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Consolidated Statements of Changes in Stockholders' Equity - USD ($)
Common Stock
Treasury Stock
Additional Paid-in Capital
Retained Earnings
Total
Beginning balance, shares at Dec. 31, 2019 13,518,036        
Beginning balance at Dec. 31, 2019 $ 13,518 $ 0 $ 27,584,610 $ 3,683,954 $ 31,282,082
Stock-based compensation     322,734   322,734
Restricted common stock granted for services, shares 18,706        
Restricted common stock granted for services $ 19       19
Net income 875,178 875,178
Ending balance, shares at Mar. 31, 2020 13,536,742        
Ending balance at Mar. 31, 2020 $ 13,537 0 27,907,344 4,559,132 32,480,013
Beginning balance, shares at Dec. 31, 2020 13,628,675        
Beginning balance at Dec. 31, 2020 $ 13,629 (146,465) 28,811,389 7,685,720 36,364,273
Stock-based compensation     268,071   268,071
Common stock dividends       (680,247) (680,247)
Restricted common stock granted for services, shares 9,366        
Restricted common stock granted for services $ 9       9
Net income 3,742,044 3,742,044
Ending balance, shares at Mar. 31, 2021 13,638,041        
Ending balance at Mar. 31, 2021 $ 13,638 $ (146,465) $ 29,079,460 $ 10,747,517 $ 39,694,150