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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
Accumulated Other Comprehensive Income/(loss)
Retained Earnings
Treasury Stock
AVD Total
Non- Controlling Interest
Balance at Dec. 31, 2014 $ 261,003 $ 3,156 $ 66,232 $ (1,970) $ 202,488 $ (8,269) $ 261,637 $ (634)
Balance (in shares) at Dec. 31, 2014   31,550,477       2,450,634    
Stocks issued under ESPP $ 573 $ 5 568       573  
Stocks issued under ESPP (in shares) 50,452 50,452            
Cash dividends on common stock, $0.02 per share 2015, $0.03 per share 2016, $0.06 per share 2017 $ (572)       (572)   (572)  
Foreign currency translation adjustment, net (1,571)     (1,571)     (1,571)  
Stock based compensation 3,881   3,881       3,881  
Stock options exercised; grants, termination, and vesting of restricted stock units (net of shares in lieu of taxes) (256) $ 3 (259)       (256)  
Stock options exercised; grants, termination, and vesting of restricted stock units (net of shares in lieu of taxes), Shares   37,296            
Tax effect from share based compensation (924)   (924)       (924)  
Adjustment and purchase of non-controlling interest (125)   (964)       (964) 839
Net income (loss) 6,317       6,591   6,591 (274)
Balance at Dec. 31, 2015 268,326 $ 3,164 68,534 (3,541) 208,507 $ (8,269) 268,395 (69)
Balance (in shares) at Dec. 31, 2015   31,638,225       2,450,634    
Stocks issued under ESPP $ 562 $ 4 558       562  
Stocks issued under ESPP (in shares) 42,730 42,730            
Cash dividends on common stock, $0.02 per share 2015, $0.03 per share 2016, $0.06 per share 2017 $ (867)       (867)   (867)  
Foreign currency translation adjustment, net (1,310)     (1,310)     (1,310)  
Stock based compensation 3,167   3,167       3,167  
Stock options exercised; grants, termination, and vesting of restricted stock units (net of shares in lieu of taxes) (321) $ 15 (336)       (321)  
Stock options exercised; grants, termination, and vesting of restricted stock units (net of shares in lieu of taxes), Shares   138,740            
Tax effect from share based compensation (224)   (224)       (224)  
Net income (loss) 13,024       12,788   12,788 236
Balance at Dec. 31, 2016 $ 282,357 $ 3,183 71,699 (4,851) 220,428 $ (8,269) 282,190 167
Balance (in shares) at Dec. 31, 2016 31,819,695 31,819,695       2,450,634    
Stocks issued under ESPP $ 555 $ 4 551       555  
Stocks issued under ESPP (in shares) 34,016 34,016            
Cash dividends on common stock, $0.02 per share 2015, $0.03 per share 2016, $0.06 per share 2017 $ (1,749)       (1,749)   (1,749)  
Foreign currency translation adjustment, net 344     344     344  
Stock based compensation 4,714   4,714       4,714  
Stock options exercised; grants, termination, and vesting of restricted stock units (net of shares in lieu of taxes) (1,268) $ 38 (1,306)       (1,268)  
Stock options exercised; grants, termination, and vesting of restricted stock units (net of shares in lieu of taxes), Shares   388,155            
Net income (loss) 20,361       20,274   20,274 87
Balance at Dec. 31, 2017 $ 305,314 $ 3,225 $ 75,658 $ (4,507) $ 238,953 $ (8,269) $ 305,060 $ 254
Balance (in shares) at Dec. 31, 2017 32,241,866 32,241,866       2,450,634