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Significant Accounting Policies - Additional Information (Detail) - USD ($)
1 Months Ended 12 Months Ended
Oct. 31, 2018
Oct. 31, 2018
Oct. 31, 2017
Accounting Policies [Abstract]      
Provision for federal income taxes   $ 0  
Minimum days required to stay for tax liability   183 days  
Dividend payable, amount per share $ 0.0428 $ 0.0428  
Dividend payable, date to be paid Nov. 08, 2018    
Dividends Payable, date of record Nov. 02, 2018    
Distributions Paid $ 89,964 $ 470,368 $ 16,305