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Capital Stock and Changes in Capital Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Arrangements with Employees and Nonemployees
Compensation cost on restricted stock	$ 7,442	$ 10,511	$ 7,581
Unrecognized cost for unvested restricted shares	$ 20,054	$ 3,978
Total compensation cost not yet recognized, Period for recognition	1 year 7 months 24 days

X

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Amount of noncash expense for award of restricted stock or unit under share-based payment arrangement.

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