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Note 4 - Fair Value - Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
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Assets: |  |  |
Non-qualified benefit plan assets (a) | [1] | $ 9,482 | $ 8,874
Interest Rate Derivative Assets, at Fair Value | [2] | 7,220 | 7,039
Total Assets |  | 16,702 | 15,913
Liabilities: |  |  |
Long-term debt (c) | [3] | 202,169 | 207,737
Total Liabilities |  | $ 202,169 | $ 207,737
[1] | Included in Non-qualified benefit plan assets is the cash surrender value of insurance policies on various individuals that are associated with the Company. The carrying amount of these insurance policies approximates their fair value and is considered Level 2 inputs.
[2] | Valuation models are calibrated to initial trade price. Subsequent valuations are based on observable inputs to the valuation model (e.g. interest rates and credit spreads). Model inputs are changed only when corroborated by market data. A credit risk adjustment is made on each swap using observable market credit spreads. Thus, inputs used to determine fair value of the interest rate swap are Level 2 inputs. Interest rate swaps of $4,702 and $2,518 at June 30, 2023 are included in Prepaid and other current assets and Other long-term assets, respectively. Interest rate swaps of $4,120 and $2,919 at December 31, 2022 are included in Prepaid and other current assets and Other long-term assets, respectively.
[3] | The fair value of the Company’s long-term debt, including current maturities, is based on rates for instruments with comparable maturities and credit quality (Level 2 inputs), and approximates its carrying value. Prior to the Company’s most recent debt refinancing, the fair value of the Company’s long-term debt, including current maturities, was estimated using discounted cash flows based on the Company’s current incremental borrowing rates for similar types of borrowing arrangements, which was a Level 2 input. See Note 9 to the Unaudited Condensed Consolidated Financial Statements for additional information. Long-term debt is recorded at carrying amount, net of discount and deferred debt issuance costs, as disclosed on the face of the balance sheet. ?

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets. + References No definition available. + Details
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- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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