v2.4.0.8
Property and Equipment (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Property, Plant and Equipment [Line Items]          
Property and Equipment, Gross $ 71,279,000   $ 71,279,000   $ 67,209,000
Accumulated Depreciation (37,787,000)   (37,787,000)   (33,102,000)
Property and equipment, net 33,492,000   33,492,000   34,107,000
Depreciation expense 2,600,000 2,200,000 8,200,000 5,700,000  
Equipment [Member]
         
Property, Plant and Equipment [Line Items]          
Property and Equipment, Gross 35,483,000   35,483,000   32,528,000
Furniture and Fixtures [Member]
         
Property, Plant and Equipment [Line Items]          
Property and Equipment, Gross 5,149,000   5,149,000   5,126,000
Leasehold Improvements [Member]
         
Property, Plant and Equipment [Line Items]          
Property and Equipment, Gross 7,356,000   7,356,000   6,992,000
Software [Member]
         
Property, Plant and Equipment [Line Items]          
Property and Equipment, Gross 19,800,000   19,800,000   19,870,000
Construction in Progress [Member]
         
Property, Plant and Equipment [Line Items]          
Property and Equipment, Gross $ 3,491,000   $ 3,491,000   $ 2,693,000