XML 48 R18.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stock-Based Compensation
3 Months Ended
Mar. 31, 2013
Stock-Based Compensation  
Stock-Based Compensation

Note 12. Stock-Based Compensation

 

The Company accounts for stock-based compensation to consultants, employees and directors by estimating the fair value of stock-based awards using the Black-Scholes option-pricing model and amortizing the fair value of the stock-based awards granted over the applicable vesting period. Total employee stock-based compensation expenses were $8.8 million for the three months ended March 31, 2013, compared to $6.8 million for the three months ended March 31, 2012.