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Notes Payable - Additional Information (Detail) - HD Special-Situations III, L.P. - USD ($)
 3 Months Ended 12 Months Ended
Mar. 29, 2018
Nov. 13, 2017
Jun. 30, 2017
Mar. 23, 2017
Mar. 31, 2018
Mar. 31, 2017
Mar. 28, 2018
Senior Secured Term Note              
Debt Instrument [Line Items]              
Debt principal amount       $ 7,000,000      
Debt principal repayment     $ 500,000        
Debt instrument, initial repayment date       Jun. 30, 2017      
Debt instrument, payment terms         $7.00 million principal amount Senior Secured Term Note (the “Note”) with principal of $0.50 million due and paid on June 30, 2017, with the remaining balance due 48 months after issuance for cash at par pursuant to a Note Purchase Agreement (the “Purchase Agreement”).    
Interest rate       11.50%      
Debt instrument, description incase of prepayment principal         The Note is subject to an interest “make-whole” provision such that any prepayment of the principal thereunder in excess of $1.50 million (the “Prepayment Threshold”) within one year of the date of issuance (the “Make-Whole Period”) shall be subject to prepayment premium. No prepayments were made during the Make-Whole Period which expired on March 28, 2018.    
Debt instrument prepayment of principal             $ 0
Make whole expiration date         Mar. 28, 2018    
Debt instrument, prepayment of principal after Make Whole Period         After the one year Make- Whole Period the Note may be prepaid in part or in full with no penalty.    
Minimum principal reductions per month   $ 30,000          
Minimum principal reductions, begining period   2018-04          
Warrants issued to purchase of common stock   500,000          
Warrant exercise price per share   $ 2.26          
Warrants expiration period   2023-11          
Fair value of warrants recognized as an increase in additional paid-in-capital         $ 370,000    
Accretion of warrant discount         $ 30,000 $ 0  
Senior Secured Term Note | Minimum              
Debt Instrument [Line Items]              
Prepayment Threshold       $ 1,500,000      
Senior Secured Term Note | Purchase Agreement              
Debt Instrument [Line Items]              
Debt, remaining principal payable period         48 months    
Additional interest rate in case of default         4.00%    
Senior Secured Term Note | Loan Agreement | M&I Brazil | Former Chairman of AETI              
Debt Instrument [Line Items]              
Interest rate 10.00%            
Line of credit facility, agreement date Mar. 29, 2018            
Line of credit facility, maximum borrowing capacity $ 300,000            
Loan facility drawn and outstanding         $ 200,000    
Debt instrument, interest rate terms         the interest rate on the loan facility is 10.0%, per annum, payable each quarter.    
Debt instrument, maturity date Jun. 07, 2019            
Revolving Credit Facility              
Debt Instrument [Line Items]              
Proceeds from sale of note available for working capital and general business purposes       $ 1,000,000