Summary of Significant Accounting Policies - Property and Equipment (Details) - Equipment	3 Months Ended	12 Months Ended
Mar. 31, 2017	Dec. 31, 2016
Minimum
Property and Equipment
Property, Plant and Equipment, Useful Life	3 years	3 years
Maximum
Property and Equipment
Property, Plant and Equipment, Useful Life	10 years	10 years

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration