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Stock Based Compensation Expense - Additional Information (Detail) (USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 101,000			$ 92,000	$ 67,000	$ 118,000
Number of Shares, Granted		79,270			79,270	24,637
Number of shares vested
Number of years of service before cliff vesting						3 years
Weighted Average Grant-Date Fair Value, Granted		$ 14.23
Nonvested unamortized stock-based compensation expense, contractual term					2 years 4 months 24 days
Cliff vesting date					May 23, 2017
Targeted performance percentage	200.00%			200.00%	200.00%	200.00%
Unamortized stock-based compensation expense	1,404,000				1,404,000
Performance Shares | Performance based shares based upon financial performance of earnings before interest and tax ("EBIT") and net sales goal for the period commencing April 1, 2014 and ending December 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Grant-Date Fair Value, Granted					$ 14.92
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 Shares | Performance based shares based upon AVD stock price appreciation over the course of the period commencing April 1, 2014 and ending December 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Grant-Date Fair Value, Granted					$ 12.85
Percentage of shares vesting based on Performance					20.00%
Performance Shares | Performance based shares based upon net income and net sales for the period commencing April 1, 2013 and ending December 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares vesting based on Performance						80.00%
Performance Shares | Performance based shares based upon AVD stock price appreciation over the course of the period commencing June 6, 2013 and ending on December 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of shares vesting based on Performance						20.00%
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	1,139,000			856,000	2,958,000	2,153,000
Nonvested unamortized stock-based compensation expense, value	6,069,000				6,069,000
Number of Shares, Granted		240,724			240,724	158,614
Number of shares vested	4,000	23,478	1,000			8,230
Number of years of service before cliff vesting					3 years
Weighted Average Grant-Date Fair Value, Granted		$ 14.81			$ 14.81	$ 31.06
Nonvested unamortized stock-based compensation expense, contractual term					1 year 10 months 24 days
Restricted Stock | Share-based Compensation Award, Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of years of service before cliff vesting						3 years
Number of shares expected to vest				148,884		148,884
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	0			201,000	21,000	624,000
Nonvested unamortized stock-based compensation expense, value	$ 0				$ 0

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Share Based Compensation Arrangements Maximum Target

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Stock options unamortized stock based compensation expenses related to unvested stock options outstanding.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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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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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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Percentage of vesting of share-based compensation awards.

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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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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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