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Share Based Compensation - Additional Information (Detail) (USD $)
 6 Months Ended 3 Months Ended 6 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Jun. 30, 2012
Jun. 30, 2011
Dec. 31, 2012
Common stock options
Dec. 31, 2011
Common stock options
Dec. 31, 2012
Common stock options
Dec. 31, 2011
Common stock options
Dec. 31, 2012
Non Vested
Dec. 31, 2012
Employees Stock Option Plan
Dec. 31, 2012
Directors Stock Option Plan
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]                      
Restricted shares of common stock 1,333,333                 1,066,667 266,666
Forfeiture period of stock option for director in case of cessation of employment 30 days                    
Forfeiture period of stock option for employee in case of cessation of employment 90 days                    
Options to purchase under the employees stock option plan and the directors stock option plan                   219,966 81,667
Share-based compensation expense         $ 36,000 $ 21,000 $ 65,000 $ 33,000      
Unrecognized compensation cost 259,000               43,000    
Number Outstanding, Options Outstanding 580,004   591,672 320,842         329,000    
Average Exercise Price, Options Outstanding $ 2.37 $ 2.65 $ 2.48 $ 2.71         $ 1.36    
Unrecognized expense is anticipated to be recognized on a straight line basis over a weighted average period 2 years 2 months 12 days                    
Unrecognized expense is anticipated to be amortized 2 years 8 months 12 days                    
Restricted Share Activity   $ 0                  
Restricted Share Outstanding   0