Stockholders' Equity (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) Vote $ / shares shares	Dec. 31, 2019 $ / shares shares
Stockholders' Equity
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares outstanding	0	0
Common stock, shares authorized	100,000,000	100,000,000
Common stock, par value (in dollars per share) | $ / shares	$ 0.00001	$ 0.00001
Dividend declared | $	$ 0
Initial exercise price | $ / shares	$ 0.956
Number of votes per share | Vote	1
Fair value of warrants | $	$ 378