Condensed Consolidated Statements of Convertible Preferred Stock and Stockholders' Equity - USD ($)	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock
Beginning Balance (in shares) at Jul. 31, 2022	100,000
Beginning Balance at Jul. 31, 2022	$ 105,204,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Convertible preferred stock issuance costs	0
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends)	$ (3,447,000)
Ending Balance (in shares) at Jan. 31, 2023	100,000
Ending Balance at Jan. 31, 2023	$ 108,651,000
Beginning balance (in shares) at Jul. 31, 2022		42,672,827
Beginning balance (in shares) at Jul. 31, 2022					15,033,317
Beginning balance at Jul. 31, 2022	466,585,000	$ 4,267,000	$ 625,484,000	$ 278,683,000	$ (441,849,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity-classified stock award compensation	2,172,000		2,172,000
CEO transition costs related to equity-classified stock-based awards	3,764,000		3,764,000
Issuance of employee stock purchase plan shares (in shares)		29,460
Issuance of employee stock purchase plan shares	207,000	$ 3,000	204,000
Issuance of restricted stock (in shares)		93,091
Issuance of restricted stock, net of forfeiture	0	$ 9,000	(9,000)
Net settlement of stock-based awards (in shares)		105,493
Net settlement of stock-based awards	(1,371,000)	$ 11,000	(1,382,000)
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends)	(3,447,000)			(3,447,000)
Cash dividends declared, net	(5,549,000)			(5,549,000)
Accrual of dividend equivalents, net of reversal	(364,000)			(364,000)
Net loss	(15,901,000)			(15,901,000)
Ending balance (in shares) at Jan. 31, 2023		42,900,871
Ending balance (in shares) at Jan. 31, 2023					15,033,317
Ending balance at Jan. 31, 2023	$ 446,096,000	$ 4,290,000	630,233,000	253,422,000	$ (441,849,000)
Beginning Balance (in shares) at Oct. 31, 2022	100,000
Beginning Balance at Oct. 31, 2022	$ 106,914,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Convertible preferred stock issuance costs	0
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends)	$ (1,737,000)
Ending Balance (in shares) at Jan. 31, 2023	100,000
Ending Balance at Jan. 31, 2023	$ 108,651,000
Beginning balance (in shares) at Oct. 31, 2022		42,810,846
Beginning balance (in shares) at Oct. 31, 2022					15,033,317
Beginning balance at Oct. 31, 2022	454,361,000	$ 4,281,000	629,027,000	262,902,000	$ (441,849,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity-classified stock award compensation	1,268,000		1,268,000
Issuance of employee stock purchase plan shares (in shares)		14,443
Issuance of employee stock purchase plan shares	88,000	$ 1,000	87,000
Issuance of restricted stock (in shares)		82,373
Issuance of restricted stock, net of forfeiture	0	$ 8,000	(8,000)
Net settlement of stock-based awards (in shares)		(6,791)
Net settlement of stock-based awards	(141,000)	$ 0	(141,000)
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends)	(1,737,000)			(1,737,000)
Cash dividends declared, net	(2,775,000)			(2,775,000)
Accrual of dividend equivalents, net of reversal	(163,000)			(163,000)
Net loss	(4,805,000)			(4,805,000)
Ending balance (in shares) at Jan. 31, 2023		42,900,871
Ending balance (in shares) at Jan. 31, 2023					15,033,317
Ending balance at Jan. 31, 2023	$ 446,096,000	$ 4,290,000	630,233,000	253,422,000	$ (441,849,000)
Beginning Balance (in shares) at Jul. 31, 2023	100,000
Beginning Balance at Jul. 31, 2023	$ 112,211,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Extinguishment of convertible preferred stock (in shares)	(100,000)
Extinguishment of convertible preferred stock	$ (115,721,000)
Issuance of convertible preferred stock	166,121
Issuance of convertible preferred stock	$ 166,121,000
Convertible preferred stock issuance costs	(4,273,000)
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends)	$ 8,157,000
Ending Balance (in shares) at Jan. 31, 2024	166,121
Ending Balance at Jan. 31, 2024	$ 166,495,000
Beginning balance (in shares) at Jul. 31, 2023	43,096,271	43,096,271
Beginning balance (in shares) at Jul. 31, 2023	15,033,317				15,033,317
Beginning balance at Jul. 31, 2023	$ 438,299,000	$ 4,310,000	636,925,000	238,913,000	$ (441,849,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity-classified stock award compensation	4,834,000		4,834,000
Issuance of employee stock purchase plan shares (in shares)		24,117
Issuance of employee stock purchase plan shares	176,000	$ 2,000	174,000
Issuance of restricted stock (in shares)		(2,686)
Issuance of restricted stock, net of forfeiture	0	$ 0	0
Net settlement of stock-based awards (in shares)		388,587
Net settlement of stock-based awards	(2,594,000)	$ 39,000	(2,633,000)
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends)	(8,157,000)			(8,157,000)
Reversal of dividend equivalents	36,000			36,000
Net loss	$ (11,995,000)			(11,995,000)
Ending balance (in shares) at Jan. 31, 2024	43,506,289	43,506,289
Ending balance (in shares) at Jan. 31, 2024	15,033,317				15,033,317
Ending balance at Jan. 31, 2024	$ 406,959,000	$ 4,351,000	639,300,000	205,157,000	$ (441,849,000)
Beginning Balance (in shares) at Oct. 31, 2023	100,000
Beginning Balance at Oct. 31, 2023	$ 114,034,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Extinguishment of convertible preferred stock (in shares)	(100,000)
Extinguishment of convertible preferred stock	$ (115,721,000)
Issuance of convertible preferred stock	166,121
Issuance of convertible preferred stock	$ 166,121,000
Convertible preferred stock issuance costs	(4,273,000)
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends)	$ (6,334,000)
Ending Balance (in shares) at Jan. 31, 2024	166,121
Ending Balance at Jan. 31, 2024	$ 166,495,000
Beginning balance (in shares) at Oct. 31, 2023		43,268,782
Beginning balance (in shares) at Oct. 31, 2023					15,033,317
Beginning balance at Oct. 31, 2023	436,806,000	$ 4,327,000	638,652,000	235,676,000	$ (441,849,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity-classified stock award compensation	2,189,000		2,189,000
Issuance of employee stock purchase plan shares (in shares)		11,318
Issuance of employee stock purchase plan shares	82,000	$ 1,000	81,000
Issuance of restricted stock (in shares)		(16,590)
Issuance of restricted stock, net of forfeiture	0	$ (2,000)	2,000
Net settlement of stock-based awards (in shares)		242,779
Net settlement of stock-based awards	(1,599,000)	$ 25,000	(1,624,000)
Extinguishment of convertible preferred stock	(13,640,000)			(13,640,000)
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends)	(6,334,000)			(6,334,000)
Reversal of dividend equivalents	13,000			13,000
Net loss	$ (10,558,000)			(10,558,000)
Ending balance (in shares) at Jan. 31, 2024	43,506,289	43,506,289
Ending balance (in shares) at Jan. 31, 2024	15,033,317				15,033,317
Ending balance at Jan. 31, 2024	$ 406,959,000	$ 4,351,000	$ 639,300,000	$ 205,157,000	$ (441,849,000)