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v3.19.3

Revenue Recognition - Additional Information (Details) | 9 Months Ended
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Sep. 30, 2019
Disaggregation of Revenue [Line Items] |
Period of recognition, performance obligations | 30 days
Period of recognition upon receipt of invoice | 30 days
LNG |
Disaggregation of Revenue [Line Items] |
Period of collection on accounts receivable, net | 30 days
Power Delivery |
Disaggregation of Revenue [Line Items] |
Period of collection on accounts receivable, net | 12 months
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 Accounts Receivable, Net of Allowance, Period of Collection + References No definition available. + Details
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Namespace Prefix: | slng_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- 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
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Namespace Prefix: | slng_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Revenue, Receipt of Invoice, Period of Recognition + References No definition available. + Details
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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
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=slng_LNGSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=slng_PowerDeliverySegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- 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: |