Note 9 - Notes, Mortgages and Construction Loan Payable (Details Textual) $ in Millions	6 Months Ended
Jun. 30, 2019 USD ($)
Long-term Line of Credit, Total	$ 135.0
Mortgage Debt Encumbered Operating Property [Member]
Mortgage Debt Repaid During Period, Number of Encumbered Operating Properties	2
Mortgage Debt Encumbered Operating Property [Member]
Repayments of Long-term Debt, Total	$ 6.2
Construction Loan [Member]
Debt Instrument, Commitment	67.0
Long-term Debt, Total	58.1
Revolving Credit Facility [Member]
Line of Credit Facility, Current Borrowing Capacity	2,250.0
Letter of Credit [Member]
Long-term Line of Credit, Total	$ 0.3

The amount of debt instrument that has been committed under a certain agreement.

No definition available.

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- Definition

Represents number of encumbered operating properties for mortgage debt repaid during period.

+ References

No definition available.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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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
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- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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