Borrowings - Mann Group Promissory Notes - Additional Information (Detail) $ / shares in Units, $ in Thousands		1 Months Ended			3 Months Ended			9 Months Ended		12 Months Ended
		Apr. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Aug. 31, 2019 USD ($) $ / shares	Sep. 30, 2022 USD ($) shares	Jun. 30, 2022 USD ($) shares	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) shares	Sep. 30, 2021 USD ($) shares	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Principal amount					$ 278,800			$ 278,800
Maturity date		Dec. 31, 2025		Nov. 03, 2024
Gain (loss) on extinguishment of debt, net							$ 4,930		$ (17,200)
Debt issuance amount			$ 230,000
Interest paid					2,812		$ 2,803	12,202	12,435
Mann Group | Convertible Promissory Note
Debt Instrument [Line Items]
Principal amount					$ 8,800			$ 8,800		$ 18,400
Debt instrument, interest rate, stated percentage	[1]				2.50%			2.50%
Repayments of debt		$ 35,100
Debt issuance amount						$ 10,000		$ 10,000	$ 9,600
Capitalized interest into common stock | shares						4,000,000		4,000,000	4,000,000
Common stock issued to pay interest | shares					25,950	31,541		57,491
Interest paid								$ 200
Conversion of notes accrued interest to common shares, value									$ 400
Mann Group | Promissory Notes
Debt Instrument [Line Items]
Debt instrument fair value in excess of face amount										18,400
Gain (loss) on extinguishment of debt, net										(22,100)
Debt premium recognized in additional paid-in capital										$ 22,100
Mann Group | New Loan Arrangement | Convertible Promissory Note
Debt Instrument [Line Items]
No of convertible shares				400
Principal amount per share | $ / shares				$ 1,000
Conversion price of shares | $ / shares				$ 2.50
Mann Group | New Loan Arrangement | Promissory Notes
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage		2.50%		7.00%
Debt instrument payment term description				quarterly
Debt instrument, date of first required interest payment				Oct. 01, 2019
Mann Group | Privately Negotiated Exchange Agreement | Loan Arrangement
Debt Instrument [Line Items]
Common stock price per share | $ / shares				$ 2.50
Mann Group | Privately Negotiated Exchange Agreement | Loan Arrangement | Convertible Promissory Note
Debt Instrument [Line Items]
Principal amount				$ 35,000
Mann Group | Privately Negotiated Exchange Agreement | Loan Arrangement | Non-Convertible Note
Debt Instrument [Line Items]
Principal amount				$ 35,100

[1] In April 2021, the Mann Group convertible note was amended. The interest rate prior to and after the amendment was 7.00% and the maturity date was in November 2024.