XML 57 R35.htm IDEA: XBRL DOCUMENT
v3.20.4

Leases (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2020
Lessee Disclosure [Abstract] |
Components of total lease cost [Table Text Block] | The following table reflects the components of the Company’s total costs, whether capitalized or expensed, related to operating leases, including short-term leases, and variable lease payments made for leases with initial lease terms greater than 12 months, for the years ended December 31, 2020, and 2019. This total does not reflect amounts that may be reimbursed by other third parties in the normal course of business, such as non-operating working interest owners.
| For the Years Ended December 31,
| 2020 |  | 2019
| (in thousands)
Operating lease cost | $ | 17,980 |  |  | $ | 35,570 |
Short-term lease cost (1) | 143,892 |  |  | 301,373 |
Variable lease cost (2) | 70,858 |  |  | 106,006 |
Total lease cost | $ | 232,730 |  |  | $ | 442,949 |
____________________________________________ (1) Costs associated with short-term lease agreements relate primarily to operational activities where underlying lease terms are less than one year. This amount includes drilling and completion activities and field equipment rentals, most of which are contracted for 12 months or less. It is expected that this amount will fluctuate primarily with the number of drilling rigs and completion crews the Company is operating under short-term agreements. (2) Variable lease payments include additional payments made that were not included in the initial measurement of the ROU asset and corresponding liability for lease agreements with terms longer than 12 months. Variable lease payments relate to the actual volumes transported under certain midstream agreements, actual usage associated with drilling rigs, completion crews, and vehicles, and variable utility costs associated with the Company’s leased office space. Fluctuations in variable lease payments are driven by actual volumes delivered and the number of drilling rigs and completion crews operating under long-term agreements. ROU assets obtained in exchange for new operating lease liabilities totaled $745,000 and $25.4 million for the twelve months ended December 31, 2020, and 2019, respectively. Cash paid for amounts included in the measurement of lease liabilities for the years ended December 31, 2020, and 2019, were as follows:
| For the Years Ended December 31,
| 2020 |  | 2019
| (in thousands)
Operating cash flows from operating leases | $ | 12,046 |  |  | $ | 12,074 |
Investing cash flows from operating leases | $ | 7,313 |  |  | $ | 24,129 |
Operating lease liability maturities [Table Text Block] | Maturities for the Company’s operating lease liabilities included on the accompanying balance sheets as of December 31, 2020, were as follows:
|  | As of December 31, 2020
|  | (in thousands)
2021 |  | $ | 12,781 |
2022 |  | 5,891 |
2023 |  | 3,591 |
2024 |  | 2,081 |
2025 |  | 1,222 |
Thereafter |  | 417 |
Total Lease payments |  | $ | 25,983 |
Less: Imputed interest (1) |  | (2,426) |
Total |  | $ | 23,557 |
____________________________________________ (1) The weighted-average discount rate used to determine the operating lease liability as of December 31, 2020, was 7.0 percent.
Balance sheet information related to operating leases [Table Text Block] | Amounts recorded on the accompanying balance sheets for operating leases as of December 31, 2020, and 2019, were as follows:
| As of December 31,
| 2020 |  | 2019
| (in thousands)
Other noncurrent assets | $ | 21,701 |  |  | $ | 39,717 |
Other current liabilities | $ | 11,659 |  |  | $ | 19,189 |
Other noncurrent liabilities | $ | 11,898 |  |  | $ | 23,137 |

X
- Definition Balance Sheet Information Related to Operating Leases [Table Text Block] + References No definition available. + Details
Name: | sm_BalanceSheetInformationRelatedtoOperatingLeasesTableTextBlock
Namespace Prefix: | sm_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 + Details
Name: | us-gaap_LeaseCostTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LesseeDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration