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Equity Plans (Narrative) (Details) - USD ($)	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Non-cash share-based compensation expense	$ 2,600,000	$ 2,400,000
Vesting period		4 years
Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares authorized under 2015 Equity Incentive Plan	3,000,000
Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares authorized under 2015 Equity Incentive Plan	1,500,000
2017 Employee Stock Purchase Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Discount rate on purchase of common stock		5.00%
Common Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares authorized under 2015 Equity Incentive Plan	3,261
Stock vested	3,834	25,310
Fair value of stock vested	$ 120,000	$ 69,000
Stock issued under employee stock purchase plan	8,389	2,492
Non-vested restricted stock awards [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Weighted-average period	16 years
Restricted stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Non-cash share-based compensation expense	$ 18,100,000
Grant date fair value of restricted stock	$ 4,800,000
Stock vested	14,485	75,093
Fair value of stock vested	$ 87,000	$ 853,000
Restricted stock [Member] | Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period	10 years
Restricted stock [Member] | Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period	19 years
Stock awards [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares authorized under 2015 Equity Incentive Plan	8,287
Awards granted under 2015 Equity Incentive Plan	8,287
Grant date fair value of restricted stock	$ 300,000	$ 264,000
Fair value of stock vested	$ 118,000
Restricted Stock Awards [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Awards granted under 2015 Equity Incentive Plan	134,612	8,624
Restricted Stock Units [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Non-cash share-based compensation expense	$ 9,600,000
Awards granted under 2015 Equity Incentive Plan	178,719	204,014
Grant date fair value of restricted stock	$ 3,800,000	$ 6,300,000
Weighted-average period	11 years 4 months 24 days
Stock vested	6,350	2,531
Restricted Stock Units [Member] | Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period	4 years	4 years
Restricted Stock Units [Member] | Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Vesting period	37 years	41 years

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