Stock Compensation (Tables)

6 Months Ended

Jun. 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 six months ended June 30, 2018 is presented below:

	Shares		Weighted Average Price
Nonvested at December 31, 2017	405,536		$	44.58
Restricted stock units granted	131,341		51.83
Vested	(107,631	)	61.59
Forfeited	(541	)	49.58
Nonvested at June 30, 2018	428,705		$	42.52

A summary of performance share award activity during the six months ended June 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	(735	)	60.33
Nonvested at June 30, 2018	444,854		$	52.90