Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jul. 28, 2019	Jul. 29, 2018
Cash flows from operating activities:
Net income	$ 18,660	$ 37,551
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	20,543	24,540
Accretion of deferred financing costs and debt discount	247	269
Deferred income taxes	3,253	(14,870)
Share-based compensation and warrant costs	19,974	49,481
Loss on disposition of assets	426	11
Earn-out liabilities	(2,161)	(900)
Equity in net losses of equity method investments	243	58
Corporate owned life insurance, net	756	645
Changes in assets and liabilities:
Accounts receivable, net	20,580	(20,653)
Inventories	(11,381)	13,020
Other assets	(6,950)	4,190
Accounts payable	(2,256)	2,626
Accrued liabilities	(18,057)	(6,414)
Deferred revenue	16	(53)
Income taxes payable	(2,105)	(1,697)
Other liabilities	(1,695)	(3,437)
Net cash provided by operating activities	40,093	84,367
Cash flows from investing activities:
Proceeds from sales of property, plant and equipment	143	10
Purchase of property, plant and equipment	(16,893)	(9,821)
Purchase of investments	(7,692)	(5,595)
Acquisition, net of cash acquired	0	(7,321)
Proceeds from sale of investments	0	1,601
Net cash used in investing activities	(24,442)	(21,126)
Cash flows from financing activities:
Payments of term loans	(9,375)	(7,500)
Payment for employee share-based compensation payroll taxes	(13,401)	(10,640)
Proceeds from exercise of stock options	2,954	8,048
Repurchase of outstanding common stock	(20,110)	(49,738)
Net cash used in financing activities	(39,932)	(59,830)
Net (decrease) increase in cash and cash equivalents	(24,281)	3,411
Cash and cash equivalents at beginning of period	312,120	307,923
Cash and cash equivalents at end of period	287,839	311,334
Supplemental disclosure of cash flow information
Income taxes paid	7,580	2,939
Interest paid	4,348	3,900
Non-cash items
Capital expenditures in accounts payable	$ 2,024	$ 2,314