Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary Information for Stock Options

The following table includes summary information for stock options as of December 31, 2014:

	Number of Options			Weighted- Average Exercise Price		Weighted-Average Remaining Contractual Life (years)
Outstanding at January 1, 2014		882,416		$	102.74
Granted		55,981		$	121.00
Granted - Replacement Options		821,282		$	56.66
Exercised		(697,154	)	$	59.98
Terminated		(8,090	)	$	45.12
Outstanding at December 31, 2014		1,054,435		$	96.53		3.5
Exercisable at December 31, 2014		906,719		$	95.67		2.8

Summary of Information for Incentive Compensation Awards and Restricted Stock Awards

The following table summarizes information for incentive compensation awards and restricted stock awards as of December 31, 2014:

	Incentive Compensation					Restricted Stock
	Number of Awards			Weighted- Average Grant-Date Fair Value		Number of Awards			Weighted- Average Grant-Date Fair Value
January 1, 2014		25,131		$	88.51		197,049		$	87.91
Awarded		13,964		$	109.17		168,509		$	126.88
Distributed		(11,293	)	$	81.91		(28,624	)	$	95.79
Forfeited		(194	)	$	95.73		(1,316	)	$	97.37
December 31, 2014		27,608		$	101.61		335,618		$	106.77

Schedule of Stock-Based Compensation Expense

The following table summarizes stock-based compensation expense for the years ended December 31, 2014, 2013 and 2012, unrecognized compensation cost for nonvested awards at December 31, 2014 and the weighted-average period over which unrecognized compensation cost is expected to be recognized:

(add 000, except year data)	Stock Options		Restricted Stock		Incentive Compensation		Directors’ Awards		Total
Stock-based compensation expense recognized for years    ended December 31:
2014	$	2,020	$	6,189	$	257	$	527	$	8,993
2013	$	1,734	$	4,377	$	229	$	668		7,008
2012	$	1,835	$	4,980	$	237	$	729		7,781
Unrecognized compensation cost at December 31, 2014:	$	2,241	$	20,096	$	241	$	-	$	22,578
Weighted-average period over which unrecognized    compensation cost will be recognized:	2.0 years		3.6 years		1.6 years			—

Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block]

The following presents expected stock-based compensation expense in future periods for outstanding awards as of December 31, 2014:

(add 000)
2015	$	8,407
2016		6,182
2017		3,482
2018		2,743
2019		1,764
Total	$	22,578