Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

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The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Related Party Transactions - Additional Information (Detail) - USD ($)		12 Months Ended
	Jun. 06, 2017	Dec. 31, 2017	Dec. 31, 2016	Mar. 23, 2017
Director
Related Party Transactions (Textual) [Abstract]
Outstanding payable balance for services rendered by law firm		$ 0	$ 40,000
Former Executive Chairman of Board of Directors \| Labor And Related Compensation
Related Party Transactions (Textual) [Abstract]
Compensation amount		90,000	0
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 date	Jun. 07, 2018
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		$ 40,000	$ 70,000