Stock Compensation (Tables)

9 Months Ended

Sep. 30, 2018

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

Summary of Restricted Stock Award Activity

A summary of restricted stock award activity during the nine months ended September 30, 2018 is presented below:

	Shares		Weighted Average Price
Nonvested at December 31, 2017	405,536		$	44.58
Restricted stock units granted	133,920		52.21
Vested	(148,041	)	56.83
Forfeited	(2,716	)	49.15
Nonvested at September 30, 2018	388,699		$	42.51

A summary of performance share award activity during the nine months ended September 30, 2018 is presented below:

	Shares		Weighted Average Price
Nonvested at December 31, 2017	400,037		$	55.65
Granted (three-year vesting period)	158,262		68.08
Vested and paid	(112,710	)	83.94
Forfeited	(3,129	)	60.98
Nonvested at September 30, 2018	442,460		$	52.85