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v3.19.2

Restricted Stock, Stock Options and Other Stock Plans - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Weighted-average remaining contractual term of unexercised stock options |  |  | 8 years |  |
Unrecognized compensation cost related to stock options and restricted stock awards | $ 0.8 |  | $ 0.8 |  | $ 0.3
Stock Options [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares issued by the company | 20,000 | 60,000 | 114,431 | 60,000 |
Restricted Stock Awards [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares issued by the company | 184,463 | 0 | 242,251 | 0 |

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