Debt - New Ultraco Debt Facility (Details) - New Ultraco Debt Facility - Line of Credit - Eagle Bulk Ultraco LLC	Jan. 25, 2019 USD ($) vessel	Jun. 09, 2020 USD ($) vessel	Oct. 04, 2019 USD ($)
Debt Instrument [Line Items]
Debt instrument, face amount	$ 208,400,000	$ 22,600,000	$ 34,300,000
Potential increase in maximum principal amount	60,000,000.0
Vessels used to secure borrowings | vessel		2
Debt issuance costs	3,100,000	$ 400,000	$ 400,000
Deferred financing costs		$ 200,000
Maximum cumulative payable	$ 4,600,000
Ultraco Lenders
Debt Instrument [Line Items]
Number of vessels secured by first priority mortgage | vessel	26
Minimum liquidity threshold	$ 600,000
Debt instrument, covenant, percentage of consolidated total debt minimum threshold	7.50%
Minimum ratio of consolidated tangible assets to consolidated total assets covenant	0.30
Ultraco Lenders | Minimum
Debt Instrument [Line Items]
Interest coverage ratio	1.50
Ultraco Lenders | Maximum
Debt Instrument [Line Items]
Interest coverage ratio	2.50
Effective Date, First Year | Ultraco Lenders
Debt Instrument [Line Items]
Periodic principal payment	$ 5,100,000
Effective Date, Second Year To Maturity | Ultraco Lenders
Debt Instrument [Line Items]
Periodic principal payment	$ 7,800,000
LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	2.50%
Secured Debt
Debt Instrument [Line Items]
Debt instrument, face amount	$ 153,400,000
Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility amount	$ 55,000,000.0