Stock-Based Compensation Plans (Tables)

3 Months Ended

Mar. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Restricted Stock Awards

A summary of the restricted stock awards as of March 31, 2018, along with the changes during the three months then ended, is as follows:

	Awards		Weighted Average Grant Date Fair Value
Nonvested at December 31, 2017	702,778		$	68.23
Granted	194,421		75.72
Vested	(167,934	)	61.63
Forfeited	(14,180	)	70.34
Nonvested at March 31, 2018	715,085		$	71.78