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Condensed Consolidating Balance Sheet (Unaudited) (Detail) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017 | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | --- | --- | ---
ASSETS |  |  |  |
Cash and cash equivalents | $ 71,368 | $ 52,183 |  |
Restricted cash | 5,163 |  |  |
Accounts receivable, net of allowance | 217,857 | 254,188 |  |
Prepaid expenses and other current assets | 32,401 | 21,119 |  |
Assets held for sale | 12,600 |  |  |
Total current assets | 339,389 | 327,490 |  |
Property and equipment, net | 2,802,146 | 2,802,449 |  |
Goodwill | 43,996 | 40,927 |  |
Non-current deferred tax assets | 11,531 | 12,814 |  |
Other assets | 95,715 | 88,718 |  |
Total assets | 3,292,777 | 3,272,398 |  |
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |  |
Accounts payable and accrued expenses | 277,928 | 277,804 |  |
Income taxes payable | 200 | 3,034 |  |
Current portion of long-term debt | 6,193 | 10,000 |  |
Total current liabilities | 284,321 | 290,838 |  |
Long-term debt, net | 1,487,781 | 1,437,187 |  |
Deferred revenue | 32,918 | 39,735 |  |
Other liabilities | 59,839 | 53,030 |  |
Total liabilities | 1,864,859 | 1,820,790 |  |
Total stockholders' equity | 1,427,918 | 1,451,608 | $ 1,463,344 | $ 1,458,963
Total liabilities and stockholders' equity | 3,292,777 | 3,272,398 |  |
Reportable Legal Entities | Parent |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 41,992 | 25,745 |  |
Accounts receivable, net of allowance | 151,045 | 211,673 |  |
Prepaid expenses and other current assets | 2,824 | 1,835 |  |
Assets held for sale | 12,600 |  |  |
Total current assets | 208,461 | 239,253 |  |
Property and equipment, net | 2,470,999 | 2,467,166 |  |
Goodwill | 33,057 | 26,031 |  |
Other assets | 488,835 | 421,474 |  |
Total assets | 3,201,352 | 3,153,924 |  |
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |  |
Accounts payable and accrued expenses | 275,166 | 251,011 |  |
Income taxes payable | 21 | 1,443 |  |
Current portion of long-term debt | 6,193 | 10,000 |  |
Total current liabilities | 281,380 | 262,454 |  |
Long-term debt, net | 1,476,808 | 1,437,982 |  |
Non-current deferred tax liabilities | 479 | 379 |  |
Other liabilities | 14,767 | 1,501 |  |
Total liabilities | 1,773,434 | 1,702,316 |  |
Total stockholders' equity | 1,427,918 | 1,451,608 |  |
Total liabilities and stockholders' equity | 3,201,352 | 3,153,924 |  |
Reportable Legal Entities | Combined Subsidiary Guarantors |  |  |  |
ASSETS |  |  |  |
Cash and cash equivalents | 29,376 | 26,438 |  |
Accounts receivable, net of allowance | 418,744 | 372,755 |  |
Prepaid expenses and other current assets | 35,308 | 24,986 |  |
Total current assets | 483,428 | 424,179 |  |
Property and equipment, net | 324,477 | 335,283 |  |
Goodwill | 10,939 | 14,896 |  |
Non-current deferred tax assets | 12,010 | 13,193 |  |
Other assets | 52,397 | 69,117 |  |
Total assets | 883,251 | 856,668 |  |
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |  |
Accounts payable and accrued expenses | 360,213 | 362,701 |  |
Income taxes payable | 179 | 1,591 |  |
Total current liabilities | 360,392 | 364,292 |  |
Long-term debt, net | 114,317 | 114,205 |  |
Deferred revenue | 32,918 | 39,735 |  |
Other liabilities | 45,072 | 51,529 |  |
Total liabilities | 552,699 | 569,761 |  |
Total stockholders' equity | 330,552 | 286,907 |  |
Total liabilities and stockholders' equity | 883,251 | 856,668 |  |
Reportable Legal Entities | Non-Guarantor Subsidiaries |  |  |  |
ASSETS |  |  |  |
Restricted cash | 5,163 |  |  |
Accounts receivable, net of allowance | (1) |  |  |
Prepaid expenses and other current assets | 14 |  |  |
Total current assets | 5,176 |  |  |
Property and equipment, net | 6,670 |  |  |
Total assets | 11,846 |  |  |
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |  |
Accounts payable and accrued expenses | 190 |  |  |
Total current liabilities | 190 |  |  |
Long-term debt, net | 11,656 |  |  |
Total liabilities | 11,846 |  |  |
Total liabilities and stockholders' equity | 11,846 |  |  |
Consolidating Adjustments and Other |  |  |  |
ASSETS |  |  |  |
Accounts receivable, net of allowance | (351,931) | (330,240) |  |
Prepaid expenses and other current assets | (5,745) | (5,702) |  |
Total current assets | (357,676) | (335,942) |  |
Non-current deferred tax assets | (479) | (379) |  |
Other assets | (445,517) | (401,873) |  |
Total assets | (803,672) | (738,194) |  |
LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |  |
Accounts payable and accrued expenses | (357,641) | (335,908) |  |
Total current liabilities | (357,641) | (335,908) |  |
Long-term debt, net | (115,000) | (115,000) |  |
Non-current deferred tax liabilities | (479) | (379) |  |
Total liabilities | (473,120) | (451,287) |  |
Total stockholders' equity | (330,552) | (286,907) |  |
Total liabilities and stockholders' equity | $ (803,672) | $ (738,194) |  |

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