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Statements of Changes in Stockholders' Equity - USD ($)
Retained Earnings [Member]
Common Stock [Member]
Total
Balance at Dec. 31, 2015 $ 13,750,432 $ 59,335 $ 13,809,767
Net income 170,674 170,674
Dividends reversion 6,507 6,507
Balance at Dec. 31, 2016 13,927,613 59,335 13,986,948
Net income 522,863 522,863
Dividends reversion    
Dividends paid (194,250) (194,250)
Balance at Dec. 31, 2017 $ 14,256,226 $ 59,335 $ 14,315,561