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           STOCKHOLDERS' EQUITY - Employee Option Grants and Non-employee Option Grants (Detail) (USD $) 
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        3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
| 
           Mar. 31, 2015 
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           Mar. 31, 2014 
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           Mar. 31, 2015 
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           Mar. 31, 2014 
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| Total stock-based compensation expense | $ 61,000us-gaap_AllocatedShareBasedCompensationExpense | $ 133,000us-gaap_AllocatedShareBasedCompensationExpense | $ 174,000us-gaap_AllocatedShareBasedCompensationExpense | $ 193,000us-gaap_AllocatedShareBasedCompensationExpense | 
| Research and development [Member] | ||||
| Total stock-based compensation expense | 
3,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember  | 
        
4,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember  | 
        
9,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember  | 
        
7,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember  | 
      
| General and administration [Member] | ||||
| Total stock-based compensation expense | 
$ 58,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_GeneralAndAdministrativeExpenseMember  | 
        
$ 129,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_GeneralAndAdministrativeExpenseMember  | 
        
$ 165,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_GeneralAndAdministrativeExpenseMember  | 
        
$ 186,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_IncomeStatementLocationAxis = us-gaap_GeneralAndAdministrativeExpenseMember  | 
      
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- Definition 
          Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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