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Note 9 - Fair Value and Interest Rate Risk - Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
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Financial Assets: |  |
Available-for-sale securities, at fair value | $ 21,201 | $ 24,428
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Financial Assets: |  |
Available-for-sale securities, at fair value | 4,656 | 10,441
Corporate Debt Securities [Member] |  |
Financial Assets: |  |
Available-for-sale securities, at fair value | 8,937 | 8,961
Subordinated Notes [Member] |  |
Financial Assets: |  |
Available-for-sale securities, at fair value | 7,608 | 5,026
Reported Value Measurement [Member] |  |
Financial Assets: |  |
Financial assets, total | 721,857 | 708,593
Financial Liabilities: |  |
Financial liabilities, total | 706,751 | 688,918
Estimate of Fair Value Measurement [Member] |  |
Financial Assets: |  |
Financial assets, total | 720,742 | 708,368
Financial Liabilities: |  |
Financial liabilities, total | 706,506 | 687,463
Fair Value, Inputs, Level 1 [Member] | Reported Value Measurement [Member] | Brokered Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 58,592 | 63,932
Fair Value, Inputs, Level 1 [Member] | Reported Value Measurement [Member] | Cash and Due from Banks [Member] |  |
Financial Assets: |  |
Cash and cash equivalents | 5,087 | 2,596
Fair Value, Inputs, Level 1 [Member] | Reported Value Measurement [Member] | Interest-bearing Deposits [Member] |  |
Financial Assets: |  |
Cash and cash equivalents | 55,179 | 89,693
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | Brokered Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 58,539 | 63,897
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | Cash and Due from Banks [Member] |  |
Financial Assets: |  |
Cash and cash equivalents | 5,087 | 2,596
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | Interest-bearing Deposits [Member] |  |
Financial Assets: |  |
Cash and cash equivalents | 55,179 | 89,693
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] |  |
Financial Assets: |  |
Other investments | 4,450 | 4,450
Federal Reserve Bank stock | 2,358 | 2,109
Federal Home Loan Bank stock | 5,489 | 5,609
Accrued interest receivable | 3,063 | 2,726
Financial Liabilities: |  |
FHLB and correspondent bank borrowings | 124,000 | 138,000
Senior notes | 11,647 | 11,628
Subordinated debentures | 8,080 | 8,079
Accrued interest payable | 343 | 118
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Demand Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 78,372 | 76,772
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Savings Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 140,352 | 131,429
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Money Market Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 15,304 | 15,593
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Negotiable Order of Withdrawal (NOW) Accounts [Member] |  |
Financial Liabilities: |  |
Deposits | 26,156 | 29,912
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Time Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 242,183 | 211,686
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Financial Assets: |  |
Available-for-sale securities, at fair value | 4,656 | 10,441
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Corporate Debt Securities [Member] |  |
Financial Assets: |  |
Available-for-sale securities, at fair value | 8,937 | 8,961
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Subordinated Notes [Member] |  |
Financial Assets: |  |
Available-for-sale securities, at fair value | 5,608 | 3,026
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] |  |
Financial Assets: |  |
Other investments | 4,450 | 4,450
Federal Reserve Bank stock | 2,358 | 2,109
Federal Home Loan Bank stock | 5,489 | 5,609
Accrued interest receivable | 3,063 | 2,726
Financial Liabilities: |  |
FHLB and correspondent bank borrowings | 124,120 | 138,149
Senior notes | 11,647 | 11,628
Subordinated debentures | 8,080 | 8,079
Accrued interest payable | 343 | 118
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Demand Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 78,372 | 76,772
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Savings Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 140,352 | 131,429
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Money Market Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 15,304 | 15,593
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Negotiable Order of Withdrawal (NOW) Accounts [Member] |  |
Financial Liabilities: |  |
Deposits | 26,156 | 29,912
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Time Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 242,023 | 210,321
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Financial Assets: |  |
Available-for-sale securities, at fair value | 4,656 | 10,441
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Corporate Debt Securities [Member] |  |
Financial Assets: |  |
Available-for-sale securities, at fair value | 8,937 | 8,961
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Subordinated Notes [Member] |  |
Financial Assets: |  |
Available-for-sale securities, at fair value | 5,608 | 3,026
Fair Value, Inputs, Level 3 [Member] | Reported Value Measurement [Member] |  |
Financial Assets: |  |
Loans receivable, net | 625,030 | 576,982
Financial Liabilities: |  |
Note payable | 1,722 | 1,769
Fair Value, Inputs, Level 3 [Member] | Reported Value Measurement [Member] | Subordinated Notes [Member] |  |
Financial Assets: |  |
Available-for-sale securities, at fair value | 2,000 | 2,000
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member] |  |
Financial Assets: |  |
Loans receivable, net | 623,915 | 576,757
Financial Liabilities: |  |
Note payable | 1,570 | 1,565
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member] | Subordinated Notes [Member] |  |
Financial Assets: |  |
Available-for-sale securities, at fair value | $ 2,000 | $ 2,000

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- Definition Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities. + References No definition available. + Details
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