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Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Aug. 03, 2021 | Apr. 15, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Business Combination, Acquisition Related Costs |  |  | $ (0) | $ 50,191 | $ (0)
Real Estate Under Development Period After Completion Cessation of Cost Capitalization (Year) |  |  | 1 year |  |
Restricted Cash, Total |  |  | $ 2,900 | 9,000 |
Land Held for Development From Real Estate Under Development to Land [Member] |  |  |  |  |
Prior Period Reclassification Adjustment |  |  |  | 5,700 |
Restricted Stock [Member] | Share-based Compensation Award, Vesting on Fourth or Fifth Anniversary [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage |  |  | 100.00% |  |
Restricted Stock [Member] | Share-Based Payment Arrangement, Tranche Two [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  | 4 years |  |
Restricted Stock [Member] | Share-Based Payment Arrangement, Tranche Three [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  | 5 years |  |
Restricted Stock [Member] | Share-based Compensation Award, Vesting After the Fifth Anniversary [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage |  |  | 20.00% |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  | 10 years |  |
The 2010 Plan [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) |  |  | 10,000,000 |  |
Investment Cash Held as Collateral for Letters of Credit [Member] |  |  |  |  |
Restricted Cash, Total |  |  |  | 6,500 |
Minimum [Member] | Performance Shares [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  | 1 year |  |
Minimum [Member] | Computer Software, Intangible Asset [Member] |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  | 3 years |  |
Maximum [Member] | Performance Shares [Member] |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  | 3 years |  |
Maximum [Member] | Computer Software, Intangible Asset [Member] |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  | 10 years |  |
Building and Building Improvements [Member] | Minimum [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  | 5 years |  |
Building and Building Improvements [Member] | Maximum [Member] |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  | 50 years |  |
Weingarten Realty Investors [Member] |  |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Per Each Acquired Company Share (in shares) | 1.408 | 1.408 |  |  |
Business Combination, Consideration Transferred, Cash Per Each Acquired Company Share (in dollars per share) |  | $ 2.20 |  |  |
Business Combination, Acquisition Related Costs |  |  |  | $ 50,200 | $ 50,200

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