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Business Acquisitions - Narrative (Details) $ in Thousands |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Dec. 01, 2022 USD ($) plant | Nov. 18, 2022 USD ($) plant | Mar. 31, 2023 USD ($) | Mar. 31, 2022 USD ($) | Mar. 31, 2023 USD ($) | Mar. 31, 2022 USD ($) | Sep. 30, 2022 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |
Business combination, consideration received |  |  |  |  | $ 36,987 | $ 0 |
Gain on facility exchange |  |  | $ 0 | $ 0 | 5,389 | $ 0 |
Goodwill |  |  | 163,385 |  | 163,385 |  | $ 129,465
Revenues since acquisition date |  |  | 17,800 |  | 22,000 |  |
Net income |  |  | 600 |  | 900 |  |
Acquisition related costs |  |  | 0 |  |  |  |
Expenses and losses recognized |  |  |  |  | 200 |  |
Acquisition related expenses, excluded |  |  | 200 |  | 200 |  |
Net increase to goodwill |  |  |  |  | 4,000 |  |
Tennessee Acquisition - Provisional |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Plants acquired | plant |  | 3 |  |  |  |  |
Consideration transferred |  | $ 9,500 |  |  |  |  |
Business combination, consideration received |  | 37,000 |  |  |  |  |
Gain on facility exchange |  | $ 5,400 |  |  |  |  |
North Carolina Acquisition - Provisional |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Plants acquired | plant | 3 |  |  |  |  |  |
Consideration transferred | $ 68,300 |  |  |  |  |  |
2023 Acquisitions |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Consideration transferred |  |  |  |  | 77,800 |  |
Goodwill |  |  | 32,200 |  | 32,200 |  |
Net working capital |  |  |  |  | 9,300 |  |
Property, plant and equipment allocation |  |  | $ 35,300 |  | 35,300 |  |
Working capital receivable |  |  |  |  | $ 1,000 |  |

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI https://asc.fasb.org/extlink&oid=123586518&loc=d3e1043-128460 + Details
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- Definition Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1B -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=109239629&loc=SL4582445-111684 + Details
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