Consolidated Statements of Stockholders' Equity Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
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	105,087	95,329	97,053
Dividends Declared	$ 1.7250	$ 1.5850	$ 1.4350
Shares Issued Under Performance Incentive Plan Withheld For Employee Taxes	10,319	7,635	16,918