Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Cash Proceeds Received from Share-based Payment Awards

	Year Ended December 31,
	2017			2016		2015
	(Amounts in thousands)
Cash received from stock option exercises	$	2,162		$	1,632	2,111
Compensation cost, all share-based awards	60			142		5,208
Excess tax (expense) benefit, all share-based awards	(8		)	913		27

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The following table provides the assumptions used in the calculation of grant-date fair values of stock options awarded during 2013 based on the Black-Scholes option pricing model:

	2013
Weighted-average grant-date fair value	$7.11
Expected volatility	33.16% - 33.18%
Weighted-average expected volatility	33.17%
Risk-free interest rate	0.88% - 1.60%
Expected dividend yield	5.40% - 5.76%
Expected term in months	72

Summary of Stock Option Activity

The following table presents a summary of the stock option activity under the Company’s plans for the year ended December 31, 2017:

	Shares	Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value (in 000’s)
Outstanding at January 1, 2017	85,500	$	47.52
Granted	—	—
Exercised	(43,000)	$	50.28
Canceled or expired	—	$	—
Outstanding at December 31, 2017	42,500	$	44.72	3.0	$	371
Exercisable at December 31, 2017	42,500	$	44.72	3.0	$	371

Schedule of Options Authorized under Stock Option Plans, by Exercise Price Range

The following table presents information regarding stock options outstanding at December 31, 2017:

	Options Outstanding				Options Exercisable
Range of Exercise Prices	Number of Options	Weighted-Average Remaining Contractual Life (Years)	Weighted- Average  Exercise Price		Number of Options	Weighted- Average  Exercise Price
$33.61-$45.30	27,500	4.5	$	42.64	27,500	$	42.64
$47.61-$50.35	15,000	0.3	$	48.52	15,000	$	48.52

Summary of Grants

The following table presents the restricted stock unit grants summary at December 31, 2017:

	Grant Year
	2016	2015
Three-year performance period ending December 31,	2018	2017
Vesting shares, target (net of forfeited)	83,250	85,750
Vesting shares, maximum (net of forfeited)	156,094	160,781

Summary of Vested And Unvested RSU

The following table presents a summary of restricted stock unit awards activity, based on target vesting, during the years indicated:

	Year Ended December 31,
	2017				2016				2015
	Shares		Weighted- Average Fair Value per Share		Shares		Weighted- Average  Fair Value per Share		Shares	Weighted- Average  Fair Value per Share
Outstanding at January 1	271,000		$	51.09	263,250		$	45.94	167,000	$	41.15
Granted	—		—		95,750		$	53.49	100,250	$	53.80
Vested	(82,000	)	$	45.17	(78,500	)	$	36.82	—	—
Forfeited/Canceled	(20,000	)	$	53.62	(9,500)		$	50.46	(4,000)	$	43.10
Expired	—		—		—		—		—	—
Outstanding at December 31	169,000		$	53.66	271,000		$	51.09	263,250	$	45.94