Derivatives - Fair Value Hedges on Income Statement (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Interest Income	$ 26,942,535	$ 19,378,054
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on fair value hedging relationship	(2,063,000)
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on fair value hedging relationship	$ 2,063,000