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Leases - Lease Income and Cost (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Leases [Abstract]
Sublease income from operating leases	$ 2,028
Operating lease expense	16,908
Amortization of lease assets	118
Interest on lease liabilities	22
Subtotal finance lease cost	140
Net lease expense	$ 16,768

X

- Definition

Finance Lease, Cost

+ References

No definition available.

+ Details

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Namespace Prefix:	shen_
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Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of interest expense on finance lease liability.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
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- Definition

Amount of amortization expense attributable to right-of-use asset from finance lease.

+ References

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X

- Definition

Amount of lease cost recognized by lessee for lease contract.

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- References

No definition available.

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- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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X

- Definition

Amount of sublease income excluding finance and operating lease expense.

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