XML 48 R44.htm IDEA: XBRL DOCUMENT v2.4.0.6
Summary of Significant Accounting Policies (Details)
 12 Months Ended
Dec. 31, 2011
Y
M
segment
region
D
Types
Dec. 31, 2010
Y
Financial Statement Presentation    
Maximum ownership percentage 20.00%  
Royalty Revenue    
Number of days licensees have after the end of the quarter to provide notification of royalty revenue 60  
Number of days licensees have after the end of the quarter to provide payment of royalty revenue 60  
Number of days licensees have after the end of the quarter to provide payment of fixed royalty revenue 45  
The number of types of royalty revenue streams 2  
Intangible Assets    
Minimum useful life (in years) 1 1
Maximum useful life (in years) 10 10
Stock-Based Compensation and Equity Incentive Plans    
Discount from the fair market value (as a percent) 15.00%  
Cash and Cash Equivalents    
Maximum original maturity of cash equivalents (in months) 3  
Segment Reporting    
Number of reportable segments 1  
Number of geographic regions 3