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Revenue Recognition - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Disaggregation of Revenue [Line Items]
Period of recognition, performance obligations			30 days
Period of recognition upon receipt of invoice			30 days
Amount recognized into revenue	$ 200	$ 3	$ (311)	$ 300
Product Contracts
Disaggregation of Revenue [Line Items]
Payment terms			30 days
Rental Contracts
Disaggregation of Revenue [Line Items]
Payment terms			30 days

X

- Definition

Revenue, Payment Terms

+ 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, 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

X

- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130549-203045

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- 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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Period Type:	duration

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Period Type: