Note 11 - Derivative Financial Instrument (Details Textual) - Interest Rate Swap [Member] $ in Millions	12 Months Ended
Dec. 31, 2015 USD ($)
London Interbank Offered Rate (LIBOR) [Member]
Derivative, Variable Interest Rate	0.43%
Derivative Liability, Notional Amount	$ 25.0
Derivative, Maturity Date	Jun. 15, 2016
Derivative, Fixed Interest Rate	5.587%
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	$ 0.5

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994

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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/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Notional Amount
-URI http://asc.fasb.org/extlink&oid=6519104

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5579245-113959

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- Definition

Date the derivative contract matures, in CCYY-MM-DD format.

+ References

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- Definition

Variable interest rate in effect as of the balance sheet date related to the interest rate derivative.

+ References

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- Details

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