Note 3 - Real Estate (Details Textual) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Operating Lease, Lease Income, Total	$ 278,871	$ 286,004
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, Net of Tax, Attributable to Noncontrolling Interest	3,000
Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation	1,000
Acquired [Member]
Operating Lease, Lease Income, Total	1,600
Rite Aid Distribution Center [Member]
Prepaid Rent	$ 17,700

Amount of tax expense (benefit) on gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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