Basis of Presentation and General Information (Details) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2021 USD ($) $ / shares shares	Jun. 30, 2022 USD ($) vessel segment bank t $ / shares	Jun. 30, 2021 USD ($) $ / shares	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) $ / shares	Mar. 31, 2021 USD ($) $ / shares	Dec. 31, 2020 USD ($)	May 04, 2018 t
Property, Plant and Equipment [Line Items]
Number of business segments | segment		1
Number of vessels | vessel		53
Dead weight tonnage of operating fleet | t		3,190,000
Average age of operating fleet		9 years 9 months 18 days
Common stock, par value (in dollars per share) | $ / shares		$ 0.01			$ 0.01
Proceeds from issuance of shares under ATM Offering, net of commissions	$ 27,100	$ 0	$ 27,372
Stockholders' equity attributable to parent	526,258	765,495	526,258	$ 693,769	$ 671,266	$ 480,896	$ 470,418
Convertible Debt | Convertible Bond Debt
Property, Plant and Equipment [Line Items]
Debt discount		866			13,165
Additional paid-in capital
Property, Plant and Equipment [Line Items]
Stockholders' equity attributable to parent	979,683	963,482	979,683	961,930	982,746	943,600	943,572
Accumulated deficit
Property, Plant and Equipment [Line Items]
Stockholders' equity attributable to parent	$ (453,064)	$ (210,854)	$ (453,064)	$ (278,858)	(313,495)	$ (462,289)	$ (472,138)
Cumulative Effect, Period of Adoption, Adjustment
Property, Plant and Equipment [Line Items]
Stockholders' equity attributable to parent					(12,050)
Cumulative Effect, Period of Adoption, Adjustment | Additional paid-in capital
Property, Plant and Equipment [Line Items]
Stockholders' equity attributable to parent					(20,726)
Cumulative Effect, Period of Adoption, Adjustment | Accumulated deficit
Property, Plant and Equipment [Line Items]
Stockholders' equity attributable to parent					8,676
Accounting Standards Update 2020-06 | Convertible Debt | Convertible Bond Debt
Property, Plant and Equipment [Line Items]
Debt discount					(12,000)
Accounting Standards Update 2020-06 | Cumulative Effect, Period of Adoption, Adjustment | Additional paid-in capital
Property, Plant and Equipment [Line Items]
Stockholders' equity attributable to parent					(20,700)
Accounting Standards Update 2020-06 | Cumulative Effect, Period of Adoption, Adjustment | Accumulated deficit
Property, Plant and Equipment [Line Items]
Stockholders' equity attributable to parent					$ 8,700
ATM Offering
Property, Plant and Equipment [Line Items]
Common stock, par value (in dollars per share) | $ / shares						$ 0.01
Consideration authorized						$ 50,000
Shares issued (in shares) | shares	581,385
Weighted-average sales price (in dollars per share) | $ / shares	$ 47.97		$ 47.97
2013 Built Ultramax Vessel
Property, Plant and Equipment [Line Items]
Dead weight tonnage of operating fleet | t								61,425
Number of vessels charted-in | vessel		5
Remaining lease term		1 year
Supramax Vessels
Property, Plant and Equipment [Line Items]
Vessels in operation | bank		27
Ultramax Vessels
Property, Plant and Equipment [Line Items]
Vessels in operation | bank		26