Equity Incentive Plans (Assumptions Used in the Black-Scholes Model) (Details) - Common Stock Options [Member] - USD ($)	Jun. 30, 2023	Jun. 30, 2022
Measurement Input, Expected Dividend Rate [Member]
Fair value input, equity securities	0	0
Minimum [Member] | Measurement Input, Risk Free Interest Rate [Member]
Fair value input, equity securities	3.54	2.65
Minimum [Member] | Measurement Input, Price Volatility [Member]
Fair value input, equity securities	90.99	84.81
Minimum [Member] | Measurement Input, Expected Term [Member]
Fair value input, equity securities	5.50	5.50
Maximum [Member] | Measurement Input, Risk Free Interest Rate [Member]
Fair value input, equity securities	4.20	3.52
Maximum [Member] | Measurement Input, Price Volatility [Member]
Fair value input, equity securities	91.58	85.67
Maximum [Member] | Measurement Input, Expected Term [Member]
Fair value input, equity securities	7.00	7.00