XML 20 R55.htm IDEA: XBRL DOCUMENT v2.4.0.6
Property And Equipment (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 89,383,000 $ 64,392,000  
Less: accumulated depreciation (40,320,000) (29,995,000)  
Property, Plant and Equipment, Net 49,063,000 34,397,000  
Depreciation 14,500,000 9,400,000 9,100,000
Equipment [Member]
     
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 2,430,000 2,809,000  
Computer Hardware [Member]
     
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 56,969,000 39,665,000  
Computer Software [Member]
     
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 17,540,000 9,660,000  
Construction in Progress [Member]
     
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 1,854,000 3,836,000  
Estimated useful life (years) 0    
Furniture and Fixtures [Member]
     
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross 5,486,000 5,028,000  
Leasehold Improvements [Member]
     
Property, Plant and Equipment [Line Items]      
Property, Plant and Equipment, Gross $ 5,104,000 $ 3,394,000  
Estimated useful life (years) term of lease    
Minimum [Member] | Equipment [Member]
     
Property, Plant and Equipment [Line Items]      
Estimated useful life 3 years    
Minimum [Member] | Computer Hardware [Member]
     
Property, Plant and Equipment [Line Items]      
Estimated useful life 3 years    
Minimum [Member] | Computer Software [Member]
     
Property, Plant and Equipment [Line Items]      
Estimated useful life 3 years    
Minimum [Member] | Furniture and Fixtures [Member]
     
Property, Plant and Equipment [Line Items]      
Estimated useful life 5 years    
Maximum [Member] | Equipment [Member]
     
Property, Plant and Equipment [Line Items]      
Estimated useful life 5 years    
Maximum [Member] | Computer Hardware [Member]
     
Property, Plant and Equipment [Line Items]      
Estimated useful life 5 years    
Maximum [Member] | Computer Software [Member]
     
Property, Plant and Equipment [Line Items]      
Estimated useful life 5 years    
Maximum [Member] | Furniture and Fixtures [Member]
     
Property, Plant and Equipment [Line Items]      
Estimated useful life 7 years