Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2018

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

Schedule of Nonvested Performance Shares and Restricted Stock

A summary of the status of nonvested restricted stock as of third quarter-end 2018 and year-to-date changes is presented as follows below (in thousands of shares except per share data).

	Shares		Weighted Average Grant Date Fair Value
Nonvested at year-end 2017	440		$	18.76
Granted	153		28.94
Vested	(104	)	19.70
Forfeited	(44	)	20.19
Nonvested at third quarter-end 2018	445		$	21.89

A summary of the status of all nonvested performance shares at target as of third quarter-end 2018 and year-to-date changes is presented as follows below (in thousands of shares except per share data). The majority of the vested shares below is related to the 2015 performance share grant, which cliff-vested after approval from the Compensation Committee during the first quarter of 2018.

	Financial Measure Performance Shares				TSR Performance Shares
	Shares		Weighted Average Grant Date Fair Value		Shares		Weighted Average Grant Date Fair Value
Nonvested at year-end 2017	592		$	22.32	240		$	18.17
Granted	163		28.64		59		31.38
Vested	(229	)	16.62		(109	)	16.01
Forfeited	(45	)	26.18		(17	)	22.94
Nonvested at third quarter-end 2018	481		$	25.43	173		$	23.56