Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2018

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

Summary of Restricted Share Activity

A summary of restricted share and performance share activity for the year ended December 31, 2018 is as follows:

	Time-Based				Performance-Based
	Number of Shares		Weighted Average Grant Date Fair Value		Number of Shares		Weighted Average Grant Date Fair Value
	(in whole shares)				(in whole shares)
Outstanding — beginning of year	342,859		$	34.71	165,000		$	38.10
Granted(a)	249,700		39.53		—		—
Vested	(164,778	)	39.99		(55,000	)	38.10
Performance- to time-based(b)	110,000		38.10		(110,000	)	38.10
Canceled or expired	(7,834	)	38.93		—		—
Outstanding — end of year	529,947		$	34.71	—		$	38.10

(a) Included in the granted amount are 4,600 restricted share units.

(b) During the second quarter of 2018, 55,000 of the performance-based restricted shares granted in 2017 fully vested based on achievement of the performance criteria. In accordance with the grant agreements, the remaining 110,000 shares became time-based, vesting over the remaining two years of the requisite service period.