Common Stock - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands				3 Months Ended					9 Months Ended		19 Months Ended
	Jan. 24, 2022	Feb. 25, 2021	Jul. 16, 2020	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Dec. 31, 2021
Changes In Equity And Comprehensive Income Line Items [Line Items]
Warrants outstanding				1,015,166					1,015,166		1,015,166	2,776,191
Exercise price of warrants or rights				$ 0.66					$ 0.66		$ 0.66
Proceeds from issuance of common stock in public offering									$ 56,166	$ 52,356
Common stock, par or stated value per share				$ 0.0001					$ 0.0001		$ 0.0001	$ 0.0001
Pre-Funded Warrants [Member]
Changes In Equity And Comprehensive Income Line Items [Line Items]
Number of securities called by warrants or rights				760,870					760,870		760,870
Warrants outstanding				869,566					869,566		869,566
Exercise price of warrants or rights				$ 0.0001					$ 0.0001		$ 0.0001
Common Stock [Member]
Changes In Equity And Comprehensive Income Line Items [Line Items]
Shares of common stock sold				2,711,013	2,157,717	335,485	1,405,710	2,110,800
Exchange Warrants [Member]
Changes In Equity And Comprehensive Income Line Items [Line Items]
Shares of common stock sold	999,984
Number of securities called by warrants or rights		1,000,000
Warrants outstanding	0
Exercise price of warrants or rights		$ 0.0001
Common stock, par or stated value per share		$ 0.0001
Common stock exchanged for pre-funded warrants		1,000,000
Number of warrants exercised	1,000,000
Exchange Warrants [Member] | Exchanging Stockholders [Member]
Changes In Equity And Comprehensive Income Line Items [Line Items]
Ownership percentage		9.99%
Public Offering [Member]
Changes In Equity And Comprehensive Income Line Items [Line Items]
Gross proceeds from offering including exercise of underwriter's option			$ 132,200
Public Offering [Member] | Pre-Funded Warrants [Member]
Changes In Equity And Comprehensive Income Line Items [Line Items]
Number of securities called by warrants or rights			1,630,436
Exercise price of warrants or rights			$ 0.0001
Purchase price of warrants issued			$ 22.9999
Ownership percentage on exercise of warrants without notice, minimum			4.99%
Ownership percentage on exercise of warrants with notice, maximum			19.99%
Notice period to increase ownership percentage on exercise of warrants			61 days
Public Offering [Member] | Common Stock [Member]
Changes In Equity And Comprehensive Income Line Items [Line Items]
Shares of common stock sold			3,369,564
Public offering price, per share			$ 23.00
Over-Allotment Option [Member] | Common Stock [Member]
Changes In Equity And Comprehensive Income Line Items [Line Items]
Shares of common stock sold			750,000
Proceeds from issuance of common stock in public offering			$ 124,000
At-The-Market Offering [Member]
Changes In Equity And Comprehensive Income Line Items [Line Items]
Shares of common stock sold									5,204,415
Proceeds from issuance of common stock in public offering									$ 56,200
Issuance costs									1,900
At-The-Market Offering [Member] | Equity Distribution Agreement [Member]
Changes In Equity And Comprehensive Income Line Items [Line Items]
Commission and other offering costs				$ 300					$ 300		$ 300
Remaining shares available for issuance				0					0		0
At-The-Market Offering [Member] | Equity Distribution Agreement [Member] | Piper Sandler company and evercore group limited liability company and B Riley Securities inc [Member]
Changes In Equity And Comprehensive Income Line Items [Line Items]
Shares of common stock sold											10,004,869
Proceeds from issuance of common stock in public offering											$ 121,000
Common stock, par or stated value per share		$ 0.0001
Aggregate offering price		$ 125,000
Issuance costs											$ 4,000