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Related Party Transaction - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 01, 2019
Dec. 31, 2019
Dec. 31, 2018
Aug. 16, 2019
Jul. 26, 2019
Sep. 30, 2013
Schedule of Other Related Party Transactions [Line Items]            
Finance lease obligation   $ 4,088,000        
Total long term finance lease obligations to related parties     $ 3,367,000      
Due from related parties   0 22,000      
Real property and buildings            
Schedule of Other Related Party Transactions [Line Items]            
Sublease income   24,000 55,000      
Affiliated Entity            
Schedule of Other Related Party Transactions [Line Items]            
Purchases from related parties   80,000 35,000      
Due to related parties   8,000 0      
Affiliated Entity | TMG            
Schedule of Other Related Party Transactions [Line Items]            
Principal and interest payments $ 232,000          
Lease term 12 months          
Annual rate 8.90%          
Upfront fee payment $ 131,000          
Finance lease obligation 646,000          
Related party sales   52,000 133,000      
Due from related parties   0 4,000      
Due to related parties   22,000 29,000      
Purchase of supplies and services   175,000 47,000      
Affiliated Entity | TMG | Equipment            
Schedule of Other Related Party Transactions [Line Items]            
Finance lease obligation $ 3,200,000          
Affiliated Entity | Chart E&C | Secured Debt            
Schedule of Other Related Party Transactions [Line Items]            
Debt instrument, face amount   $ 2,100,000        
Affiliated Entity | Applied Cryo Technologies            
Schedule of Other Related Party Transactions [Line Items]            
Ownership percentage   51.00%        
Purchase of equipment and services   $ 302,000        
Payment for equipment repairs and services   145,000 63,000      
Related party sales   4,000        
Due from related parties   4,000 0      
Due to related parties   24,000 5,000      
TMG            
Schedule of Other Related Party Transactions [Line Items]            
Payroll related expenses   4,000 13,000      
TMG | Operating Leases Related Party | Land            
Schedule of Other Related Party Transactions [Line Items]            
Sublease income   $ 10,000 12,000      
Secured Promissory Note | M/G Finance Co., Ltd.            
Schedule of Other Related Party Transactions [Line Items]            
Debt instrument, face amount       $ 5,000,000    
Secured Promissory Note | M/G Finance Co., Ltd. | Secured Debt            
Schedule of Other Related Party Transactions [Line Items]            
Debt instrument, face amount       $ 5,000,000    
Secured Promissory Note | M/G Finance Co., Ltd. | Secured Debt | To December 10, 2020            
Schedule of Other Related Party Transactions [Line Items]            
Interest rate       6.00%    
Secured Promissory Note | M/G Finance Co., Ltd. | Secured Debt | December 11, 2020 and Thereafter            
Schedule of Other Related Party Transactions [Line Items]            
Interest rate       12.00%    
Senior Secured Term Note            
Schedule of Other Related Party Transactions [Line Items]            
Debt instrument, face amount           $ 20,500,000
Senior Secured Term Note | London Interbank Offered Rate (LIBOR)            
Schedule of Other Related Party Transactions [Line Items]            
Debt instrument, interest rate basis   4.70%       3.00%
Executive Chairman and Chairman of our Board | Affiliated Entity | TMG            
Schedule of Other Related Party Transactions [Line Items]            
Beneficial ownership percentage 25.00%          
Former Executive Chairman of Board of Directors of American Electric Technologies Inc | Loan Agreement | M&I Brazil | Senior Secured Term Note            
Schedule of Other Related Party Transactions [Line Items]            
Line of credit facility, maximum borrowing capacity         $ 300,000  
Loan facility drawn and outstanding   $ 200,000        
Interest rate         10.00%  
Subsidiaries | Stabilis LLC            
Schedule of Other Related Party Transactions [Line Items]            
Total long term finance lease obligations to related parties     $ 1,500,000      
Capital lease obligation, lease term     24 months      
Capital lease obligation, interest rate     10.00%