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Consolidated Statements of Changes in Stockholders' Equity - USD ($)
Common Stock [Member]
Common Class A [Member]
Common Stock [Member]
Common Class B [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Balance (in shares) at Dec. 31, 2018 21,029,324 1,055,560      
Balance at Dec. 31, 2018 $ 21,029 $ 1,056 $ 335,518,323 $ (20,325,024) $ 315,215,384
Stock issued for cash (in shares) 1,391,103 0      
Stock issued for cash $ 1,391 $ 0 32,203,341 0 32,204,732
Stock issued for business acquisition (in shares) 34,673 0      
Stock issued for business acquisition $ 35 $ 0 710,068 710,103
Increase (decrease) in redeemable noncontrolling interest 0 0 (378,821) 0 (378,821)
Offering costs 0 0 (1,023,490) 0 (1,023,490)
Net income (loss) attributable to common stockholders $ 0 $ 0 0 (1,486,923) (1,486,923)
Balance (in shares) at Dec. 31, 2019 22,455,100 1,055,560      
Balance at Dec. 31, 2019 $ 22,455 $ 1,056 367,029,421 (21,811,947) 345,240,985
Stock issued for cash (in shares) 3,720,455 0      
Stock issued for cash $ 3,721 $ 0 59,546,030 0 59,549,751
Increase (decrease) in redeemable noncontrolling interest 0 0 434,281 0 434,281
Offering costs 0 0 (3,428,355) 0 (3,428,355)
Net income (loss) attributable to common stockholders 0 0 0 455,783 455,783
Decrease in redeemable noncontrolling interest due to redemption 0 0 323,649 0 323,649
Contributions from noncontrolling interest $ 0 $ 0 299,615 0 299,615
Balance (in shares) at Dec. 31, 2020 26,175,555 1,055,560      
Balance at Dec. 31, 2020 $ 26,176 $ 1,056 $ 424,204,641 $ (21,356,164) $ 402,875,709