Loss Per Share (Details) - shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Loss Per Share
Antidilutive securities excluded from computation of diluted weighted average shares outstanding (in shares)	2,758,435	2,625,789
Common stock options
Loss Per Share
Antidilutive securities excluded from computation of diluted weighted average shares outstanding (in shares)	2,750,375	2,625,789
Restricted stock units
Loss Per Share
Antidilutive securities excluded from computation of diluted weighted average shares outstanding (in shares)	2,275	0
Employee stock purchase plan
Loss Per Share
Antidilutive securities excluded from computation of diluted weighted average shares outstanding (in shares)	5,785	0