Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Property and Equipment (Details)

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Summary of Significant Accounting Policies - Property and Equipment (Details)
6 Months Ended
Jun. 30, 2017
Furniture and office equipment  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, useful life 5 years
Computer equipment and software costs | Minimum  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, useful life 3 years
Computer equipment and software costs | Maximum  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, useful life 5 years
Leasehold improvements  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, useful life 5 years
Automobiles  
Property, Plant and Equipment [Line Items]  
Property, plant and equipment, useful life 5 years