Quarterly report pursuant to Section 13 or 15(d)

Property, Equipment and Software - Additional Information (Details)

v3.5.0.2
Property, Equipment and Software - Additional Information (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Property, Plant and Equipment [Line Items]          
Depreciation and amortization expense for property, equipment and software $ 6,500,000 $ 5,200,000 $ 11,900,000 $ 10,200,000  
Carrying amount of capitalized software development costs 47,500,000   47,500,000   $ 41,200,000
Accumulated depreciation of capitalized software development costs 16,500,000   16,500,000   14,000,000
Net carrying value 114,757,000   114,757,000   $ 82,198,000
Asset charge     0 527,000  
Disposal of fixed assets   300,000      
Software          
Property, Plant and Equipment [Line Items]          
Depreciation and amortization expense for property, equipment and software 1,400,000 800,000 2,600,000 1,500,000  
Software | Product Development          
Property, Plant and Equipment [Line Items]          
Impairment loss $ 0 200,000 $ 0 $ 800,000  
Leasehold improvements | General and Administrative Expense [Member]          
Property, Plant and Equipment [Line Items]          
Asset charge   $ 1,500,000