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Note 14 - Financial Derivatives (Details) (USD $) | 3 Months Ended | 9 Months Ended |  | 3 Months Ended | 9 Months Ended |  | 0 Months Ended | 1 Months Ended |  | 1 Months Ended | 0 Months Ended | 3 Months Ended | 9 Months Ended |  |  | 9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended |
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Sep. 30, 2014 | Sep. 30, 2014 | May 31, 2014 | Sep. 30, 2014 Interest Expense [Member] Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] | Sep. 30, 2014 Interest Expense [Member] Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] | May 31, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] Weighted Average [Member] | Sep. 30, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] | May 31, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] | Sep. 30, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] | Jun. 30, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Fair Value Hedging [Member] Minimum [Member] | Jun. 30, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Fair Value Hedging [Member] Maximum [Member] | Sep. 30, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Fair Value Hedging [Member] | Sep. 30, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Fair Value Hedging [Member] | Sep. 30, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Fair Value Hedging [Member] | Jun. 30, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Fair Value Hedging [Member] | May 31, 2014 Designated as Hedging Instrument [Member] Cash Flow Hedging [Member] London Interbank Offered Rate (LIBOR) [Member] Weighted Average [Member] | Sep. 30, 2014 Positive Fair Value Member | Dec. 31, 2013 Positive Fair Value Member | Sep. 30, 2014 Negative Fair Value Member | Dec. 31, 2013 Negative Fair Value Member | Sep. 30, 2014 Cash [Member]
Note 14 - Financial Derivatives (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Asset, Number of Instruments Held |  |  |  |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Notional Amount |  |  |  |  |  |  |  | $ 119,100,000 | $ (119,100,000) |  |  |  | $ 147,400,000 | $ 147,400,000 | $ 148,100,000 |  |  |  |  |  |
Derivative, Original Maturity |  |  |  |  |  |  |  | 10 years |  | 4 years | 8 years |  |  |  |  |  |  |  |  |  |
Junior Subordinated Notes |  |  | 119,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Average Fixed Interest Rate |  |  |  |  |  | 2.61% |  |  |  |  |  |  |  |  | 4.67% |  |  |  |  |  |
Derivative, Average Variable Interest Rate |  |  |  |  |  |  |  |  |  |  |  |  | 3.13% | 3.13% |  | 0.23% |  |  |  |  |
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax | 100,000 | (163,000) |  |  |  |  | (163,000) |  |  |  |  | 442,000 |  |  |  |  |  |  |  |  |
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net |  |  |  | 723,000 | 824,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Liability, Number of Instruments Held |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 |  |  |  |  |  |
Derivative, Average Basis Spread on Variable Rate |  |  |  |  |  |  |  |  |  |  |  |  | 2.98% | 2.98% |  |  |  |  |  |  |
Net Settlement of Derivatives Reducing Interest Income |  |  |  |  |  |  |  |  |  |  |  |  | 580,000 | 606,000 |  |  |  |  |  |  |
Collateral Already Posted, Aggregate Fair Value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,300,000
Notional Amount Of Option Contract | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 200,000 |  |  |
Sum of Spot and Forward Contract Notional Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 183,800,000 | 267,600,000 | 201,200,000 | 236,300,000 |
Increase Decrease in Fair Value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,900,000 | 6,200,000 | (4,400,000) | (6,100,000) |
Open Option Contracts Written, at Fair Value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 83 |  |  |

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- Definition Amount of periodic net settlement of interest rate swaps reducing interest income. + References No definition available. + Details
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- Definition Notional Amount Of Option Contract + References No definition available. + Details
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- Definition Sum of Spot and Forward Contract Notional Amount + References No definition available. + Details
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- 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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- Definition The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624258-113959 + Details
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- Definition The number of derivative instruments of a particular derivative asset or group of derivative assets held by the entity. + 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=35706170&loc=SL5580258-113959 Reference 2: 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=35706170&loc=SL5579245-113959 + Details
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- Definition The average percentage points added to the reference rate to compute the variable rate on the group of interest rate derivatives. + References No definition available. + Details
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- Definition Average variable interest rate related to the group of interest rate derivatives. + References No definition available. + Details
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- Definition The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4D -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624177-113959 + Details
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- Definition The number of derivative instruments of a particular derivative liability or group of derivative liabilities held by the entity. + 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=35706170&loc=SL5580258-113959 Reference 2: 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=35706170&loc=SL5579245-113959 + Details
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Junior Subordinated Notes, which have a lower priority than senior instruments. + References Reference 1: 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 Reference 2: 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(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13, 16 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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