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Related Party Transactions - Additional Information (Detail) - USD ($)
1 Months Ended 12 Months Ended
Jun. 06, 2017
Aug. 31, 2018
Dec. 31, 2018
Dec. 31, 2017
Mar. 23, 2017
Director          
Related Party Transactions (Textual) [Abstract]          
Outstanding payable balance for services rendered by law firm     $ 50,000 $ 40,000  
Issuance of shares as compensation   150,000      
Stock compensation expense     70,000    
Former Executive Chairman of Board of Directors | Labor And Related Compensation          
Related Party Transactions (Textual) [Abstract]          
Compensation amount     150,000 90,000  
HD Special-Situations III, L.P. | Senior Secured Term Note          
Related Party Transactions (Textual) [Abstract]          
Interest rate         11.50%
HD Special-Situations III, L.P. | Senior Secured Term Note | Loan Agreement | M&I Brazil | Former Chairman of AETI          
Related Party Transactions (Textual) [Abstract]          
Line of credit facility, agreement date Jun. 06, 2017        
Line of credit facility, maximum borrowing capacity $ 300,000        
Loan facility drawn and outstanding     $ 200,000    
Debt instrument, maturity year and month 2019-06        
Interest rate 10.00%        
Debt instrument, interest rate terms     the interest rate on the loan facility is 10.0%, per annum, payable each quarter.    
General and Administrative Expense | Director          
Related Party Transactions (Textual) [Abstract]          
Expenses related to legal advice     $ 20,000 $ 40,000