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Stock-Based Compensation (Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Proceeds from stock plans $ 0 $ 55,000   $ 56,000
Shares granted     85,512  
Board Of Directors [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares issued to directors 12,061   29,527  
Shares issued to directors, value $ 125,000   $ 257,000  
Employee Stock Option [Member] | 2004 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock based compensation expense 142,000 $ 80,000 197,000 $ 220,000
Unrecognized compensation cost $ 531,000   $ 531,000  
Expected weighted average vesting period to recognize compensation     2 years 1 month 6 days  
Options issued 100,000 100,000 100,000 131,500
Employee Stock Option [Member] | Minimum [Member] | 2004 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Period before vesting begins     1 year  
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] | 2004 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration period     10 years  
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     33.30%  
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock based compensation expense $ 56,000 $ 31,000 $ 132,000 $ 103,000
Total unrecognized compensation related to restricted stock awards 308,000   $ 308,000  
Expected weighted average vesting period to recognize compensation     2 years 8 months 12 days  
Performance Shares [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock based compensation expense 67,000      
Total unrecognized compensation related to restricted stock awards $ 279,000   $ 279,000  
Expected weighted average vesting period to recognize compensation     1 year 7 months 6 days  
Shares granted 40,150      
Performance Shares [Member] | Tranche 1 [Member] | 2004 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting rate     33.33%  
Vesting period     1 year  
Performance Shares [Member] | Tranche 2 [Member] | 2004 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting rate     33.33%  
Performance Shares [Member] | Tranche 3 [Member] | 2004 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting rate     33.33%  
Performance Shares [Member] | Tranche 1 Through 3 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting rate     33.33%  
Restricted Stock Units (RSUs) [Member] | Tranche 1 [Member] | 2004 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting rate     33.33%  
Restricted Stock Units (RSUs) [Member] | Tranche 2 [Member] | 2004 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting rate     33.33%  
Restricted Stock Units (RSUs) [Member] | Tranche 3 [Member] | 2004 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting rate     33.33%  
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%  
Operating Income-Based Performance Shares [Member] | Tranche 1 Through 3 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting rate     50.00%  
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%  
Restricted Company Performance Shares [Member] | Tranche 1 [Member] | 2004 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting rate     33.33%  
Restricted Company Performance Shares [Member] | Tranche 2 [Member] | 2004 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting rate     33.33%  
Restricted Company Performance Shares [Member] | Tranche 3 [Member] | 2004 Plan [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 [Member] | 2004 Plan [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 2 [Member] | 2004 Plan [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 3 [Member] | 2004 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting rate     33.33%