Unaudited Condensed Consolidated Statements of Cash Flows (Going Concern Basis) $ in Thousands	3 Months Ended
	Apr. 29, 2017 USD ($)
Cash flows from operating activities:
Net loss	$ (14,859)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	4,277
Stock-based compensation	1,529
Provision for excess and obsolete inventory	449
Provision for sales returns, discounts and doubtful accounts	11
Deferred income taxes	(81)
Impairment of IP	3,006
Other non-cash activities	313
Changes in operating assets and liabilities:
Accounts receivable	8,880
Inventory	(1,167)
Prepaid expenses, other current and non-current assets	(337)
Accounts payable	3,411
Other long-term liabilities, accrued liabilities, compensation and related benefits	2,352
Income taxes payable	732
Net cash provided by operating activities	8,516
Cash flows from investing activities:
Restricted cash	(15)
Sales and maturities of marketable securities	2,003
Purchases of software, equipment and leasehold improvements	(4,118)
Purchases of IP	(1,044)
Net cash used in investing activities	(3,174)
Cash flows from financing activities:
Net share settlement of equity awards issued to employees	(84)
Net proceeds from exercise of employee stock options and stock purchase rights	6
Net cash used in financing activities	(78)
Effect of foreign exchange rate changes on cash and cash equivalents	8
Net increase in cash and cash equivalents	5,272
Cash and cash equivalents, beginning of period	66,425
Cash and cash equivalents, end of period	71,697
Supplemental disclosure of cash flow information:
Cash paid for income taxes	$ 349