Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	3 Months Ended				9 Months Ended	13 Months Ended
	Aug. 01, 2023	Jul. 12, 2022	Aug. 31, 2023	Jul. 31, 2023	Apr. 30, 2023	Jul. 31, 2022	Apr. 30, 2022	Jul. 31, 2023	Jul. 31, 2023	Sep. 11, 2023
Stockholders' Equity Note
Drew down to fully repay debt outstanding								$ 80,500
Common Stock
Stockholders' Equity Note
Stock issued during period shares new issues				37,931,204	949,438	7,814,115	19,896,904
Jefferies LLC, B. Riley Securities, Inc., Barclays Capital Inc., BMO Capital Markets Corp., BofA Securities, Inc., Canacord Genuity LLC, Citigroup Global Markets Inc., J.P. Morgan Securities LLC and Loop Capital Markets LLC | Common Stock
Stockholders' Equity Note
Gross proceeds from issuance of common stock								$ 88,000
Average sale price per share									$ 2.67
2022 Open Market Sale Agreement | Jefferies LLC, B. Riley Securities, Inc., Barclays Capital Inc., BMO Capital Markets Corp., BofA Securities, Inc., Canacord Genuity LLC, Citigroup Global Markets Inc., J.P. Morgan Securities LLC and Loop Capital Markets LLC
Stockholders' Equity Note
Percentage of sales commission		2.00%
2022 Open Market Sale Agreement | Jefferies LLC, B. Riley Securities, Inc., Barclays Capital Inc., BMO Capital Markets Corp., BofA Securities, Inc., Canacord Genuity LLC, Citigroup Global Markets Inc., J.P. Morgan Securities LLC and Loop Capital Markets LLC | Common Stock
Stockholders' Equity Note
Shares sold during the period				41,300,000				42,300,000	60,800,000
Stock issued during period shares new issues				37,900,000				38,900,000	57,400,000
Aggregate shares for offer				34,200,000				34,200,000	34,200,000
Gross proceeds from issuance of common stock				$ 85,100				$ 88,000	$ 155,000
Net proceeds from issuance of common stock				83,300				85,900	151,200
Payments of commissions				$ 1,800				$ 2,100	$ 3,800
Average sale price per share				$ 2.24				$ 2.26	$ 2.67
Shares remaining under the plan				37,600,000				37,600,000	37,600,000
2022 Open Market Sale Agreement | Jefferies LLC, B. Riley Securities, Inc., Barclays Capital Inc., BMO Capital Markets Corp., BofA Securities, Inc., Canacord Genuity LLC, Citigroup Global Markets Inc., J.P. Morgan Securities LLC and Loop Capital Markets LLC | Common Stock | Subsequent Event
Stockholders' Equity Note
Shares sold during the period	2,000,000.0
Gross proceeds from issuance of common stock	$ 4,300
Net proceeds from issuance of common stock	4,200
Payments of commissions	$ 100
Average sale price per share	$ 2.14
Shares remaining under the plan										32,200,000
2022 Open Market Sale Agreement | Jefferies LLC, B. Riley Securities, Inc., Barclays Capital Inc., BMO Capital Markets Corp., BofA Securities, Inc., Canacord Genuity LLC, Citigroup Global Markets Inc., J.P. Morgan Securities LLC and Loop Capital Markets LLC | Common Stock | Settled After Period End [Member}
Stockholders' Equity Note
Shares sold during the period								3,400,000
2022 Open Market Sale Agreement | Jefferies LLC, B. Riley Securities, Inc., Barclays Capital Inc., BMO Capital Markets Corp., BofA Securities, Inc., Canacord Genuity LLC, Citigroup Global Markets Inc., J.P. Morgan Securities LLC and Loop Capital Markets LLC | Common Stock | Settled After Period End [Member} | Subsequent Event
Stockholders' Equity Note
Stock issued during period shares new issues	3,400,000
Gross proceeds from issuance of common stock			$ 7,400
2022 Open Market Sale Agreement | Maximum | Jefferies LLC, B. Riley Securities, Inc., Barclays Capital Inc., BMO Capital Markets Corp., BofA Securities, Inc., Canacord Genuity LLC, Citigroup Global Markets Inc., J.P. Morgan Securities LLC and Loop Capital Markets LLC | Common Stock
Stockholders' Equity Note
Stock issued during period shares new issues		95,000,000.0