Represents the number of consecutive quarterly installments.

No definition available.

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities.

+ References

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

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- Definition

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.

+ References

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- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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- Definition

Number of new stock issued during the period.

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Note 7 - Debt (Details Textual)				6 Months Ended
Note 7 - Debt (Details Textual)	Apr. 23, 2019 USD ($)	Mar. 29, 2019 USD ($) shares	Jan. 28, 2019 USD ($)	Jun. 30, 2019 USD ($)
M/T Eco Marina Del Ray [Member] \| Cargill International SA [Member]
Long-term Line of Credit, Total				$ 31,860,000
MT Nord Valiant and MT Eco California [Member] \| BoComm Leasing [Member]
Long-term Line of Credit, Total				45,223,000
M/T Eco Bel Air and M/T Eco Beverly Hills [Member] \| CMBFL Leasing [Member]
Long-term Line of Credit, Total				91,412,000
ABN Bank [Member]
Repayments of Lines of Credit				$ 18,550
ABN Bank [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate				2.50%
ABN Bank [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate				2.60%
Nord/ LB Bank [Member]
Long-term Line of Credit, Total				$ 273,917,000
Alpha Bank [Member] \| M/T Stenaweco Elegance [Member]
Long-term Line of Credit, Total				1,500,000
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,500,000
Number of Consecutive Quarterly Installments	8
Debt Instrument, Periodic Payment, Total	$ 187,500
Alpha Bank [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| M/T Stenaweco Elegance [Member]
Debt Instrument, Basis Spread on Variable Rate	4.25%
AT Bank Bridge Facility [Member]
Long-term Line of Credit, Total				$ 10,500,000
Line of Credit Facility, Maximum Borrowing Capacity			$ 10,500,000
Line of Credit Facility, Commitment Fee Percentage			2.25%
AT Bank Bridge Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate			6.00%
Family Trading [Member] \| Immediate Family Member of Management or Principal Owner [Member] \| Revolving Credit Facility [Member]
Long-term Line of Credit, Total		$ 24,744,000
Accrued Liabilities, Total		$ 2,385,000
Stock Issued During Period, Shares, New Issues \| shares		27,129