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Note 9 - Hedging Activities (Details) - USD ($)	1 Months Ended
	Feb. 29, 2012	Sep. 30, 2015	Dec. 31, 2014
Note 9 - Hedging Activities (Details) [Line Items]
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust	$ 32,000,000	$ 54,983,000	$ 54,472,000
Fair Value of Interest Rate Swap Agreement Liability		$ 500,000	$ 300,000
London Interbank Offered Rate (LIBOR) [Member] | Junior Subordinated Debt [Member]
Note 9 - Hedging Activities (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate	2.18%
Derivative, Notional Amount	$ 32,000,000

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

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



-Publisher SEC



-Name Regulation S-X (SX)



-Number 210



-Article 12



-Section 13



-Sentence Column B

+ Details

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X

- Definition

Fair value disclosure of the liability related to a derivative interest rate swap agreement.

+ References

No definition available.

+ Details

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- References

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.

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- Definition

Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 944



-SubTopic 210



-Section S99



-Paragraph 1



-Subparagraph (SX 210.7-03.16)



-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 942



-SubTopic 210



-Section S99



-Paragraph 1



-Subparagraph (SX 210.9-03.16)



-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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