XML 39 R19.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stock-Based Compensation Stock-Based Compensation (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
 
2012
Expected volatility (range)
58% - 59%
Risk free interest rate (range)
0.795% - 1.025%
Expected dividends
3.75%
Weighted average expected term (years)
6