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Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)
Common Stock Including Additional Paid in Capital [Member]
Common Class A [Member]
Common Stock Including Additional Paid in Capital [Member]
Common Class B [Member]
Additional Paid-in Capital [Member]
Treasury Stock [Member]
Common Class A [Member]
Treasury Stock [Member]
Common Class B [Member]
Treasury Stock [Member]
Retained Earnings [Member]
Common Stock [Member]
Common Class A [Member]
Common Stock [Member]
Common Class B [Member]
Common Stock Outstanding [Member]
Common Class A [Member]
Common Stock Outstanding [Member]
Common Class B [Member]
Total
Balance at Dec. 31, 2020 $ 3,896,705 $ 1,465,522 $ 1,741,901     $ (1,938,052) $ 22,366,470         $ 27,532,546
Share-based compensation expense 46,725                     46,725
Stock awards 382,619                     382,619
Stock option exercise 8,774 0 0     0 0         8,774
Acquisition 1,059,000 0 0     0 0         1,059,000
Repurchase of shares 0 0 0     (43,061) 0         (43,061)
Net income             5,653,298         5,653,298
Balance at Dec. 31, 2021 5,393,823 1,465,522 1,741,901     (1,981,113) 28,019,768         34,639,901
Balance (in shares) at Dec. 31, 2020       39,467 182,435     2,595,087 954,283 2,555,620 771,848  
Stock awards (in shares)       0 0     23,700 0 23,700 0  
Stock option exercise (in shares)       0 0     2,000 0 2,000 0  
Acquisition (in shares)       0 0     60,000 0 60,000  
Stock conversion (in shares)       0 0     40,000 40,000 40,000 40,000  
Stock conversion (in shares)       0 0     (40,000) (40,000) (40,000) (40,000)  
Share repurchase (in shares)       2,377 0     0 0 (2,377) 0  
Share repurchase (in shares)       (2,377) 0     0 0 2,377 0  
Balance (in shares) at Dec. 31, 2021       41,844 182,435     2,720,787 914,283 2,678,943 731,848  
Share-based compensation expense 16,307 0 0     0 0         16,307
Stock awards 882,000 0 0     0 0         882,000
Repurchase of shares 0 0 0     (65,709) 0         (65,709)
Net income 0 0 0     0 1,065,875         1,065,875
Balance at Mar. 31, 2022 $ 6,292,130 $ 1,465,522 $ 1,741,901     $ (2,046,822) $ 29,085,643         $ 36,538,374
Stock awards (in shares)       0 0     32,200 0 32,200 0  
Share repurchase (in shares)       2,366 0     0 0 2,366 0  
Share repurchase (in shares)       (2,366) 0     0 0 (2,366) 0  
Balance (in shares) at Mar. 31, 2022       44,210 182,435     2,752,987 914,283 2,708,777 731,848