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DERIVATIVE FINANCIAL INSTRUMENTS: Derivative Financial Instruments Level 4 (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Fair Value |  |  |  |
Derivative Asset, Fair Value, Gross Asset | $ 2,199 |  | $ 74,346 |
Derivative Asset, Fair Value, Gross Liability | (2,110) |  | (33,428) |
Derivative Asset, Fair Value, Amount Offset Against Collateral | 89 |  | 40,918 |
Derivative Liability, Fair Value, Gross Liability | 46,358 |  | 21,589 |
Derivative Liability, Fair Value, Gross Asset | (40,426) |  | (14,801) |
Derivative Liability, Fair Value, Amount Offset Against Collateral | 5,932 |  | 6,788 |
Derivatives in a net liability position | 63,900 |  |  |
Collateral Already Posted, Aggregate Fair Value | 53,300 |  |  |
Additional Collateral, Aggregate Fair Value | 14,200 |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Derivative Liability, Collateral, Right to Reclaim Cash, Offset |  |  | 18,600 |
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset | 36,600 |  |  |
Other current assets | Financial Swaps |  |  |  |
Fair Value |  |  |  |
Derivative Asset, Fair Value, Gross Asset | 241 |  | 72,548 |
Derivative Asset, Fair Value, Gross Liability | (169) |  | (32,609) | [1]
Derivative Asset, Fair Value, Amount Offset Against Collateral | 72 |  | 39,939 |
Derivative Liability, Fair Value, Gross Liability | 169 |  | 13,982 |
Derivative Liability, Fair Value, Gross Asset | (169) |  | (13,982) |
Derivative Liability, Fair Value, Amount Offset Against Collateral | 0 |  | 0 |
Other current assets | Forward contracts |  |  |  |
Fair Value |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  |  | 400 |
Derivative Asset, Fair Value, Gross Liability |  |  | 0 |
Derivative Asset, Fair Value, Amount Offset Against Collateral |  |  | 400 |
Derivative Liability, Fair Value, Gross Liability |  |  | 0 |
Derivative Liability, Fair Value, Gross Asset |  |  | 0 |
Derivative Liability, Fair Value, Amount Offset Against Collateral |  |  | 0 |
Other current liabilities | Financial Swaps |  |  |  |
Fair Value |  |  |  |
Derivative Asset, Fair Value, Gross Asset | 1,476 |  | 132 |
Derivative Asset, Fair Value, Gross Liability | (1,476) |  | (132) |
Derivative Asset, Fair Value, Amount Offset Against Collateral | 0 |  | 0 |
Derivative Liability, Fair Value, Gross Liability | 41,977 |  | 1,577 |
Derivative Liability, Fair Value, Gross Asset | (38,045) | [2] | (132) |
Derivative Liability, Fair Value, Amount Offset Against Collateral | 3,932 |  | 1,445 |
Other current liabilities | Forward contracts |  |  |  |
Fair Value |  |  |  |
Derivative Asset, Fair Value, Gross Asset | 0 |  | 0 |
Derivative Asset, Fair Value, Gross Liability | 0 |  | 0 |
Derivative Asset, Fair Value, Amount Offset Against Collateral | 0 |  | 0 |
Derivative Liability, Fair Value, Gross Liability | 2,000 |  | 2,071 |
Derivative Liability, Fair Value, Gross Asset | 0 |  | 0 |
Derivative Liability, Fair Value, Amount Offset Against Collateral | 2,000 |  | 2,071 |
Other liabilities |  |  |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |  |  |
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Offset | 1,700 |  |  |
Other liabilities | Financial Swaps |  |  |  |
Fair Value |  |  |  |
Derivative Asset, Fair Value, Gross Asset | 376 |  | 644 |
Derivative Asset, Fair Value, Gross Liability | (376) |  | (644) |
Derivative Asset, Fair Value, Amount Offset Against Collateral | 0 |  | 0 |
Derivative Liability, Fair Value, Gross Liability | 2,123 |  | 2,136 |
Derivative Liability, Fair Value, Gross Asset | (2,123) | [3] | (644) |
Derivative Liability, Fair Value, Amount Offset Against Collateral | 0 |  | 1,492 |
Other liabilities | Forward contracts |  |  |  |
Fair Value |  |  |  |
Derivative Asset, Fair Value, Gross Asset |  |  | 0 |
Derivative Asset, Fair Value, Gross Liability |  |  | 0 |
Derivative Asset, Fair Value, Amount Offset Against Collateral |  |  | 0 |
Derivative Liability, Fair Value, Gross Liability |  |  | 1,780 |
Derivative Liability, Fair Value, Gross Asset |  |  | 0 |
Derivative Liability, Fair Value, Amount Offset Against Collateral |  |  | 1,780 |
Other assets | Financial Swaps |  |  |  |
Fair Value |  |  |  |
Derivative Asset, Fair Value, Gross Asset | 106 |  | 622 |
Derivative Asset, Fair Value, Gross Liability | (89) |  | (43) |
Derivative Asset, Fair Value, Amount Offset Against Collateral | 17 |  | 579 |
Derivative Liability, Fair Value, Gross Liability | 89 |  | 43 |
Derivative Liability, Fair Value, Gross Asset | (89) |  | (43) |
Derivative Liability, Fair Value, Amount Offset Against Collateral | $ 0 |  | $ 0 |
[1] | Current asset derivative amounts offset include $18.6 million of collateral payable at December 31, 2022.
[2] | Current liability derivative amounts offset include $36.6 million of collateral receivable at December 31, 2023.
[3] | Long-term liability derivative amounts offset include $1.7 million of collateral receivable at December 31, 2023.

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- Definition The aggregate fair value of additional assets that would be required to be posted as collateral for derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4H + Details
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