Summary of Significant Accounting Policies (Accumulated Other Comprehensive Earnings (Loss)) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive earnings (loss)	$ 3,524,729	$ 1,245,804	$ 1,813,883	$ 2,720,013
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Including Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			2,953,936	(1,580,976)
Other comprehensive earnings before reclassification			2,086,077	2,837,836
Amount reclassified from accumulated other comprehensive earnings			(272,194)	(117,823)
Total other comprehensive earnings (loss)			1,813,883	2,720,013
Balance	$ 4,767,819	$ 2,505,334	4,767,819	2,505,334
Cumulative Effect, Period of Adoption, Adjustment [Member] | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Including Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance				1,366,297
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Including Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance			$ 2,953,936	$ (214,679)