Stockholders' Equity - Preferred Stock (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended
		Jan. 16, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2020	Jun. 11, 2020	Jan. 15, 2020	Dec. 31, 2019	Mar. 29, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Conversion of notes to preferred stock (in shares)	[1]		22,000
Preferred stock, authorized (in shares)					5,000,000		5,000,000	2,000,000	2,000,000
Common stock, par value (in usd per share)					$ 0.0001	$ 0.0001		$ 0.0001
Conversion of notes to preferred stock				$ 1,769
Votes equal to the number of shares of common stock convertible					11.07%
Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Conversion of notes to preferred stock (in shares)			111,548	2,709,000
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Conversion of notes to preferred stock (in shares)			22,310
Series A Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued from conversion (in shares)		2,709,018
Series A Convertible Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Preferred stock, authorized (in shares)					3,300,000		3,300,000	0
Convertible Debt
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount converted		$ 1,800
Conversion rate (in dollars per share)		$ 0.67
Common stock, par value (in usd per share)		$ 0.0001

[1] * Shares outstanding for prior periods have been restated for the 1-for-5 reverse stock split effective June 11, 2020.