Note 12 - Earnings Per Share - (Details Textual) - shares shares in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share [Abstract]
Common stock conversion basis			one-for-one basis
Weighted average number of antidilutive convertible preferred stock, restricted stock, RSUs and OP units outstanding	7.0	4.2	6.9	4.1