XML 67 R68.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Construction Contracts - Additional Information (Detail) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2013 | Dec. 31, 2012
Construction Contracts [Line Items] |  |
Billings and estimated contract loss in excess of costs incurred | $ 5,798,000 | $ 15,546,000
Costs in excess of billings | 6,735,000 | 11,229,000
Century Plant |  |
Construction Contracts [Line Items] |  |
Construction agreement description | The Company constructed the Century Plant for a contract price of $796.3 million, which included agreed upon change orders and scope revisions, that Occidental paid to the Company through periodic cost reimbursements based upon the percentage of the project completed. Upon substantial completion of construction in late 2012, Occidental took ownership and began operating the plant for the purpose of separating and removing CO2 from the delivered natural gas stream. |
Construction contract price |  | 796,300,000
Loss identified based on costs incurred in excess of contract amounts, total |  | 180,000,000
Billings and estimated contract loss in excess of costs incurred | 5,798,000 | 15,546,000
Treating agreement contract term | 30 years |
Transmission Expansion Projects |  |
Construction Contracts [Line Items] |  |
Construction agreement description | The Company is managing the design, engineering and construction of a series of transmission expansion and upgrade projects in northern Oklahoma. Under the terms of the agreement, the Company will be reimbursed for costs incurred on these projects up to approximately $23.3 million, plus any subsequently agreed-upon revisions. Construction on these projects began in 2012 with the final project expected to be completed in the second quarter of 2013. |
Expected construction completion year | 2013 |
Costs in excess of billings | 6,735,000 | 11,229,000
Transmission Expansion Projects | Maximum |  |
Construction Contracts [Line Items] |  |
Construction contract price | $ 23,300,000 |

X
- Definition Liabilities due to billings and provisions for contract losses on long term contracts that exceed the income recorded under the percentage of completion contract accounting method, or that exceed the accumulated costs under the completed contract accounting method. + References No definition available. + Details
Name: | sd_BillingsAndEstimatedContractLossInExcessOfCostsIncurred
Namespace Prefix: | sd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Description of construction agreement. + References No definition available. + Details
Name: | sd_ConstructionAgreementDescription
Namespace Prefix: | sd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | sd_ConstructionContractsLineItems
Namespace Prefix: | sd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contract price per construction agreement. + References No definition available. + Details
Name: | sd_ContractPricePerAgreement
Namespace Prefix: | sd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Cumulative loss on contracts + References No definition available. + Details
Name: | sd_CumulativeLossOnContracts
Namespace Prefix: | sd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Expected Construction Completion, Year + References No definition available. + Details
Name: | sd_ExpectedConstructionCompletionYear
Namespace Prefix: | sd_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

X
- Definition Treating Agreement Contract Term + References No definition available. + Details
Name: | sd_TreatingAgreementContractTerm
Namespace Prefix: | sd_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount included in cost of uncompleted contracts in excess of related billings, or unbilled accounts receivable, which is expected to be collected within a year within one year (or one operating cycle, if longer) from the date of the balance sheet. + 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 210.5-02.3(c)(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Subparagraph c(3) -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 35 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6802688&loc=d3e57807-111642 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 35 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6802688&loc=d3e57795-111642 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 45 -Paragraph 12 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant