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Note 11 - Pledged Collateral Related to Securities Sold Under Repurchase Agreements (Tables) | 12 Months Ended
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Dec. 31, 2020
Notes Tables |
Schedule of Financial Instruments Owned and Pledged as Collateral [Table Text Block] |
|  | 2020 |  |  | 2019 |
|  | Remaining Contractual Maturity of the Agreements |
|  | Overnight |  |  | Overnight |
Securities sold under agreements to repurchase: |  |  |  |  |  |  |  |
U.S. government treasuries |  | $ | 2,069 |  |  | $ | 3,528 |
U.S. government agencies |  |  | 39,362 |  |  |  | 35,557 |
U.S. government mortgage-backed securities |  |  | 14,320 |  |  |  | 19,614 |
Total pledged collateral |  | $ | 55,751 |  |  | $ | 58,699 |

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- Definition Tabular disclosure of financial instruments held by the entity for its own account for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions. Description may include equity, fixed income, debt or other securities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729 + Details
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