Stockholders Equity (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Changes in Shares of Common Stock

Details of changes in shares of common stock outstanding are provided below.

	Years Ended December 31,
	2014	2013	2012
	(In thousands)
Common stock shares outstanding:
Shares outstanding at beginning of year	3,635	3,635	3,635
Shares exercised under stock option plan	1	—	—
Shares outstanding at end of year	3,636	3,635	3,635

Summary of Shares Available for Grant and Stock Option Activity

A summary of shares available for grant and stock option activity is detailed below.

		Options Outstanding
	Shares Available For Grant	Shares		Weighted-Average Exercise Price
Stock Options:
Balance at January 1, 2014	291,000	36,668		$	229.24
Exercised	—	(6,400	)	$	165.64
Forfeited	—	(500	)	$	255.13
Expired	—	—		$	—
Stock options granted	—	—		$	—
Balance at December 31, 2014	291,000	29,768		$	242.48

Schedule of Stock Appreciation Rights Activity

	Stock Appreciation Rights Outstanding
	Awards		Weighted-Average Exercise Price
Balance at January 1, 2014	99,461		$	156.93
Exercised	(3,425	)	$	119.87
Forfeited	(3,850	)	$	171.27
Granted	—		$	—
Balance at December 31, 2014	92,186		$	157.71

Summary of Information About Stock Options and SARs Outstanding

The following table summarizes information about stock options and SARs outstanding at December 31, 2014.

	Options and SARs Outstanding
	Number Outstanding		Weighted-Average Remaining Contractual Life	Number Exercisable
Exercise prices:
$255.13 (options)	21,768		3.3 years	17,415
$208.05 (options)	8,000		3.5 years	8,000
$236.00 (SARs)	250		3.6 years	200
$114.64 (SARs)	25,918		4.1 years	17,161
$132.56 (SARs)	30,518		7.0 years	8,904
$210.22 (SARs)	35,500		9.0 years	1,800
Totals	121,954			53,480
Aggregate intrinsic value
(in thousands)	$	11,079		$	4,812

Summary of Assumptions Employed Using Black-Scholes Option Pricing Model

In estimating the fair value of the options/SARs outstanding at December 31, the Company employed the Black-Scholes option pricing model with assumptions as detailed below.

	December 31, 2014		December 31, 2013
Expected term of options	3.3 to 9.0 years		0 to 10 years
Expected volatility:
Range	19.67% to 37.75%		21.03% to 42.71%
Weighted-average	22.91	%	30.50	%
Expected dividend yield	0.13	%	0.16	%
Risk-free rate:
Range	0.13% to 1.62%		0.12% to 3.93%
Weighted-average	0.56	%	2.10	%