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Condensed Consolidated Statement of Equity - USD ($)
Total
Common stock
Retained earnings
Noncontrolling interests
Balance, Beginning of Period at Dec. 31, 2017 $ 63,921,601 $ 52,410,941 $ 11,709,222 $ (198,562)
Balance, Beginning of Period (in shares) at Dec. 31, 2017   15,723,075    
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Proceeds from the sale of common stock, net of offering costs 200,909 $ 200,909    
Proceeds from the sale of common stock, net of offering costs (in shares)   30,704    
Share-based compensation 339,209 $ 339,209    
Share-based compensation (in shares)   145,550    
Repurchase of shares (1,195,225) $ (1,195,225)    
Repurchase of shares (in shares)   (172,079)    
Net income (loss) (2,392,189)   (2,379,239) (12,950)
Balance, End of Period at Mar. 31, 2018 60,874,305 $ 51,755,834 9,329,983 (211,512)
Balance, End of Period (in shares) at Mar. 31, 2018   15,727,250    
Balance, Beginning of Period at Dec. 31, 2018 $ 55,570,501 $ 51,098,613 4,746,154 (274,266)
Balance, Beginning of Period (in shares) at Dec. 31, 2018 15,481,497 15,481,497    
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Share-based compensation $ 364,434 $ 364,434    
Share-based compensation (in shares)   187,486    
Repurchase of shares (703,790) $ (703,790)    
Repurchase of shares (in shares)   (121,466)    
Net income (loss) (40,418)   (73,878) 33,460
Balance, End of Period at Mar. 31, 2019 $ 55,190,727 $ 50,759,257 $ 4,672,276 $ (240,806)
Balance, End of Period (in shares) at Mar. 31, 2019 15,547,517 15,547,517