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Shareholders' Equity - Stock Option Transactions Under the Various Employee Stock Option Plans (Detail) (USD $)
 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]      
Beginning Balance, Shares 29,000 25,300 55,300
Granted, Shares   5,000  
Exercised, Shares         
Forfeited, Shares   1,300 30,000
Ending Balance, Shares 29,000 29,000 25,300
Beginning Balance, Weighted Average Exercise Price $ 17.03 $ 19.40 $ 19.21
Granted, Weighted Average Exercise Price   $ 6.54  
Exercised, Weighted Average Exercise Price       
Forfeited, Weighted Average Exercise Price   $ 22.63 $ 19.06
Ending Balance, Weighted Average Exercise Price $ 17.03 $ 17.03 $ 19.40
Weighted Average Remaining Contractual Life in Yrs, Outstanding 5 years 15 days    
Aggregate Intrinsic Value (net of tax), Outstanding $ 200,336