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Stock-Based Compensation - Additional Information (Detail) |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 21 Months Ended | 33 Months Ended | 45 Months Ended | 48 Months Ended |  |  |
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May 21, 2024 shares | May 20, 2024 shares | Jan. 04, 2024 Milestone shares | Jan. 31, 2024 Milestone shares | Jan. 31, 2023 Milestone shares | Jan. 31, 2022 Milestone shares | Jan. 31, 2021 Milestone shares | Jan. 31, 2020 Milestone shares | Sep. 30, 2024 USD ($) Milestone shares | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) Milestone Period $ / shares shares | Sep. 30, 2023 USD ($) shares | Sep. 30, 2024 USD ($) Milestone shares | Sep. 30, 2024 USD ($) Milestone shares | Sep. 30, 2024 USD ($) Milestone shares | Jan. 04, 2024 USD ($) Milestone | Jan. 01, 2024 shares | Dec. 31, 2023 shares | Apr. 28, 2015 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock reserved for issuance, description |  |  |  |  |  |  |  |  |  |  | ESPP. Initially, a total of 458,331 shares of the Company’s common stock were reserved for issuance pursuant to the 2014 ESPP. The 2014 ESPP provided that the number of shares available for issuance under the 2014 ESPP would, unless otherwise determined by the Company’s Board of Directors or the Compensation Committee, be automatically increased on January 1 of each year commencing on January 1, 2016 and ended on (and including) January 1, 2024, in an amount equal to 1% of the total number of shares of the Company’s common stock outstanding on December 31 of the preceding calendar year. The shares of common stock available for purchase pursuant to the 2014 ESPP were authorized but unissued shares of the Company’s common stock, shares of the Company’s common stock that the Company otherwise held in treasury or shares of the Company’s common stock that were purchased on the open market in arms’ length transactions in accordance with applicable securities laws. Shares of the Company’s common stock were offered for purchase under the 2014 ESPP as determined by the Compensation Committee through a series of successive offerings that each had a term of 24 months and consisted of four consecutive purchase periods of six months each. As of December 31, 2023, there were 4,251,444 shares of the Company’s common stock available for issuance and, effective January 1, 2024, an additional 1,001,137 shares of the Company’s common stock were added to the number of shares reserved for issuance under the 2014 ESPP in accordance with the terms of the 2014 ESPP. On May 20, 2024, 166,816 shares of the Company’s common stock were purchased by participants of the 2014 ESPP. |  |  |  |  |  |  |  |
Common stock, shares authorized |  |  |  |  |  |  |  |  | 300,000,000 |  | 300,000,000 |  | 300,000,000 | 300,000,000 | 300,000,000 |  |  | 300,000,000 |
Stock-based compensation | $ |  |  |  |  |  |  |  |  | $ 8,982,000 | $ 4,481,000 | $ 24,045,000 | $ 12,670,000 |  |  |  |  |  |  |
Forfeited awards |  |  |  |  |  |  |  |  |  |  | 12,250 |  |  |  |  |  |  |  |
Cash proceeds from option exercises and ESPP common stock issuances | $ |  |  |  |  |  |  |  |  |  |  | $ 9,813,000 | $ 6,580,000 |  |  |  |  |  |  |
Weighted average fair value of stock options granted to employees | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 16.22 |  |  |  |  |  |  |  |
Excess tax benefit from stock-based awards | $ |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |
Performance Based Restricted Stock Units [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Milestone achievement period |  |  |  | 4 years | 4 years | 4 years | 4 years | 4 years |  |  |  |  |  |  |  |  |  |  |
Issuance of performance based award |  |  |  | 677,500 | 920,000 | 657,000 | 205,500 | 244,000 |  |  |  |  |  |  |  |  |  |  |
Percentage of shares vested upon achievement of certain milestone |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |
Number of milestones to be achieve | Milestone |  |  |  |  |  |  |  | 3 |  |  |  |  |  |  |  |  |  |  |
Performance Based Restricted Stock Units [Member] | PRSU Awards Vesting Upon the Achievement of Three of the Milestones Over a Four Year Period [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of shares vested upon achievement of certain milestone |  |  |  | 100.00% | 100.00% | 100.00% | 100.00% |  |  |  |  |  |  |  |  |  |  |  |
Number of milestones to be achieve | Milestone |  |  |  | 3 | 3 | 3 | 3 |  |  |  |  |  |  |  |  |  |  |  |
Performance Based Restricted Stock Units [Member] | PRSU Awards Vesting Upon the Achievement of All Four of the Milestones Over a Four Year Period [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of shares vested upon achievement of certain milestone |  |  |  | 133.30% | 133.30% | 133.30% | 133.30% |  |  |  |  |  |  |  |  |  |  |  |
Number of milestones to be achieve | Milestone |  |  |  | 4 | 4 | 4 | 4 |  |  |  |  |  |  |  |  |  |  |  |
Performance Based Restricted Stock Units [Member] | January 2020 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,200,000 |  |  |
Forfeited awards |  |  | 10,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of milestones achieved | Milestone |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |
Cancelled awards |  |  | 77,834 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Performance Based Restricted Stock Units [Member] | January 2021 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation | $ |  |  |  |  |  |  |  |  |  |  | $ (191,000) |  |  |  | $ 800,000 |  |  |  |
Forfeiture of performance based award |  |  |  |  |  |  |  |  |  |  | 10,000 |  |  |  |  |  |  |  |
Performance Based Restricted Stock Units [Member] | January 2022 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of milestones deemed as achievable | Milestone |  |  |  |  |  |  |  |  | 1 |  | 1 |  | 1 | 1 | 1 |  |  |  |
Stock-based compensation | $ |  |  |  |  |  |  |  |  |  |  | $ (709,000) |  |  | $ 3,200,000 |  |  |  |  |
Number of milestones achieved | Milestone |  |  |  |  |  |  |  |  | 3 |  | 3 |  | 3 | 3 | 3 |  |  |  |
Forfeiture of performance based award |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |
Performance Based Restricted Stock Units [Member] | January 2023 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of milestones deemed as achievable | Milestone |  |  |  |  |  |  |  |  | 2 |  | 2 |  | 2 | 2 | 2 |  |  |  |
Stock-based compensation | $ |  |  |  |  |  |  |  |  |  |  | $ 2,900,000 |  | $ 7,900,000 |  |  |  |  |  |
Number of milestones achieved | Milestone |  |  |  |  |  |  |  |  | 2 |  | 2 |  | 2 | 2 | 2 |  |  |  |
Forfeiture of performance based award |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |
Performance Based Restricted Stock Units [Member] | January 2024 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of milestones deemed as achievable | Milestone |  |  |  |  |  |  |  |  | 3 |  | 3 |  | 3 | 3 | 3 |  |  |  |
Stock-based compensation | $ |  |  |  |  |  |  |  |  |  |  | $ 9,500,000 |  |  |  |  |  |  |  |
Number of milestones achieved | Milestone |  |  |  |  |  |  |  |  | 1 |  | 1 |  | 1 | 1 | 1 |  |  |  |
Forfeiture of performance based award |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |
2014 Equity Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock reserved for issuance, description |  |  |  |  |  |  |  |  |  |  | Initially, a total of 1,527,770 shares of the Company’s common stock were reserved for issuance pursuant to the 2014 Plan. The 2014 Plan provided that the number of shares available for issuance under the 2014 Plan would, unless otherwise determined by the Company’s Board of Directors or the Compensation Committee, be automatically increased on January 1 of each year commencing on January 1, 2016 and ended on (and including) January 1, 2024, in an amount equal to 3.5% of the total number of shares of the Company’s common stock outstanding on December 31 of the preceding calendar year. |  |  |  |  |  |  |  |
Percentage of common stock outstanding to increase shares reserved for issuance |  |  |  |  |  |  |  |  |  |  | 3.50% |  |  |  |  |  |  |  |
Common stock reserved for future issuance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,939,750 | 1,527,770
Additional number of shares of common stock reserved for issuance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,503,981 |  |
2024 Equity Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized | 12,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2024 Equity Incentive Plan [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common shares available for grant | 7,674,614 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2014 ESPP [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of common stock outstanding to increase shares reserved for issuance |  |  |  |  |  |  |  |  |  |  | 1.00% |  |  |  |  |  |  |  |
Common stock reserved for future issuance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,251,444 | 458,331
Additional number of shares of common stock reserved for issuance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,001,137 |  |
Duration of employee stock purchase plan as determined by the compensation committee |  |  |  |  |  |  |  |  |  |  | 24 months |  |  |  |  |  |  |  |
Duration for offering period, employee stock purchase plan |  |  |  |  |  |  |  |  |  |  | 6 months |  |  |  |  |  |  |  |
Employee stock purchase plan, number of purchase periods | Period |  |  |  |  |  |  |  |  |  |  | 4 |  |  |  |  |  |  |  |
Shares issued under ESPP |  | 166,816 |  |  |  |  |  |  |  |  | 166,816 | 95,357 |  |  |  |  |  |  |
2024 ESPP [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Duration of employee stock purchase plan as determined by the compensation committee |  |  |  |  |  |  |  |  |  |  | 24 months |  |  |  |  |  |  |  |
Duration for offering period, employee stock purchase plan |  |  |  |  |  |  |  |  |  |  | 6 months |  |  |  |  |  |  |  |
Employee stock purchase plan, number of purchase periods | Period |  |  |  |  |  |  |  |  |  |  | 4 |  |  |  |  |  |  |  |
Maximum duration for purchase under employee stock purchase plan |  |  |  |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |  |  |
Maximum duration of employee stock purchase plan |  |  |  |  |  |  |  |  |  |  | 27 months |  |  |  |  |  |  |  |
Percentage of purchase of common stock |  |  |  |  |  |  |  |  |  |  | 85.00% |  |  |  |  |  |  |  |
Percentage of common stock on the date of purchase |  |  |  |  |  |  |  |  |  |  | 85.00% |  |  |  |  |  |  |  |
Shares issued under ESPP | 5,500,000 |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  |  |  |  |  |

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