Share-based Compensation (Tables)

6 Months Ended

Jun. 30, 2018

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

Nonvested Restricted Shares and RSUs Activity

The following table summarizes nonvested restricted shares and RSUs activity for the six months ended June 30, 2018:

Nonvested restricted shares and RSUs	Shares	Weighted-average grant date fair value
Nonvested at December 31, 2017	2,340,892	$	15.08
Forfeited	146,564	20.94
Vested	431,961	16.18
Granted	636,322	17.07
Nonvested at June 30, 2018	2,398,689	$	15.05