Notes Payable	3 Months Ended
Mar. 31, 2019
Debt Disclosure [Abstract]
Notes Payable	5. Notes Payable On June 6, 2017, the Company’s subsidiary, M&I Brazil, entered into a Loan Agreement with the former chairman of AETI. The Loan Agreement provides the Company with a $0.30 million loan facility of which $0.20 million is drawn and is outstanding as of March 31, 2019. All outstanding amounts, including accrued but unpaid interested, are due at maturity in June 2019. Under the loan agreement, the interest rate on the loan facility is 10.0%, per annum, payable each quarter. The loan facility is secured by the assets held by M&I Brazil. During the three months ended March 31, 2019, Brazil financed project expenditures with short-term financing of approximately $0.2 million in from Santander bank. The loan is due March 2020, with an interest rate of 11.88%.

The entire disclosure for debt and capital lease obligations can be reported. Information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. Also includes descriptions and amounts of capital leasing arrangements that consist of direct financing, sales type and leveraged leases. Disclosure may include the effect on the balance sheet and the income statement resulting from a change in lease classification for leases that at inception would have been classified differently had guidance been in effect at the inception of the original lease.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-URI http://asc.fasb.org/topic&trid=2208923

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-URI http://asc.fasb.org/topic&trid=2208564

Name:	us-gaap_DebtAndCapitalLeasesDisclosuresTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration