Stock-Based Compensation (Narrative) (Details)	12 Months Ended
Jun. 30, 2020 USD ($) Target shares	Jun. 30, 2019 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from stock plans	$ 0	$ 318,000
Tax benefit related to tax deductions for non-qualified options and disqualifying dispositions under all share-based payment arrangements		160,000
Shares available for future grants \| shares	1,129,674
Board Of Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued to directors \| shares	42,368
Shares issued to directors, value	$ 172,000
Employee Stock Option [Member] \| 2004 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	160,000	390,000
Unrecognized compensation cost	$ 51,000
Expected weighted average vesting period to recognize compensation	1 year 6 months
Employee Stock Option [Member] \| Tranche 1 Through 3 [Member] \| 2004 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate	33.30%
Employee Stock Option [Member] \| Minimum [Member] \| 2004 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period	10 years
Employee Stock Option [Member] \| Maximum [Member] \| 2004 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Period before vesting begins	1 year
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 252,000	$ 244,000
Expected weighted average vesting period to recognize compensation	10 months 24 days
Total unrecognized compensation related to restricted stock awards	$ 66,000
Operating Income-Based Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of performance targets \| Target	2
Operating Income-Based Performance Shares [Member] \| Minimum [Member] \| Tranche 1 Through 3 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate	75.00%
Operating Income-Based Performance Shares [Member] \| Maximum [Member] \| Tranche 1 Through 3 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate	200.00%
Revenue-Based Performance Shares [Member] \| Minimum [Member] \| Tranche 1 Through 3 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate	50.00%
Revenue-Based Performance Shares [Member] \| Maximum [Member] \| Tranche 1 Through 3 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate	150.00%
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 0
Expected weighted average vesting period to recognize compensation	1 year 3 months 18 days
Total unrecognized compensation related to restricted stock awards	$ 126,000
Performance Shares [Member] \| Interim President and Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 181,000
Performance Shares [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rate	75.00%
Threshold performance level required for vesting award, percentage	75.00%

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