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Equity Plans (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Equity Plans (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized under 2015 Equity Incentive Plan	1,500,000		1,500,000
Non-cash share-based compensation expense	$ 809	$ 449	$ 1,724	$ 1,287
Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted under 2015 Equity Incentive Plan	180,669		187,169	6,845
Unrecognized compensation expense, net of estimated forfeitures, related to non-vested restricted stock	$ 17,000		$ 17,000
Weighted-average period			17 years 1 month 6 days
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted under 2015 Equity Incentive Plan	16,000	12,500	28,110	27,500
Unrecognized compensation expense, net of estimated forfeitures, related to non-vested restricted stock	$ 1,500		$ 1,500
Weighted-average period			16 years 8 months 12 days
Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted under 2015 Equity Incentive Plan	13,550		13,550
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued under employee stock purchase plan			1,022	726
Proceeds from issuance			$ 26	$ 23