Business, Basis of Presentation and Summary of Significant Accounting Policies - Sale of Installed Insulation Business (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Jan. 31, 2025 |
Jan. 31, 2025 |
Jan. 31, 2024 |
Jan. 31, 2025 |
Jan. 31, 2024 |
|
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | |||||
| Proceeds from sale of business | $ 15,888 | $ 1,948 | |||
| Gain on sale of business | $ 7,393 | $ 0 | 7,393 | $ 0 | |
| Disposal Group, Disposed of by Sale, Not Discontinued Operations | Installed Insulation Business | |||||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | |||||
| Proceeds from sale of business | $ 12,500 | ||||
| Gain on sale of business | 7,400 | ||||
| Cash holdback | $ 1,500 | $ 1,500 | $ 1,500 | ||
| Cash holdback, term | 15 months | ||||