Warrants (Tables)

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Summary of Warrants Issued and Outstanding

The following table summarizes the Company's issued and outstanding warrants:

	Expiration Date	Exercise Price		Warrants Outstanding as of December 31, 2019	Warrants Outstanding as of December 31, 2018
Trinity - September 2018	9/25/2025	$	3.59	75,000	75,000
PIPE Financing - Series B - August 2016	8/19/2021	$	31.00	195,906	195,906
Amendment to Hercules Term Loan - June 2015	6/23/2020	$	147.40	2,035	2,035
Hercules Term Loan - June 2014	1/27/2020	$	176.80	1,583	1,583
Total				274,524	274,524