Note 11 - Equity (Details Textual) - USD ($) $ / shares in Units, $ in Billions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	May 20, 2022	May 31, 2019
Common Stock, Shares Authorized (in shares)	400,000,000		400,000,000		400,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.001		$ 0.001		$ 0.001
Preferred Stock, Shares Authorized (in shares)	50,000,000		50,000,000		50,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.001		$ 0.001		$ 0.001
Issuance and Sale of Securities, Maximum						$ 0.5
Conversion Ratio for Class Common Stock to OP Unit (in dollars per share)	$ 1		$ 1
Conversion of OP Units to Common Stock [Member]
Conversion of Stock, Shares Converted (in shares)	548	74,872	1,423	75,825
OP Units [Member]
Units of Partnership Interest, Amount (in shares)	50,156,922		50,156,922		49,996,356
General Partners' Capital Account, Units Outstanding (in shares)	49,463,865		49,463,865		49,301,876
Operating Partnership [Member]
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest			98.60%
Weighted-Average Share Ownership	98.60%	98.50%	98.60%	98.50%
The 2019 Equity Distribution Agreements [Member]
Equity Distribution Agreements, Authorized Amount							$ 0.1