Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2019

Share-Based Compensation

Schedule of stock option activity

				Weighted
		Weighted		Average	Aggregate
		Average		Remaining	Intrinsic
	Shares	Price		(Yrs.)	(000's)
Outstanding at January 1, 2019	213,866	$	61.28
Granted	—		—
Exercised	(12,722)		31.62
Outstanding at June 30, 2019	201,144		63.16	5.39	$	3,201
Exercisable at June 30, 2019	155,472		56.07	4.63	$	3,137
Weighted-average fair value of options granted during the year	$0.00

Schedule of weighted-average assumptions used in valuing options

	Six months ended June 30,
	2019		2018
Dividend yield	—	%	1.46	%
Expected life	—	years	8.5	years
Expected volatility	—	%	28.0	%
Risk-free interest rate	—	%	2.54	%

Summary of nonvested restricted stock

Nonvested restricted stock for the six months ended June 30, 2019 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, 2019	104,419	$	62.45
Granted	8,934		73.34
Vested	(26,514)		74.29
Forfeited	(2,332)		73.89
Nonvested at June 30, 2019	84,507		59.57

Summary of nonvested RSUs

Nonvested RSUs for the six months ended June 30, 2019 is summarized in the following table.

		Weighted-
		Average
		Grant-Date
Restricted Stock Units	Shares	Fair Value
Nonvested at January 1, 2019	200,540	$	85.10
Granted	152,564		67.83
Forfeited	(1,651)		89.43
Nonvested at June 30, 2019	351,453		77.58