Quarterly report pursuant to Section 13 or 15(d)

Property and Equipment (Details)

v2.4.0.6
Property and Equipment (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Dec. 31, 2011
Cost:    
Property and equipment, gross $ 32,107 $ 28,086
Less accumulated depreciation and amortization (19,730) (16,995)
Property and equipment, net 12,377 11,091
Office furniture and fixtures [Member]
   
Cost:    
Property and equipment, gross 3,338 2,713
Computer equipment and software [Member]
   
Cost:    
Property and equipment, gross 20,831 18,942
Other office Equipment [Member]
   
Cost:    
Property and equipment, gross 598 598
Leasehold improvements [Member]
   
Cost:    
Estimated Useful Life Shorter of the term of the lease or useful life of the asset  
Property and equipment, gross $ 7,340 $ 5,833
Minimum [Member] | Office furniture and fixtures [Member]
   
Cost:    
Estimated Useful Life 5 years  
Minimum [Member] | Computer equipment and software [Member]
   
Cost:    
Estimated Useful Life 3 years  
Minimum [Member] | Other office Equipment [Member]
   
Cost:    
Estimated Useful Life 5 years  
Maximum [Member]
   
Cost:    
Estimated Useful Life 7 years