Note 15 - Supplemental Schedule of Non-cash Investing / Financing Activities - Non-cash Investing and Financing Activities (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Acquisition of real estate interests through proceeds held in escrow	$ 0	$ 30,970
Surrender of restricted common stock	5,329	3,948
Dividends payable	5,366	126,203	$ 126,274
Capital expenditures accrual	$ 41,373	$ 73,958

Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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