Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Apr. 03, 2020	Mar. 29, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (38,588)	$ (69,600)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and intangibles amortization	40,241	55,478
Share-based compensation	18,426	17,349
Warrant liability gain	(4,560)	(3,862)
Deferred financing cost amortization	2,031	2,031
Deferred income taxes	2,322	46
Impairment and restructuring related	0	4,696
Loss on minority equity investment	9,066	8,971
Other adjustments, net	1,029	377
Change in operating assets and liabilities:
Accounts receivable	16,787	9,989
Inventories	8,256	2,904
Prepaid expenses and other assets	9,772	(1,256)
Accounts payable	1,812	(4,103)
Accrued and other liabilities	(849)	1,407
Income taxes	(2,807)	2,411
Net cash provided by operating activities	62,938	26,838
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(9,036)	(22,600)
Proceeds from sales and maturities of short-term investments	90,026	86,447
Purchases of short-term investments	(90,401)	(86,951)
Sale of businesses and assets	363	0
Acquisition of businesses, net	0	(375)
Net cash used in investing activities	(9,048)	(23,479)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from stock option exercises and employee stock purchases	2,052	2,416
Payments on long-term debt	(3,442)	(3,442)
Payments on finance leases and other	(871)	(518)
Repurchase of common stock - tax withholdings on equity awards	(5,949)	(3,426)
Payments of contingent consideration and other	0	(577)
Net cash used in financing activities	(8,210)	(5,547)
Foreign currency effect on cash	(464)	189
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	45,216	(1,999)
CASH AND CASH EQUIVALENTS — Beginning of period	75,519	94,676
CASH AND CASH EQUIVALENTS — End of period	$ 120,735	$ 92,677