Consolidated Condensed Statements Of Changes In Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Stockholders' Equity [Abstract]
Common Stock, Dividends, Per Share, Cash Paid	$ 1.23	$ 1.22
Treasury Stock, Shares, Acquired		76,000
Stock Issued During Period, Shares, Restricted Stock Award, Gross	21,764	25,028