Quarterly report pursuant to Section 13 or 15(d)

Acquisitions Acquisitions (Identifiable Intangible Assets) (Details)

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Acquisitions Acquisitions (Identifiable Intangible Assets) (Details) (Highland Capital Brokerage, Inc. (Highland), USD $)
In Thousands, unless otherwise specified
0 Months Ended
Jul. 31, 2014
Acquired Indefinite-lived Intangible Assets [Line Items]  
Identifiable intangible assets $ 38,045
Technology
 
Acquired Indefinite-lived Intangible Assets [Line Items]  
Identifiable intangible assets 972
Useful Life 4 years
Relationships with customers
 
Acquired Indefinite-lived Intangible Assets [Line Items]  
Identifiable intangible assets 1,914
Relationships with customers | Minimum
 
Acquired Indefinite-lived Intangible Assets [Line Items]  
Useful Life 11 years 1 month 6 days
Relationships with customers | Maximum
 
Acquired Indefinite-lived Intangible Assets [Line Items]  
Useful Life 25 years
Renewals revenue
 
Acquired Indefinite-lived Intangible Assets [Line Items]  
Identifiable intangible assets 30,337
Useful Life 8 years
Trade names
 
Acquired Indefinite-lived Intangible Assets [Line Items]  
Identifiable intangible assets 1,711
Useful Life 9 years
Non-solicitation agreement
 
Acquired Indefinite-lived Intangible Assets [Line Items]  
Identifiable intangible assets $ 3,111
Useful Life 3 years