Annual report pursuant to Section 13 and 15(d)

Income Taxes - Income Tax Benefit (Details)

v3.10.0.1
Income Taxes - Income Tax Benefit (Details) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Tax Disclosure [Abstract]                      
Federal statutory income tax rate                 21.00% 35.00% 35.00%
Total income tax expense (benefit) differs from the amount computed by applying the federal statutory income tax rates net investment income and net realized and unrealized gains on investments                      
Application of statutory income tax rate                 $ 8,671,562 $ 12,231,838 $ 10,219,573
State income taxes, net of federal tax benefit                 (583,186) 352,708 26,215
Income of Real Estate Investment Trust not subject to tax                 (10,339,520) (11,975,853) (10,663,371)
Tax reform impact                 0 1,262,444 0
Other                 (167,582) 474,181 (46,837)
Income tax expense (benefit), net $ (612,384) $ (746,667) $ (614,849) $ (444,826) $ 2,390,618 $ 191,571 $ 95,735 $ (332,606) $ (2,418,726) $ 2,345,318 $ (464,420)