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Note 13 - Mortgages and Construction Loan Payable (Details Textual) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2018 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Long-term Debt, Total |  | $ 4,381.5 | $ 4,596.1
Gain (Loss) on Forgiveness of Debt |  | 4.3 |
Accrued Interest Extinguished |  | $ 3.4 |
Construction Loans [Member] |  |  |
Debt Instrument, Commitment | $ 67.0 |  |
Debt Instrument, Interest Rate, Effective Percentage |  | 4.23% |
Long-term Debt, Total |  | $ 51.0 |
Construction Loans [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.80% |  |
Mortgages [Member] |  |  |
Long-term Debt, Total |  | 492.4 | 882.8
Deconsolidation of Mortgage Loans |  | 206.0 |
Long-term Debt, Fair Value |  | 13.1 | 19.3
Real Estate Disposed of Through Foreclosure |  | 12.4 |
Mortgages [Member] | Encumbered Operating Properties [Member] |  |  |
Repayments of Long-term Debt, Total |  | 205.6 | 692.9
Long-term Debt, Fair Value |  | $ 0.9 | $ 5.8
Number of Real Estate Properties |  | 6 | 27
Mortgages [Member] | Operating Properties [Member] |  |  |
Long-term Debt, Fair Value |  |  | $ 8.5
Number of Real Estate Properties |  |  | 2
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt |  |  | $ 257.5
Mortgages [Member] | Operating Properties [Member] | Acquired [Member] |  |  |
Number of Real Estate Properties |  |  | 1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt |  |  | $ 206.0

X
- Definition The amount of accrued interest extinguished. + References No definition available. + Details
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- Definition The amount of debt instrument that has been committed under a certain agreement. + References No definition available. + Details
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- Definition The amount of mortgage loans deconsolidated. + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of land and buildings disposed of through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement. + References No definition available. + Details
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- Definition Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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