Equity Incentive Plans (Summary of Stock Option Activity) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Equity Incentive Plans
Shares, Balance Beginning	3,352,803
Shares, Granted	17,500
Shares, Forfeited/Cancelled	(4,874)
Shares, Balance Ending	3,365,429	3,352,803
Vested and expected to vest at March 31, 2022	3,365,429
Exercisable at March 31, 2022	1,530,910
Weighted Average Exercise Price, Outstanding Beginning	$ 5.32
Weighted Average Exercise Price, Granted	2.36
Weighted Average Exercise Price, Forfeited/Cancelled	25.99
Weighted Average Exercise Price, Outstanding Ending	5.27	$ 5.32
Weighted Average Exercise Price, Vested and expected to vest at March 31, 2022	5.27
Weighted Average Exercise Price, Exercisable at March 31, 2022	$ 6.04
Weighted Average Remaining Contractual Term (Years), Outstanding	7 years 7 months 6 days	7 years 9 months 18 days
Weighted Average Remaining Contractual Term (Years), Vested and expected to vest at March 31, 2022	7 years 7 months 6 days
Weighted Average Remaining Contractual Term (Years), Exercisable at March 31, 2022	6 years 6 months
Aggregate Intrinsic Value, Outstanding Ending	$ 1,375
Aggregate Intrinsic Value, Vested and expected to vest at March 31, 2022	$ 1,375