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Note O - Fair Value of Financial Instruments - Fair Value Measurements (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Securities available for sale | $ 101,125 | $ 96,490
Total debt securities, held to maturity, fair value | 18,079 | 19,171
Reported Value Measurement [Member] |  |
Cash and cash equivalents | 74,573 | 40,166
Certificates of deposit in financial institutions | 1,820 | 1,670
Securities available for sale | 101,125 | 96,490
Total debt securities, held to maturity, fair value | 17,581 | 18,665
Restricted investments in bank stocks | 7,506 | 7,506
Loans, net | 761,820 | 727,202
Accrued interest receivable | 2,503 | 2,315
Deposits | 856,724 | 790,452
Other borrowed funds | 35,949 | 37,085
Subordinated debentures | 8,500 | 8,500
Accrued interest payable | 792 | 513
Estimate of Fair Value Measurement [Member] |  |
Cash and cash equivalents | 74,573 | 40,166
Certificates of deposit in financial institutions | 1,820 | 1,670
Securities available for sale | 101,125 | 96,490
Total debt securities, held to maturity, fair value | 18,079 | 19,171
Restricted investments in bank stocks |  |
Loans, net | 760,746 | 727,079
Accrued interest receivable | 2,503 | 2,315
Deposits | 855,923 | 790,916
Other borrowed funds | 34,810 | 35,948
Subordinated debentures | 6,678 | 5,821
Accrued interest payable | 792 | 513
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Cash and cash equivalents | 74,573 | 40,166
Certificates of deposit in financial institutions |  |
Securities available for sale |  |
Total debt securities, held to maturity, fair value |  |
Restricted investments in bank stocks |  |
Loans, net |  |
Accrued interest receivable |  |
Deposits | 253,655 | 209,576
Other borrowed funds |  |
Subordinated debentures |  |
Accrued interest payable | 4 | 4
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Cash and cash equivalents |  |
Certificates of deposit in financial institutions | 1,820 | 1,670
Securities available for sale | 101,125 | 96,490
Total debt securities, held to maturity, fair value | 9,020 | 9,541
Restricted investments in bank stocks |  |
Loans, net |  |
Accrued interest receivable | 268 | 224
Deposits | 602,268 | 581,340
Other borrowed funds | 34,810 | 35,948
Subordinated debentures | 6,678 | 5,821
Accrued interest payable | 788 | 509
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Cash and cash equivalents |  |
Certificates of deposit in financial institutions |  |
Securities available for sale |  |
Total debt securities, held to maturity, fair value | 9,059 | 9,630
Restricted investments in bank stocks |  |
Loans, net | 760,746 | 727,079
Accrued interest receivable | 2,235 | 2,091
Deposits |  |
Other borrowed funds |  |
Subordinated debentures |  |
Accrued interest payable |  |

X
- Definition Fair value portion of a savings certificate entitling the Entity (that is, bearer) to receive interest at an established maturity date, based upon a fixed interest rate. A certificate of deposit may be issued in any denomination. Certificates of deposit are generally issued by commercial banks and, therefore, insured by the FDIC (up to the prescribed limit). Certificates of deposit generally restrict holders from withdrawing funds on demand without the incurrence of penalties. Generally, only certificates of deposit with original maturities of three months or less qualify as cash equivalents. Original maturity means original maturity to the entity holding the investment. As a related 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. + References No definition available. + Details
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X
- Definition Fair value portion of Federal Home Loan Bank and Federal Reserve Bank Stock. + References No definition available. + Details
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X
- Definition Fair value portion of interest payable on debt, including, but not limited to, trade payables. + References No definition available. + Details
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X
- Definition Fair value portion of of interest earned but not received. + References No definition available. + Details
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X
- Definition Fair value portion of other miscellaneous borrowings owed by the reporting entity. + References No definition available. + Details
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X
- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26610-111562 + Details
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X
- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Fair value of investments in debt securities classified as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 + Details
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X
- 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196772 + Details
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