Potentially Dilutive Securities - Computation of Basic and Diluted Net Losses Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share Disclosure
Net loss		$ (10,616)	$ (2,973)
Less: deemed dividend on warrants and preferred stock		(308)
Net loss from operations attributable to common shareholders		$ (10,924)	$ (2,973)
Basic and diluted shares of weighted average shares outstanding		6,276,012	617,357
Basic and diluted net loss per share	[1]	$ (1.74)	$ (4.82)
Net loss per share data presented excludes from the calculation of diluted net loss the following potentially dilutive securities, as they had an anti-dilutive impact:
Total number of potentially dilutive instruments, excluded from the calculation of net loss per share		25,252,316	2,496,084
Convertible Preferred Stock [Member]
Net loss per share data presented excludes from the calculation of diluted net loss the following potentially dilutive securities, as they had an anti-dilutive impact:
Total number of potentially dilutive instruments, excluded from the calculation of net loss per share		802,079	2,121,443
Vested and unvested options outstanding to purchase an equal number of shares of Common Stock of the Company [Member]
Net loss per share data presented excludes from the calculation of diluted net loss the following potentially dilutive securities, as they had an anti-dilutive impact:
Total number of potentially dilutive instruments, excluded from the calculation of net loss per share		45,964	49,167
Unvested Restricted Stock Units ("RSU") [Member]
Net loss per share data presented excludes from the calculation of diluted net loss the following potentially dilutive securities, as they had an anti-dilutive impact:
Total number of potentially dilutive instruments, excluded from the calculation of net loss per share		20,000	18,417
Warrants
Net loss per share data presented excludes from the calculation of diluted net loss the following potentially dilutive securities, as they had an anti-dilutive impact:
Total number of potentially dilutive instruments, excluded from the calculation of net loss per share		8,832,776	234,557
Conversion feature of Senior Secured Notes [Member]
Net loss per share data presented excludes from the calculation of diluted net loss the following potentially dilutive securities, as they had an anti-dilutive impact:
Total number of potentially dilutive instruments, excluded from the calculation of net loss per share		15,551,497	72,500

[1] Adjusted to reflect the impact of the 1:3 reverse stock split that became effective on June 11, 2020.