Series B Convertible Preferred Stock and Stockholders' Equity Series B Convertible Preferred Stock and Stockholders' Equty - Change in Preferred Stock Carrying Value (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Increase (Decrease) in Temporary Equity [Roll Forward]
Beginning balance	$ 0
Ending balance	93,012
Series B Convertible Preferred Stock
Increase (Decrease) in Temporary Equity [Roll Forward]
Beginning balance	0
Accrual of in-kind dividends	590
Gross proceeds from issuance of shares	100,000
Relative fair value of Warrants issued	(1,076)
Recognition of bifurcated embedded derivative	(2,295)
Allocation of issuance costs to Preferred Stock	(4,259)
Amortization of discount (deemed dividends)	52
Ending balance	$ 93,012