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Stock Options (Narrative) (Detail) (USD $)
9 Months Ended 3 Months Ended 9 Months Ended
Mar. 31, 2013
Mar. 31, 2013
Exercise price of stock options received in entity shares [Member]
Mar. 31, 2012
Exercise price of stock options received in entity shares [Member]
Mar. 31, 2013
NonEmployee 2012 Stock Option Plan [Member]
Mar. 31, 2013
2002 Employee Stock Option Plan [Member]
Mar. 31, 2013
Stock Option Plan 2000 [Member]
Mar. 31, 2012
Stock Option Plan 2000 [Member]
Mar. 31, 2013
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       50,000 1,836,000 270,000   950,000
Percentage applied to market price to set a grant price for a shareholder owning 10% or more of the company's outstanding common stock         110.00%     110.00%
Term of stock option awards       10 years 10 years 5 years   10 years
Annual rate at which share-based compensation awards vest       20.00% 20.00% 20.00%   20.00%
Number of stock options available for grant       50,000 0     950,000
Number of stock options granted from plan inception         1,471,480      
Description of noncash transaction   729,000 options were exercised during the nine months ended March 31, 2013 and no options were exercised during the nine months ended March 31, 2012. These exercises were paid for with 399,790 shares of the Company’s common stock, 27,900 of which were retired upon receipt. Cash  received from option exercises for each of the nine months ended March 31, 2013 and 2012 was $0 and the actual tax benefit realized for the tax deductions from option exercises totaled $114,000 and $0 for these periods, respectively.            
Number of shares exercised   729,000 0          
Noncash collection of stock option exercise price, number of shares received and retired   27,900            
Noncash collection of stock option exercise price, number of shares received   399,790            
Tax benefit from stock option exercise $ 114,000 $ 114,000 $ 0          
Unearned stock-based compensation cost related to non-vested awards         0 0    
Fair value of stock options that vested during the period         $ 0   $ 0  
Option price stated as a percentage of the fair market value of the stock price on the date of grant           100.00%