Share-Based Compensation Arrangements (Tables)

3 Months Ended

Mar. 31, 2013

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

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

The fair value of each SAR was estimated as of March 31, 2013 and 2012 using the following assumptions:

	March 31, 2013		March 31, 2012
Risk-free interest rate	0.24%-0.48%		0.49%-0.98%
Dividend yield	0.0	%	0.0	%
Expected life (years)	1.9-3.8 years		2.9-4.8 years
Volatility	64.99	%	70.48	%