Derivatives - Narrative (Details) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
	May 28, 2020 USD ($)	Jun. 30, 2020 USD ($) shares	Mar. 31, 2020 USD ($)	Jun. 30, 2020 USD ($) shares	Apr. 06, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($)	Oct. 31, 2019 USD ($)
Derivative [Line Items]
Derivative liability including prepayment penalties and future interest payments		$ 5,600	$ 5,300	$ 5,600
Loss in change in the fair value of derivative liability		300		300
Remeasured derivative liability		5,571		5,571		$ 6,776
Reverse stock split, conversion ratio	0.10
Derivative liability	$ 6,300	$ 5,600		$ 5,600
Pre-reverse stock split shares (in shares) | shares					538,995
Exercise price (dollars per share) | $ / shares					$ 0.01
Estimated fair value of the Warrants	$ 2,200				$ 1,400
Warrants outstanding (in shares) | shares		538,995		538,995
2023 Series A Unsecured Convertible Notes for Series B Senior Unsecured Convertible Notes
Derivative [Line Items]
Derivative liability							$ 13,500
Remeasured derivative liability			2,800
Gain on change in fair value of derivative			$ 4,000
2023 Series A Unsecured Convertible Notes for Series B Senior Unsecured Convertible Notes | Series B Senior Unsecured Convertible Notes | Convertible Notes Payable
Derivative [Line Items]
Fair value of embedded derivative liability		$ 2,000		$ 2,000			$ 2,000