Stockholders’ Equity (Deficit) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) Vote / shares shares	Dec. 31, 2018 USD ($) shares
Common Stock
Common stock, shares authorized	100,000,000	45,800,000
Common stock, shares issued	15,592,718	5,166,812
Common stock, shares outstanding	15,592,718	5,166,812
Issuance costs | $	$ 74	$ 54
Common Stock
Common Stock
Common stock, vote per share | Vote / shares	1
Issuance of redeemable convertible preferred stock (in shares)	594,850