Consolidated Statements of Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Issue stock for directors, employee benefit and stock plans, related tax withholdings of shares (in shares)	35,061	20,494	12,198
Dividends paid per common share (in dollars per share)	$ 0.94	$ 0.89	$ 0.88