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DEBT - 495 Million Credit Facility (Details) $ in Thousands							12 Months Ended
	Mar. 12, 2020 USD ($)	Sep. 23, 2019 USD ($)	Aug. 28, 2019 USD ($)	Feb. 28, 2019 USD ($) item	Jun. 05, 2018	May 31, 2018 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2022 USD ($)	Dec. 17, 2020 item
$495 Million Credit Facility
Line of Credit Facility
Drawdowns during the period								$ 11,250
Repayment of secured debt							$ 334,288	72,686
Secured Debt | $495 Million Credit Facility
Line of Credit Facility
Maximum borrowing capacity				$ 495,000
Repayment of secured debt							334,288	72,686
Long-term debt							$ 0		$ 0
Repayment of secured debt.								$ 72,686
Secured Debt | $460 Million Credit Facility
Line of Credit Facility
Maximum borrowing capacity						$ 460,000
Term of facilities						5 years
Secured Debt | $460 Million Credit Facility | LIBOR | Through December 31, 2018
Line of Credit Facility
Applicable margin over reference rate					3.25%
Secured Debt | $35,000 Scrubber Tranche
Line of Credit Facility
Maximum borrowing capacity				$ 35,000
Drawdowns during the period	$ 11,250	$ 12,200	$ 9,300
Number of Capesize vessels for which the scrubber installation will be financed | item				17
Reference rate				LIBOR
Secured Debt | $35,000 Scrubber Tranche | LIBOR | Through September 30, 2019
Line of Credit Facility
Applicable margin over reference rate				2.50%
Secured Debt | Minimum | $460 Million Credit Facility | LIBOR | Period after December 31, 2018
Line of Credit Facility
Applicable margin over reference rate					3.00%
Secured Debt | Minimum | $35,000 Scrubber Tranche | LIBOR | Period After September 30, 2019
Line of Credit Facility
Applicable margin over reference rate				2.25%
Secured Debt | Maximum | $460 Million Credit Facility | LIBOR | Period after December 31, 2018
Line of Credit Facility
Applicable margin over reference rate					3.50%
Secured Debt | Maximum | $35,000 Scrubber Tranche | LIBOR | Period After September 30, 2019
Line of Credit Facility
Applicable margin over reference rate				2.75%
Agreement To Exchange Vessels | Ultramax Vessels
Line of Credit Facility
Number of vessels to be exchanged | item										3
Agreement To Exchange Vessels | Handysize Vessels
Line of Credit Facility
Number of vessels to be exchanged | item										6

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Number of Capesize vessels for which the scrubber installation will be financed.

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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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