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Note 4 - Investment Securities Available-for-Sale (Details) - Securities Available-for-sale (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
Note 4 - Investment Securities Available-for-Sale (Details) - Securities Available-for-sale [Line Items]
Amortized Cost	$ 379,947	$ 383,665
Gross Unrealized Gains	6,592	4,003
Gross Unrealized Losses	4,071	9,535
Estimated Fair Value	382,468	378,133	355,830
US Government Agencies Debt Securities [Member]
Note 4 - Investment Securities Available-for-Sale (Details) - Securities Available-for-sale [Line Items]
Amortized Cost	38,636	46,640
Gross Unrealized Gains	545	843
Gross Unrealized Losses	97	148
Estimated Fair Value	39,084	47,335
Residential Mortgage Backed Securities [Member]
Note 4 - Investment Securities Available-for-Sale (Details) - Securities Available-for-sale [Line Items]
Amortized Cost	227,525	234,206
Gross Unrealized Gains	1,328	1,143
Gross Unrealized Losses	3,724	6,675
Estimated Fair Value	225,129	228,674
Municipal Bond [Member]
Note 4 - Investment Securities Available-for-Sale (Details) - Securities Available-for-sale [Line Items]
Amortized Cost	113,390	102,423
Gross Unrealized Gains	4,716	2,017
Gross Unrealized Losses	250	2,700
Estimated Fair Value	117,856	101,740
Equity Investment Other [Member]
Note 4 - Investment Securities Available-for-Sale (Details) - Securities Available-for-sale [Line Items]
Amortized Cost	396	396
Gross Unrealized Gains	3
Gross Unrealized Losses		12
Estimated Fair Value	$ 399	$ 384

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558



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-Publisher FASB

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-Section 50

-Paragraph 5

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-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562

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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563

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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ 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 210.5-02.2)

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

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