Note 7 - Debt (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Jan. 14, 2004
Debt Instrument, Collateral	The Mortgage Notes are secured by the real property occupied by Spitz pursuant to a Mortgage and Security Agreement. The real property had a carrying value of $4,215 as of December 31, 2016. The Mortgage Notes are guaranteed by E&S.
Line of Credit Facility, Maximum Borrowing Capacity	$ 1,100
Long-term Line of Credit	$ 0
Line of Credit
Debt Instrument, Interest Rate Terms	Under the line of credit agreement, interest is charged on amounts borrowed at the lender's prime rate less 0.25%.
First Mortgage Note Payable
Debt Instrument, Face Amount		$ 3,200
Long-term Debt, Maturities, Repayment Terms	The First Mortgage Note requires repayment in monthly installments of principal and interest over 20 years. On each third anniversary of the First Mortgage Note, the interest rate is adjusted to the greater of 5.75% or 3% over the Three-Year Constant Maturity Treasury Rate published by the United States Federal Reserve ('3YCMT').
Debt Instrument, Interest Rate, Basis for Effective Rate	On January 14, 2016, the 3YCMT was 1.14% and the interest rate on the First Mortgage Note remained at 5.75% per annum. As a result, the monthly installment amount remained at $23.
Debt Instrument, Interest Rate Terms	payment and rate subject to adjustment every 3 years, next adjustment January 14, 2019
Second Mortgage Note Payable
Debt Instrument, Interest Rate, Basis for Effective Rate	On September 11, 2013, the fifth anniversary of the Second Mortgage Note, the 3YCMT was 0.88%. As a result, interest continues at 5.75% until possible adjustment on the next 5-year anniversary. The monthly installment also remains unchanged at $4.
Debt Instrument, Interest Rate Terms	payment and rate subject to adjustment every 5 years, next adjustment October 1, 2018

Discussion of whether the debt instrument is secured or unsecured, and, if secured, a description of the collateral and guarantees required or provided.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
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Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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Description of any adjustments made to the stated rate to determine the effective rate.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
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-Paragraph 1
-Subparagraph (SX 210.9-03.16)
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 20, 22
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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Disclosure of timing of required repayments, sinking fund requirements, and other redeemable securities at fixed or determinable prices and dates in the five years immediately following the date of the latest balance sheet presented in the financial statements, and the amount thereafter to fully repay the principal of long-term debt. These disclosures may be made either on an individual debt or security basis, by type of debt or security basis, or on a combined basis.

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