Employee Benefit Plans - Reconciliation of the Accumulated Post-Retirement Benefit Obligation (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Roll Forwards [Abstract]
Projected benefit obligation at beginning of year	$ 13,209,019	$ 12,155,436
Interest cost	300,973	366,543
Actuarial gain	(766,993)	1,261,873
Benefits paid	(583,244)	(574,833)
Projected benefit obligation at end of year	$ 12,159,755	$ 13,209,019