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Accrued Expenses and Other Current Liabilities
9 Months Ended
Apr. 30, 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:
 April 30, 2024July 31, 2023
Accrued wages and benefits$18,060,000 21,994,000 
Accrued contract costs21,395,000 19,041,000 
Accrued warranty obligations6,992,000 8,285,000 
Accrued commissions and royalties4,948,000 4,659,000 
Accrued legal costs2,800,000 688,000 
Other10,674,000 12,323,000 
Accrued expenses and other current liabilities$64,869,000 66,990,000 

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 April 30, 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 nine months ended April 30, 2024 and 2023 were as follows:
Nine months ended April 30,
 20242023
Balance at beginning of period$8,285,000 9,420,000 
Provision for warranty obligations768,000 1,756,000 
Adjustments for changes in estimates(393,000)(1,500,000)
Charges incurred(1,250,000)(1,436,000)
PST Divestiture(418,000)— 
Balance at end of period$6,992,000 8,240,000