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Summary of Assets and Liabilities Included in Accompanying Consolidated Balance Sheets (Detail) (USD $)
Mar. 31, 2013
Jun. 30, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Other assets $ 10,000  
Astromec
   
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Accounts receivable 43,000 45,000
Other assets 10,000   
Accounts payable 26,000 3,000
Accrued expenses $ 5,000 $ 25,000