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Summary of Significant Accounting Policies - Schedule of Common Share Equivalents Included from Computation of Net Loss Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share [Abstract]
Net loss	$ (10,471)	$ (9,817)	$ (29,582)	$ (25,700)
Net loss per share, basic	$ (0.73)	$ (0.66)	$ (2.07)	$ (1.73)
Net loss per share, diluted	$ (0.73)	$ (0.66)	$ (2.07)	$ (1.73)
Weighted-average number of common shares, basic	14,265,905	14,815,852	14,289,729	14,820,822
Weighted-average number of common shares, diluted	14,265,905	14,815,852	14,289,729	14,820,822

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-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 10
-URI https://asc.fasb.org/extlink&oid=126958026&loc=d3e1448-109256

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