Employee Benefit Plans - Stock Transactions - Stock Option Plans (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Shares
Options Outstanding, beginning shares (in shares)	672,800	614,311	584,178
Options granted (in shares)	89,000	151,500	96,000
Options exercised (in shares)	(71,267)	(63,011)	(60,534)
Options forfeited, shares	(2,000)	(30,000)	(5,333)
Options expired, shares	0	0	0
Options Outstanding, ending shares (in shares)	688,533	672,800	614,311	584,178
Shares Exercisable	471,214
Weighted average exercise price
Weighted Average exercise Price: Options Outstanding, beginning (in usd per share)	$ 16.42	$ 14.78	$ 13.00
Weighted Average Exercise Price: Options granted (in usd per share)	19.21	19.80	21.31
Weighted Average Exercise Price: Options exercised (in usd per share)	8.84	7.16	7.49
Weighted Average Exercise Price: Options forfeited (in usd per share)	18.64	19.50	19.38
Weighted Average exercise Price: Options Outstanding, ending (in usd per share)	17.56	$ 16.42	$ 14.78	$ 13.00
Weighted average exercise price, Options Exercisable (in dollars per share)	$ 16.53
Weighted Average Remaining Contractual Life (in years): Options Outstanding	6 years 7 months 6 days	6 years 9 months 18 days	6 years 10 months 24 days	7 years 1 month 6 days
Weighted Average Remaining Contractual Life (in years): Options Exercisable	5 years 9 months 18 days
Aggregate Intrinsic Value: Options Outstanding	$ 5,986,666	$ 1,952,568	$ 4,783,402	$ 4,574,680
Aggregate Intrinsic Value: Options Exercisable	$ 4,579,836