Consolidated Statements of Stockholders' Equity Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Stockholders' Equity [Abstract]
Shares Held In Trust For Deferred Compensation Plan	70,631	57,382	51,743
Dividends Declared	$ 1.1325	$ 1.0667	$ 1.0133
Shares Issued Under Performance Incentive Plan Withheld For Employee Taxes	12,620	12,687	15,617