Summary of Significant Accounting Policies (Accumulated Other Comprehensive Earnings (Loss)) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net current period other comprehensive loss	$ (4,969,069)	$ (2,226,522)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Including Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	2,920,027	5,520,091
Other comprehensive loss before reclassification	(4,961,385)	(2,225,503)
Amount reclassified from accumulated other comprehensive loss	(7,684)	(1,019)
Net current period other comprehensive loss	(4,969,069)	(2,226,522)
Balance	$ (2,049,042)	$ 3,293,569