Amortization Of Other Intangible Assets

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- Definition

Change In Accounting Estimate Increase Decrease In Depreciation Before Tax

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- Definition

Depreciation Expenses

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- Definition

Finite-Lived Intangible Assets, Period Already Amortized

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- Definition

Percentage Of Fair Value Estimate Of Contractor Fees

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- Definition

Amount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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- Definition

Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability.

+ References

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Net Increase or Decrease in the asset retirement obligation during the period.

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- Definition

The amount of asset retirement costs previously incurred and capitalized separately from the capitalized amount of the associated long-lived assets.

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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- Definition

The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method.

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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- Definition

Remaining amortization period of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

The increase (decrease) during the reporting period in intangible assets (for example patents and licenses).

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy.

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Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer).

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- Definition

Cash outflow related to disposal costs of plants, whether by demolishing, dismantling, abandoning, sale, and so forth during the period.

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No definition available.

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Useful life of other equipment owned by public utility, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Long-Lived Assets - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Depreciation, amortization and accretion expense	$ 16,677,000	$ 15,167,000	$ 18,232,000
Change in accounting estimate will reduce depreciation expense	49,000
Reduction in asset retirement cost	(1,166,000)	(131,000)
Goodwill, Impairment Loss	0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss
Asset retirement costs partially offset in fully depreciated asset retirement costs	10,200,000us-gaap_Depreciation	9,664,000us-gaap_Depreciation	11,054,000us-gaap_Depreciation
Other long-term liabilities	8,131,000us-gaap_OtherLiabilitiesNoncurrent	9,259,000us-gaap_OtherLiabilitiesNoncurrent
Percentage of fair value estimate of contractor fees escalation by each year	4.00%
Long term cost associated with estimated removal costs	8,400,000us-gaap_PaymentsForRemovalCosts
Accretion expense on the asset retirement obligation liabilities	755,000us-gaap_AccretionExpense	538,000us-gaap_AccretionExpense	767,000us-gaap_AccretionExpense
Accretion expense on the asset retirement obligation liabilities	755,000	567,000
Impairment charge of intangible assets	0us-gaap_AssetImpairmentCharges	0us-gaap_AssetImpairmentCharges	3,382,000us-gaap_AssetImpairmentCharges
Amortizable intangible assets, accumulated amortization	21,880,000	16,158,000
Goodwill	133,031,000us-gaap_Goodwill	133,031,000us-gaap_Goodwill
Paging and computer equipment [Member]
Finite-Lived Intangible Assets [Line Items]
Depreciation expenses	900,000	1,100,000	1,900,000
Paging Equipment Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Depreciation, amortization and accretion expense	300,000	1,000,000	1,100,000
Capitalized Costs, Asset Retirement Costs	2,800,000	3,800,000
Asset retirement obligation liability [Member]
Finite-Lived Intangible Assets [Line Items]
Accrued other liabilities	300,000	400,000
Costs of deconstructing assets [Member]
Finite-Lived Intangible Assets [Line Items]
Other long-term liabilities	6,800,000	7,600,000
Other intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Accretion expense on the asset retirement obligation liabilities	800,000	600,000	700,000
Amortization expense for other intangible assets	5,700,000	5,000,000	6,400,000
Software Operations [Member]
Finite-Lived Intangible Assets [Line Items]
Period already amortized	3 years
Remaining amortization period	3 years
Minimum [Member] \| Paging Equipment Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Equipment assets estimated useful life	12 months
Minimum [Member] \| Software Operations [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Useful Life	2 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Useful Life	15 years
Maximum [Member] \| Paging Equipment Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Equipment assets estimated useful life	60 months
Maximum [Member] \| Software Operations [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Useful Life	15 years
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Increase (Decrease) in Intangible Assets, Current	52,000
Non-compete agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, accumulated amortization	$ 2,242,000	$ 2,132,000
Non-compete agreements [Member] \| Wireless Operations [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Useful Life	3 years
Non-compete agreements [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Useful Life	3 years
Non-compete agreements [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, Useful Life	5 years