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Condensed Consolidated Statements of Changes to Stockholder's Equity (Parenthetical) (Unaudited) - $ / shares
3 Months Ended
Sep. 30, 2020
Mar. 31, 2020
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Cash dividends declared, per share $ 0.17 $ 0.16 $ 0.15 $ 0.15 $ 0.15
Common Stock [Member]          
Issuance of shares of restricted stock, Shares 36,551   37,700   400
Issuance of shares of restricted stock, forfeitures   450 300 880 2,040
Issuance of shares of common stock in acquisition         1,830,000