Annual report pursuant to Section 13 and 15(d)

Acquisitions (Details 2)

v2.4.0.6
Acquisitions (Details 2) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 1 Months Ended 1 Months Ended 1 Months Ended
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2010
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2010
Apr. 30, 2012
Policy Studies, Inc
Sep. 30, 2012
Policy Studies, Inc
Feb. 28, 2010
DeltaWare
Feb. 10, 2010
DeltaWare
Apr. 30, 2012
Customer relationships
Policy Studies, Inc
Apr. 30, 2012
Customer relationships
Policy Studies, Inc
Minimum
Apr. 30, 2012
Customer relationships
Policy Studies, Inc
Maximum
Apr. 30, 2012
Tradename
Policy Studies, Inc
Feb. 28, 2010
Tradename
DeltaWare
Feb. 10, 2010
Tradename
DeltaWare
Apr. 30, 2012
Technology-based intangible assets
Policy Studies, Inc
Apr. 30, 2012
Technology-based intangible assets
Policy Studies, Inc
Minimum
Apr. 30, 2012
Technology-based intangible assets
Policy Studies, Inc
Maximum
Feb. 28, 2010
Technology-based intangible assets
DeltaWare
Feb. 10, 2010
Technology-based intangible assets
DeltaWare
Feb. 10, 2010
Customer contracts and relationships
DeltaWare
Feb. 28, 2010
Customer contracts and relationships
DeltaWare
Minimum
Feb. 28, 2010
Customer contracts and relationships
DeltaWare
Maximum
Feb. 28, 2010
Non-compete arrangements
DeltaWare
Feb. 10, 2010
Non-compete arrangements
DeltaWare
Intangible assets acquired                                                              
Useful life                       6 years 9 months 18 days   8 years 7 months 6 days     7 years 8 years 5 years 10 years     1 year 5 years 8 years 6 months     8 years 10 years 4 years  
Fair value                       $ 22,183     $ 6,060 $ 16,600     $ 3,800   $ 614 $ 1,783       $ 3,733 $ 1,474       $ 239
Fair value of the future estimated obligation related contract                             3,015                                
Revenue and net income                                                              
Revenue 300,736 266,353 243,452 239,603 250,107 238,296 227,116 214,114 1,050,145 929,633 831,749   60,100                                    
Operating income $ 39,973 $ 33,299 $ 27,398 $ 26,905 $ 34,836 $ 30,779 $ 29,494 $ 27,292 $ 127,575 $ 122,401 $ 107,406