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Note 11 - Fair Value of Financial Instruments and Fair Value Measurements - Financial Instruments (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Reported Value Measurement [Member] |  |
Assets |  |
Cash and Short-Term Investments | $ 85,705 | $ 60,155
Investment Securities Available for Sale | 357,889 | 353,066
Federal Home Loan Bank Stock | 2,782 | 2,978
Loans, Net | 772,889 | 774,249
Bank-Owned Life Insurance | 17,184 | 17,598
Liabilities |  |
Deposits | 1,111,678 | 1,085,125
Subordinated Debentures | 24,229 | 24,229
Other Borrowed Money | 39,000 | 44,000
Estimate of Fair Value Measurement [Member] |  |
Assets |  |
Cash and Short-Term Investments | 85,705 | 60,155
Investment Securities Available for Sale | 357,889 | 353,066
Federal Home Loan Bank Stock | 2,782 | 2,978
Loans, Net | 769,078 | 769,809
Bank-Owned Life Insurance | 17,184 | 17,598
Liabilities |  |
Deposits | 1,113,541 | 1,086,503
Subordinated Debentures | 24,229 | 24,229
Other Borrowed Money | 39,112 | 44,032
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Assets |  |
Cash and Short-Term Investments | 85,705 | 60,155
Investment Securities Available for Sale |  |
Federal Home Loan Bank Stock | 2,782 | 2,978
Loans, Net |  |
Bank-Owned Life Insurance | 17,184 | 17,598
Liabilities |  |
Deposits | 773,179 | 744,094
Subordinated Debentures |  |
Other Borrowed Money |  |
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Assets |  |
Cash and Short-Term Investments |  |
Investment Securities Available for Sale | 353,992 | 348,788
Federal Home Loan Bank Stock |  |
Loans, Net | 767,370 | 766,457
Bank-Owned Life Insurance |  |
Liabilities |  |
Deposits | 340,362 | 342,409
Subordinated Debentures | 24,229 | 24,229
Other Borrowed Money | 39,112 | 44,032
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Assets |  |
Cash and Short-Term Investments |  |
Investment Securities Available for Sale | 3,897 | 4,278
Federal Home Loan Bank Stock |  |
Loans, Net | 1,708 | 3,352
Bank-Owned Life Insurance |  |
Liabilities |  |
Deposits |  |
Subordinated Debentures |  |
Other Borrowed Money |  |

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- Definition The fair value amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity. + References No definition available. + Details
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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References No definition available. + Details
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- Definition Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Fair value portion of the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI). + References No definition available. + Details
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- Definition Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits. + References No definition available. + Details
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- Definition Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- References No definition available. + Details
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- Definition Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock. + References No definition available. + Details
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196772 + Details
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