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Product Warranties | 12 Months Ended
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Apr. 30, 2020
Product Warranties Disclosures [Abstract] |
Product Warranty Disclosure [Text Block] | 15. Product Warranties The Company generally provides its customers with a one-year warranty regarding the manufactured quality and functionality of its products. For some limited products, the warranty period has been extended. The Company establishes warranty reserves based on its product history, current information on repair costs and annual sales levels. As of April 30, 2020 and 2019, respectively, changes in the carrying amount of accrued product warranty costs, reported in accrued expenses on the consolidated balance sheets, were as follows (in thousands):
|  | 2020 |  |  | 2019 |
Balance at beginning of year |  | $ | 529 |  |  | $ | 520 |
Warranty costs incurred |  |  | (293 | ) |  |  | (398 | )
Product warranty accrual |  |  | 291 |  |  |  | 407 |
Balance at end of year |  | $ | 527 |  |  | $ | 529 |

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- Definition The entire disclosure for standard and extended product warranties and other product guarantee contracts, including a tabular reconciliation of the changes in the guarantor's aggregate product warranty liability for the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -URI http://asc.fasb.org/topic&trid=2155896 + Details
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