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Stock-Based Compensation (Narrative) (Details)
12 Months Ended
Jun. 30, 2017
USD ($)
item
shares
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Cash received from exercise of stock options $ 141,000    
Tax benefit related to tax deductions for non-qualified options and disqualifying dispositions under all share-based payment arrangements $ 20,000    
Number of restricted share award types | item 3    
Shares available for future grants | shares 607,952    
Board Of Directors [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares issued to directors | shares 35,290    
Shares issued to directors, value $ 363,000    
Employee Stock Option [Member] | 2004 Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expiration period 10 years    
Stock based compensation expense $ 374,000 $ 428,000 $ 298,000
Unrecognized compensation cost $ 556,000    
Expected weighted average vesting period to recognize compensation 2 years    
Employee Stock Option [Member] | Minimum [Member] | Tranche 1 Through 4 [Member] | 2004 Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting rate 25.00%    
Employee Stock Option [Member] | Maximum [Member] | Tranche 1 Through 3 [Member] | 2004 Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting rate 33.33%    
Restricted Stock [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock based compensation expense $ 145,000 $ 221,000 $ 209,000
Total unrecognized compensation related to restricted stock awards $ 31,000    
Expected weighted average vesting period to recognize compensation 3 months 18 days    
Performance Shares [Member] | 2004 Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 1 year    
Performance Shares [Member] | Tranche 1 Through 3 [Member] | 2004 Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting rate 33.33%    
Revenue And Operating Income Results Shares [Member] | Tranche 1 Through 3 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting rate 33.33%    
Restricted Non-Management Board Of Director Members Shares [Member] | Tranche 1 Through 3 [Member] | 2004 Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting rate 33.33%