Debt (Schedule of Equipment Financings) (Details) - USD ($) $ in Thousands	3 Months Ended
Dec. 31, 2022	Sep. 30, 2022
Equipment Financing Due Sep 30 2032 \| Loans Payable
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.30%
Principal Amount	$ 1,452
Debt instrument, basis spread on variable rate	2.25%
Equipment Financing Due Sep 30 2032 \| Loans Payable \| Bloomberg Short-Term Bank Yield Index
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	3.05%
Equipment Financing Due May 31 2029 \| Loans Payable
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.03%
Principal Amount	$ 2,041
Debt instrument, basis spread on variable rate	2.75%
Equipment Financing Due May 31 2029 \| Loans Payable \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.28%
Equipment Financing Due Jun 30 2029 \| Loans Payable
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	6.33%
Principal Amount	$ 6,208
Equipment Financings
Debt Instrument [Line Items]
Collateral amount, gross	154,493	$ 155,756
Collateral amount, net	130,185	131,594
Equipment Financings \| Property, plant and equipment net \| Machinery and equipment
Debt Instrument [Line Items]
Collateral amount, gross	79,965	86,294
Collateral amount, net	55,996	62,459
Equipment Financings \| Property, plant and equipment net \| Construction in process
Debt Instrument [Line Items]
Collateral amount, gross	16,531	14,201
Collateral amount, net	16,531	14,201
Equipment Financings \| Receivables, net
Debt Instrument [Line Items]
Collateral amount, gross	793	108
Collateral amount, net	793	108
Equipment Financings \| Prepaid and other current assets
Debt Instrument [Line Items]
Collateral amount, gross	3,147	3,276
Collateral amount, net	3,147	3,276
Equipment Financings \| Other non‑current assets
Debt Instrument [Line Items]
Collateral amount, gross	54,057	51,877
Collateral amount, net	53,718	$ 51,550
Equipment Financings \| Loans Payable
Debt Instrument [Line Items]
Principal Amount	$ 9,701

Debt Instrument Collateral Amount, Gross

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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- Definition

Amount of assets pledged to secure a debt instrument.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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