Summary of Significant Accounting Policies (Summary of Components of Other Comprehensive Earnings) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Summary of Significant Accounting Policies [Abstract]
Unrealized holding (losses) gains arising during the period, Pre-tax	$ (2,817,092)	$ (1,932,861)
Reclassification adjustment for (gains) losses included in net earnings, Pre-tax	(1,290)	(232,767)
Total other comprehensive (loss) earnings, Pre-tax	(2,818,382)	(2,165,628)
Unrealized holding (losses) gains arising during the period, Tax	591,589	405,901
Reclassification adjustment for (gains) losses included in net earnings, Tax	271	48,881
Total other comprehensive (loss) earnings, Tax	591,860	454,782
Unrealized holding (losses) gains arising during the period, After-tax	(2,225,503)	(1,526,960)
Reclassification adjustment for (gains) losses included in net earnings, After-tax	(1,019)	(183,886)
Net current period other comprehensive loss	$ (2,226,522)	$ (1,710,846)