Share-Based Payment Arrangements (Tables)

6 Months Ended

Jun. 30, 2017

Share-Based Payment Arrangements [Abstract]

Summary of Option Activity

				Weighted
				Average
		Weighted		Remaining
		Average		Contractual	Aggregate
	Number of	Exercise		Term	Intrinsic
Options	Shares	Price		(Years)	Value ($000)
Outstanding at January 1, 2017	456,258	$	35.91		$	3,734
Exercised/Released	(330,644)		34.56			4,065
Cancelled/Forfeited	(538)		32.09			6
Expired	(2,570)		64.74
Outstanding at June 30, 2017	122,506	$	38.98	2.80	$	1,507
Exercisable at June 30, 2017	122,506	$	38.98	2.80	$	1,507

Summary of Nonvested Restricted and Performance Shares

			Weighted
			Average
	Number of		Grant Date
	Shares		Fair Value
Nonvested at January 1, 2017	2,152,119	$	32.15
Granted	61,099		42.09
Vested	(201,137)		30.18
Forfeited	(38,670)		32.37
Nonvested at June 30, 2017	1,973,411	$	32.65