CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net (loss) income	$ (744)	$ 1,333
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	34,883	34,505
Amortization of debt discount and premium	(127)	2,555
Equity-based compensation expense (net of amounts capitalized)	6,240	3,878
Loss on debt extinguishment and redemption	10,144
Gain on capital lease termination	(10,110)
(Gains) losses - equipment transactions and other, net	(1,837)	(4,959)
Deferred income taxes	1,475	772
Changes in operating assets and liabilities:
Accounts receivable, net	1,126	(2,970)
Prepaid expenses and other current assets	(3,124)	(3,678)
Accounts payable, accrued liabilities and other long-term liabilities	689	7,822
Deposits and other assets	(208)	(227)
Net cash provided by operating activities	38,407	39,031
Cash flows from investing activities:
Purchases of property and equipment	(23,782)	(31,608)
Proceeds from dispositions of assets	82	92
Net cash used in investing activities	(23,700)	(31,516)
Cash flows from financing activities:
Dividends paid	(34,973)	(26,234)
Purchases of common stock	(27,225)	(32,084)
Repayment of convertible senior notes		(91,978)
Net proceeds from issuance of senior unsecured notes		195,824
Net proceeds from issuance of senior secured notes	248,599
Redemption of senior secured notes	(251,280)
Proceeds from exercises of stock options	219	301
Principal payments of capital lease obligations	(10,982)	(8,146)
Net cash (used in) provided by financing activities	(75,642)	37,683
Effect of exchange rates changes on cash	(2,361)	(229)
Net (decrease) increase in cash and cash equivalents	(63,296)	44,969
Cash and cash equivalents, beginning of period	287,790	304,866
Cash and cash equivalents, end of period	224,494	349,835
Supplemental disclosure of non-cash financing activities:
Non-cash component of network equipment obtained in exchange transactions	4,594	4,900
PP&E obtained for note payable	5,597
Capital lease obligations incurred	$ 7,683	$ 7,671