Stockholders' Equity - Additional Information (Detail)							1 Months Ended		3 Months Ended			9 Months Ended		12 Months Ended					15 Months Ended	19 Months Ended	24 Months Ended	33 Months Ended
	Jul. 26, 2023 USD ($)	Apr. 03, 2023 USD ($) $ / shares shares	Mar. 18, 2022 USD ($)	Jul. 28, 2021 USD ($)	Mar. 17, 2020 USD ($)	Sep. 28, 2017 USD ($) shares	May 31, 2015 USD ($) $ / shares shares	Feb. 28, 2014 Tranche $ / shares shares	Sep. 30, 2023 USD ($) $ / shares shares	Sep. 30, 2022 USD ($)	Dec. 31, 2017 USD ($) shares	Sep. 30, 2023 USD ($) $ / shares shares	Sep. 30, 2022 USD ($) shares	Dec. 31, 2022 $ / shares shares	Dec. 31, 2021 shares	Dec. 31, 2020 shares	Dec. 31, 2019 shares	Dec. 31, 2018 shares	Dec. 31, 2016 USD ($)	Sep. 30, 2023 $ / shares shares	Mar. 17, 2022 shares	Sep. 30, 2023 USD ($) $ / shares shares	Feb. 20, 2014 USD ($)
Equity [Line Items]
Preferred stock, shares authorized									10,000,000			10,000,000		10,000,000						10,000,000		10,000,000
Preferred stock, par value | $ / shares									$ 0.00001			$ 0.00001		$ 0.00001						$ 0.00001		$ 0.00001
Preferred stock, shares outstanding									0			0		0						0		0
Common stock, shares authorized									300,000,000			300,000,000		300,000,000						300,000,000		300,000,000
Common stock, par value | $ / shares									$ 0.00001			$ 0.00001		$ 0.00001						$ 0.00001		$ 0.00001
Number of common stock for issuance in exchange for future services from founders								1,000,000
Common stock price per share | $ / shares								$ 0.01
Number of tranches | Tranche								2
Unrecognized compensation expense | $							$ 62,000																$ 168,000
Common stock shares repurchased							633,810
Repurchase of common stock from stockholders, per share | $ / shares							$ 0.00001
Remaining number of repurchased shares							366,190
Common stock sold												0		0	0	0	0	0
Shares issued under ESPP												95,357	43,800
ATM Agreement [Member]
Equity [Line Items]
Gross proceeds from common stock issuance | $	$ 200,000,000
Shelf registration statement expiry date	Jul. 26, 2026
April 2023 Offering [Member]
Equity [Line Items]
Common stock sold		19,828,300
Proceeds from issuance of common stock net | $		$ 270,000,000
Offering price per share | $ / shares		$ 14.5
Sale of stock, shares issued		2,586,300
2021 Shelf Registration Statement [Member]
Equity [Line Items]
Maximum amount of Securities that can be offered | $				$ 600,000,000
Shelf registration statement expiry date				Jul. 26, 2023
Common Stock [Member]
Equity [Line Items]
Common stock sold												20,006,504
Repurchase of common stock (in shares)													2,193,251
Common Stock [Member] | ATM Agreement [Member]
Equity [Line Items]
Common stock sold																						1,587,404
Shelf registration statement expiry date				Jul. 26, 2023
Proceeds from issuance of common stock net | $																						$ 13,600,000
Repurchase Program [Member]
Equity [Line Items]
Repurchase of common stock (in shares)																					1,464,217
Stock repurchase program, additional maturity period					2 years
New Repurchase Program [Member]
Equity [Line Items]
Repurchase of common stock (in shares)																				729,034
Stock repurchase program, additional maturity period			2 years
Maximum [Member] | Repurchase Program [Member]
Equity [Line Items]
Purchase of common stock and warrants | $					$ 50,000,000.0
Maximum [Member] | New Repurchase Program [Member]
Equity [Line Items]
Purchase of common stock and warrants | $			$ 50,000,000.0
LPC [Member] | Commitment Purchase Agreement [Member] | Common Stock [Member] | Registration Rights Agreement [Member]
Equity [Line Items]
Common stock purchase agreement term						30 months
Common stock issued as consideration for commitment						100,000
Gross proceeds from common stock issuance | $											$ 802,000
Common stock sold											343,051
LPC [Member] | Maximum [Member] | Commitment Purchase Agreement [Member] | Common Stock [Member] | Registration Rights Agreement [Member]
Equity [Line Items]
Total of purchase agreement and potential aggregate future purchases | $						$ 15,000,000.0
Common stock to be sold, subject to certain limitations						75,000
Total purchase proceeds per purchase date, subject to certain limitations | $						$ 1,000,000.0
LPC [Member] | Minimum [Member] | Commitment Purchase Agreement [Member] | Common Stock [Member] | Registration Rights Agreement [Member]
Equity [Line Items]
Percentage of shares may not sell if it is beneficial owning						4.99%
Tranche One [Member]
Equity [Line Items]
Number of common stock for issuance in exchange for future services from founders								500,000
Remaining number of repurchased shares							183,095
Stock compensation expense | $									$ 0	$ 0		$ 0	$ 0						$ 31,000
Tranche Two [Member]
Equity [Line Items]
Number of common stock for issuance in exchange for future services from founders								500,000
Remaining number of repurchased shares							183,095