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Note 3 - Real Estate - Purchase Price Allocation (Details) $ in Thousands | 9 Months Ended
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Sep. 30, 2020 USD ($)
Allocation | $ 7,073
Tenant Improvements [Member] |
Allocation, finite-lived in tangibles | $ 382
Weighted-average amortization period, finite-lived in tangibles (Year) | 19 years 4 months 24 days
Leases, Acquired-in-Place [Member] |
Allocation, finite-lived in tangibles | $ 925
Weighted-average amortization period, finite-lived in tangibles (Year) | 19 years 4 months 24 days
Land [Member] |
Allocation, Property Plant and Equipment | $ 935
Building [Member] |
Allocation, Property Plant and Equipment | $ 4,610
Building (Year) | 50 years
Building Improvements [Member] |
Allocation, Property Plant and Equipment | $ 221
Building (Year) | 45 years

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