Consolidated Statements of Changes to Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Issuance of shares of restricted stock, Shares	37,382	38,100	33,000
Cash dividends declared, per share	$ 0.66	$ 0.61	$ 0.56
Common Stock [Member]
Issuance of shares of restricted stock, Shares	37,382	38,100	33,000
Issuance of shares of restricted stock, forfeitures	2,175	3,220	2,620
Issuance of shares of common stock in acquisition	40,049	1,830,000