Note 10 - Debt (Details Textual) - 2012 Mortgage [Member] - Rabobank N.A [Member] - Quad Ortega Hill LLC [Member] - USD ($)		12 Months Ended
May 30, 2012	Jan. 31, 2021
Debt Instrument, Face Amount	$ 16,100,000
Debt Instrument, Periodic Payment, Total	88,100
Final Principal Payment	11,700,000
Loans Payable to Bank, Total		$ 12,400,000
Swap [Member]
Derivative Liability, Notional Amount	$ 16,100,000
Derivative, Fixed Interest Rate	4.31%
London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	2.25%	0.13%

The required amount due as a lump sum payment on final maturity date.

No definition available.

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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

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

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- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

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- Definition

Nominal or face amount used to calculate payments on the derivative liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of loans from a bank with maturities initially due after one year or beyond the normal operating cycle if longer.

+ References

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