Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Nov. 02, 2013	Oct. 27, 2012
Cash flows from operating activities:
Net income	$ 35,953	$ 51,295
Adjustments to reconcile net income to net cash (used in) operating activities:
Depreciation and amortization	22,132	20,910
Loss on disposals of property, plant and equipment	201	207
Non-cash equity compensation	1,260	1,688
(Decrease) in deferred taxes	(682)	(915)
Net (increase) in operating working capital and other components	(73,391)	(102,821)
Net cash (used in) operating activities	(14,527)	(29,636)
Cash flows from investing activities:
Capital expenditures	(22,118)	(22,423)
Proceeds from maturities of short-term investments	430,767	352,522
Payments to acquire short-term investments	(379,856)	(358,755)
Net cash provided by (used in) investing activities	28,793	(28,656)
Cash flows from financing activities:
Income tax benefit (detriment) from equity compensation plans	(40)	72
Net proceeds from issuance of common stock	0	556
Tax payments related to equity compensation plans	(491)	(634)
Net cash (used in) financing activities	(531)	(6)
Net increase (decrease) in cash and cash equivalents	13,735	(58,298)
Cash and cash equivalents - beginning of period	71,288	87,230
Cash and cash equivalents - end of period	$ 85,023	$ 28,932