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FAIR VALUE MEASUREMENTS (Tables) | 12 Months Ended
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Dec. 31, 2020
Fair Value Disclosures [Abstract] |
Fair Value, Assets and Liabilities Measured on Recurring Basis | Fair value measurements and the fair value hierarchy level for the Company’s assets and liabilities measured at fair value on a recurring basis as of December 31, 2020 are shown below (in thousands):
|  | Frequency |  | Asset / (Liability) |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  | Significant Other Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3)
December 31, 2020 |  |  |  |  |  |  |  |  |  |
Commodity swap contracts |  | Recurring |  | $ | 13,384 |  |  | $ | — |  |  | $ | 13,384 |  |  | $ | — |
Mutual funds |  | Recurring |  | $ | 5,331 |  |  | $ | 5,331 |  |  | $ | — |  |  | $ | — |
Life-insurance contracts |  | Recurring |  | $ | 16,930 |  |  | $ | — |  |  | $ | 16,930 |  |  | $ | — |
December 31, 2019 |  |  |  |  |  |  |  |  |  |
Commodity swap contracts |  | Recurring |  | $ | (1,926) |  |  | $ | — |  |  | $ | (1,926) |  |  | $ | — |
Mutual funds |  | Recurring |  | $ | 7,367 |  |  | $ | 7,367 |  |  | $ | — |  |  | $ | — |
Life-insurance contracts |  | Recurring |  | $ | 15,072 |  |  | $ | — |  |  | $ | 15,072 |  |  | $ | — |
Fair Value, Liabilities Measured on Recurring Basis | The Company’s carrying and estimated fair value of debt at December 31, 2020 and December 31, 2019 were as follows (in thousands):
| December 31, 2020 |  | December 31, 2019
|  |  | Fair Value |  |  |  | Fair Value
| Carrying Value |  | Level 1 |  | Level 2 |  | Level 3 |  | Carrying Value |  | Level 1 |  | Level 2 |  | Level 3
Instrument |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes due 2025 | $ | 311,357 |  |  | $ | — |  |  | $ | 319,140 |  |  | $ | — |  |  | $ | 320,572 |  |  | $ | — |  |  | $ | 320,572 |  |  | $ | — |
New (2020) & Old (2019) Term Loan Credit Agreements | 136,622 |  |  | — |  |  | 136,280 |  |  | — |  |  | 134,814 |  |  | — |  |  | 134,814 |  |  | — |
| $ | 447,979 |  |  | $ | — |  |  | $ | 455,420 |  |  | $ | — |  |  | $ | 455,386 |  |  | $ | — |  |  | $ | 455,386 |  |  | $ | — |

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- Definition Tabular disclosure of liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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