Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Forfeiture of restricted stock award grants (in shares)	2,669		2,699
Restricted stock award grants (in shares)	55,218	36,968	40,978
Performance based restricted stock award grants (in shares)	10,587	8,351	798
Contribution of treasury stock (in shares)	3,000
Issuance of common stock, net of issuance costs (in shares)		115,790	52,568
Purchase of treasury stock (in shares)	36,359	66,600	40,000
Cash dividends declared (in dollars per share)	$ 685	$ 0.68	$ 0.68
Cumulative-effect adjustment due to the adoption of ASU No. 2016-13			ASU No. 2016-13
Restricted Stock
Purchase of treasury stock (in shares)	6,782	7,349	10,467
Performance Based Restricted Stock Awards
Purchase of treasury stock (in shares)	941	3,458	294