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DERIVATIVE INSTRUMENTS: (Tables) | 6 Months Ended
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Jun. 30, 2022
DERIVATIVE INSTRUMENTS: |
Schedule of derivative instruments | Derivative instruments and its effects as of March 31, 2022, were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​
Derivatives designated as hedging instruments under ASC 815 | ​ | Call Option | ​ | Financial Swap Cash Settlement | ​
Commodity contracts | ​ | Natural gas | ​ | Natural gas | ​
Gas volume (MMBTUs) | ​ | 5,285,000 | ​ | 5,285,000 | ​
Hedge premium ($per MMBTU) | ​ | 0.55 | ​ | - | ​
Reference price (swap: $per MMBTU)) | ​ | Prior month average IFREC price | ​ | 3.75 | ​
Hedge | ​ | Daily fluctuation range | ​ | Monthly average price | ​
​ | ​ | 1Q 2022 | November 2021 - March 2022 | ​ | 1Q 2022 | November 2021 - March 2022 | ​
Cost (million $) | ​ | (1.7) | (2.9) | ​ | - | - | ​
Profit (million $) | ​ | 0.5 | 0.5 | ​ | 1.7 | 4.7 | ​
Net favorable/unfavorable effect (million $) | ​ | (1.2) | (2.4) | ​ | 1.7 | 4.7 | ​
​ | ​ | 1Q 2022 | ​ | November 2021 - March 2022 | ​
Combined profit (million $) | ​ | 0.5 | ​ | 2.3 | ​

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- Definition Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624163-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=125515794&loc=d3e41620-113959 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=125515794&loc=d3e41638-113959 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=125515794&loc=d3e41678-113959 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=125515794&loc=d3e41641-113959 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959 Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579240-113959 + Details
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