Net Loss Per Share - Additional Information (Detail) - ATM Program [Member] - USD ($) $ in Millions	1 Months Ended	12 Months Ended
Jan. 31, 2021	Dec. 31, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Issuance of common stock, Shares		732,752
Subsequent Event [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Issuance of common stock, Shares	450,000
Proceeds from issuance of common stock	$ 7.1

Number of new stock issued during the period.

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-Name Accounting Standards Codification
-Topic 210
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Balance Type:	na
Period Type:	duration