Net Loss per Share (Details) - shares	1 Months Ended			12 Months Ended
	Dec. 31, 2017	Mar. 31, 2017	Feb. 29, 2016	Dec. 31, 2017	Dec. 31, 2016
Potentially dilutive securities
Anti-dilutive common stock equivalent shares				5,130,247	4,234,421
Restricted Stock
Potentially dilutive securities
Anti-dilutive common stock equivalent shares				513,225	822,638
Outstanding stock options
Potentially dilutive securities
Anti-dilutive common stock equivalent shares				4,372,126	3,411,783
Convertible notes
Potentially dilutive securities
Anti-dilutive common stock equivalent shares				244,896
Initial Public Offering
Potentially dilutive securities
Number of common stock issued	2,265,500	4,600,000	6,785,000