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REVENUE RECOGNITION - Additional Information (Details) | 12 Months Ended
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Dec. 31, 2022
Disaggregation of Revenue [Line Items] |
Period of recognition, performance obligations | 30 days
Product Contracts |
Disaggregation of Revenue [Line Items] |
Payment terms | 30 days
Rental Contracts |
Disaggregation of Revenue [Line Items] |
Payment terms | 30 days
Service Contracts |
Disaggregation of Revenue [Line Items] |
Payment terms | 30 days

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- Definition Revenue, Payment Terms + References No definition available. + Details
Name: | slng_RevenuePaymentTerms
Namespace Prefix: | slng_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Revenue, Performance Obligation, Period of Recognition + References No definition available. + Details
Name: | slng_RevenuePerformanceObligationPeriodOfRecognition
Namespace Prefix: | slng_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DisaggregationOfRevenueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_ProductOrServiceAxis=slng_ProductContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_ProductOrServiceAxis=slng_RentalContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_ProductOrServiceAxis=slng_ServiceContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |