Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2018

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

Schedule of Restricted Stock Units Activity

The following tables summarize restricted stock unit grants under the 2017 Plan during the three and six months ended June 30, 2018 and under the 2010 Plan for the three and six months ended June 30, 2017:

Three Months Ended June 30,	Grantee Type	# of Restricted Stock Units Granted	Vesting Period	Grant Date Fair Value (in thousands)
2018	Employee group	58,625	1-4 years	$	1,004
2017	Employee group	65,575	5 years	$	881

Six Months Ended June 30,	Grantee Type	# of Restricted Stock Units Granted	Vesting Period	Grant Date Fair Value (in thousands)
2018	Trustee group	373,438	1-3 years	$	5,975
2018	Employee group	955,751	1-4 years	$	14,071
2017	Trustee group	18,348	2-3 years	$	199
2017	Employee group	137,003	5 years	$	1,840

Schedule of Stock Option Activity

The following tables provide a summary of option activity for the period ended June 30, 2018 and 2017:

Options	Shares (In thousands)		Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Terms (Years)
Outstanding as of December 31, 2017	5,478		$	9.72	6.0
Granted	—		—
Exercised	(1,735	)	9.65
Forfeited or expired	(91	)	9.81
Outstanding as of June 30, 2018	3,652		9.76		5.5
Exercisable as of June 30, 2018	3,111		$	9.72	4.9

Outstanding as of December 31, 2016	6,313		$	9.69	7.0
Granted	—		—
Exercised	—		—
Forfeited or expired	(536	)	8.79
Outstanding as of June 30, 2017	5,777		9.46		6.1
Exercisable as of June 30, 2017	3,539		$	9.68	4.8