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Note 13 - Condensed Financial Statements of Parent Company (Details) - Condensed Balance Sheets (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | --- | --- | ---
Assets |  |  |  |
Cash due from subsidiaries | $ 12,894 us-gaap_CashAndDueFromBanks | $ 13,283 us-gaap_CashAndDueFromBanks | $ 14,783 us-gaap_CashAndDueFromBanks | $ 11,897 us-gaap_CashAndDueFromBanks
Interest-bearing deposits | 102,548 us-gaap_InterestBearingDepositsInBanks | 98,066 us-gaap_InterestBearingDepositsInBanks |  |
Securities available for sale | 222,844 us-gaap_AvailableForSaleSecurities | 181,712 us-gaap_AvailableForSaleSecurities |  |
Securities held to maturity (fair value approximates $450 at December 31, 2014 and $0 at December 31, 2013) | 161,452 us-gaap_HeldToMaturitySecurities | 163,983 us-gaap_HeldToMaturitySecurities |  |
Other assets | 7,767 us-gaap_OtherAssets | 13,341 us-gaap_OtherAssets |  |
Total assets | 1,154,731 us-gaap_Assets | 1,110,630 us-gaap_Assets |  |
Liabilities and Stockholders’ Equity |  |  |  |
Other liabilities | 5,932 us-gaap_OtherLiabilities | 4,610 us-gaap_OtherLiabilities |  |
Stockholders’ equity | 166,303 us-gaap_StockholdersEquity | 145,892 us-gaap_StockholdersEquity | 150,109 us-gaap_StockholdersEquity | 141,299 us-gaap_StockholdersEquity
Total liabilities and stockholders’ equity | 1,154,731 us-gaap_LiabilitiesAndStockholdersEquity | 1,110,630 us-gaap_LiabilitiesAndStockholdersEquity |  |
Parent Company [Member] |  |  |  |
Assets |  |  |  |
Cash due from subsidiaries | 10 us-gaap_CashAndDueFromBanks / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 27 us-gaap_CashAndDueFromBanks / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Interest-bearing deposits | 477 us-gaap_InterestBearingDepositsInBanks / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 690 us-gaap_InterestBearingDepositsInBanks / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Securities available for sale | 127 us-gaap_AvailableForSaleSecurities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 623 us-gaap_AvailableForSaleSecurities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Securities held to maturity (fair value approximates $450 at December 31, 2014 and $0 at December 31, 2013) | 452 us-gaap_HeldToMaturitySecurities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |  |
Investments in subsidiaries, at equity | 165,647 us-gaap_EquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 144,513 us-gaap_EquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Other assets | 188 us-gaap_OtherAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 478 us-gaap_OtherAssets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total assets | 166,901 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 146,331 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Liabilities and Stockholders’ Equity |  |  |  |
Other liabilities | 598 us-gaap_OtherLiabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 439 us-gaap_OtherLiabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Stockholders’ equity | 166,303 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 145,892 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total liabilities and stockholders’ equity | $ 166,901 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | $ 146,331 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + 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 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 + Details
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- Definition For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.1) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1, 2, 3 -Article 9 + Details
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + 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 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570 + Details
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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