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Stock-Based Compensation (Narrative) (Details) - USD ($)
3 Months Ended 9 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Mar. 31, 2018
Mar. 31, 2019
Mar. 31, 2018
Chief Executive Officer [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Compensation cost $ 100,000     $ 100,000  
Options issued under stock option plans   55,000      
Stock Option Plans [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Period options are excercisable       10 years  
Shares available for future grants 0     0  
Long-Term Management Incentive Compensation Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares approved to be issued under plan 700,000     700,000  
Shares issued       102,183  
Compensation cost $ (200,000)   $ 200,000 $ (200,000) $ 200,000
Long-Term Management Incentive Compensation Plan [Member] | 2017-2019 [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Compensation cost       800,000  
Long-Term Management Incentive Compensation Plan [Member] | 2018-2020 [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Compensation cost       500,000  
Long-Term Management Incentive Compensation Plan [Member] | 2019-2021Member          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Compensation cost       $ 300,000  
Omnibus Stock Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares approved to be issued under plan 700,000     700,000  
Compensation cost $ 100,000     $ 500,000 $ 200,000
Period options are excercisable       10 years  
Options issued under stock option plans 34,087     100,392 21,439
Shares available for future grants 384,794     384,794  
Omnibus Stock Plan [Member] | Director [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares issued 3,976   2,176 10,241 5,740
Compensation cost $ 100,000   $ 100,000 $ 300,000 $ 300,000
Omnibus Stock Plan [Member] | Chief Executive Officer [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Compensation cost $ 40,000     $ 40,000  
Restricted Stock Unit       30,000  
Omnibus Stock Plan [Member] | Chief Executive Officer [Member] | Restricted Stock [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares issued       3,186  
Omnibus Stock Plan [Member] | Non-Executive Officer          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Restricted Stock Unit 4,169        
Omnibus Stock Plan [Member] | Executive Officer [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares issued         6,280
Compensation cost $ (100,000)     $ 200,000  
Restricted Stock Unit Expense     $ 100,000   $ 200,000
Restricted Stock Unit       18,789