Additional stock based compensation expense.

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- Definition

Earnings before income tax and net sales performance measure targeted percentage.

+ References

No definition available.

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- Definition

Earnings Before Income Tax Goal Weighted Percentage

+ References

No definition available.

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- Definition

Market price performance measure targeted percentage.

+ References

No definition available.

+ Details

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- Definition

Net Sales Goal Weighted Percentage

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award equity instruments other than options additional grants based on performance.

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

Share Based Compensation Arrangement By Share Payment Option Exercisable Maximum Period

+ References

No definition available.

+ Details

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- Definition

Share Based Compensation Arrangements Maximum Target

+ References

No definition available.

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- Definition

Stock Option Exercise Price Minimum Percentage On Grant Date Fair Value Of Underlying Shares

+ References

No definition available.

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- Definition

Stock Option Ownership Percentage Required For Exercise Price Of Fair Market Value

+ References

No definition available.

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- Definition

Amount of cash inflow from exercise of option under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2A
-Subparagraph (a)
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

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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=120381028&loc=d3e5070-113901

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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

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- Definition

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.

+ References

No definition available.

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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=120381028&loc=d3e5070-113901

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

+ 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 (d)(2)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

Percentage of vesting of award under share-based payment arrangement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Equity Plan Awards - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Performance Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Granted	160,706	137,557	130,332
Targeted performance percentage	200.00%	200.00%	200.00%
Weighted Average Grant-Date Fair Value, Granted	$ 14.29	$ 16.96	$ 18.74
Additional expenses recognized	$ 0
Number of Share, Additional granted based on performance	76,445	42,368
Performance Based Restricted Stock 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target performance percentage to meet performance incentive stock options based on EBIT and net sales	200.00%
Target performance percentage to meet performance incentive stock options based on market	38.00%
Additional expenses recognized	$ 0
Performance Based Restricted Stock 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target performance percentage to meet performance incentive stock options based on market		50.00%
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
Vested on March 28, 2022 \| Performance Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cliff vesting date	May 13, 2023	Mar. 28, 2022	Mar. 09, 2021
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 \| Performance Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares vesting based on Performance	80.00%	80.00%	80.00%
Earnings before income taxes goal weight, percentage	50.00%	50.00%	50.00%
Net sales goal weight, percentage	30.00%	30.00%	30.00%
Performance Based Shares Based Upon AVD Stock Price Appreciation Over the Course of the Period Commencing January 1, 2019 through December 31, 2021 \| Performance Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Earnings before income taxes goal weight, percentage	20.00%	20.00%	20.00%
Equity Incentive Plan 1993
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of securities remaining available for future issuance	1,104,637
Incentive Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value of options exercised	$ 1,393,000	$ 393,000	$ 955,000
Cash received from stock option exercised	$ 1,533,000	$ 454,000	$ 951,000