CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 73,461	$ 109,015
Restricted cash	50	30,398
Accounts receivable, net of allowance for doubtful accounts of $12,345 and $11,228 as of September 30, 2013 and December 31, 2012, respectively	200,352	209,870
Notes receivable	0	10,298
Inventories	79,256	71,255
Deferred income taxes, current portion	6,396	6,800
Prepaid expenses, deposits and other current assets	45,626	46,982
Total current assets	405,141	484,618
Property and equipment, at cost	875,581	848,622
Less: accumulated depreciation	(500,512)	(471,745)
Net property and equipment	375,069	376,877
Goodwill	800,372	801,373
Intangible assets, net	92,110	84,291
Equity investments	353,683	316,234
Other assets	129,853	123,515
Total assets	2,156,228	2,186,908
Current liabilities:
Debt payments due within one year	11,085	16,458
Accounts payable	61,700	80,872
Accrued liabilities	147,789	159,017
Total current liabilities	220,574	256,347
Deferred income taxes	65,100	62,265
Other long-term liabilities	67,864	51,797
Long-term debt, excluding current installments	1,448,051	1,451,708
Total liabilities	1,801,589	1,822,117
Commitments and contingencies
Stockholders' equity:
Class A common stock, par value $0.01 per share, 199,300 shares authorized, 100,320 and 99,301 shares issued and 85,188 and 84,395 shares outstanding as of September 30, 2013 and December 31, 2012, respectively	1,003	993
Additional paid-in capital	732,343	715,910
Accumulated loss	(232,797)	(206,218)
Treasury stock, at cost, 15,132 and 14,906 shares held as of September 30, 2013 and December 31, 2012, respectively	(144,882)	(142,917)
Accumulated other comprehensive loss	(1,028)	(2,977)
Total stockholders' equity	354,639	364,791
Total liabilities and stockholders' equity	$ 2,156,228	$ 2,186,908