Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Aug. 03, 2013	Jul. 28, 2012
Cash flows from operating activities:
Net income	$ 22,337	$ 37,990
Adjustments to reconcile net income to net cash (used in) operating activities:
Depreciation and amortization	14,666	13,746
Loss on disposals of property, plant and equipment	155	119
Non-cash equity compensation	927	1,434
(Decrease) in deferred taxes	(1,052)	(783)
Net (increase) in operating working capital and other components	(68,414)	(75,802)
Net cash (used in) operating activities	(31,381)	(23,296)
Cash flows from investing activities:
Capital expenditures	(12,031)	(11,830)
Proceeds from maturities of short-term investments	305,833	246,580
Payments to acquire short-term investments	(289,873)	(239,837)
Net cash provided by (used in) investing activities	3,929	(5,087)
Cash flows from financing activities:
Income tax benefit from equity compensation plans	(40)	6
Net proceeds from issuance of common stock	0	479
Tax payments related to equity compensation plans	(491)	(634)
Net cash (used in) financing activities	(531)	(149)
Net (decrease) in cash and cash equivalents	(27,983)	(28,532)
Cash and cash equivalents - beginning of period	71,288	87,230
Cash and cash equivalents - end of period	$ 43,305	$ 58,698