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Income Taxes - Additional Information (Details)	Dec. 31, 2021
Income Tax Uncertainties [Abstract]
Shipping Income Percentage	50.00%
Tax Rate On US Source Shipping Income	4.00%

X

- Definition

Tax rate applied by the tax authorities on US source shipping income

+ References

No definition available.

+ Details

Name:	dsx_TaxRateOnUsSourceShippingIncome
Namespace Prefix:	dsx_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The percentage of Company's shipping income that would be treated as being United States source income.

+ References

No definition available.

+ Details

Name:	dsx_UsSourceIncomePercentage
Namespace Prefix:	dsx_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_IncomeTaxUncertaintiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration