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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2015 | Jan. 01, 2024 | Nov. 20, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Intrinsic value of options exercised | $ 0 | $ 476 | $ 118 |  |  |
Options granted | 253,760 |  |  |  |  |
Excess tax benefits from stock option activity or stock-based compensation expense recognized in cash flows from operations | $ 0 | $ 0 | $ 0 |  |  |
Board of Directors Chairman [Member] | Restricted Stock Units |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Awarded |  |  | 990 |  |  |
2014 Equity 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 shares authorized |  | 1,016,919 |  |  | 1,153,120 |
Number of stock options that may be granted after the tenth anniversary of the 2014 Plan | 0 |  |  |  |  |
Annual increases in number of shares reserved for issuance as a percentage of shares of capital stock outstanding through January 1, 2024 |  |  |  | 3.00% |  |
2014 Equity Incentive Plan [Member] | Maximum [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Term of awards granted | 10 years |  |  |  |  |
2014 Equity Incentive Plan [Member] | Maximum [Member] | Incentive Stock Options [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, number of shares authorized |  |  |  | 2,500,000 |  |
2014 Equity Incentive Plan [Member] | Director [Member] | Incentive Stock Options [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period of awards granted | 3 years |  |  |  |  |
2014 Equity Incentive Plan [Member] | Employee And Nonemployee Consultants [Member] | Restricted Stock Units |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Awarded | 75,323 | 50,098 | 39,517 |  |  |
2014 Equity Incentive Plan [Member] | Employee And Nonemployee Consultants [Member] | Share-Based Compensation Award, Tranche One [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Percentage of vested shares on first anniversary of grant date | 25.00% |  |  |  |  |
2014 Equity Incentive Plan [Member] | Employee And Nonemployee Consultants [Member] | Share-based Compensation Award, Tranche Two [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period of awards granted | 36 months |  |  |  |  |
2014 Equity Incentive Plan [Member] | Employee And Nonemployee Consultants [Member] | Share Based Compensation Subsequent Awards [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period of awards granted | 4 years |  |  |  |  |
2014 Equity Incentive Plan [Member] | Employees And Non-Employee Members Of Board Of Directors [Member] | Employee Stock Option |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Fair value of options granted | $ 7.92 | $ 69 | $ 87 |  |  |
Options granted | 253,760 | 167,056 | 158,327 |  |  |
Compensation expense not yet recognized | $ 4,146 |  |  |  |  |
Weighted average period of compensation expense not yet recognized | 10 months 2 days |  |  |  |  |
2014 Equity Incentive Plan [Member] | Employees And Non-Employee Members Of Board Of Directors [Member] | Restricted Stock Units |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Awarded | 75,323 |  |  |  |  |
Restricted stock units, grant date fair value | $ 7.92 | $ 93.72 | $ 121.2 |  |  |
Restricted stock units, vested | 31,170 |  |  |  |  |
2014 Equity Incentive Plan [Member] | Consultants | Employee Stock Option | Nonemployee |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Options granted | 0 | 0 | 0 |  |  |
2019 Inducement Plan [Member] | Incentive Stock Options [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Options granted | 0 | 0 | 0 |  |  |
2019 Inducement Plan [Member] | Restricted Stock Units |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Awarded | 0 | 0 | 0 |  |  |
2019 Inducement Plan [Member] | Share-Based Compensation Award, Tranche One [Member] | Share-based Payment Arrangement, Employee [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Percentage of vested shares on first anniversary of grant date | 25.00% |  |  |  |  |
2019 Inducement Plan [Member] | Share-based Compensation Award, Tranche Two [Member] | Share-based Payment Arrangement, Employee [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period of awards granted | 36 months |  |  |  |  |
2019 Inducement Plan [Member] | Share Based Compensation Subsequent Awards [Member] | Share-based Payment Arrangement, Employee [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period of awards granted | 4 years |  |  |  |  |
2019 Inducement Plan [Member] | Maximum [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, number of shares authorized |  |  |  |  |  | 25,000

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