BORROWINGS - Convertible Senior Unsecured Notes Narrative (Details) $ / shares in Units, shares in Millions, instrument in Millions			12 Months Ended
	Jun. 09, 2020 USD ($) instrument $ / shares	Jun. 05, 2020 shares $ / shares	Sep. 27, 2024 USD ($) shares	Sep. 29, 2023 USD ($)	Oct. 01, 2022
Line of Credit Facility
Total debt outstanding, net			$ 443,400,000	$ 442,600,000
Current maturities of long-term debt, net			$ 46,300,000	$ 1,500,000
Convertible Notes | Convertible Debt
Line of Credit Facility
Debt instrument, face amount	$ 200,000,000
Contractual interest rate (as a percent)	4.00%				4.00%
Proceeds from convertible debt	$ 193,100,000
Conversion ratio	0.048084
Convertible, conversion price (USD per share) | $ / shares	$ 20.81	$ 20.81
Number of warrants (in shares) | shares		9.6	9.6
Total debt outstanding, net			$ 155,000,000
Current maturities of long-term debt, net			$ 45,000,000
Convertible Notes | Convertible Debt | Maximum
Line of Credit Facility
Number of warrants (in shares) | instrument	9.6