Subsequent Events - At-The-Market Offering Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 16, 2020	Dec. 31, 2019
Subsequent Event [Line Items]
Total shares of common stock sold (in shares)		3,528,532
Average Price Per Share (in dollars per share)		$ 7.37
Gross proceeds		$ 25,989
Commissions earned by Cantor		212
Net Proceeds		$ 25,777
Subsequent Event
Subsequent Event [Line Items]
Total shares of common stock sold (in shares)	6,688,000
Average Price Per Share (in dollars per share)	$ 1.73
Gross proceeds	$ 11,558
Commissions earned by Cantor	347
Net Proceeds	$ 11,211