Stockholders' Deficit (Details) - shares	Dec. 31, 2015	Dec. 31, 2014
Stockholders' Deficit
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares outstanding	0	0
Common stock, shares authorized	400,000,000	400,000,000
Stock reserved for future issuance (in shares)	12,595,671