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Statements of Stockholders' Equity (Unaudited) - USD ($)
Total
Common Stock
Capital in Excess of Par Value
Accumulated (Deficit) Surplus
Treasury Stock
Accumulated Other Comprehensive (Loss)
Balance at Dec. 31, 2014 $ 9,258,368 $ 326,115 $ 10,042,305 $ (574,567) $ (512,154) $ (23,331)
Balance (in shares) at Dec. 31, 2014   3,261,148     234,114  
Net income 479,082 $ 0 0 479,082 $ 0 0
Other comprehensive (loss), net of taxes (3,906) 0 0 0 0 (3,906)
Stock-based compensation 4,478 0 4,478 0 0 0
Exercise of stock options 5,250 0 3,062 0 $ 2,188 0
Exercise of stock options, Shares         (1,000)  
Balance at Mar. 31, 2015 9,743,272 $ 326,115 10,049,845 (95,485) $ (509,966) (27,237)
Balance (in shares) at Mar. 31, 2015   3,261,148     233,114  
Balance at Dec. 31, 2015 10,613,820 $ 326,115 10,150,190 638,672 $ (450,901) (50,256)
Balance (in shares) at Dec. 31, 2015   3,261,148     206,114  
Net income 452,448 $ 0 0 452,448 $ 0 0
Other comprehensive (loss), net of taxes (65,074) 0 0 0 0 (65,074)
Issuance of common shares, net of $586,779 in costs 5,313,223 $ 112,381 5,200,842 0 0 0
Issuance of common shares, net of $586,779 in costs, Shares   1,123.810        
Stock-based compensation 8,908 $ 0 8,908 0 0 0
Balance at Mar. 31, 2016 $ 16,323,325 $ 438,496 $ 15,359,940 $ 1,091,120 $ (450,901) $ (115,330)
Balance (in shares) at Mar. 31, 2016   4,384,958     206,114