Summary of Significant Accounting Policies (Summary of Components of Other Comprehensive Earnings) (Details) - USD ($)	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Summary of Significant Accounting Policies [Abstract]
Unrealized holding (losses) gains arising during the period, Pre-tax	$ 1,866,085	$ (2,147,336)
Reclassification adjustment for (gains) losses included in net earnings, Pre-tax	47,426	(1,102,130)
Total other comprehensive (loss) earnings, Pre-tax	1,913,511	(3,249,466)
Unrealized holding (losses) gains arising during the period, Tax	(429,343)	450,942
Reclassification adjustment for (gains) losses included in net earnings, Tax	(9,959)	231,447
Total other comprehensive (loss) earnings, Tax	(439,302)	682,389
Unrealized holding (losses) gains arising during the period, After-tax	1,436,742	(1,696,394)
Reclassification adjustment for (gains) losses included in net earnings, After-tax	37,467	(870,683)
Total other comprehensive (loss) earnings	$ 1,474,209	$ (2,567,077)

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Amount before tax, after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount of tax expense (benefit), after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount before tax, after reclassification adjustments of other comprehensive income (loss).

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