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Stock Based Compensation - Additional Information (Detail) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2016
Performance Based Stock Options |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of Shares, Granted | 0 | 0 |
Restricted Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of years of service before cliff vesting | 3 years | 3 years |
Weighted Average Grant-Date Fair Value, Granted | $ 17.34 | $ 19.97 |
Unamortized Stock-Based Compensation | $ 9,238,000 | $ 7,956,000 |
Remaining Weighted Average Period (years) | 2 years 4 months 24 days | 2 years |
Number of Shares, Granted | 290,679 | 254,972 |
Restricted Stock | Common Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares issued by equity investee | 290,679 | 254,972 |
Weighted Average Grant-Date Fair Value, Granted | $ 17.34 | $ 19.97 |
Unvested Restricted Stock |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Unamortized Stock-Based Compensation | $ 9,238,000 |  |
Remaining Weighted Average Period (years) | 2 years 4 months 24 days |  |
Performance Based Restricted Shares |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Weighted Average Grant-Date Fair Value, Granted | $ 16.47 | $ 18.79 |
Unamortized Stock-Based Compensation | $ 4,524,000 | $ 3,562,000 |
Remaining Weighted Average Period (years) | 2 years 4 months 24 days | 2 years 4 months 24 days |
Number of Shares, Granted | 137,557 | 122,446 |
Targeted performance percentage | 200.00% | 200.00% | 200.00%
Target performance percentage to meet performance incentive stock options based on market | 125.00% |  |
Additional expenses recognized | $ 0 |  |
Additional shares based on performance achievement | 41,568 |  |
Performance Based Restricted Shares | Vested on March 9, 2021 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Cliff vesting date | Mar. 28, 2022 | Mar. 09, 2021 |
Performance Based Restricted Shares | Performance based stock options based upon financial performance of earnings before interest and tax ("EBIT") and net sales goal for the period commencing January 1, 2018 through December 31, 2020 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Percentage of shares vesting based on Performance | 80.00% |  |
Earnings before income tax goal weight, percentage | 50.00% |  |
Net sales goal weight, percentage | 30.00% |  |
Performance Based Restricted Shares | Performance Based Shares Based Upon AVD Stock Price Appreciation Over the Course of the Period Commencing January 1, 2018 through December 31, 2020 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Earnings before income tax goal weight, percentage | 20.00% |  |
Performance Based Restricted Shares | Performance based stock options based upon financial performance of earnings before interest and tax ("EBIT") and net sales goal for the period commencing January 1, 2017 through December 31, 2019 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Percentage of shares vesting based on Performance |  | 80.00% |
Earnings before income tax goal weight, percentage |  | 50.00% |
Net sales goal weight, percentage |  | 30.00% |
Performance Based Restricted Shares | Performance Based Shares Based Upon AVD Stock Price Appreciation Over the Course of the Period Commencing January 1, 2017 through December 31, 2019 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Earnings before income tax goal weight, percentage |  | 20.00% |
Performance Based Restricted Shares | Performance Based Shares Related to Net Income Weighted at 50%, Net Sales Weighted at 30%, Commencing January 1, 2018 and Ending December 31, 2020 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Weighted Average Grant-Date Fair Value, Granted | $ 17.34 | $ 19.95 |
Performance Based Restricted Shares | Remaining 20% of Performance Based Shares are Based Upon AVD Stock Price Appreciation for the Period Commencing January 1, 2018 and Ending December 31, 2020 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Weighted Average Grant-Date Fair Value, Granted | $ 13.01 | $ 16.49 |
Unvested Performance Shares |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Unamortized Stock-Based Compensation | $ 4,524,000 |  |
Remaining Weighted Average Period (years) | 2 years 4 months 24 days |  |

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