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Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Stockholders' Equity
Dividends declared (in dollars per share)	$ 1.44	$ 1.37	$ 1.31
Common stock grants awarded, net of unearned compensation	$ 520	$ 147	$ 92
Common stock grants awarded, net of unearned compensation (in shares)	8,506	3,854	2,548
Share retired, shares	181,417	14,428

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Aggregate dividends declared during the period for each share of common stock outstanding.

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