Consolidated Condensed Statements Of Changes In Stockholders' Equity (Parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Statement of Stockholders' Equity [Abstract]
Common Stock, Dividends, Per Share, Cash Paid	$ 3.11	$ 2.82
Stock Issued During Period, Shares, Acquisitions	435,457	0
Treasury Stock, Shares, Acquired	50,000	70,000
Stock Issued During Period, Shares, Restricted Stock Award, Gross	18,800	9,674