CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) $ / shares
Follow-on Public Offering, One
Share Price (in dollars per share) | $ / shares	$ 10
Stock issuance costs	$ 3,025
Follow-on Public Offering, Two
Share Price (in dollars per share) | $ / shares	$ 14
Stock issuance costs	$ 5,208
2017 Equity Distribution Agreement
Stock issuance costs	$ 161