Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details Textual)

v2.4.0.6
Summary of Significant Accounting Policies (Details Textual) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Customer
SourcesRevenue
Sep. 30, 2011
Customer
Sep. 30, 2012
Customer
SourcesRevenue
Sep. 30, 2011
Customer
Dec. 31, 2011
Summary of Significant Accounting Policies (Textual) [Abstract]          
Net long-lived assets, North America $ 33.5   $ 33.5   $ 26.4
Net long-lived assets, International subsidiaries $ 2.7   $ 2.7   $ 1.6
Primary sources of revenue 3   3    
Revenue recognition access period 4 years   4 years    
Renewal of additional term license 1 year   1 year    
Customers contribution to revenue     5.00%    
Number of customer accounted for more than 5% revenue 0 0 0 0