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v3.21.1

Restricted Stock, Stock Options and Other Stock Plans - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Weighted-average remaining contractual term of unexercised stock options (in years) | 5 years |  |
Unrecognized compensation cost related to stock options and restricted stock awards | $ 1.4 |  | $ 1.1
Stock options |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares issued by the company (in shares) | 0 | 0 |
Restricted stock awards |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares issued by the company (in shares) | 165,809 | 630,352 |

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