XML 39 R32.htm IDEA: XBRL DOCUMENT v2.4.0.6
Summary Of Significant Accounting Policies (Narrative) (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended 12 Months Ended 12 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2012
Y
Sep. 30, 2011
Dec. 31, 2011
Y
Sep. 30, 2012
Ecova [Member]
Dec. 31, 2008
Cadence Network [Member]
Dec. 31, 2009
Ecos [Member]
Dec. 31, 2010
The Loyalton Group [Member]
Dec. 31, 2011
Prenova [Member]
Sep. 30, 2012
Software Development Costs [Member]
Minimum [Member]
Sep. 30, 2012
Software Development Costs [Member]
Maximum [Member]
Sep. 30, 2012
LPB [Member]
Minimum [Member]
Sep. 30, 2012
LPB [Member]
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]                          
Owners percentage interest         79.00%                
Impairment loss pre-tax included in net loss on investments $ 2.4 $ 2.4                      
Investment portfolio percentage rated AA or higher   93.00%   88.00%                  
Proceeds from sales of available securities 32.0 103.5                      
Available for sale securities, gross realized gains $ 0.1 $ 0.3 $ 0                    
Average effective maturity, in years   1.8   1.3                  
Intangible assets amortization period, years           12 years 3 years 6 years 9 years 3 years 7 years 3 years 10 years