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Consolidated Statements of Shareholders' Equity - USD ($)
Total
Common Stock [Member]
Class A Common Stock [Member]
Common Stock [Member]
Class B Common Stock [Member]
Additional Paid In Capital [Member]
Treasury Stock [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Noncontrolling Interest [Member]
Beginning balance at Dec. 31, 2018 $ 275,034,091 $ 15,334 $ 16,662 $ 149,963,252 $ (30,447,597) $ 155,398,555 $ 87,885 $ (66,582)
Beginning Balance, shares at Dec. 31, 2018   15,334,336 16,662,743   (4,426,027)      
Change in accounting principle (935,916)         (935,916)    
Issuance of common stock 1,172,625 $ 285   1,172,340        
Issuance of common stock, shares   285,296            
Stock-based compensation 2,118,718 $ 185   2,118,533        
Stock-based compensation, shares   185,800            
Adjustment from related party acquisition 474     474        
Purchase of treasury stock (214,735)       $ (214,735)      
Purchase of treasury stock, shares         (67,154)      
Net income (loss) 13,383,642         13,450,224   (66,582)
Cash dividends, per common share (5,562,718)         (5,562,718)    
Other comprehensive loss (524,223)           (524,223)  
Ending balance at Dec. 31, 2019 284,471,958 $ 15,804 $ 16,662 153,254,599 $ (30,662,332) 162,350,145 (436,338)  
Ending Balance, shares at Dec. 31, 2019   15,805,432 16,662,743   (4,493,181)      
Issuance of common stock 2,540,426       $ 2,540,426      
Issuance of common stock, shares         1,276,596      
Stock-based compensation 750,670 $ 126   750,544        
Stock-based compensation, shares   125,333            
Adjustment from related party acquisition (178)     (178)        
Purchase of treasury stock $ (65,951)       $ (65,951)      
Purchase of treasury stock, shares (37,106)       (37,106)      
Net income (loss) $ (18,874,156)         (17,765,921)   (1,108,235)
Cash dividends, per common share (1,398,321)         (1,398,321)    
Other comprehensive loss (990,281)           (990,281)  
Noncontrolling interest created in consolidation 667,653         118,310   549,343
Ending balance at Dec. 31, 2020 $ 267,101,820 $ 15,930 $ 16,662 $ 154,004,965 $ (28,187,857) $ 143,304,213 $ (1,426,619) $ (625,474)
Ending Balance, shares at Dec. 31, 2020   15,930,765 16,662,743   (3,253,691)