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Equity Plan Awards - Additional Information (Detail) - USD ($) |  | 12 Months Ended | 36 Months Ended
--- | --- | --- | ---
Jan. 06, 2016 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Stock-based compensation |  | $ 5,805,000 | $ 4,714,000 | $ 3,167,000 |
Incentive Stock Options |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Option Exercise Price as Percentage of Fair Value of Common Stock |  | 10.00% |  |  |
Option exercise price as percentage of fair value of common stock |  | 110.00% |  |  |
Option Exercisable Maximum Period |  | 10 years |  |  |
Incentive Stock Option Plans, Options granted |  | 0 | 0 | 0 |
Stock-based compensation |  | $ 0 | $ 345,000 | $ 354,000 |
Remaining Weighted Average Period (years) |  |  |  | 1 year |
Nonstatutory Stock Options (“NSSO”) |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Incentive Stock Option Plans, Options granted |  |  |  |  | 0
Common Stock Grants |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Stock-based compensation |  | $ 3,657,000 | $ 2,705,000 | $ 1,630,000 |
Number of Shares, Vested |  | 53,304 | 203,165 |  |
Number of years of service before cliff vesting |  | 3 years | 3 years |  |
Weighted Average Grant-Date Fair Value, Granted |  | $ 20.21 | $ 16.24 | $ 15.22 |
Number of forfeited common stock that is granted |  | 33,269 | 20,815 |  |
Number of shares granted to employees |  | 282,030 | 290,977 |  |
Unamortized Stock-Based Compensation |  | $ 5,166,000 | $ 3,788,000 | $ 2,153,000 | $ 5,166,000
Remaining Weighted Average Period (years) |  | 1 year 3 months 18 days | 1 year | 1 year 7 months 6 days |
Common Stock Grants | Vested immediately |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of Shares, Vested |  | 25,312 | 26,820 |  |
Common Stock Grants | Vest 6 months |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of Shares, Vested |  | 1,017 |  |  |
Common Stock Grants | Vest eighteen months |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of Shares, Vested |  | 1,017 |  |  |
Common Stock Grants | Vest two year |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of Shares, Vested |  | 5,250 | 1,782 |  |
Common Stock Grants | Vest one-half each year |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of Shares, Vested |  |  | 1,300 |  |
Common Stock Grants | Common Stock |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Shares issued by equity investee |  | 282,030 | 290,977 |  |
The total fair value recognized over the vesting period |  | $ 5,651,000 | $ 4,726,000 |  |
Number of forfeited common stock that is granted |  | 33,269 | 20,815 |  |
Common Stock Grants | Common Stock | Minimum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Weighted Average Grant-Date Fair Value, Granted |  | $ 16.85 | $ 14.92 |  |
Common Stock Grants | Common Stock | Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Weighted Average Grant-Date Fair Value, Granted |  | $ 23.60 | $ 19.90 |  |
Performance Based Restricted Shares |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Stock-based compensation |  | $ 2,148,000 | $ 1,248,000 | $ 995,000 |
Number of Shares, Vested |  | 22,857 | 48,046 |  |
Weighted Average Grant-Date Fair Value, Granted |  | $ 18.74 | $ 15.43 |  |
Number of forfeited common stock that is granted |  | 6,455 | 13,513 |  |
Number of shares granted to employees | 52,170 | 130,332 | 128,594 |  |
Targeted performance percentage | 200.00% | 200.00% | 200.00% | 200.00% | 200.00%
Target performance percentage to meet performance incentive stock options based on market |  | 125.00% |  |  |
Additional expenses recognized |  | $ 0 |  |  |
Unamortized Stock-Based Compensation |  | $ 2,565,000 | $ 1,642,000 | $ 796,000 | $ 2,565,000
Remaining Weighted Average Period (years) |  | 1 year 10 months 24 days | 1 year 9 months 18 days | 1 year 8 months 12 days |
Performance Based Restricted Shares | Vested on March 9, 2021 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Cliff vesting date | Jan. 06, 2019 | Mar. 09, 2021 | Feb. 08, 2020 |  |
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 and ending 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, Ending 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 stock options based upon financial performance of earnings before interest and tax ("EBIT") and net sales goal for the period commencing January 1, 2016 through December 31, 2018 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Weighted Average Grant-Date Fair Value, Granted |  |  |  | $ 15.08 |
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, 2016 through December 31, 2018 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Weighted Average Grant-Date Fair Value, Granted |  |  |  | $ 11.63 |
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 |  | $ 18.27 |  |  |
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 |  | $ 15.43 |  |  |
Performance Based Restricted Shares | Performance Based Shares Related to Net Income Weighted at 50%, Net Sales Weighted at 30%, Commencing January 1, 2017 and Ending December 31, 2019 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Weighted Average Grant-Date Fair Value, Granted |  |  | $ 16.10 |  |
Performance Based Restricted Shares | Remaining 20% of Performance Based Shares are Based Upon AVD Stock Price Appreciation for the Period Commencing January 1, 2017 and Ending December 31, 2019 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Weighted Average Grant-Date Fair Value, Granted |  |  | $ 12.60 |  |
Unvested Performance Shares |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unamortized Stock-Based Compensation |  | $ 2,565,000 |  |  | $ 2,565,000
Remaining Weighted Average Period (years) |  | 1 year 10 months 24 days |  |  |
Equity Incentive Plan Nineteen Ninety Three |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of securities remaining available for future issuance |  | 1,568,888 |  |  | 1,568,888
Incentive Stock Option Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Total intrinsic value of options exercised |  | $ 955,000 | $ 545,000 | $ 493,000 |
Cash received from stock option exercised |  | 951,000 | 468,000 | 442,000 |
Performance Based Stock Options |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Incentive Stock Option Plans, Options granted |  |  |  |  | 0
Stock-based compensation |  | $ 0 | $ 416,000 | $ 188,000 |

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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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