Consolidated Statements of Stockholders' Equity Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Stockholders' Equity [Abstract]
Preferred Stock, Shares Authorized	2,000,000	2,000,000
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Shares Held In Trust For Deferred Compensation Plan	97,053	90,961	76,745
Dividends Declared	$ 1.4350	$ 1.2800	$ 1.2025
Shares Issued Under Performance Incentive Plan Withheld For Employee Taxes	10,436	10,269	12,031