Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jul. 30, 2017	Jul. 31, 2016
Cash flows from operating activities:
Net income	$ 24,385	$ 15,866
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	23,093	23,887
Accretion of deferred financing costs and debt discount	289	332
Deferred income taxes	380	9,495
Share-based compensation and warrant costs	28,810	11,804
Loss on disposition of business operations and assets	424	66
Earn-out liabilities	0	(162)
Contingencies	45	(66)
Corporate owned life insurance, net	554	513
Changes in assets and liabilities:
Accounts receivable, net	(9,490)	(12,821)
Inventories	(9,423)	1,374
Other assets	(1,099)	(10,855)
Accounts payable	(9,132)	3,170
Accrued liabilities	(6,541)	5,070
Deferred revenue	196	1,182
Income taxes payable	1,328	(4,859)
Other liabilities	2,177	1,471
Net cash provided by operating activities	45,996	45,467
Cash flows from investing activities:
Proceeds from sales of property, plant and equipment	6	0
Purchase of property, plant and equipment	(18,952)	(5,348)
Purchase of investments	(7,462)	(1,248)
Acquisitions, net of cash acquired	(17,619)	0
Net cash used in investing activities	(44,027)	(6,596)
Cash flows from financing activities:
Payments of term loans	(7,500)	(9,374)
Payment for employee share-based compensation payroll taxes	(5,687)	(2,849)
Proceeds from exercise of stock options	2,332	968
Repurchase of outstanding common stock	(10,394)	(539)
Net cash used in financing activities	(21,249)	(11,794)
Net (decrease) increase in cash and cash equivalents	(19,280)	27,077
Cash and cash equivalents at beginning of period	297,134	211,810
Cash and cash equivalents at end of period	277,854	238,887
Supplemental disclosure of cash flow information
Income taxes paid	3,078	4,395
Interest paid	3,490	3,252
Non-cash items
Capital expenditures	1,902	3,601
Convertible debt	$ 1,175	$ 1,444