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Stock Options - Additional Information (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Incentive Stock Option Plans, Options granted     20,000
Number of shares received upon exercise of stock options   49,638  
Value of shares received upon exercise of stock options   $ 1,651  
Incentive Stock Option Plan
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Potential number of common stock issued under company's ISOP 4,296,000    
Option Exercisable Maximum Period 10 years    
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%    
Total intrinsic value of options exercised 2,365 15,910 4
Cash received from stock option exercised 946 2,996 414
Incentive Stock Option Plan | Minimum
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock option granted vesting period 3 years    
Incentive Stock Option Plan | Maximum
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock option granted vesting period 5 years    
Incentive Stock Options
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Incentive Stock Option Plans, Options granted 0 0 20,000
Vesting Description     One third of the total option shares
Restricted Stock
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted Average Grant-Date Fair Value, Granted $ 30.91    
Number of forfeited common stock that is granted 11,999    
Number of Shares, Granted 162,336    
Nonvested unamortized stock-based compensation expense, contractual term 1 year 10 months 24 days    
Restricted Stock | Common Stock
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock option granted vesting period 3 years 3 years 3 years
Number of common and restricted stock issued to employees and non-executive board members 162,336 248,536 35,640
The total fair value recognized over the related service periods 5,018 5,346 411
Number of forfeited common stock that is granted 11,999 1,367 5,556
Restricted Stock | Minimum | Common Stock
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted Average Grant-Date Fair Value, Granted $ 23.43 $ 13.34 $ 11.26
Restricted Stock | Maximum | Common Stock
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted Average Grant-Date Fair Value, Granted $ 31.83 $ 34.04 $ 12.89
Performance Shares
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted Average Grant-Date Fair Value, Granted $ 28.43    
Number of forfeited common stock that is granted       
Number of Shares, Granted 24,637    
Number of years of service before vesting 3 years    
Targeted performance percentage 200.00%    
Stock-based compensation expense 90    
Unamortized stock-based compensation expense $ 564    
Nonvested unamortized stock-based compensation expense, contractual term 2 years 4 months 24 days    
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%