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Equity - Additional Information (Detail) - USD ($) $ in Thousands |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 11, 2020 | Jun. 30, 2018 | Dec. 31, 2016 | Dec. 31, 2020 | Dec. 31, 2019
Class Of Stock [Line Items] |  |  |  |  |
Common Stock, shares authorized |  |  |  | 55,000,000 | 55,000,000
Preferred stock, shares authorized |  |  |  | 4,991,000 |
Common Stock, shares issued |  |  |  | 32,921,341 | 32,674,354
Common Stock, shares outstanding |  |  |  | 32,921,341 | 32,674,354
Preferred stock, shares issued |  |  |  | 0 |
Preferred stock, shares outstanding |  |  |  | 0 |
Stock repurchase program period |  |  | 3 years |  |
Stock repurchase program, authorized amount |  |  | $ 100,000 |  |
Authorized increase and extension in stock repurchase program amount |  | $ 300,000 |  |  |
Stock repurchase program extended expiration date |  | 2020-12 |  |  |
Shares repurchased |  |  |  | 9,092 |
Remaining authorized repurchase amount |  |  |  | $ 74,226 |
2020 Stock Repurchase Program |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |
Stock repurchase program period | 3 years |  |  |  |
Stock repurchase program expiration date | Dec. 15, 2023 |  |  |  |
Maximum |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |
Shares issued |  |  |  | 59,991,000 |
Maximum | 2020 Stock Repurchase Program |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |
Stock repurchase program, authorized to repurchase amount | 150,000,000 |  |  |  |

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