Convertible Preferred Stock (Details) - USD ($)			3 Months Ended
	Oct. 19, 2021	Oct. 18, 2021	Oct. 31, 2022	Oct. 31, 2021	Jul. 31, 2022
Class of Stock [Line Items]
Series A convertible preferred stock, shares authorized (in shares)			125,000		125,000
Series A convertible preferred stock, par value per share (in dollars per share)			$ 0.10		$ 0.10
Convertible preferred stock, aggregate purchase price				$ 100,000,000
Issuance of convertible preferred stock	100,000			100,000
Optional repurchase trigger, percent		19.99%
Current redemption value			$ 106,914,000		$ 105,204,000
Convertible preferred stock, accrued dividends			576,000		$ 566,000
Green Shoe
Class of Stock [Line Items]
Long-term debt		$ 1,005,000
Convertible Preferred Stock
Class of Stock [Line Items]
Series A convertible preferred stock, shares authorized (in shares)		125,000
Series A convertible preferred stock, par value per share (in dollars per share)		$ 0.10
Convertible preferred stock, aggregate purchase price	$ 25,000,000	$ 125,000,000
Convertible preferred stock, aggregate purchase price, price per share (in dollars per share)		$ 1,000
Liquidation preference per share (in dollars per share)	$ 23.97	$ 1,000
Dividend rate, percent	6.50%
Dividend rate, per-dollar-amount, maximum (in dollars per share)	$ 0.10
Proceeds from initial issuance, net of issuance costs			4,007,000
Carrying amount, attributable to parent			100,000,000
Current redemption value			106,914,000
Dividend paid-in-kind			6,338,000
Convertible preferred stock, accrued dividends			576,000
Carrying value adjustment in the period			1,710,000
Convertible Preferred Stock | Green Shoe
Class of Stock [Line Items]
Liquidation preference per share (in dollars per share)	$ 31.21
IPO | Convertible Preferred Stock
Class of Stock [Line Items]
Convertible preferred stock, aggregate purchase price	$ 100,000,000
Green Shoe Option | Convertible Preferred Stock
Class of Stock [Line Items]
Carrying amount, attributable to parent			$ 25,000,000