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Related Party Transactions - Additional Information (Detail) (USD $)
 1 Months Ended 3 Months Ended
Feb. 28, 2011
Jan. 31, 2011
Jun. 30, 2010
Aug. 31, 2012
Mar. 02, 2010
Apr. 29, 2013
Grande
May 09, 2013
Deutsche Bank and S & T International Distribution Limited
Apr. 02, 2013
Deutsche Bank and S & T International Distribution Limited
Jun. 30, 2013
Amount owed from Emerson to Brighton Marketing Limited
Jun. 30, 2012
Amount owed from Emerson to Brighton Marketing Limited
Jun. 30, 2013
Grande Properties Management Limited
Jun. 30, 2012
Grande Properties Management Limited
Jun. 30, 2013
Lafe Strategic Services Limited
Jun. 30, 2013
Mr. Eduard Will, a director of Emerson
Jun. 30, 2012
Mr. Eduard Will, a director of Emerson
Jun. 30, 2013
Vigers Appraisal & Consulting Ltd
Jun. 30, 2012
Vigers Appraisal & Consulting Ltd
Related Party Transaction [Line Items]                                  
Grande's (Provisional Liquidator Appointed) Ownership Interest in Emerson number of shares           15,243,283                      
Grande's (Provisional Liquidator Appointed) Ownership Interest Percentage           56.20%                      
Number of securities pledged by major shareholder             0 3,380,079                  
Service charge from related party                 $ 1,000 $ 1,000 $ 4,000 $ 11,000          
Amount owed to related party                                        
Amount receivable from related party                                  1,000
Security deposit paid at inception of agreement                         6,000        
Notice period to cancel rental agreement                         1 month        
Consulting fees paid to related party                           29,000 29,000    
Expense reimbursements and advances paid to related party                             2,000    
Extraordinary dividend declared         $ 1.10                        
Company's assertion as to the percent of the dividend that is taxable to the recipient         4.90%                        
Internal Revenue Service's assertion as to the percent of the dividend that is taxable to the recipient, which the company is refuting       100.00%                          
Reimbursement of legal fees     42,000                            
Agreement transaction fees     33,000                            
Waive of legal charges   5,000                              
Receipts from related party for amount owned 70,000                                
Amount invoiced to related party                               $ 1,000 $ 1,000