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Acquisitions (Fair Value of Assets Acquired and Liabilities Assumed) (Details) - USD ($) |  |  | 5 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jul. 31, 2021 | Mar. 02, 2021 | Jul. 31, 2021 | Jul. 31, 2020 | Jul. 31, 2019
Preliminary allocation of aggregate purchase price: |  |  |  |  |
Goodwill | $ 347,698,000 |  | $ 347,698,000 | $ 330,519,000 |
UHP |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Initial upfront payment | 23,979,000 | $ 23,902,000 | 23,979,000 |  |
Hold back amount | 4,991,000 | 5,000,000 | 4,991,000 |  |
Contingent earn-out consideration | 8,500,000 | 8,500,000 | 8,500,000 | $ 0 | $ 0
Aggregate purchase price | 37,470,000 | 37,402,000 |  |  |
Preliminary allocation of aggregate purchase price: |  |  |  |  |
Cash and cash equivalents | 1,391,000 | 1,391,000 | 1,391,000 |  |
Current assets | 1,358,000 | 1,235,000 | 1,358,000 |  |
Property, plant and equipment | 10,000 | 10,000 | 10,000 |  |
Deferred tax assets | 313,000 | 286,000 | 313,000 |  |
Contract liabilities | (648,000) | (657,000) | (648,000) |  |
Accrued warranty obligations | (750,000) | (750,000) | (750,000) |  |
Other current liabilities | (1,175,000) | (1,166,000) | (1,175,000) |  |
Non-current liabilities | (160,000) | (160,000) | (160,000) |  |
Net tangible assets at preliminary fair value | 339,000 | 189,000 | 339,000 |  |
Deferred tax liabilities | (8,374,000) | (8,374,000) | (8,374,000) |  |
Goodwill | 13,905,000 | 13,987,000 | 13,905,000 |  |
Preliminary allocation of aggregate purchase price | 37,470,000 | 37,402,000 | 37,470,000 |  |
Measurement Period Adjustments |  |  |  |  |
Initial upfront payment |  |  | 77,000 |  |
Hold back amount |  |  | (9,000) |  |
Current assets |  |  | 123,000 |  |
Deferred tax assets |  |  | 27,000 |  |
Contract liabilities |  |  | 9,000 |  |
Other current liabilities |  |  | (9,000) |  |
Net tangible assets at preliminary fair value |  |  | 150,000 |  |
Goodwill |  |  | (82,000) |  |
Preliminary allocation of aggregate purchase price |  |  | 68,000 |  |
UHP | Technology |  |  |  |  |
Preliminary allocation of aggregate purchase price: |  |  |  |  |
Identifiable intangible assets | 15,300,000 | $ 15,300,000 | 15,300,000 |  |
Measurement Period Adjustments |  |  |  |  |
Estimated Useful Lives |  | 15 years |  |  |
UHP | Customer relationships |  |  |  |  |
Preliminary allocation of aggregate purchase price: |  |  |  |  |
Identifiable intangible assets | 15,500,000 | $ 15,500,000 | 15,500,000 |  |
Measurement Period Adjustments |  |  |  |  |
Estimated Useful Lives |  | 15 years |  |  |
UHP | Trade name |  |  |  |  |
Preliminary allocation of aggregate purchase price: |  |  |  |  |
Identifiable intangible assets | $ 800,000 | $ 800,000 | $ 800,000 |  |
Measurement Period Adjustments |  |  |  |  |
Estimated Useful Lives |  | 20 years |  |  |

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