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Accrued Expenses and Other Current Liabilities
 3 Months Ended
Oct. 31, 2024
Payables and Accruals [Abstract]  
Accrued Expenses and Other Current Liabilities Accrued Expenses and Other Current Liabilities
Accrued expenses and other current liabilities consist of the following at:
 October 31, 2024July 31, 2024
Accrued wages and benefits$18,612,000 22,131,000 
Accrued contract costs11,498,000 17,267,000 
Accrued warranty obligations7,849,000 7,049,000 
Accrued commissions and royalties5,243,000 5,396,000 
Accrued legal costs3,491,000 3,092,000 
Other9,691,000 7,310,000 
Accrued expenses and other current liabilities$56,384,000 62,245,000 

Accrued contract costs represent direct and indirect costs on contracts as well as estimates of amounts owed for invoices not yet received from vendors or reflected in accounts payable.

Accrued warranty obligations as of October 31, 2024 relate to estimated liabilities for assurance type warranty coverage that we provide to our customers. We generally provide warranty coverage for some of our products for a period of at least one year from the date of delivery. We record a liability for estimated warranty expense based on historical claims, product failure rates, consideration of contractual obligations, future costs to resolve software issues and other factors. Some of our product warranties are provided under long-term contracts, the costs of which are incorporated into our estimates of total contract costs.

Changes in our accrued warranty obligations during the three months ended October 31, 2024 and 2023 were as follows:
Three months ended October 31,
 20242023
Balance at beginning of period$7,049,000 8,285,000 
Provision for warranty obligations1,168,000 1,694,000 
Charges incurred(368,000)(311,000)
PST Divestiture— (418,000)
Balance at end of period$7,849,000 9,250,000