Stock-based Compensation - 2020 Inducement Plan (Details)	3 Months Ended
	Mar. 31, 2020 shares
Stock-based compensation
Shares granted, options (in shares)	1,087,783
2020 Inducement Plan
Stock-based compensation
Initial shares of common stock authorized for issuance of stock awards (in shares)	1,000,000
Shares granted, options (in shares)	0
Shares granted, other than options (in shares)	0