Equity Incentive Plans (Summary of Stock Option Activity) (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2023 USD ($) $ / shares shares	Dec. 31, 2022 $ / shares shares
Equity Incentive Plans
Shares, Balance Beginning | shares	3,352,803
Shares, Granted | shares	17,500
Shares, Exercised | shares	(1,500)
Shares, Forfeited/Cancelled | shares	(455,503)
Shares, Balance Ending | shares	2,913,300	3,352,803
Vested and expected to vest at September 30, 2023 | shares	2,913,300
Exercisable at September 30, 2023 | shares	2,136,125
Weighted Average Exercise Price, Outstanding Beginning | $ / shares	$ 5.32
Weighted Average Exercise Price, Granted | $ / shares	2.36
Weighted Average Exercise Price, Exercised | $ / shares	3.15
Weighted Average Exercise Price, Forfeited/Cancelled | $ / shares	5.16
Weighted Average Exercise Price, Outstanding Ending | $ / shares	5.33	$ 5.32
Weighted Average Exercise Price, Vested and expected to vest at September 30, 2023 | $ / shares	5.33
Weighted Average Exercise Price, Exercisable at September 30, 2023 | $ / shares	$ 5.53
Weighted Average Remaining Contractual Term (Years), Outstanding	5 years 9 months 18 days	7 years 9 months 18 days
Weighted Average Remaining Contractual Term (Years), Vested and expected to vest at September 30, 2023	5 years 9 months 18 days
Weighted Average Remaining Contractual Term (Years), Exercisable at September 30, 2023	5 years 2 months 12 days
Aggregate Intrinsic Value, Exercised | $	$ 1,000
Aggregate Intrinsic Value, Forfeited/Cancelled | $	1,000
Aggregate Intrinsic Value, Outstanding Ending | $	45,000
Aggregate Intrinsic Value, Vested and expected to vest at September 30, 2023 | $	$ 45,000