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DEBT - 133 Million Credit Facility (Details) - Secured Debt $ in Thousands					3 Months Ended	12 Months Ended
	Jun. 15, 2020 USD ($)	Jun. 11, 2020 USD ($)	Nov. 05, 2019 USD ($)	Aug. 14, 2018 USD ($) item	Sep. 30, 2018 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
$133 Million Credit Facility
Line of Credit Facility
Maximum borrowing capacity							$ 133,000
Term of facilities				5 years
Drawdowns during the period							24,000
Debt covenant to pay dividends or repurchase stock - Total cash and cash equivalents to total indebtedness (as a percent)			18.75%
Percentage limit of consolidated net income for which dividends can be paid			50.00%
Key covenant - Unrestricted cash and cash equivalents minimum				$ 30,000
Key covenant - Percentage of unrestricted cash to total indebtedness				7.50%
Minimum working capital required				$ 0
Maximum total indebtedness to total capitalization (as a ratio)				0.70
Repayment of secured debt						$ 114,940	9,160	$ 6,320
Long-term debt						$ 0	$ 113,509
$108 Million Credit Facility
Line of Credit Facility
Maximum borrowing capacity				$ 108,000
Number of vessels to serve as collateral under debt agreement | item				6
Drawdowns during the period					$ 108,000
Maximum facility amount of fair market value of aggregate vessels at delivery (as a percent)					45.00%
Repaid value of loan when certain debt terms are met				$ 0
Average age of collateral vessels for repayment of loan				20 years
Amount of periodic payment				$ 1,580
$108 Million Credit Facility | LIBOR
Line of Credit Facility
Reference rate				LIBOR
$108 Million Credit Facility | LIBOR | Through September 30, 2019
Line of Credit Facility
Applicable margin over reference rate				2.50%
$108 Million Credit Facility | Agreement To Purchase Ultramax And Capesize Vessels
Line of Credit Facility
Number of vessels committed to be acquired under purchase agreement | item				6
$108 Million Credit Facility | Agreement to Purchase Capesize Drybulk Vessels
Line of Credit Facility
Number of vessels committed to be acquired under purchase agreement | item				4
$108 Million Credit Facility | Agreement To Purchase Ultramax Drybulk Vessels
Line of Credit Facility
Number of vessels committed to be acquired under purchase agreement | item				2
Revolver
Line of Credit Facility
Maximum borrowing capacity		$ 25,000
Drawdowns during the period	$ 24,000
Minimum amounts of borrowings		1,000
Consecutive quarterly commitment reductions		$ 1,900
Threshold percentage of ratio of outstanding loan to aggregate appraised value of collateral vessels.		60.00%
Revolver | LIBOR
Line of Credit Facility
Reference rate		LIBOR
Applicable margin over reference rate		3.00%
Minimum | $133 Million Credit Facility
Line of Credit Facility
Debt covenant to pay dividends or repurchase stock - Total cash and cash equivalents			$ 100,000
Collateral security maintenance test (as a percent)				135.00%
Minimum | $108 Million Credit Facility | LIBOR | Period After September 30, 2019
Line of Credit Facility
Applicable margin over reference rate				2.25%
Maximum | $133 Million Credit Facility
Line of Credit Facility
Collateral security maintenance test (as a percent)			200.00%
Maximum | $108 Million Credit Facility | LIBOR | Period After September 30, 2019
Line of Credit Facility
Applicable margin over reference rate				2.75%

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Debt covenant pertaining to unrestricted cash and cash equivalents to total indebtedness.

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Debt covenant pertaining to the percentage of total cash and cash equivalents to total indebtedness, in which the entity may pay dividends or repurchase of stock.

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The amount of consecutive quarterly commitment reduction at the end of the reporting period.

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Represents the aggregate fair value of the mortgaged vessels to be maintained as a percentage of aggregate outstanding principal amount as per the terms of the credit facilities' covenants.

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Threshold borrowing limit under the line of credit facility at the end of the of the reporting period.

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Represents the maximum percentage of fair market value of aggregate vessels at delivery allowed under the credit facility.

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Represents the maximum ratio of total debt outstanding to total capitalization.

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Minimum working capital required per terms of the credit facility.

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Represents the number of vessels committed to be acquired by the entity under purchase agreement.

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Threshold percentage of ratio of outstanding loan to the aggregate appraised value of collateral vessels.

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The value of loan when the average age of the vessels serving as collateral from time to time reaches a specified period, following an initial non-amortization period and all additional debt covenants are met.

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Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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