Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Issuance costs		$ 5,587
At market equity offering program (2018 ATM)
Issuance costs	$ 2,176
Public Stock Offering
Issuance costs	$ 10,809