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Stock Based Compensation Expense - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 11	$ 209
Nonvested unamortized stock-based compensation expense, value	10
Nonvested unamortized stock-based compensation expense, contractual term	2 months 12 days
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	834	479
Nonvested unamortized stock-based compensation expense, value	4,640
Nonvested unamortized stock-based compensation expense, contractual term	1 year 7 months 6 days
Number of Shares, Granted		145,884
Number of shares vested	1,000
Weighted Average Grant-Date Fair Value, Granted		$ 31.27
Number of Shares, Forfeited	1,840	8,000
Weighted Average Grant-Date Fair Value, Forfeited	$ 24.23	$ 22.17
Restricted Stock | Vest one-third each year
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares vested		3,000
Restricted Stock | Cliff Vest After Three Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expenses recognized period		3 years
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ (77)
Nonvested unamortized stock-based compensation expense, contractual term	2 years 2 months 12 days
Number of Shares, Granted		24,637
Number of shares vested
Expenses recognized period		3 years
Weighted Average Grant-Date Fair Value, Granted
Number of Shares, Forfeited
Weighted Average Grant-Date Fair Value, Forfeited
Targeted performance percentage		200.00%
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]
Weighted Average Grant-Date Fair Value, Granted	$ 30.13
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]
Weighted Average Grant-Date Fair Value, Granted	$ 15.31
Percentage of shares vesting based on Performance		20.00%

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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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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

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-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

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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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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 equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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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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