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Revenue Recognition (Tables) | 3 Months Ended
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Jun. 30, 2026
Revenue from Contract with Customer [Abstract] |
Schedule of Contract Asset and Liability | The following table presents the balance of the Company’s contract asset and liability as of the periods presented:
(In thousands) | June 30, 2026 |  | March 31, 2026
Contract asset - product returns | $ | 1,409 |  |  | $ | 1,383 |
Refund liability | 4,912 |  |  | 4,112 |
Disaggregation of Revenue | The following table presents net sales (including intersegment net sales) disaggregated by product type for the Company’s Stormwater and Wastewater segments.
| Three Months Ended June 30, |  |
(Amounts in thousands) | 2026 |  | 2025 |  |  |  |
Stormwater |  |  |  |  |  |  |
Domestic - Pipe | $ | 458,088 |  |  | $ | 424,606 |  |  |  |  |
Domestic - Allied Products | 303,387 |  |  | 187,506 |  |  |  |  |
International | 59,467 |  |  | 48,491 |  |  |  |  |
Total Stormwater | 820,942 |  |  | 660,603 |  |  |  |  |
Wastewater | 208,920 |  |  | 194,962 |  |  |  |  |
Intersegment Eliminations | (28,750) |  |  | (25,685) |  |  |  |  |
Consolidated Net Sales | $ | 1,001,112 |  |  | $ | 829,880 |  |  |  |  |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-10 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 + Details
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