CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net income	$ 349,205	$ 53,167	$ 21,897
Adjustments to reconcile net income to net cash flows provided by operating activities:
Depreciation and amortization	48,737	50,587	51,250
Provision for doubtful accounts	1,163	1,494	4,407
Amortization and write off of debt discount and debt issuance costs	6,681	2,388	1,962
Stock-based compensation	4,454	3,323	2,737
Loss on interest rate derivative contracts	5,408
Deferred income taxes	(4,849)	2,502	14,748
Income from discontinued operations	(5,166)	(29,202)	(10,222)
Gain on disposition of long-lived assets	(1,076)	(11,605)	(2,397)
Impairment of intangibles		3,350	2,425
Gain on sale of discontinued operations	(307,102)
Changes in operating assets and liabilities, excluding the effects of acquisitions:
Accounts receivable, net	2,233	(1,951)	(10,390)
Materials and supplies, prepayments, and other current assets	(17,117)	(700)	3,219
Income tax receivable	14,251	11,545	(1,922)
Accounts payable and accrued liabilities, advance payments and deposits and other current liabilities	10,472	(4,404)	(12,163)
Accrued taxes	(242,696)	26,416	3,758
Other	4,006	7,974	1,926
Net cash provided by (used in) operating activities of continuing operations	(131,396)	114,884	71,235
Net cash provided by operating activities of discontinued operations	19,394	72,587	61,368
Net cash provided by operating activities	(112,002)	187,471	132,603
Cash flows from investing activities:
Capital expenditures	(69,316)	(42,154)	(41,331)
Cash acquired in business combinations			4,087
Proceeds from disposition of long-lived assets	1,500	15,163	1,200
Decrease in restricted cash			467
Net cash used in investing activities of continuing operations	(67,816)	(26,991)	(35,577)
Net cash provided by (used in) investing activities of discontinued operations, net	710,934	(35,267)	(60,070)
Net cash provided by (used in) investing activities	643,118	(62,258)	(95,647)
Cash flows from financing activities:
Dividends paid on common stock	(12,096)	(18,491)	(13,703)
Distribution to minority stockholders	(26,155)	(2,458)	(2,018)
Payment of debt issuance costs	(12)	(3,564)	(1,037)
Proceeds from stock option exercises	2,669	1,452	1,175
Principal repayments of term loan	(272,137)	(260,793)	(13,450)
Principal repayments of revolver loan		(74,534)	(132,911)
Purchase of common stock	(1,473)	(344)	(218)
Investments made by minority shareholders in consolidated affiliates	408	1,061	784
Proceeds from borrowings under term loan		275,000
Proceeds from borrowings under revolver loan		46,378	137,069
Repurchase of non-controlling interests		(77)	(446)
Net cash used in financing activities of continuing operations	(308,796)	(36,370)	(24,755)
Net cash used in financing activities of discontinued operations, net	(1,678)	(931)	(796)
Net cash used in financing activities	(310,474)	(37,301)	(25,551)
Effect of foreign currency exchange rates on cash and cash equivalents	(682)
Net change in cash and cash equivalents	219,960	87,912	11,405
Cash and cash equivalents, beginning of year	136,647	48,735	37,330
Cash and cash equivalents, end of year	356,607	136,647	48,735
Supplemental cash flow information:
Interest paid	4,857	14,388	18,173
Taxes paid, net	256,819	8,841	3,902
Dividends declared, not paid	$ 4,285	$ 3,548	$ 154