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GENERAL INFORMATION (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 USD ($) item | Dec. 31, 2021 USD ($) item | Dec. 31, 2020 item
Vessels |  |  |
Number of vessels in fleet | item | 44 | 42 | 47
GSSM | Variable Interest Entity |  |  |
Vessels |  |  |
Ownership percentage | 50.00% | 50.00% |
Investments used directly for operations | $ 50 | $ 50 |
GSSM | Synergy |  |  |
Vessels |  |  |
Ownership by synergy | 50.00% | 50.00% |
Investments used directly for operations | $ 50 | $ 50 |

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- Definition Represents the number of vessels in the fleet. + References No definition available. + Details
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Balance Type: | na
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- Definition Variable interest entity ownership percentage held by third party. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Period Type: | duration

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- Definition Amount of investment in equity method investee and investment in and advance to affiliate. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123419778&loc=SL6759159-111685 + Details
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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
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