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Note 9 - Fair Value of Assets and Liabilities - Fair Value Measurements, Recorded (Details) - Fair Value, Recurring [Member] - USD ($) | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Total assets at fair value | $ 6,456,000 | $ 2,286,000
Total liabilities recorded at fair value | 5,247,000 | 4,839,000
Metal Swaps [Member] |  |
Derivative asset | 6,456,000 | 2,286,000
Embedded Customer Derivatives [Member] |  |
Derivative liability | 4,877 | 2,178,000
Interest Rate Swap [Member] |  |
Derivative liability | 370,000 | 2,661,000
Fair Value, Inputs, Level 1 [Member] |  |
Total assets at fair value | 0 | 0
Total liabilities recorded at fair value | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Metal Swaps [Member] |  |
Derivative asset | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Embedded Customer Derivatives [Member] |  |
Derivative liability | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Interest Rate Swap [Member] |  |
Derivative liability |  | 0
Fair Value, Inputs, Level 2 [Member] |  |
Total assets at fair value | 6,456,000 | 2,286,000
Total liabilities recorded at fair value | 5,247,000 | 4,839,000
Fair Value, Inputs, Level 2 [Member] | Metal Swaps [Member] |  |
Derivative asset | 6,456,000 | 2,286,000
Fair Value, Inputs, Level 2 [Member] | Embedded Customer Derivatives [Member] |  |
Derivative liability | 4,877 | 2,178,000
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member] |  |
Derivative liability | 370,000 | 2,661,000
Fair Value, Inputs, Level 3 [Member] |  |
Total assets at fair value | 0 | 0
Total liabilities recorded at fair value | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Metal Swaps [Member] |  |
Derivative asset | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Embedded Customer Derivatives [Member] |  |
Derivative liability | 0 | 0
Fair Value, Inputs, Level 3 [Member] | Interest Rate Swap [Member] |  |
Derivative liability |  | $ 0

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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313 + Details
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