CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net income (loss)	$ 361	$ (2,090)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	15,874	15,239
Amortization of debt discount-convertible notes	1,580	1,464
Equity-based compensation expense (net of amounts capitalized)	2,514	1,238
Gains-dispositions of assets and other, net	135	(186)
Changes in assets and liabilities:
Accounts receivable	(3,175)	426
Prepaid expenses and other current assets	(2,724)	(1,288)
Deferred income taxes	59	(10)
Deposits and other assets	24	(898)
Accounts payable, accrued liabilities and other long-term liabilities	314	(1,209)
Net cash provided by operating activities	14,962	12,686
Cash flows from investing activities:
Purchases of property and equipment	(16,316)	(12,289)
Proceeds from dispositions of assets	2	111
Net cash used in investing activities	(16,314)	(12,178)
Cash flows from financing activities:
Dividends paid	(5,489)
Proceeds from exercises of stock options	215	94
Principal payments of capital lease obligations	(4,964)	(7,056)
Net cash used in financing activities	(10,238)	(6,962)
Effect of exchange rates changes on cash	(735)	541
Net decrease in cash and cash equivalents	(12,325)	(5,913)
Cash and cash equivalents, beginning of period	247,285	238,207
Cash and cash equivalents, end of period	234,960	232,294
Supplemental disclosure of non-cash financing activities:
Capital lease obligations incurred	$ 18,842	$ 2,312