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Inventories (Schedule Of Major Components Of Inventories) (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2016
Inventory Disclosure [Abstract] |  |
Petroleum products | $ 14,235,000 | $ 11,550,000
Crude oil | 22,815,000 | 73,133,000
Caustic soda | 3,964,000 | 4,593,000
NaHS | 2,755,000 | 9,304,000
Other | 6,000 | 7,000
Total | 43,775,000 | 98,587,000
Inventory write-down | $ 900,000 | $ 0

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- Definition Carrying amount of sodium hydrosulfide (NaHS) as of the balance sheet date. + References No definition available. + Details
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- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=68049868&loc=d3e3927-108312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 + Details
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