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Stock Options (Narrative) (Detail) - USD ($)
3 Months Ended 9 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2017
Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Cash received from option exercises     $ 49,000 $ 0
Allocated Share Based Compensation Expense $ 0 $ 0 $ 97,000 $ 92,000
Share based Compensation Cost Effect On Earnings Per Share Basic And Diluted $ 0.00 $ 0.00 $ 00 $ 0.00
Employee 2012 Stock Option Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized for issuance under the plan 950,000   950,000  
Percentage Applied To Market Price To Set Grant Price For Grantee Owning Ten Percent Or More Of Entity Common Stock Outstanding     110.00%  
Term of stock option awards     10 years  
Annual rate at which share-based compensation awards vest     20.00%  
Number of stock options, granted 5,000      
Number of stock options, exercisable 38,500   38,500  
Number of stock options available for grant 822,900   822,900  
Unearned stock-based compensation cost related to non-vested awards $ 123,000   $ 123,000  
Fair value of stock options that vested during the period     $ 75,000 $ 110,000
Tax benefit from stock option exercise $ 0 $ 0    
Number of shares outstanding, end of period 117,500   117,500  
Stock Options Exercised (in shares) 34,000 0 35,500 0
Conversion of Stock, Shares Issued 16,121      
Common Stock, Voting Rights     Any plan participant who is granted ISOs and possesses more than 10% of the voting rights of the Company's outstanding common stock  
NonEmployee 2012 Stock Option Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized for issuance under the plan 50,000   50,000  
Term of stock option awards     10 years  
Annual rate at which share-based compensation awards vest     20.00%  
Number of stock options, exercisable 5,200   5,200  
Number of stock options available for grant 15,000   15,000  
Unearned stock-based compensation cost related to non-vested awards $ 28,000   $ 28,000  
Fair value of stock options that vested during the period     22,000 $ 22,000
Tax benefit from stock option exercise $ 0 $ 0 $ 0 $ 0
Number of shares outstanding, end of period 35,000   35,000  
Stock Options Exercised (in shares) 15,600 0 20,800 0
Conversion of Stock, Shares Issued     9,998  
2002 Employee Stock Option Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of shares authorized for issuance under the plan 1,836,000   1,836,000  
Percentage Applied To Market Price To Set Grant Price For Grantee Owning Ten Percent Or More Of Entity Common Stock Outstanding     110.00%  
Term of stock option awards     10 years  
Annual rate at which share-based compensation awards vest     20.00%  
Number of stock options, exercisable 5,000   5,000  
Tax benefit from stock option exercise $ 0 $ 0 $ 0 $ 0
Cash received from option exercises $ 40,000 $ 0 $ 40,000 $ 0
Number of shares outstanding, end of period 1,471,480   1,471,480  
Stock Options Exercised (in shares) 35,000 0 87,000 67,500
Remaining Stock Options Exercised     6,500  
Conversion of Stock, Shares Issued     18,762  
Common Stock, Voting Rights     Any plan participant who was granted ISOs and possessed more than 10% of the voting rights of the Company's outstanding common stock  
Conversion of Stock, Shares Converted     80,500