Accounts Receivable (Tables)

9 Months Ended

Apr. 30, 2025

Receivables [Abstract]

Accounts receivable

Accounts receivable consist of the following at:

	April 30, 2025		July 31, 2024
Receivables from commercial and international customers	$	59,936,000	53,108,000
Unbilled receivables from commercial and international customers	70,030,000		72,540,000
Receivables from the U.S. government and its agencies	21,110,000		20,682,000
Unbilled receivables from the U.S. government and its agencies	19,912,000		51,197,000
Total accounts receivable	170,988,000		197,527,000
Less allowance for doubtful accounts	19,516,000		1,932,000
Accounts receivable, net	$	151,472,000	195,595,000