Note 12 - Income Taxes (Details) - USD ($)	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014
Note 12 - Income Taxes (Details) [Line Items]
Income Taxes Receivable	$ 28,900,000	$ 18,100,000
Operating Loss Carryforwards	300,000
Unrecognized Tax Benefits	$ 0	$ 0
Domestic Tax Authority [Member] \| Internal Revenue Service (IRS) [Member] \| Earliest Tax Year [Member]
Note 12 - Income Taxes (Details) [Line Items]
Open Tax Year	2012
State and Local Jurisdiction [Member] \| California Franchise Tax Board [Member] \| Earliest Tax Year [Member]
Note 12 - Income Taxes (Details) [Line Items]
Open Tax Year	2008
Income Tax Examination, Year under Examination	2008
State and Local Jurisdiction [Member] \| California Franchise Tax Board [Member] \| Latest Tax Year [Member]
Note 12 - Income Taxes (Details) [Line Items]
Income Tax Examination, Year under Examination	2011

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- Definition

Tax year being audited in the income tax examination, in CCYY format.

+ References

No definition available.

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Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable.

+ References

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 210.5-02.8)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 5
-Subparagraph c
-Article 7

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Tax year that remains open to examination under enacted tax laws, in CCYY format.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Unrecognized Tax Benefit
-URI http://asc.fasb.org/extlink&oid=6527854

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