Consolidated Statements of Comprehensive Income (Loss) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 23,023,164	$ (18,178,078)
Unrealized gain (loss) on securities:
Unrealized holding gain (loss) during the period, net of income tax expense (benefit)	6,437,454	(7,328,473)
Reclassification adjustment for gains included in net income, net of income tax benefit	31,019	725,488
Other comprehensive income (loss)	6,468,473	(6,602,985)
Comprehensive income (loss)	$ 29,491,637	$ (24,781,063)