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Accrued Expenses and Other Current Liabilities
 3 Months Ended
Oct. 31, 2023
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, 2023July 31, 2023
Accrued wages and benefits$18,804,000 21,994,000 
Accrued contract costs11,182,000 19,041,000 
Accrued warranty obligations9,250,000 8,285,000 
Accrued commissions and royalties4,539,000 4,659,000 
Accrued legal costs794,000 688,000 
Other13,108,000 12,323,000 
Accrued expenses and other current liabilities$57,677,000 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 October 31, 2023 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, 2023 and 2022 were as follows:
Three months ended October 31,
 20232022
Balance at beginning of period$8,285,000 9,420,000 
Provision for (benefit from) warranty obligations1,694,000 409,000 
Charges incurred(311,000)(435,000)
Reclassification to liabilities of disposal group held for sale (1)
(418,000)— 
Balance at end of period$9,250,000 9,394,000 
(1) Represents the reclassification of accrued warranty to liabilities held for sale due to an agreement to sell the PST disposal group. See Note (2) - "Business Divestiture" for additional information.