Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2014

Stock-Based Compensation [Abstract]

Summary of Restricted Stock Activity

Following is a summary of the activity of the restricted stock:

	Six Months Ended
	June 30, 2014
	Shares		Fair Value
Balance at December 31, 2013	58,649		$	37.45
Granted	21,990		$	59.24
Vested	(29,954	)	$	35.27
Balance at June 30, 2014	50,685		$	48.19

Summary of SARs Activity

Following is a summary of the activity of the Company's SARs program for the six-month period ended June 30, 2014:

			Weighted-		Average	Aggregate
			Average		Remaining	Intrinsic
			Exercise		Contractual	Value
	Shares		Price		Term Years	(In thousands)
Outstanding at December 31, 2013	343,445		$	32.01	7.33	$	12,137
Granted	37,213		$	61.64
Exercised	(7,605	)	$	34.77
Outstanding at June 30, 2014	373,053		$	34.91	7.10	$	5,435
Exercisable at June 30, 2014	248,071		$	29.40	6.27	$	4,982

Summary of Non-vested SARs Activity

Following is a summary of the activity of the non-vested SARs during the six-month period ended June 30, 2014:

			Weighted-Average
	Shares		Grant Date Fair Value
Non-vested at December 31, 2013	177,128		$	37.11
Granted	37,213		$	61.64
Vested	(89,359	)	$	35.09
Non-vested at June 30, 2014	124,982		$	45.85

Schedule of Assumptions used in SARs Granted

Following are the assumptions used to estimate the per-share fair value of SARs granted:

	Six Months Ended June 30,
	2014		2013
Risk-free interest rate	2.38	%	1.29	%
Expected life	7 yrs.		7 yrs.
Expected volatility	28.11	%	28.72	%
Expected dividend yield	1.30	%	1.71	%