Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2017	May 01, 2016
Cash flows from operating activities:
Net income	$ 11,821	$ 6,887
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	11,301	11,926
Accretion of deferred financing costs and debt discount	146	168
Deferred income taxes	3,151	4,261
Share-based compensation and warrant costs	13,286	5,707
Loss on disposition of business operations and assets	436	0
Earn-out liabilities	0	(33)
Contingencies	(50)	0
Corporate owned life insurance, net	248	270
Changes in assets and liabilities:
Accounts receivable, net	(4,471)	(5,046)
Inventories	(11,292)	1,336
Other assets	3,265	(11,811)
Accounts payable	(4,147)	1,817
Accrued liabilities	(12,536)	(1,675)
Deferred revenue	299	133
Income taxes payable	(3,222)	(2,655)
Other liabilities	2,124	2,516
Net cash provided by operating activities	10,359	13,801
Cash flows from investing activities:
Proceeds from sales of property, plant and equipment	6	0
Purchase of property, plant and equipment	(5,175)	(2,713)
Purchase of investments	(4,750)	0
Net cash used in investing activities	(9,919)	(2,713)
Cash flows from financing activities:
Payments of term loans	(3,750)	(4,687)
Payment for employee share-based compensation payroll taxes	(3,467)	(2,396)
Proceeds from exercise of stock options	1,159	214
Repurchase of outstanding common stock	(9,966)	0
Net cash used in financing activities	(16,024)	(6,869)
Net (decrease) increase in cash and cash equivalents	(15,584)	4,219
Cash and cash equivalents at beginning of period	297,134	211,810
Cash and cash equivalents at end of period	281,550	216,029
Supplemental disclosure of cash flow information
Income taxes paid	1,869	2,639
Interest paid	1,809	1,523
Non-cash items
Capital expenditures	1,511	846
Convertible debt	$ 2,175	$ 2,869