Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Option Activity

The following table summarizes stock option activity for the year ended December 31, 2018 for employees:

	Options			Weighted Average Exercise price		Weighted Average Remaining Contractual Life (years)		Aggregate Intrinsic Value (000’s)
Outstanding at December 31, 2017		335,000		$	34.75
Granted		46,500
Exercised		(105,860	)
Forfeited		(9,330	)
Outstanding at December 31, 2018		266,310		$	38.93		4.6	$	5,289
Exercisable at December 31, 2018		8,830		$	43.01		3.1	$	113

Summary of Weighted Average Assumptions Used In Valuing Options

The following table summarizes the weighted average assumptions used in valuing options for the years ended December 31, 2018, 2017 and 2016:

	2018			2017			2016
Risk free interest rate		2.24	%		1.89	%		1.63	%
Expected life in years		4.2			4.5			4.5
Expected volatility		36.31	%		36.90	%		41.42	%
Dividend rate		—			—			—

Summary of Unvested Option

The following table summarizes the status of the Company’s unvested options as of December 31, 2018 and changes during the year ended December 31, 2018:

	Options			Weighted Average Grant-date Fair  Value
Unvested at December 31, 2017		309,720		$	12.38
Granted		46,500			23.74
Vested		(89,410	)		15.41
Forfeited		(9,330	)		13.00
Unvested at December 31, 2018		257,480		$	13.36

Summary of Restricted Stock Activity

The following table summarizes restricted stock activity during the year ended December 31, 2018:

	Shares			Weighted Average Grant-date Fair  Value
Restricted Stock at December 31, 2017		57,857		$	42.10
Granted		16,562			73.35
Vested		(2,896	)		47.46
Forfeited		(1,162	)		57.48
Restricted Stock at December 31, 2018		70,361		$	48.98