Fair Value Measurements and Marketable Securities - Summary of Financial Assets and Liabilities Measured at Fair Value Recurring Basis (Detail) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Cash equivalents:
Total cash equivalents	$ 900	$ 600
Fair Value, Measurements, Recurring [Member]
Cash equivalents:
Total cash equivalents	49,569	112,017
Marketable securities:
Total marketable securities		33,818
Total cash equivalents and marketable securities	49,569	145,835
Derivative liability	141	802
Derivative liabilities	141	802
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Cash equivalents:
Total cash equivalents	0	0
Marketable securities:
Total marketable securities		0
Total cash equivalents and marketable securities	0	0
Derivative liability	0	0
Derivative liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Cash equivalents:
Total cash equivalents	49,569	112,017
Marketable securities:
Total marketable securities		33,818
Total cash equivalents and marketable securities	49,569	145,835
Derivative liability	0	0
Derivative liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Cash equivalents:
Total cash equivalents	0	0
Marketable securities:
Total marketable securities		0
Total cash equivalents and marketable securities	0	0
Derivative liability	141	802
Derivative liabilities	141	802
Fair Value, Measurements, Recurring [Member] | Money Market Funds [Member]
Cash equivalents:
Total cash equivalents	49,569	109,316
Fair Value, Measurements, Recurring [Member] | Money Market Funds [Member] | Level 1 [Member]
Cash equivalents:
Total cash equivalents	0	0
Fair Value, Measurements, Recurring [Member] | Money Market Funds [Member] | Level 2 [Member]
Cash equivalents:
Total cash equivalents	49,569	109,316
Fair Value, Measurements, Recurring [Member] | Money Market Funds [Member] | Level 3 [Member]
Cash equivalents:
Total cash equivalents	$ 0	0
Fair Value, Measurements, Recurring [Member] | Commercial Paper [Member]
Marketable securities:
Total marketable securities		22,339
Fair Value, Measurements, Recurring [Member] | Commercial Paper [Member] | Level 1 [Member]
Marketable securities:
Total marketable securities		0
Fair Value, Measurements, Recurring [Member] | Commercial Paper [Member] | Level 2 [Member]
Marketable securities:
Total marketable securities		22,339
Fair Value, Measurements, Recurring [Member] | Commercial Paper [Member] | Level 3 [Member]
Marketable securities:
Total marketable securities		0
Fair Value, Measurements, Recurring [Member] | Corporate Bonds [Member]
Cash equivalents:
Total cash equivalents		2,701
Marketable securities:
Total marketable securities		11,479
Fair Value, Measurements, Recurring [Member] | Corporate Bonds [Member] | Level 1 [Member]
Cash equivalents:
Total cash equivalents		0
Marketable securities:
Total marketable securities		0
Fair Value, Measurements, Recurring [Member] | Corporate Bonds [Member] | Level 2 [Member]
Cash equivalents:
Total cash equivalents		2,701
Marketable securities:
Total marketable securities		11,479
Fair Value, Measurements, Recurring [Member] | Corporate Bonds [Member] | Level 3 [Member]
Cash equivalents:
Total cash equivalents		0
Marketable securities:
Total marketable securities		$ 0