Consolidated Statements of Stockholders' Equity Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
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	76,745	70,631	57,382
Dividends Declared	$ 1.2025	$ 1.1325	$ 1.0667
Shares Issued Under Performance Incentive Plan Withheld For Employee Taxes	12,031	12,620	12,687