CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jan. 31, 2024	Jul. 31, 2023
Accounts receivable, trade, allowance for doubtful accounts	$ 216	$ 219
Preferred stock, par value (in usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	4,965,000	4,965,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,400,000,000	1,400,000,000
Common stock, shares issued (in shares)	6,285,591	6,250,493
Common stock, shares outstanding (in shares)	6,285,591	6,250,493
Series C Contingently Redeemable Preferred Stock
Preferred stock, par value (in usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	35,000	35,000
Preferred stock, shares issued (in shares)	35,000	35,000
Preferred stock, shares outstanding (in shares)	35,000	35,000
Series E Contingently Redeemable Preferred Stock
Preferred stock, par value (in usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	3,500,000	3,500,000
Preferred stock, shares issued (in shares)	3,500,000	3,500,000
Preferred stock, shares outstanding (in shares)	3,500,000	3,500,000