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Stock-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions		1 Months Ended	3 Months Ended		12 Months Ended
	Jun. 13, 2023	Jan. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Oct. 31, 2020
Stock-based compensation
Common stock, shares issued			1,318,259		1,058,892
Remaining unrecognized compensation cost of non-vested stock options			$ 0.7
Weighted-average remaining requisite service period of recognition of unrecognized compensation cost			1 year 1 month 6 days
Minimum
Stock-based compensation
Stock awards vesting period			1 year
Maximum
Stock-based compensation
Stock awards vesting period			4 years
Employee Stock Option [Member]
Stock-based compensation
Stock awards vesting period			6 months	3 years
Options granted (in shares)			12,500	733
Options granted, grant date fair value			$ 1.77
Options exercised (in shares)			0	0
Employee Stock Option [Member] \| Minimum
Stock-based compensation
Options granted, grant date fair value				$ 7.56
Employee Stock Option [Member] \| Maximum
Stock-based compensation
Options granted, grant date fair value				$ 10.98
Restricted Stock Units (RSUs)
Stock-based compensation
Stock awards vesting period		3 years
Restricted Stock Units, Granted		17,133	12,500
Restricted stock units, grant date fair value		$ 13.50	$ 12.50		$ 16.26
Vesting period			6 months
Restricted stock units			2,080		300
Granted			$ 2.28
2018 Equity Incentive Plan (the "2018 Plan") [Member]
Stock-based compensation
Number of additional shares authorized	60,000
Number of shares reserved for issuance			9,213
Life of stock option awards granted			10 years
2018 Equity Incentive Plan (the "2018 Plan") [Member] \| Minimum
Stock-based compensation
Stock awards vesting period			1 year
2018 Equity Incentive Plan (the "2018 Plan") [Member] \| Maximum
Stock-based compensation
Stock awards vesting period			4 years
Inducement Equity Incentive Plan 2020 [Member]
Stock-based compensation
Number of authorized shares						13,333
Number of shares reserved for issuance			5,333
Common stock, shares issued			8,000