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Government Grants (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Government Assistance [Abstract]
Increase (decrease) in grants receivable	$ 2,800
Government grants received	39,884	$ 11,094
Grants receivable	$ 6,100		$ 300

X

- Definition

Increase (Decrease) in Grants Receivable

+ References

No definition available.

+ Details

Name:	shen_IncreaseDecreaseInGrantsReceivable
Namespace Prefix:	shen_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Proceeds From Government Grants Received

+ References

No definition available.

+ Details

Name:	shen_ProceedsFromGovernmentGrantsReceived
Namespace Prefix:	shen_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_GovernmentAssistanceAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Carrying amount as of the balance sheet date of amounts due under the terms of governmental, corporate, or foundation grants.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3)(a)(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_GrantsReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant