CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net (loss) income	$ (1,585)	$ 125
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	17,513	17,204
Amortization of debt discount and premium	(164)	1,415
Equity-based compensation expense (net of amounts capitalized)	3,141us-gaap_ShareBasedCompensation	2,006us-gaap_ShareBasedCompensation
Loss on debt extinguishment and redemption	10,144
Gain on capital lease termination	(10,110)us-gaap_GainLossOnContractTermination
(Gains) losses-equipment transactions and other, net	(1,022)us-gaap_GainLossOnDispositionOfAssets	(2,258)us-gaap_GainLossOnDispositionOfAssets
Deferred income taxes	822us-gaap_DeferredIncomeTaxExpenseBenefit	1,229us-gaap_DeferredIncomeTaxExpenseBenefit
Changes in operating assets and liabilities:
Accounts receivable	2,123	(2,554)
Prepaid expenses and other current assets	(4,550)	(5,143)
Accounts payable, accrued liabilities and other long-term liabilities	2,088	(1,466)
Deposits and other assets	(28)	78
Net cash provided by operating activities	18,372	10,636
Cash flows from investing activities:
Purchases of property and equipment	(12,916)	(15,623)
Proceeds from dispositions of assets		27
Net cash used in investing activities	(12,916)	(15,596)
Cash flows from financing activities:
Dividends paid	(16,001)us-gaap_PaymentsOfDividends	(18,352)us-gaap_PaymentsOfDividends
Purchases of common stock	(8,119)	(14,196)
Net proceeds from issuance of senior secured notes	248,659
Redemption of senior secured notes	(251,280)us-gaap_RepaymentsOfSecuredDebt
Proceeds from exercises of stock options	130	155
Principal payments of capital lease obligations	(3,650)	(3,379)
Net cash used in financing activities	(30,261)	(35,772)
Effect of exchange rate changes on cash	(2,935)	(387)
Net increase in cash and cash equivalents	(27,740)	(41,119)
Cash and cash equivalents, beginning of period	287,790	304,866
Cash and cash equivalents, end of period	260,050	263,747
Supplemental disclosure of non-cash financing activities:
Non-cash component of network equipment obtained in exchange transactions	3,956	2,235
PP&E obtained for note payable	1,704us-gaap_FairValueOfAssetsAcquired
Capital lease obligations incurred	$ 4,217us-gaap_CapitalLeaseObligationsIncurred	$ 4,224us-gaap_CapitalLeaseObligationsIncurred

Represents the gain (loss) resulted from asset exchange transactions.

No definition available.

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This element represents the increase decrease in the carrying value of amounts transferred to third parties for security purposes, that are expected to be returned or applied towards payment in the future, which also includes other assets and restricted assets.

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No definition available.

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Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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The increase during the period in capital lease obligations due to entering into new capital leases.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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The effect of exchange rate changes on cash balances in continuing operations held in foreign currencies.

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The fair value of assets acquired in noncash investing or financing activities.

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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.

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

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.

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The increase (decrease) during the reporting period in the aggregate amount of liabilities that result from activities that generate operating income.

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The increase (decrease) during the reporting period in the value of prepaid expenses and other assets not separately disclosed in the statement of cash flows, for example, deferred expenses, intangible assets, or income taxes.

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The increase (decrease) in cash associated with the entity's continuing operating, investing, and financing activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label.

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No definition available.

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Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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The cash outflow to reacquire common stock during the period.

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Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Excludes proceeds from tax exempt secured debt.

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The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets.

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer).

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The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	duration

- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

+ Details

Name:	us-gaap_ShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration