Note 10 - Derivative Financial Instruments (Detail) - The Notional Amounts And Estimated Fair Values Of Interest Rate Derivative Contracts (USD $)	Jun. 30, 2012	Dec. 31, 2011
Interest rate derivative contract designated as a hedge of cash flows	$ 17,500	$ 17,500
Interest rate derivative contract designated as a hedge of cash flows	(1,939)	(1,992)
Interest rate derivative contract not designated as a hedge of cash flows	15,000	15,000
Interest rate derivative contract not designated as a hedge of cash flows	$ 85	$ 194

Aggregate notional amount of all interest rate derivatives not designated as hedging instruments. Notional amount refers to the monetary amount specified in the interest rate derivative contract.

Reference 1: 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=7476318&loc=SL5579245-113959

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 1B

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959

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