Exercise of stock options (in shares)		301
Exercise of stock options	1,319	1,319
Employee stock purchase plan (in shares)		63
Employee stock purchase plan	365	365
Restricted stock awards (in shares)		26
Restricted stock awards	155	155
Tax deficiency (benefit) from exercise of stock options and awards, net	107	107
Stock-based compensation expense	3,866	3,866
Comprehensive (loss) income:
Net (loss) income	11,880		11,880
Unrealized gain on short-term and long-term investments, net of foreign currency exchange rate adjustments	929			929
Total comprehensive (loss) income	12,809
Ending Balance at Jan. 30, 2010	277,047	122,552	154,905	(410)
Ending Balance (in shares) at Jan. 30, 2010		44,340
Exercise of stock options (in shares)		174
Exercise of stock options	938	938
Employee stock purchase plan (in shares)		95
Employee stock purchase plan	411	411
Restricted stock awards (in shares)		21
Restricted stock awards	155	155
Tax deficiency (benefit) from exercise of stock options and awards, net	(41)	(41)
Stock-based compensation expense	4,047	4,047
Dividends	(57,017)		(57,017)
Comprehensive (loss) income:
Net (loss) income	(8,235)		(8,235)
Unrealized gain on short-term and long-term investments, net of foreign currency exchange rate adjustments	192			192
Total comprehensive (loss) income	(8,043)
Ending Balance at Jan. 29, 2011	217,497	128,062	89,653	(218)
Ending Balance (in shares) at Jan. 29, 2011		44,630
Exercise of stock options (in shares)		523
Exercise of stock options	2,743	2,743
Employee stock purchase plan (in shares)		71
Employee stock purchase plan	389	389
Restricted stock awards (in shares)		37
Restricted stock awards	189	189
Repurchase of common stock (in shares)
Repurchase of common stock	(25,079)	(3,309)	(21,770)
Tax deficiency (benefit) from exercise of stock options and awards, net	(2,806)	(2,806)
Stock-based compensation expense	4,086	4,086
Dividends	(12,199)		(12,199)
Comprehensive (loss) income:
Net (loss) income	(1,818)		(1,818)
Unrealized gain on short-term and long-term investments, net of foreign currency exchange rate adjustments	1			1
Total comprehensive (loss) income	(1,817)
Ending Balance at Jan. 28, 2012	$ 183,003	$ 129,354	$ 53,866	$ (217)
Ending Balance (in shares) at Jan. 28, 2012		42,048