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Property, Plant and Equipment | 12 Months Ended
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Apr. 30, 2022
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment | Property, Plant and Equipment The components of property, plant and equipment were:
| APRIL 30
(in thousands) | 2022 |  | 2021
Land | $ | 4,431 |  |  | $ | 4,431 |
Buildings and improvements | 119,066 |  |  | 116,103 |
Buildings and improvements - financing leases | 11,164 |  |  | 11,636 |
Machinery and equipment | 324,417 |  |  | 312,555 |
Machinery and equipment - financing leases | 31,341 |  |  | 31,386 |
Software | 28,115 |  |  | 2,816 |
Construction in progress | 22,794 |  |  | 22,669 |
| 541,328 |  |  | 501,596 |
Less accumulated amortization and depreciation | (327,520) |  |  | (297,594) |
Total | $ | 213,808 |  |  | $ | 204,002 |
Amortization and depreciation expense on property, plant and equipment amounted to $38.0 million, $38.3 million, and $36.9 million in fiscal years 2022, 2021, and 2020, respectively. Accumulated amortization on financing leases included in the above table amounted to $32.8 million and $33.0 million as of April 30, 2022 and 2021, respectively.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916 + Details
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