Debt and Warrants - Warrant activity (Details) - shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Warrant Activity
Beginning balance	321,314	397,904
Warrants granted	2,166,588	106,376
Warrants exercised		(60,553)
Warrants cancelled	(60,249)	(122,413)
Ending balance	2,427,653	321,314