Note 7 - Accounts and Notes Receivable - Components of Accounts and Notes Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Billed tenant receivables	$ 39,736	$ 33,801
Unbilled common area maintenance, insurance and tax reimbursements	40,862	56,001
Deferred rent receivables	1,401	1,905
Defined benefit plan receivable	14,553	14,421
Other receivables	9,066	8,361
Straight-line rent receivables	197,445	189,737
Total accounts and notes receivable, net	$ 303,063	$ 304,226