Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	May. 01, 2016	Apr. 26, 2015
Cash flows from operating activities:
Net income (loss)	$ 6,887	$ (142)
Adjustments to reconcile net income (loss) to net cash provided by operating activities, net of effects of acquisitions:
Depreciation, amortization and impairments	11,926	12,040
Accretion of deferred financing costs and debt discount	168	313
Deferred income taxes	4,261	(390)
Stock-based compensation	5,707	5,946
Earn-out liabilities	(33)	162
Environmental reserve	0	(2,335)
Changes in assets and liabilities:
Accounts receivable, net	(5,046)	(16,359)
Inventories	1,336	(873)
Prepaid expenses and other assets	(12,786)	(4,684)
Accounts payable	1,817	21,613
Accrued liabilities	(1,675)	(8,095)
Deferred revenue	133	1,045
Income taxes payable and prepaid taxes	(2,655)	1,205
Other liabilities	3,761	5,251
Net cash provided by operating activities	13,801	14,697
Cash flows from investing activities:
Purchase of property, plant and equipment	(2,713)	(4,841)
Acquisitions, net of cash acquired	0	(34,932)
Purchases of other investments	0	(2,230)
Net cash used in investing activities	(2,713)	(42,003)
Cash flows from financing activities:
Borrowings under line of credit	0	35,000
Payment for employee stock-based compensation payroll taxes	(2,396)	(3,602)
Proceeds from exercises of stock options	214	1,785
Repurchase of outstanding common stock	0	(20,014)
Payment of long term debt	(4,687)	(4,687)
Net cash (used in) provided by financing activities	(6,869)	8,482
Net increase (decrease) in cash and cash equivalents	4,219	(18,824)
Cash and cash equivalents at beginning of period	211,810	230,328
Cash and cash equivalents at end of period	$ 216,029	$ 211,504