Stockholders' Equity - Restricted Stock Units (Details)	3 Months Ended
	Mar. 31, 2021 $ / shares shares
Weighted Average Grant Date Fair Value
Outstanding at beginning of period (in dollars per share)	$ 8.64
Canceled/forfeited (in dollars per share)	$ 2.77
Weighted Average Remaining Contractual Life (in years)
Outstanding at end of period	8 years 10 months 24 days
Restricted Stock Units
Restricted Stock Units
Outstanding at beginning of period (in shares) | shares	4,480
Granted (in shares) | shares	50,000
Vested (in shares) | shares	(1,280)
Outstanding at end of period (in shares) | shares	53,200
Weighted Average Grant Date Fair Value
Granted (in dollars per share)	$ 5.26
Released (in dollars per share)	12.40
Outstanding at end of period (in dollars per share)	$ 5.37
Weighted Average Remaining Contractual Life (in years)
Outstanding at end of period	1 year 4 months 24 days