Unaudited Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	May 03, 2014	May 04, 2013
Cash flows from operating activities
Net loss	$ (9,914)	$ (4,533)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	5,412	5,568
Stock-based compensation	1,488	2,033
Provision for excess and obsolete inventory	364	561
(Release of) provision for sales returns, discounts and doubtful accounts	(105)	71
Deferred income taxes	57	1,669
Gain on sale of development project		(1,079)
Impairment charges	110
Tax effect related to stock options	(620)
Excess tax expense from stock-based compensation	620	188
Other non-cash activities		65
Changes in operating assets and liabilities:
Accounts receivable	3,976	(4,683)
Inventory	566	5,341
Prepaid expenses and other current and non-current assets	841	2,060
Accounts payable	(4,389)	3,117
Accrued liabilities, compensation and related benefits	662	(3,244)
Income taxes payable and other long-term liabilities	(5,353)	(1,498)
Net cash (used in) provided by operating activities	(6,285)	5,636
Cash flows from investing activities
Restricted cash	235	(2)
Purchases of marketable securities		(2,535)
Sales and maturities of marketable securities	6,558	3,390
Purchases of software, equipment and leasehold improvements	(818)	(2,594)
Purchases of IP	(1,319)	(2,750)
Proceeds from sale of development project, net of transaction fees		1,971
Repayment of note receivable	60	250
Net cash provided by (used in) investing activities	4,716	(2,270)
Cash flows from financing activities
Excess tax benefit from stock-based compensation	620
Net proceeds from exercise of employee stock options and stock purchase rights	1	32
Net cash provided by financing activities	621	32
Effect of foreign exchange rate changes on cash and cash equivalents	53	(169)
Net (decrease) increase in cash and cash equivalents	(895)	3,229
Cash and cash equivalents, beginning of period	64,326	51,218
Cash and cash equivalents, end of period	63,431	54,447
Supplemental disclosure of cash flow information
Cash paid for income taxes	$ 3,694	$ 1,969