Share-Based Payment Arrangements (Tables)

3 Months Ended

Mar. 31, 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	(256,611)		33.71			3,270
Cancelled/Forfeited	(538)		32.09			6
Expired	(689)		44.91
Outstanding at March 31, 2017	198,420	$	38.74	2.91	$	1,728
Exercisable at March 31, 2017	177,151	$	39.83	2.64	$	1,392

Summary of Nonvested Restricted and Performance Shares

			Weighted
			Average
	Number of		Grant Date
	Shares		Fair Value
Nonvested at January 1, 2017	2,152,119	$	32.12
Granted	49,558		40.82
Vested	(9,607)		31.81
Forfeited	(20,446)		32.51
Nonvested at March 31, 2017	2,171,624	$	32.32