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Note 7 - Mortgage Notes Payable (Details Textual) $ in Millions | Dec. 31, 2021 USD ($)
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The 300 N.P [Member] | Mortgage Note, Due June 11, 2022 [Member] |  |
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid | $ 2.2 |
The 300 N.P [Member] | Mortgage Notes [Member] |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.95% | [1],[2]
Minimum [Member] | Model Home [Member] | Mortgage Notes [Member] |  |
Debt Instrument, Interest Rate, Stated Percentage | 2.50% |
Maximum [Member] | Model Home [Member] | Mortgage Notes [Member] |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.33% |
[1] | Interest rates as of December 31, 2021.
[2] | The mortgage note payable for 300 N.P. is an amortizing loan with a balloon payment of $2.2 million due at maturity, on June 11, 2022, and is no longer subject to defeasance or yield maintenance. The Company expects to pay this note in full at or before maturity with proceeds from property sales, property financing and other available cash on hand.

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: 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=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt. + References No definition available. + Details
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