Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2014

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 [Table Text Block]

The table below presents the amounts included in net income related to share-based compensation expense for the three and nine months endedSeptember 30, 2014 and 2013:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2014		2013		2014		2013
(in thousands)
Awards to non-employee directors	$	137	$	124	$	394	$	354
Awards to key employees	317		261		1,125		892
Total compensation expense	454		385		1,519		1,246
Less: tax benefit	183		155		612		502
Share-Based Compensation amounts included in net income	$	271	$	230	$	907	$	744

Awards to non-employee directors [Member]

Shares awarded to non-employee directors [Line Items]

Schedule of Share-based Compensation, Activity [Table Text Block]

	Number of Shares	Weighted Average Grant date Fair Value
Outstanding - December 31, 2013	—	$	—
Granted	13,299	$	41.33
Vested	13,299	$	41.33
Outstanding - September 30, 2014	—	$	—

Award to key employees [Member]

Shares awarded to non-employee directors [Line Items]

Schedule of Share-based Compensation, Activity [Table Text Block]

The table below presents the summary of the stock activity for awards to key employees for the nine months ended September 30, 2014:

	Number of Shares	Weighted Average Fair Value
Outstanding—December 31, 2013	121,142	$	28.20
Granted	41,442	$	39.99
Vested	39,546	$	26.87
Outstanding—September 30, 2014	123,038	$	32.60