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Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($)
Total
Common Stock
Capital in Excess of Par Value
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of period at Sep. 30, 2018 $ 79,583,112 $ 39,973,075 $ 13,043,656 $ 27,438,049 $ (871,668)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 2,434,162     2,434,162  
Other comprehensive income (loss) (83,316)       (83,316)
Cash dividends declared (1,322,335)     (1,322,335)  
Issuance of common stock 348,117 85,175 262,942    
Balance at end of period at Dec. 31, 2018 80,959,740 40,058,250 13,306,598 28,549,876 (954,984)
Balance at beginning of period at Sep. 30, 2019 83,096,392 40,366,320 14,397,072 30,821,917 (2,488,917)
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 4,006,936     4,006,936  
Other comprehensive income (loss) 279,844       279,844
Cash dividends declared (1,419,236)     (1,419,236)  
Issuance of common stock 395,199 90,265 304,934    
Balance at end of period at Dec. 31, 2019 $ 86,359,135 $ 40,456,585 $ 14,702,006 $ 33,409,617 $ (2,209,073)