Share-based Compensation (Tables)

12 Months Ended

Dec. 31, 2018

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

Schedule of Share-based Payment Award, Valuation Assumptions

The following table includes the weighted- average assumptions used in estimating the fair values and the resulting weighted-average fair value of stock options granted in the periods presented:

	Year Ended December 31, 2018			Year Ended December 31, 2017			Year Ended December 31, 2016
Weighted average fair values of stock options granted	$	11.80		$	15.38		$	19.50
Expected volatility	35.7		%	37.9		%	55.5		%
Expected dividends	.70		%	.56		%	.61		%
Weighted average risk-free interest rate	2.47		%	1.64		%	1.40		%
Expected life of stock options (in years)	3.5			3.5			3.5

Schedule of Stock Options Activity

A summary of stock option activity for the years ended December 31, 2018, 2017 and 2016 is as follows:

	Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value
						(in thousands)
Outstanding at January 1, 2016	139,878		$	15.17	2.32	$	2,465
Granted	42,000		$	49.22
Exercised	(72,379	)	$	11.38
Canceled	—
Outstanding at December 31, 2016	109,499		$	30.73	3.28	$	2,882
Granted	42,000		$	53.90
Exercised	(3,500	)	$	14.90
Canceled	—
Outstanding at December 31, 2017	147,999		$	37.68	2.94	$	6,152
Granted	42,000		$	42.56
Exercised	(27,999	)	$	15.65
Canceled	—
Outstanding at December 31, 2018	162,000		$	42.75	3.05	$	—
Exercisable at December 31, 2018	80,250		$	38.21	2.00	$	49

Schedule of Nonvested Share Activity

A summary of non-vested options and changes for the years ended December 31, 2018, 2017 and 2016 is as follows:

	Non-Vested Number of Shares		Weighted Average Exercise Price
Non-vested balance at January 1, 2016	75,750		$	19.27
Granted	42,000		$	49.22
Vested	(43,125	)	$	18.89
Canceled	—		$	—
Non-vested balance at December 31, 2016	74,625		$	36.35
Granted	42,000		$	53.90
Vested	(40,125	)	$	32.54
Canceled	—		$	—
Non-vested balance at December 31, 2017	76,500		$	47.99
Granted	42,000		$	42.56
Vested	(36,750	)	$	43.52
Canceled	—		$	—
Non-vested balance at December 31, 2018	81,750		$	47.21

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

The following table summarizes information about stock options outstanding by price range as of December 31, 2018:

	Options Outstanding				Options Exercisable
Exercise Prices	Number Outstanding	Weighted-Average Remaining Contractual Life (Years)	Weighted-Average Exercise Price		Number of Shares	Weighted-Average Exercise Price
$21.19	30,000	0.19	$	3.93	30,000	$	7.92
$28.59	6,000	0.05	$	1.06	5,625	$	2.00
$42.56	42,000	1.30	$	11.03	—	$	—
$49.22	42,000	0.61	$	12.76	28,875	$	17.71
$53.90	42,000	0.91	$	13.97	15,750	$	10.58
	162,000	3.05	$	42.75	80,250	$	38.21

Schedule of Nonvested Restricted Stock Activity

A summary of the status of the Company’s non-vested restricted stock grant shares is presented in the following table:

	Shares		Weighted-Average Grant Date Fair Value
Non vested at January 1, 2016	203,314		$	25.56
Granted	26,119		$	44.79
Vested	(101,441	)	$	23.25
Forfeited	(4,338	)	$	35.54
Non vested at December 31, 2016	123,654		$	31.17
Granted	56,251		$	56.75
Vested	(72,810	)	$	29.50
Forfeited	—		$	—
Non vested at December 31, 2017	107,095		$	45.74
Granted	5,623		$	76.47
Vested	(68,788	)	$	40.67
Forfeited	(3,514	)	$	46.24
Non vested at December 31, 2018	40,416		$	58.60