Share-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2019

Shares awarded to non-employee directors [Line Items]

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan

The table below presents the amounts included in net income related to share-based compensation expense for the three and six months ended June 30, 2019 and 2018:

    

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2019			2018			2019			2018
(in thousands)
Awards to non-employee directors	$	157		$	135		$	305		$	269
Awards to key employees	452			1,190			790			2,575
Total compensation expense	609			1,325			1,095			2,844
Less: tax benefit	(158		)	(363		)	(285		)	(779		)
Share-based compensation amounts included in net income	$	451		$	962		$	810		$	2,065

Awards to non-employee directors [Member]

Shares awarded to non-employee directors [Line Items]

Schedule of Share-based Compensation, Activity

	Number of Shares		Weighted Average Fair Value
Outstanding—December 31, 2018	—		$	—
Granted	6,759		$	93.14
Vested	(6,759	)	$	93.14
Outstanding—June 30, 2019	—		$	—

Award to key employees [Member]

Shares awarded to non-employee directors [Line Items]

Schedule of Share-based Compensation, Activity

The table below presents the summary of the stock activity for awards to key employees for the six months ended June 30, 2019: 

	Number of Shares		Weighted Average Fair Value
Outstanding—December 31, 2018	131,741		$	67.24
Granted	45,016		$	91.19
Vested	(25,831	)	$	67.08
Expired	(15,086	)	$	69.28
Outstanding—June 30, 2019	135,840		$	74.05