Consolidated Statements of Comprehensive Income - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ 1,206,356	$ 7,108,574	$ (17,761,577)	$ 9,894,744
Unrealized (loss) gain on securities:
Unrealized holding (loss) gain during the period, net of income tax (benefit) expense	(2,293,154)	1,042,317	(11,382,714)	4,115,189
Reclassification adjustment for losses (gains) included in net (loss) income, net of income tax (benefit) expense	16,204	(364,929)	41,734	(2,735,012)
Other comprehensive (loss) income	(2,276,950)	677,388	(11,340,980)	1,380,177
Comprehensive (loss) income	$ (1,070,594)	$ 7,785,962	$ (29,102,557)	$ 11,274,921