Share-Based Compensation Arrangements (Tables)

6 Months Ended

Jun. 30, 2013

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

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The fair value of each SAR was estimated as of June 30, 2013 and 2012 using the following assumptions:

	June 30, 2013		June 30, 2012
Risk-free interest rate	0.28%-0.84%		0.38%-0.63%
Dividend yield	0.0	%	0.0	%
Expected life (years)	1.7-3.5 years		2.7-4.5 years
Volatility	63.02	%	66.50	%