Equity Incentive Plans (Assumptions Used in the Black-Scholes Model) (Details)	Jun. 30, 2021	Jun. 30, 2020
Measurement Input, Price Volatility [Member]
Fair value input, equity securities	93.37	90.43
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	0.90	0.46
Minimum [Member] | Measurement Input, Expected Term [Member]
Fair value input, equity securities	5.50	5.75
Maximum [Member] | Measurement Input, Risk Free Interest Rate [Member]
Fair value input, equity securities	1.29	1.51
Maximum [Member] | Measurement Input, Expected Term [Member]
Fair value input, equity securities	7.00	6.25