Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Apr. 28, 2019	Apr. 29, 2018
Cash flows from operating activities:
Net income	$ 13,294	$ 12,382
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	10,824	12,453
Accretion of deferred financing costs and debt discount	125	136
Deferred income taxes	226	(15,614)
Share-based compensation and warrant costs	11,328	35,516
Gain on disposition of assets	(106)	(10)
Earn-out liabilities	(2,161)	0
Equity in net losses of equity method investments	411	31
Corporate owned life insurance, net	1,025	(254)
Changes in assets and liabilities:
Accounts receivable, net	12,764	(7,844)
Inventories	(9,801)	5,609
Other assets	598	(1,098)
Accounts payable	(1,639)	3,203
Accrued liabilities	(28,174)	(6,852)
Deferred revenue	1,503	(180)
Income taxes payable	(2,105)	(1,698)
Other liabilities	(1,371)	(751)
Net cash provided by operating activities	6,741	35,029
Cash flows from investing activities:
Proceeds from sales of property, plant and equipment	113	27
Purchase of property, plant and equipment	(15,258)	(4,935)
Purchase of investments	(625)	(5,490)
Proceeds from sale of investments	0	1,601
Net cash used in investing activities	(15,770)	(8,797)
Cash flows from financing activities:
Payments of term loans	(4,688)	(3,750)
Payment for employee share-based compensation payroll taxes	(12,372)	(5,769)
Proceeds from exercise of stock options	1,381	4,038
Repurchase of outstanding common stock	(110)	(25,325)
Net cash used in financing activities	(15,789)	(30,806)
Net decrease in cash and cash equivalents	(24,818)	(4,574)
Cash and cash equivalents at beginning of period	312,120	307,923
Cash and cash equivalents at end of period	287,302	303,349
Supplemental disclosure of cash flow information
Income taxes paid	1,730	648
Interest paid	2,212	1,929
Non-cash items
Capital expenditures in accounts payable	$ 1,193	$ 2,054