Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 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 March 31, 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	$	315.2	7
January/March 2016	63	3 equal annual installments commencing on October 20, 2016	$	15.8	7
October 2016	411	3 equal annual installments commencing on October 20, 2017	$	1,075.8	19
June 2017	6	3 equal annual installments commencing on October 20, 2017	$	25.3	19
October 2017	303	3 equal annual installments commencing on October 20, 2017	$	2,544.5	31
October 2017	46	fully vests as of October 20, 2018	$	262.5	7

Summary of Information about Nonvested Restricted Stock Grants

The following table summarizes information about the non-vested restricted stock grants for the three months ended March 31, 2018 and 2017:

	Three Months Ended March 31,
	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	—		—		—		—
Vested	—		—		(3	)	4.89
Forfeited	(2	)	6.37		—		—
Nonvested at March 31	785		$	6.84	978		$	4.70