Stock-Based Compensation and Stock Options (Tables)

12 Months Ended

Dec. 31, 2012

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

Schedule of Weighted-Average Assumptions used in Black-Scholes Option Pricing Model

The fair value of 2009 and 2012 stock options was estimated using the Black-Scholes option pricing model with the following weighted-average assumptions:

	2009			2012
Weighted-average fair value of options granted per share	$	11.56		$	19.08
Historical volatility	93		%	74		%
Risk-free interest rate	2.56		%	1.11		%
Dividend yield	—			—
Expected life in years	6.25			6.25

Schedule of Option Activity

Option activity as of December 31, 2012 and changes during the years ended December 31, 2010, 2011, and 2012 were as follows:

	Shares		Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Life	Aggregate Intrinsic Value
						(In thousands)
Outstanding at January 1, 2010	317,725		$	14.26	2.09 years	$	9,900
Outstanding at December 31, 2010	317,725		$	14.26	8.44 years	$	8,616
Exercisable and fully vested at December 31, 2010	17,725		$	2.28	0.95 years	$	693
Outstanding at January 1, 2011	317,725		$	14.26
Exercised	(17,725	)	$	2.28
Outstanding at December 31, 2011	300,000		$	14.97	7.89 years	$	2,883
Exercisable and fully vested at December 31, 2011	75,000		$	14.97	7.89 years	$	721
Outstanding at January 1, 2012	300,000		$	14.97
Options granted	100,000		$	28.98
Outstanding at December 31, 2012	400,000		$	18.47	7.43 years	$	1,206
Exercisable and fully vested at December 31, 2012	150,000		$	14.97	6.89 years	$	603

Schedule of Outstanding Options

Outstanding options at December 31, 2012 were as follows:

Exercise Price		Shares Outstanding	Options  Outstanding Weighted- Average Remaining Contractual Life	Weighted- Average Exercise Price		Shares Outstanding and Exercisable	Options  Exercisable Weighted- Average Remaining Contractual Life	Weighted- Average Exercise Price
$	14.97	300,000	6.89 years	$	14.97	150,000	6.89 years	$	14.97
$	28.98	100,000	9.07 years	$	28.98	—	9.07 years	$	28.98