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Discontinued Operations (Details) |  |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | ---
Oct. 29, 2019 USD ($) | Feb. 22, 2019 USD ($) | Jun. 29, 2018 USD ($) | Jan. 25, 2020 USD ($) contract | Jan. 26, 2019 USD ($) | Jan. 25, 2020 USD ($) contract | Jan. 26, 2019 USD ($)
Discontinued operations |  |  |  |  |  |  |
Amount of alleged damages | $ 1,700,000 | $ 6,500,000 |  |  |  |  |
Statement of operations |  |  |  |  |  |  |
Net loss from discontinued operations |  |  |  |  | $ (62,000) |  | $ (2,511,000)
Gain on sale of business, net of tax expense of $2,463 |  |  |  |  |  |  | 8,452,000
Tax expense |  |  |  |  |  |  | 2,463,000
Net (loss) income from discontinued operations |  |  |  |  | (62,000) |  | 5,941,000
EES Business | Disposed of by sale |  |  |  |  |  |  |
Discontinued operations |  |  |  |  |  |  |
Cash consideration received |  |  | $ 31,994,000 |  |  |  |
Gain on sale of business |  |  | 11,420,000 |  |  |  |
Amount of reduction to gain resulting from a working capital adjustment |  |  |  |  |  |  | 505,000
Working capital dispute |  |  | 922,000 |  |  |  |
Amounts recorded in the consolidated financial statements |  |  | 0 |  |  |  |
Statement of operations |  |  |  |  |  |  |
Net Sales |  |  |  |  |  |  | 4,256,000
Cost of sales |  |  |  |  | 54,000 |  | 5,080,000
Gross margin |  |  |  |  | (54,000) |  | (824,000)
Selling, general and administrative |  |  |  |  | 14,000 |  | 1,517,000
Research and development |  |  |  |  | 34,000 |  | 1,075,000
Other income, net |  |  |  |  |  |  | 1,000
Loss from discontinued operations before income taxes |  |  |  |  | (102,000) |  | (3,415,000)
Benefit for income taxes |  |  |  |  | (41,000) |  | (904,000)
Net loss from discontinued operations |  |  |  |  | (61,000) |  | (2,511,000)
Gain on sale of business, net of tax expense of $2,463 |  |  |  |  | (1,000) |  | 8,452,000
Tax expense |  |  |  |  |  |  | 2,463,000
Net (loss) income from discontinued operations |  |  |  |  | (62,000) |  | 5,941,000
EES Business | Disposed of by sale | Other income (expense) |  |  |  |  |  |  |
Statement of operations |  |  |  |  |  |  |
Net Sales |  |  |  | $ 57,000 | $ 657,000 | $ 545,000 | $ 2,013,000
Holdback | Disposed of by sale |  |  |  |  |  |  |
Discontinued operations |  |  |  |  |  |  |
Cash consideration received |  |  | $ 6,500,000 |  |  |  |
Number of remaining contracts | contract |  |  |  | 2 |  | 2 |

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