Earnings Before Income Tax Goal Weighted Percentage

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- Definition

Net Sales Goal Weighted Percentage

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- Definition

Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other Than Options, Vesting Date

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Share Based Compensation Arrangements Maximum Target

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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.

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Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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).

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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).

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Gross number of share options (or share units) granted during the period.

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Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Percentage of vesting of share-based compensation awards.

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Number of new stock issued during the period.

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Stock Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 1,510		$ 1,469		$ 2,995	$ 2,778
Unamortized Stock-Based Compensation	$ 3,863				$ 3,863
Remaining Weighted Average Period (years)					2 years 2 months 12 days
Performance Based Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Granted					0	0
Incentive Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employees options granted	0				0
Common Stock Grants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vested	32,771	105,582	20,313	8,800
Weighted Average Grant-Date Fair Value, Granted	$ 13.34	$ 17.34	$ 23.66	$ 19.97
Stock-based compensation	$ 981		$ 892		$ 1,669	$ 1,557
Unamortized Stock-Based Compensation	$ 8,091		$ 7,071		$ 8,091	$ 7,071
Remaining Weighted Average Period (years)					2 years 2 months 12 days	2 years 2 months 12 days
Number of Shares, Granted	40,522	297,679	22,308	254,972
Common Stock Grants \| Employee and Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vested						19,313
Number of shares expected to vest			19,760			19,760
Common Stock Grants \| Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Grant-Date Fair Value, Granted					$ 16.86	$ 20.27
Common Stock Grants \| Common Stock \| Employee and Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued by equity investee					338,201	277,280
Common Stock Grants \| Vested immediately \| Employee and Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vested					31,771
Common Stock Grants \| Vesting Between 95 Days to 1,115 Days \| Employee and Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares expected to vest	9,000				9,000
Common Stock Grants \| After One Year \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of days of service before cliff vesting					95 days	178 days
Common Stock Grants \| After One Year \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of days of service before cliff vesting					1115 days	1060 days
Common Stock Grants \| Three Equal Tranches \| Employee and Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares expected to vest	6,751				6,751
Common Stock Grants \| After Three Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of days of service before cliff vesting					3 years	3 years
Unvested Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unamortized Stock-Based Compensation	$ 8,091				$ 8,091
Remaining Weighted Average Period (years)						2 years 2 months 12 days
Performance Based Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vested		90,872		14,625
Weighted Average Grant-Date Fair Value, Granted		$ 16.47	$ 22.69	$ 18.79	$ 16.47	$ 18.91
Stock-based compensation	430		$ 481		$ 1,131	$ 1,028
Unamortized Stock-Based Compensation	$ 3,863		$ 3,336		$ 3,863	$ 3,336
Remaining Weighted Average Period (years)					2 years 2 months 12 days	2 years 2 months 12 days
Number of Shares, Granted		137,557	3,850	122,446	137,557	126,296
Targeted performance percentage	200.00%		200.00%		200.00%	200.00%
Performance Based Restricted Shares \| Vested on March 28, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cliff vesting date					Mar. 28, 2022
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, 2019 through December 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares vesting based on Performance					80.00%
Earnings before income taxes 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, 2019 through December 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Earnings before income taxes goal weight, percentage					20.00%
Performance Based Restricted Shares \| Vested on March 9, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cliff vesting date						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 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 taxes 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 and ending December 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Earnings before income taxes 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, 2019 and Ending December 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Grant-Date Fair Value, Granted					$ 17.34
Performance Based Restricted Shares \| Remaining 20% of Performance Based Shares are Based Upon AVD Stock Price Appreciation for the Period Commencing January 1, 2019 and Ending December 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Grant-Date Fair Value, Granted					$ 15.46