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Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)
Retained Earnings [Member]
Common Stock [Member]
Total
Balance at Dec. 31, 2016 $ 13,927,613 $ 59,335 $ 13,986,948
Net income 44,620 44,620
Dividends declared (194,250) (194,250)
Balance at Mar. 31, 2017 13,777,983 59,335 13,837,318
Balance at Dec. 31, 2017 14,256,226 59,335 14,315,561
Net income 837,361 837,361
Dividends declared (233,099) (233,099)
Balance at Mar. 31, 2018 $ 14,860,488 $ 59,335 $ 14,919,823