Asset impairment and other (gains) charges (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Unusual or Infrequent Items, or Both [Abstract]
Property and equipment (gains) impairments	$ (5,989)	$ 2,183	$ 6,085
Lease exit and other charges	551	1,350	4,558
Hurricane related losses, net	1,137	896	0
Reimbursement from spectrum repacking	(7,400)	0	0
Goodwill and intangible asset impairments	0	0	21,487
Total asset impairment and other (gains) charges	$ (11,701)	$ 4,429	$ 32,130

Asset Impairment Charges, Other Restructuring Related (Gains) Losses, Operating

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- Definition

(Gain) Loss On Reimbursement Of Property, Plant And Equipment

+ References

No definition available.

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- References

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- Definition

Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
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- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Section 45
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- Definition

Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

+ References

No definition available.

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- Definition

Amount of (gain) loss for an event or transaction that is unusual in nature or occurs infrequently, or both.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
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