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Note 11 - Fair Value and Interest Rate Risk - Financial Assets and Liabilities (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Financial Assets: |  |
Available-for-sale securities | $ 40,264 | $ 25,576
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Financial Assets: |  |
Available-for-sale securities | 21,235 | 7,224
Corporate Debt Securities [Member] |  |
Financial Assets: |  |
Available-for-sale securities | 13,007 | 13,804
Subordinated Notes [Member] |  |
Financial Assets: |  |
Available-for-sale securities | 4,525 | 4,548
Reported Value Measurement [Member] |  |
Financial Assets: |  |
Financial assets, total | 861,968 | 804,504
Financial Liabilities: |  |
Financial liabilities, total | 842,579 | 779,377
Estimate of Fair Value Measurement [Member] |  |
Financial Assets: |  |
Financial assets, total | 854,307 | 793,970
Financial Liabilities: |  |
Financial liabilities, total | 838,139 | 777,850
Fair Value, Inputs, Level 1 [Member] | Reported Value Measurement [Member] | Brokered Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 166,020 | 138,129
Fair Value, Inputs, Level 1 [Member] | Reported Value Measurement [Member] | Cash and Due from Banks [Member] |  |
Financial Assets: |  |
Cash and cash equivalents | 5,596 | 3,582
Fair Value, Inputs, Level 1 [Member] | Reported Value Measurement [Member] | Interest-bearing Deposits [Member] |  |
Financial Assets: |  |
Cash and cash equivalents | 43,636 | 45,659
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | Brokered Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 165,437 | 137,870
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | Cash and Due from Banks [Member] |  |
Financial Assets: |  |
Cash and cash equivalents | 5,596 | 3,582
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member] | Interest-bearing Deposits [Member] |  |
Financial Assets: |  |
Cash and cash equivalents | 43,636 | 45,659
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] |  |
Financial Assets: |  |
Available-for-sale securities | 1,497 |
Other investments | 4,450 | 4,450
Federal Reserve Bank stock | 2,833 | 2,502
Federal Home Loan Bank stock | 4,928 | 5,889
Accrued interest receivable | 3,612 | 3,496
Financial Liabilities: |  |
FHLB and correspondent bank borrowings | 90,000 | 120,000
Senior notes | 11,759 | 11,703
Subordinated debt | 9,720 |
Junior subordinated debt owed to unconsolidated trust | 8,092 | 8,086
Accrued interest payable | 1,563 | 569
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Demand Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 81,687 | 81,197
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Savings Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 100,294 | 135,975
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Money Market Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 62,314 | 16,575
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Negotiable Order of Withdrawal (NOW) Accounts [Member] |  |
Financial Liabilities: |  |
Deposits | 24,827 | 25,476
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Time Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 284,390 | 240,087
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 | 21,235 | 7,224
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Corporate Debt Securities [Member] |  |
Financial Assets: |  |
Available-for-sale securities | 13,007 | 13,804
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member] | Subordinated Notes [Member] |  |
Financial Assets: |  |
Available-for-sale securities | 4,525 | 4,548
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] |  |
Financial Assets: |  |
Available-for-sale securities | 1,497 |
Other investments | 4,450 | 4,450
Federal Reserve Bank stock | 2,833 | 2,502
Federal Home Loan Bank stock | 4,928 | 5,889
Accrued interest receivable | 3,612 | 3,496
Financial Liabilities: |  |
FHLB and correspondent bank borrowings | 89,266 | 120,218
Senior notes | 11,108 | 11,249
Subordinated debt | 9,158 |
Junior subordinated debt owed to unconsolidated trust | 8,092 | 8,086
Accrued interest payable | 1,563 | 569
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Demand Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 81,687 | 81,197
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Savings Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 100,294 | 135,975
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Money Market Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 62,314 | 16,575
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Negotiable Order of Withdrawal (NOW) Accounts [Member] |  |
Financial Liabilities: |  |
Deposits | 24,827 | 25,476
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Time Deposits [Member] |  |
Financial Liabilities: |  |
Deposits | 282,671 | 239,219
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 | 21,235 | 7,224
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Corporate Debt Securities [Member] |  |
Financial Assets: |  |
Available-for-sale securities | 13,007 | 13,804
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member] | Subordinated Notes [Member] |  |
Financial Assets: |  |
Available-for-sale securities | 4,525 | 4,548
Fair Value, Inputs, Level 3 [Member] | Reported Value Measurement [Member] |  |
Financial Assets: |  |
Loans receivable, net | 756,649 | 713,350
Financial Liabilities: |  |
Note payable | 1,436 | 1,580
Contingent consideration liability | 477 |
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member] |  |
Financial Assets: |  |
Loans receivable, net | 748,988 | 702,816
Financial Liabilities: |  |
Note payable | 1,245 | 1,416
Contingent consideration liability | $ 477 |

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