Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 57,392	$ 28,306
Accounts receivable, net of allowance for doubtful accounts of $2,101 and $766, respectively	294,828	348,966
Inventories	42,363	32,335
Other current assets	87,782	96,546
Total current assets	482,365	506,153
Property and equipment	2,546,087	2,606,738
Accumulated depreciation	(1,299,543)	(1,241,092)
Property and equipment, net	1,246,544	1,365,646
Goodwill	601,839	624,875
Other intangible assets, net	27,456	41,146
Deferred financing costs, net	11,798	13,897
Other assets	36,644	35,753
TOTAL ASSETS	2,406,646	2,587,470
Current liabilities:
Accounts payable	61,145	58,826
Other current liabilities	156,556	169,945
Current portion of long-term debt	0	3,573
Total current liabilities	217,701	232,344
Long-term debt	758,565	763,981
Workers' compensation, vehicular and health insurance liabilities	30,972	29,944
Deferred tax liabilities	250,843	284,453
Other non-current liabilities	27,009	25,655
Commitments and contingencies
Equity:
Common stock, $0.10 par value; 200,000,000 shares authorized, 153,558,770 and 152,331,006 shares issued and outstanding	15,356	15,233
Additional paid-in capital	958,981	953,306
Accumulated other comprehensive loss	(24,425)	(15,414)
Retained earnings	171,644	297,968
Total equity	1,121,556	1,251,093
TOTAL LIABILITIES AND EQUITY	$ 2,406,646	$ 2,587,470