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Employee Benefit Plans - Summary of Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Detail) - Supplemental Employee Retirement Plan [Member] - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income
Net actuarial (gain) loss	$ (348,736)	$ 1,345,943
Recognized actuarial (gain) loss	(171,677)
Total recognized in other comprehensive income (before tax effects)	(520,413)	1,345,943
Total recognized in net benefit cost and other comprehensive income (before tax effects)	$ (125,887)	$ 1,625,721

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Amount recognized in net periodic benefit cost (credit) and other comprehensive (income) loss.

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Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.

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