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Supplemental Cash Flow Information - Schedule of Supplemental Cash Flow Information Regarding Non-cash Investing and Financing Activities - USD ($)	3 Months Ended
	Dec. 31, 2021	Jan. 01, 2021
Supplemental Cash Flow Elements [Abstract]
Cash paid for interest	$ 1,197,000	$ 4,586,000
Cash paid for income taxes	178,000	249,000
Operating lease right-of-use assets obtained in exchange for new lease liabilities	280,000	717,000
Non-cash capital expenditures	1,618,000	350,000
Issuance of common stock for the cashless exercise of warrants	$ 0	$ 36,442,000

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Future cash outflow to pay for purchases of fixed assets that have occurred.

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