Share-Based Compensation - Additional Information (Detail) $ / shares in Units, $ in Millions					1 Months Ended							12 Months Ended
	May 29, 2024 shares	Oct. 05, 2023 shares	Aug. 17, 2021 shares	Jun. 28, 2017 shares	Sep. 30, 2024 shares	Dec. 31, 2023 shares	Sep. 30, 2023 shares	Jul. 31, 2023 shares	Dec. 31, 2022 shares	Sep. 30, 2022 shares	Jun. 30, 2020 shares	Dec. 31, 2024 USD ($) Installments Plan $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2019 shares	Mar. 11, 2019 shares	Oct. 18, 2017 shares	Oct. 17, 2017 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized for issuance												18,345,127
Common stock reserved for issuance												6,596,029
Common stock, shares/units issued						52,999,680						54,593,527	52,999,680
Aggregate intrinsic value of stock options exercised | $												$ 0.0	$ 0.0
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant-date fair value of awards granted | $ / shares												$ 1.12	$ 1.29
Total unrecognized compensation cost related to unvested share-based awards | $												$ 1.1
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense | $												$ 8.5
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Equal Monthly Installments | Installments												4
Share-based Compensation Arrangement by Share-based Payment Award, Right to Receive Share, Number												1
Vested and released												1,523,848
Weighted average grant-date fair value of awards granted | $ / shares												$ 1.54
Weighted average period												2 years 6 months
Performance-Based Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted shares in addition to stock option										140,000
Vested and released					69,999		70,001
2017 Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized for issuance				1,785,416												2,696,401	1,785,416
Number of shares to be incremented														607,324
Percentage of outstanding shares of common stock to be incremented														4.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	3,000,000	2,500,000								2,000,000
Number of equity compensation plans | Plan												2
Common stock, shares/units issued												5,707,847
2017 Plan [Member] | Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price per share of stock options as a percentage of fair market value of share of common stock				100.00%
2017 Plan [Member] | Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options vesting period				10 years
2019 Inducement Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized						500,000		250,000	875,000		700,000	500,000
Common stock reserved for issuance															331,500
Common stock, shares/units issued												888,182
Two Thousands And Seventeen Stock Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized			3,170,254