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Property and Equipment (Details) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Property And Equipment    
Land $ 1,787,485 $ 1,787,485
Office building and tenant improvements 8,398,275 8,352,181
Furniture, fixtures, equipment and other leasehold improvements 2,063,549 2,724,775
Computer software under development 363,016 355,234
Accumulated depreciation and amortization (3,051,505) (3,204,806)
Net property and equipment $ 9,560,820 $ 10,014,869