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Note C - Securities - Securities Available-for-Sale with Unrealized Losses (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Less than 12 Months - Fair Value | $ 74,587 | $ 50,076
Less than 12 Months - Unrealized Loss | (1,996) | (453)
12 Months or More - Fair Value |  | 3,645
12 Months or More - Unrealized Loss |  | (66)
Fair Value | 74,587 | 53,721
Unrealized Loss | (1,996) | (519)
US Government-sponsored Enterprises Debt Securities [Member] |  |
Less than 12 Months - Fair Value | 10,544 | 7,964
Less than 12 Months - Unrealized Loss | (80) | (46)
12 Months or More - Fair Value |  |
12 Months or More - Unrealized Loss |  |
Fair Value | 10,544 | 7,964
Unrealized Loss | (80) | (46)
Mortgage-backed Securities, Issued by Private Enterprises [Member] |  |
Less than 12 Months - Fair Value | 64,043 | 42,112
Less than 12 Months - Unrealized Loss | (1,916) | (407)
12 Months or More - Fair Value |  | 3,645
12 Months or More - Unrealized Loss |  | (66)
Fair Value | 64,043 | 45,757
Unrealized Loss | $ (1,916) | $ (473)

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- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27337-111563 + Details
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- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27290-111563 + Details
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