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Fair Value Disclosures (Tables) | 12 Months Ended
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Dec. 31, 2020
Fair Value Disclosures [Abstract] |
Schedule Of Assets And Liabilities Fair Value |
| Fair Value Measurements at December 31, 2020
| Quoted Prices in ‎Active Markets for ‎Identical Assets |  | Significant Other ‎Observable Inputs |  |  |
| (Level 1) |  | (Level 2) |  | Total
Assets: |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 233,860 |  | $ | - |  | $ | 233,860
Restricted cash |  | 40,950 |  |  | - |  |  | 40,950
Inventories carried at market |  | - |  |  | 77,900 |  |  | 77,900
Unrealized gains on derivatives |  | - |  |  | 21,956 |  |  | 21,956
Other assets |  | 112 |  |  | 29 |  |  | 141
Total assets measured at fair value | $ | 274,922 |  | $ | 99,885 |  | $ | 374,807
Liabilities: |  |  |  |  |  |  |  |
Accounts payable (1) | $ | - |  | $ | 19,355 |  | $ | 19,355
Unrealized losses on derivatives |  | - |  |  | 10,997 |  |  | 10,997
Total liabilities measured at fair value | $ | - |  | $ | 30,352 |  | $ | 30,352
| Fair Value Measurements at December 31, 2019
| Quoted Prices in ‎Active Markets for ‎Identical Assets |  | Significant Other ‎Observable Inputs |  |  |
| (Level 1) |  | (Level 2) |  | Total
Assets: |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 245,977 |  | $ | - |  | $ | 245,977
Restricted cash |  | 23,919 |  |  | - |  |  | 23,919
Inventories carried at market |  | - |  |  | 73,318 |  |  | 73,318
Unrealized gains on derivatives |  | - |  |  | 14,515 |  |  | 14,515
Other assets |  | 113 |  |  | - |  |  | 113
Total assets measured at fair value | $ | 270,009 |  | $ | 87,833 |  | $ | 357,842
Liabilities: |  |  |  |  |  |  |  |
Accounts payable (1) | $ | - |  | $ | 37,294 |  | $ | 37,294
Unrealized losses on derivatives |  | - |  |  | 7,771 |  |  | 7,771
Total liabilities measured at fair value | $ | - |  | $ | 45,065 |  | $ | 45,065
(1)Accounts payable is generally stated at historical amounts with the exception of $19.4.million and $37.3 million at December 31, 2020 and 2019, respectively, related to certain delivered inventory for which the payable fluctuates based on changes in commodity prices. These payables are hybrid financial instruments for which the company has elected the fair value option.

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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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