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Consolidated Statements of Changes in Shareholders' Equity (unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Forfeiture of restricted stock award grants (in shares)	1,578
Restricted stock award grants (in shares)	50,106	35,160
Performance-based restricted stock award (in shares)	10,587	8,351
Issuance of common stock, net of issuance costs (in shares)		115,790
Cash dividends declared (in dollars per share)	$ 0.17	$ 0.17
Restricted Stock
Purchase of treasury stock (in shares)	6,598	7,211
Performance Based Restricted Stock Awards
Purchase of treasury stock (in shares)	941	3,458

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