Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Oct. 29, 2017	Oct. 30, 2016
Cash flows from operating activities:
Net income	$ 37,723	$ 46,642
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	35,794	35,506
Impairment of assets	4,250	0
Accretion of deferred financing costs and debt discount	430	492
Deferred income taxes	5,508	15,659
Share-based compensation and warrant costs	44,166	21,198
Loss (gain) on disposition of business operations and assets	283	(24,988)
Earn-out liabilities	188	(162)
Equity in net losses of equity method investments	204	0
Gain from convertible debt settlement	(4,275)	0
Contingencies	0	(68)
Corporate owned life insurance, net	843	436
Changes in assets and liabilities:
Accounts receivable, net	(14,726)	(15,994)
Inventories	(5,697)	1,302
Other assets	(2,618)	(10,298)
Accounts payable	(6,683)	6,775
Accrued liabilities	(7,808)	8,885
Deferred revenue	(55)	3,300
Income taxes payable	(17,520)	(7,875)
Other liabilities	2,843	3,884
Net cash provided by operating activities	72,850	84,694
Cash flows from investing activities:
Proceeds from convertible debt settlement	5,700	0
Proceeds from sales of property, plant and equipment	180	0
Purchase of property, plant and equipment	(26,818)	(13,754)
Purchase of investments	(13,337)	(3,248)
Acquisition, net of cash acquired	(17,619)	0
Proceeds from disposition of business operations	0	32,045
Proceeds from sale of investments	0	555
Net cash (used in) provided by investing activities	(51,894)	15,598
Cash flows from financing activities:
Payments of term loans	(11,250)	(9,374)
Payment for employee share-based compensation payroll taxes	(10,661)	(5,928)
Proceeds from exercise of stock options	5,340	1,678
Repurchase of outstanding common stock	(10,394)	(539)
Net cash used in financing activities	(26,965)	(14,163)
Net (decrease) increase in cash and cash equivalents	(6,009)	86,129
Cash and cash equivalents at beginning of period	297,134	211,810
Cash and cash equivalents at end of period	291,125	297,939
Supplemental disclosure of cash flow information
Income taxes paid	24,632	5,067
Interest paid	5,197	4,400
Non-cash items
Capital expenditures	4,417	1,670
Convertible debt	$ 0	$ 1,425