Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2018

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

Summary of Information about Restricted Stock Grants Outstanding

The following table summarizes information about outstanding restricted stock grants as of September 30, 2018:

Grant	Shares ('000)	Vesting Schedule	Unearned Compensation ('000)		Remaining Periods (in months)
October 2015	596	3 equal annual installments commencing on October 20, 2016	$	44.4	1
January/March 2016	63	3 equal annual installments commencing on October 20, 2016	$	2.3	1
October 2016	411	3 equal annual installments commencing on October 20, 2017	$	695.3	13
July 2017	6	3 equal annual installments commencing on October 20, 2017	$	17.3	13
October 2017	303	3 equal annual installments commencing on October 20, 2018	$	1,938.1	25
October 2017	46	fully vests as of October 20, 2018	$	37.5	1
May 2018	64	fully vests as of May 20, 2019	$	315.0	7

Summary of Information about Nonvested Restricted Stock Grants

The following table summarizes information about the non-vested restricted stock grants for the nine months ended September 30, 2018 and 2017:

	Nine Months Ended September 30,
	2018				2017
	Shares (000’s)		Weighted- Average Grant-Date Fair Value		Shares (000’s)		Weighted- Average Grant-Date Fair Value
Nonvested at December 31	787		$	6.84	981		$	4.70
Granted	64		8.41		6		8.77
Vested	—		—		(6	)	4.89
Forfeited	(16	)	7.12		(39	)	4.84
Nonvested at September 30	835		$	6.96	942		$	4.72