Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2014
Building
Property, Plant and Equipment [Line Items]
Useful lives of property, plant and equipment	5 years
Furniture, fixtures and equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful lives of property, plant and equipment	3 years
Furniture, fixtures and equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful lives of property, plant and equipment	5 years
Computer hardware and software | Minimum
Property, Plant and Equipment [Line Items]
Useful lives of property, plant and equipment	3 years
Computer hardware and software | Maximum
Property, Plant and Equipment [Line Items]
Useful lives of property, plant and equipment	5 years