Stockholders' Equity - Options Outstanding and Exercisable (Details)	12 Months Ended
	Dec. 31, 2021 $ / shares shares
OPTIONS OUTSTANDING
Number of Shares Outstanding (in shares) | shares	267,109
Weighted Average Remaining Contractual Life (in years)	8 years 2 months 12 days
Weighted Average Exercise Price (in dollars per share)	$ 3.46
OPTIONS EXERCISABLE
Number of Shares Exercisable (in shares) | shares	92,121
Weighted Average Remaining Contractual Life (in years)	7 years 7 months 6 days
Weighted Average Exercise Price (in dollars per share)	$ 3.28
Exercise price, range one
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, lower limit (in dollars per share)	1.45
Range of Exercise Prices, upper limit (in dollars per share)	$ 1.68
OPTIONS OUTSTANDING
Number of Shares Outstanding (in shares) | shares	69,377
Weighted Average Remaining Contractual Life (in years)	8 years 2 months 12 days
Weighted Average Exercise Price (in dollars per share)	$ 1.49
OPTIONS EXERCISABLE
Number of Shares Exercisable (in shares) | shares	27,078
Weighted Average Remaining Contractual Life (in years)	8 years 1 month 6 days
Weighted Average Exercise Price (in dollars per share)	$ 1.49
Exercise price, range two
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, lower limit (in dollars per share)	1.69
Range of Exercise Prices, upper limit (in dollars per share)	$ 2.20
OPTIONS OUTSTANDING
Number of Shares Outstanding (in shares) | shares	79,975
Weighted Average Remaining Contractual Life (in years)	7 years 6 months
Weighted Average Exercise Price (in dollars per share)	$ 2.10
OPTIONS EXERCISABLE
Number of Shares Exercisable (in shares) | shares	43,900
Weighted Average Remaining Contractual Life (in years)	7 years 6 months
Weighted Average Exercise Price (in dollars per share)	$ 2.10
Exercise price, range three
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, lower limit (in dollars per share)	2.21
Range of Exercise Prices, upper limit (in dollars per share)	$ 5.42
OPTIONS OUTSTANDING
Number of Shares Outstanding (in shares) | shares	38,406
Weighted Average Remaining Contractual Life (in years)	8 years 7 months 6 days
Weighted Average Exercise Price (in dollars per share)	$ 2.77
OPTIONS EXERCISABLE
Number of Shares Exercisable (in shares) | shares	11,046
Weighted Average Remaining Contractual Life (in years)	7 years 9 months 18 days
Weighted Average Exercise Price (in dollars per share)	$ 2.46
Exercise price, range four
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, lower limit (in dollars per share)	5.43
Range of Exercise Prices, upper limit (in dollars per share)	$ 5.81
OPTIONS OUTSTANDING
Number of Shares Outstanding (in shares) | shares	58,474
Weighted Average Remaining Contractual Life (in years)	9 years 1 month 6 days
Weighted Average Exercise Price (in dollars per share)	$ 5.55
OPTIONS EXERCISABLE
Number of Shares Exercisable (in shares) | shares	319
Weighted Average Remaining Contractual Life (in years)	7 years 4 months 24 days
Weighted Average Exercise Price (in dollars per share)	$ 5.52
Exercise price, range five
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, lower limit (in dollars per share)	5.82
Range of Exercise Prices, upper limit (in dollars per share)	$ 29.75
OPTIONS OUTSTANDING
Number of Shares Outstanding (in shares) | shares	20,877
Weighted Average Remaining Contractual Life (in years)	7 years 6 months
Weighted Average Exercise Price (in dollars per share)	$ 10.69
OPTIONS EXERCISABLE
Number of Shares Exercisable (in shares) | shares	9,778
Weighted Average Remaining Contractual Life (in years)	6 years 1 month 6 days
Weighted Average Exercise Price (in dollars per share)	$ 14.40