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Acquisitions - Additional Information (Detail) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Jan. 07, 2025 | Aug. 09, 2024 | Mar. 31, 2025 | Mar. 31, 2024 | Mar. 31, 2023
Business Acquisition [Line Items] |  |  |  |  |
Purchase price of separate operating segment |  |  | $ 174,850 | $ 55,053 | $ 158,451
Depreciation |  |  | 147,600 | $ 139,500 | $ 129,600
Western Pennsylvania Acquisition [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price of separate operating segment | $ 150,000 |  |  |  |
Depreciation |  |  | 1,700 |  |
Amortization |  |  | $ 1,900 |  |
Western Pennsylvania Acquisition [Member] | Minimum [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Property, plant and equipment, estimated useful life |  |  | 5 years |  |
Western Pennsylvania Acquisition [Member] | Maximum [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Property, plant and equipment, estimated useful life |  |  | 30 years |  |
Northern Kentucky Acquisition [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price of separate operating segment |  | $ 24,900 |  |  |
Acquired intangible assets estimated useful life |  |  | 15 years |  |
Depreciation |  |  | $ 1,700 |  |
Amortization |  |  | $ 700 |  |
Northern Kentucky Acquisition [Member] | Minimum [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Property, plant and equipment, estimated useful life |  |  | 5 years |  |
Northern Kentucky Acquisition [Member] | Maximum [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Property, plant and equipment, estimated useful life |  |  | 30 years |  |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 985 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481283/985-20-50-2 + Details
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- Definition The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-5 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479581/805-30-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-13 + Details
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