v2.4.0.6
Property and Equipment (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2011
Property, Plant and Equipment [Line Items]          
Property and equipment $ 42,012,000   $ 42,012,000   $ 34,345,000
Less: accumulated depreciation and amortization (25,116,000)   (25,116,000)   (20,484,000)
Property and equipment, net 16,896,000   16,896,000   13,861,000
Capital lease 8,053,000   8,053,000   8,053,000
Capital lease, accumulated depreciation 4,558,000   4,558,000   3,313,000
Depreciation and amortization expense 1,739,000 1,121,000 5,066,000 3,466,000  
Computer equipment
         
Property, Plant and Equipment [Line Items]          
Property and equipment 17,144,000   17,144,000   12,483,000
Computer software
         
Property, Plant and Equipment [Line Items]          
Property and equipment 5,913,000   5,913,000   5,720,000
Furniture, fixtures and equipment
         
Property, Plant and Equipment [Line Items]          
Property and equipment 1,438,000   1,438,000   1,330,000
Scanner appliances
         
Property, Plant and Equipment [Line Items]          
Property and equipment 15,894,000   15,894,000   13,394,000
Scanner applicances and other computer equipment subject to subscription
         
Property, Plant and Equipment [Line Items]          
Property and equipment, net 4,905,000   4,905,000   3,436,000
Scanner appliances and other computer equipment not placed in service
         
Property, Plant and Equipment [Line Items]          
Property and equipment 1,170,000   1,170,000   210,000
Leasehold improvements
         
Property, Plant and Equipment [Line Items]          
Property and equipment 1,623,000   1,623,000   1,418,000
Other fixed assets not placed in service
         
Property, Plant and Equipment [Line Items]          
Property and equipment $ 1,315,000   $ 1,315,000   $ 500,000