Share-Based Payment Arrangements (Tables)

6 Months Ended

Jun. 30, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Option Activity

						Weighted
				Weighted		Average
				Average		Remaining		Aggregate
	Number of			Exercise		Contractual		Intrinsic
Options	Shares			Price		Term (Years)		Value ($000)
Outstanding at January 1, 2019		46,865		$	31.88		2.6	$	164
Exercised/Released		(11,804	)		31.14				105
Cancelled/Forfeited		—			—				—
Expired		—			—				—
Outstanding at June, 2019		35,061		$	32.13		2.0	$	278
Exercisable at June 30, 2019		35,061		$	32.13		2.0	$	278

Summary of Nonvested Restricted and Performance Shares

				Weighted
				Average
	Number of			Grant Date
	Shares			Fair Value
Nonvested at January 1, 2019		1,494,041		$	39.89
Granted		94,907			35.80
Vested		(20,290	)		42.61
Forfeited		(23,782	)		38.62
Nonvested at June 30, 2019		1,544,876		$	39.62