Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2016

Share-Based Compensation

Schedule of stock option activity

				Weighted
		Weighted		Average	Aggregate
		Average		Remaining	Intrinsic
	Number of	Exercise		Contractual Life	Value
	Shares	Price		(Yrs.)	(000's)
Outstanding at  January 1	285,405	$	38.85
Granted	25,682		63.79
Exercised	(43,991)		33.96
Forfeited	(1,025)		35.20
Outstanding at September 30	266,071		42.08	4.77	$	8,771
Exercisable at September 30	205,294		36.34	3.70	$	7,945
Weighted-average fair value of options granted during the year	$ 25.19

Schedule of weighted-average assumptions used in valuing options

	Nine months ended September 30,
	2016		2015
Dividend yield	1.60	%	1.40	%
Expected life	8.5	years	8.5	years
Expected volatility	40.6	%	40.9	%
Risk-free interest rate	1.90	%	1.79	%

Summary of nonvested restricted stock

Nonvested restricted stock for the nine months ended September 30, 2016 is summarized in the following table.  All information has been retroactively adjusted for stock dividends and stock splits.

		Weighted-
		Average
		Grant-Date
Restricted Stock	Shares	Fair Value
Nonvested at January 1 2016	218,282	$	44.56
Granted	41,505		67.18
Vested	(70,547)		39.94
Forfeited	(2,075)		58.93
Nonvested at September 30, 2016	187,165		51.23

Summary of nonvested RSUs

Nonvested RSUs for the nine months ended September 30,  2016 is summarized in the following table.

		Weighted-
		Average
		Grant-Date
Restricted Stock Units	Shares	Fair Value
Nonvested at January 1, 2016	79,789	$	64.66
Granted	68,842		65.23
Vested	(2,314)		54.00
Forfeited	(639)		63.93
Nonvested at September 30, 2016	145,678		65.11