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9. Debt (Tables)
12 Months Ended
Dec. 31, 2019
Long-term Debt, Unclassified [Abstract]  
Long-term debt
     December 31,      December 31,  
    2019     2018  
             
 5.50% Senior Unsecured Notes   $ 30,000,000     $ 30,000,000  
 Discount     (97,325 )     (129,796 )
 Issuance costs     (431,244 )     (574,953 )
 Long-term debt, net   $ 29,471,431     $ 29,295,251