Stock Based Compensation (Tables)

12 Months Ended

Dec. 31, 2013

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

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

Following is a summary of stock option activity for the year ended December 31, 2013, relating to the stock options awarded under the 2009 LTIP and the 1993 Plan:

	Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value (a) (In thousands)
Options outstanding at December 31, 2012	1,784,209		$	24.17	5.59	$	14,495
Granted	367,250		23.66
Exercised	(184,832	)	14.15
Forfeited	(64,950	)	27.90
Options outstanding at December 31, 2013	1,901,677		$	24.91	5.58	$	11,918
Options vested or expected to vest at December 31, 2013	1,915,574		$	24.72	5.54	$	12,314
Options exercisable at December 31, 2013	1,303,547		$	26.58	4.28	$	7,697

(a)Intrinsic value is defined as the amount by which the fair value of the underlying common shares exceeds the exercise price of the option.

Five Year Service Stock Options [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The fair value of our five-year service stock options granted during the years ended December 31, 2013, 2012 and 2011 was established at the date of grant using the Black-Scholes pricing model, with the weighted average assumptions as follows:

	Year Ended December 31,
	2013			2012			2011
Risk-free interest rate	0.88		%	0.82		%	2.39		%
Expected volatility	56.70		%	53.08		%	48.00		%
Expected term (in years)	5.5			5.5			5.5
Weighted average grant date fair value of options granted during the period	$	11.97		$	5.85		$	6.58