Stock Compensation (Tables)

3 Months Ended

Mar. 31, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Nonvested Shares Related to the 2007 Plan

A summary of the status and changes of the Company’s nonvested shares related to the 2007 Plan and the 2017 Plan, as of and for the three months ended March 31, 2018 is presented below:

	Shares			Weighted Average Grant-Date Fair Value
Nonvested at December 31, 2017		2,303,557		$	26.25
Granted		1,637,500			39.00
Vested		(537,500	)		18.93
Cancelled		(18,333	)		30.89
Nonvested at March 31, 2018		3,385,224			33.55