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Condensed Consolidating Financial Information (Cash Flows) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Cash flows from operating activities |  |  |  |
Net cash from operating activities | $ 422,551 | $ 300,339 | $ 326,674 |
Cash flows from investing activities |  |  |  |
Capital expenditures | (190,464) | (160,358) | (131,170) |
Net Investing Activity with Affiliates | 0 |  | 0 |
Proceeds from Equity Method Investment, Distribution | 0 | 0 | 0 |
Proceeds (Payments) from Investments in Development Agreement | (35,108) | 0 | 0 |
Payments to (Proceeds from) Combined Other Investing Activities | 706 |  |  |
Cash paid for acquisitions, net of cash received | (1,153) | (592,703) | 0 |
Other investing activities | 706 | 14,207 | 4,528 |
Net cash used in investing activities | (226,019) | (738,854) | (126,642) |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 958,000 | 2,276,175 | 1,379,000 |
Payments under bank credit facility | (1,119,485) | (2,366,112) | (1,636,350) |
Debt financing costs, net | (3,430) | (42,220) | (14,004) |
Premium and Consent Fees Paid | 0 | 15,750 | 24,246 |
Net Financing Activity with Affiliates | 0 | (1,295) | 3,689 |
Cash Dividends Paid to Parent Company by Unconsolidated Subsidiaries | 0 | 0 |  |
Share-based compensation activities, net | (7,711) | (1,295) | 3,689 |
Stock Repurchased During Period, Value | (31,927) |  |  |
Payments of Ordinary Dividends, Common Stock | (11,286) | 0 | 0 |
Proceeds from (Payments for) Other Financing Activities | (503) | 45 | 0 |
Net cash provided by (used in) financing activities | (215,336) | (99,247) | (199,724) |
Proceeds from Issuance of Senior Long-term Debt | 0 | (750,000) | (750,000) |
Payments on Retirements of Long-term Debt | 0 | (700,000) | (657,813) |
Cash flows from operating activities | (514) | (27,796) | 14,095 |
Cash flows from investing activities | 36,247 | 598,057 | 0 |
Cash flows from financing activities | 0 | 0 | 0 |
Net cash provided by discontinued operations | 35,733 | 570,261 | 14,095 |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect | 16,929 | 32,499 | 14,403 |
Proceeds from Issuance of Long-term Debt |  | 0 | 0 |
Proceeds from Contributions from Parent |  |  | 0 |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | 227,279 | 210,350 | 177,851 | $ 163,448
Parent Company [Member] |  |  |  |
Cash flows from operating activities |  |  |  |
Net cash from operating activities | (82,632) | (86,502) | 102,080 |
Cash flows from investing activities |  |  |  |
Capital expenditures | (102,277) | 42,840 | (48,591) |
Net Investing Activity with Affiliates | 0 | 0 | 0 |
Proceeds from Equity Method Investment, Distribution | 10,867 | 9,150 | 11,200 |
Proceeds (Payments) from Investments in Development Agreement | 0 |  |  |
Payments to (Proceeds from) Combined Other Investing Activities | 0 |  |  |
Cash paid for acquisitions, net of cash received | (1,153) | 592,703 |  |
Other investing activities |  | 0 | 3,292 |
Net cash used in investing activities | (92,563) | (626,393) | (34,099) |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 958,000 | 2,039,175 | 1,033,500 |
Payments under bank credit facility | (1,119,485) | 1,466,362 | (1,211,200) |
Debt financing costs, net | (3,430) | 42,220 | (14,004) |
Premium and Consent Fees Paid |  | 15,750 | 24,246 |
Net Financing Activity with Affiliates | 389,579 | (1,295) | 3,689 |
Cash Dividends Paid to Parent Company by Unconsolidated Subsidiaries | 0 | 0 |  |
Share-based compensation activities, net | (7,711) |  |  |
Stock Repurchased During Period, Value | (31,927) |  |  |
Payments of Ordinary Dividends, Common Stock | (11,286) |  |  |
Proceeds from (Payments for) Other Financing Activities | (590) | 45 |  |
Net cash provided by (used in) financing activities | 174,330 | 714,105 | (67,981) |
Proceeds from Issuance of Senior Long-term Debt |  | (750,000) | (750,000) |
Payments on Retirements of Long-term Debt |  | 350,000 | (500,000) |
Cash flows from operating activities | 0 | 0 | 0 |
Cash flows from investing activities | 0 | 0 | 0 |
Cash flows from financing activities | 0 | 0 | 0 |
Net cash provided by discontinued operations | 0 | 0 | 0 |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect | (865) | 1,210 | 0 |
Proceeds from Issuance of Long-term Debt |  | (199,398) | (105,720) |
Proceeds from Contributions from Parent |  |  | 0 |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | 347 | 1,212 | 2 | 2
Guarantor Subsidiaries |  |  |  |
Cash flows from operating activities |  |  |  |
Net cash from operating activities | 532,515 | 502,815 | 249,822 |
Cash flows from investing activities |  |  |  |
Capital expenditures | (87,590) | (116,834) | (82,392) |
Net Investing Activity with Affiliates | (420,716) | 659,549 | (65,408) |
Proceeds from Equity Method Investment, Distribution | 0 | 0 | 0 |
Proceeds (Payments) from Investments in Development Agreement | 0 |  |  |
Payments to (Proceeds from) Combined Other Investing Activities | 706 |  |  |
Cash paid for acquisitions, net of cash received | 0 | 0 |  |
Other investing activities |  | 7,529 | 1,236 |
Net cash used in investing activities | (507,600) | 550,244 | (146,564) |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 0 | 237,000 | 345,500 |
Payments under bank credit facility | 0 | (899,750) | (425,150) |
Debt financing costs, net | 0 | 0 | 0 |
Premium and Consent Fees Paid |  | 0 | 0 |
Net Financing Activity with Affiliates | 0 | 0 | 0 |
Cash Dividends Paid to Parent Company by Unconsolidated Subsidiaries | 10,475 | 9,000 |  |
Share-based compensation activities, net | 0 |  |  |
Stock Repurchased During Period, Value | 0 |  |  |
Payments of Ordinary Dividends, Common Stock | 0 |  |  |
Proceeds from (Payments for) Other Financing Activities | 87 | 0 |  |
Net cash provided by (used in) financing activities | (10,562) | (1,021,750) | (90,753) |
Proceeds from Issuance of Senior Long-term Debt |  | 0 | 0 |
Payments on Retirements of Long-term Debt |  | (350,000) | (3) |
Cash flows from operating activities | 0 | 0 | 0 |
Cash flows from investing activities | 0 | 0 | 0 |
Cash flows from financing activities | 0 | 0 | 0 |
Net cash provided by discontinued operations | 0 | 0 | 0 |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect | 14,353 | 31,309 | 12,505 |
Proceeds from Issuance of Long-term Debt |  | 0 | 0 |
Proceeds from Contributions from Parent |  |  | (11,100) |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | 213,963 | 199,610 | 168,301 | 155,796
Non-Guarantor Subsidiaries (100% Owned) |  |  |  |
Cash flows from operating activities |  |  |  |
Net cash from operating activities | (15,628) | 7,234 | (12,131) |
Cash flows from investing activities |  |  |  |
Capital expenditures | (597) | (684) | (187) |
Net Investing Activity with Affiliates | 0 | 0 | 0 |
Proceeds from Equity Method Investment, Distribution | 0 | 0 | 0 |
Proceeds (Payments) from Investments in Development Agreement | (35,108) |  |  |
Payments to (Proceeds from) Combined Other Investing Activities | 0 |  |  |
Cash paid for acquisitions, net of cash received | 0 | 0 |  |
Other investing activities |  | 6,678 | 0 |
Net cash used in investing activities | (35,705) | 5,994 | (187) |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 0 | 0 | 0 |
Payments under bank credit facility | 0 | 0 | 0 |
Debt financing costs, net | 0 | 0 | 0 |
Premium and Consent Fees Paid |  | 0 | 0 |
Net Financing Activity with Affiliates | 55,166 | 0 | 0 |
Cash Dividends Paid to Parent Company by Unconsolidated Subsidiaries | 392 | 150 |  |
Share-based compensation activities, net | 0 |  |  |
Stock Repurchased During Period, Value | 0 |  |  |
Payments of Ordinary Dividends, Common Stock | 0 |  |  |
Proceeds from (Payments for) Other Financing Activities | 0 | 0 |  |
Net cash provided by (used in) financing activities | 54,774 | (13,027) | 14,214 |
Proceeds from Issuance of Senior Long-term Debt |  | 0 | 0 |
Payments on Retirements of Long-term Debt |  | 0 | (157,810) |
Cash flows from operating activities | 0 | 0 | 0 |
Cash flows from investing activities | 0 | 0 | 0 |
Cash flows from financing activities | 0 | 0 | 0 |
Net cash provided by discontinued operations | 0 | 0 | 0 |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect | 3,441 | 201 | 1,896 |
Proceeds from Issuance of Long-term Debt |  | (12,877) | 172,124 |
Proceeds from Contributions from Parent |  |  | (100) |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | 12,969 | 9,528 | 9,327 | 7,431
Non-Guarantor Subsidiaries (Not 100% Owned) |  |  |  |
Cash flows from operating activities |  |  |  |
Net cash from operating activities | 254 | 0 | (76) |
Cash flows from investing activities |  |  |  |
Capital expenditures | 0 | 0 | 0 |
Net Investing Activity with Affiliates | 0 | 0 | 0 |
Proceeds from Equity Method Investment, Distribution | 0 | 0 | 0 |
Proceeds (Payments) from Investments in Development Agreement | 0 |  |  |
Payments to (Proceeds from) Combined Other Investing Activities | 0 |  |  |
Cash paid for acquisitions, net of cash received | 0 | 0 |  |
Other investing activities |  | 0 | 0 |
Net cash used in investing activities | 0 | 0 | 0 |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 0 | 0 | 0 |
Payments under bank credit facility | 0 | 0 | 0 |
Debt financing costs, net | 0 | 0 | 0 |
Premium and Consent Fees Paid |  | 0 | 0 |
Net Financing Activity with Affiliates | (254) | 0 | 0 |
Cash Dividends Paid to Parent Company by Unconsolidated Subsidiaries | 0 | 0 |  |
Share-based compensation activities, net | 0 |  |  |
Stock Repurchased During Period, Value | 0 |  |  |
Payments of Ordinary Dividends, Common Stock | 0 |  |  |
Proceeds from (Payments for) Other Financing Activities | 0 | 0 |  |
Net cash provided by (used in) financing activities | (254) | (221) | 78 |
Proceeds from Issuance of Senior Long-term Debt |  | 0 | 0 |
Payments on Retirements of Long-term Debt |  | 0 | 0 |
Cash flows from operating activities | 0 | 0 | 0 |
Cash flows from investing activities | 0 | 0 | 0 |
Cash flows from financing activities | 0 | 0 | 0 |
Net cash provided by discontinued operations | 0 | 0 | 0 |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect | 0 | (221) | 2 |
Proceeds from Issuance of Long-term Debt |  | (221) | 78 |
Proceeds from Contributions from Parent |  |  | 0 |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | 0 | 0 | 221 | 219
Eliminations [Member] |  |  |  |
Cash flows from operating activities |  |  |  |
Net cash from operating activities | 949 | (1,196) | 363 |
Cash flows from investing activities |  |  |  |
Capital expenditures | 0 | 0 | 0 |
Net Investing Activity with Affiliates | 443,542 | (211,300) | 65,408 |
Proceeds from Equity Method Investment, Distribution | (10,867) | (9,150) | (11,200) |
Proceeds (Payments) from Investments in Development Agreement | 0 |  |  |
Payments to (Proceeds from) Combined Other Investing Activities | 0 |  |  |
Cash paid for acquisitions, net of cash received | 0 | 0 |  |
Other investing activities |  | 0 | 0 |
Net cash used in investing activities | 432,675 | (220,450) | 54,208 |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 0 | 0 | 0 |
Payments under bank credit facility | 0 | 0 | 0 |
Debt financing costs, net | 0 | 0 | 0 |
Premium and Consent Fees Paid |  | 0 | 0 |
Net Financing Activity with Affiliates | (444,491) | 0 | 0 |
Cash Dividends Paid to Parent Company by Unconsolidated Subsidiaries | (10,867) | (9,150) |  |
Share-based compensation activities, net | 0 |  |  |
Stock Repurchased During Period, Value | 0 |  |  |
Payments of Ordinary Dividends, Common Stock | 0 |  |  |
Proceeds from (Payments for) Other Financing Activities | 0 |  |  |
Net cash provided by (used in) financing activities | (433,624) | 221,646 | (54,571) |
Proceeds from Issuance of Senior Long-term Debt |  | 0 | 0 |
Payments on Retirements of Long-term Debt |  |  | 0 |
Cash flows from operating activities | 0 | 0 | 0 |
Cash flows from investing activities | 0 | 0 | 0 |
Cash flows from financing activities | 0 | 0 | 0 |
Net cash provided by discontinued operations | 0 | 0 | 0 |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect | 0 | 0 | 0 |
Proceeds from Issuance of Long-term Debt |  | 212,496 | (65,771) |
Proceeds from Contributions from Parent |  |  | 11,200 |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | 0 | 0 | 0 | 0
Subsidiary, Wholly Owned [Member] |  |  |  |
Cash flows from operating activities |  |  |  |
Net cash from operating activities | (12,907) | (122,012) | (13,384) |
Cash flows from investing activities |  |  |  |
Capital expenditures | 0 | 0 | 0 |
Net Investing Activity with Affiliates | (22,826) | (448,249) | 0 |
Proceeds from Equity Method Investment, Distribution | 0 | 0 | 0 |
Proceeds (Payments) from Investments in Development Agreement | 0 |  |  |
Payments to (Proceeds from) Combined Other Investing Activities | 0 |  |  |
Cash paid for acquisitions, net of cash received | 0 | 0 |  |
Other investing activities |  | 0 | 0 |
Net cash used in investing activities | (22,826) | (448,249) | 0 |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 0 | 0 | 0 |
Payments under bank credit facility | 0 | 0 | 0 |
Debt financing costs, net | 0 | 0 | 0 |
Premium and Consent Fees Paid |  | 0 | 0 |
Net Financing Activity with Affiliates | 0 | 0 | 0 |
Cash Dividends Paid to Parent Company by Unconsolidated Subsidiaries | 0 | 0 |  |
Share-based compensation activities, net | 0 |  |  |
Stock Repurchased During Period, Value | 0 |  |  |
Payments of Ordinary Dividends, Common Stock | 0 |  |  |
Proceeds from (Payments for) Other Financing Activities | 0 | 0 |  |
Net cash provided by (used in) financing activities | 0 | 0 | (711) |
Proceeds from Issuance of Senior Long-term Debt |  | 0 | 0 |
Payments on Retirements of Long-term Debt |  | 0 | 0 |
Cash flows from operating activities | (514) | (27,796) | 14,095 |
Cash flows from investing activities | 36,247 | 598,057 | 0 |
Cash flows from financing activities | 0 | 0 | 0 |
Net cash provided by discontinued operations | 35,733 | 570,261 | 14,095 |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect | 0 | 0 | 0 |
Proceeds from Issuance of Long-term Debt |  | 0 | (711) |
Proceeds from Contributions from Parent |  |  | 0 |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | $ 0 | 0 | $ 0 | $ 0
Consolidation, Eliminations [Member] |  |  |  |
Cash flows from financing activities |  |  |  |
Proceeds from (Payments for) Other Financing Activities |  | 0 |  |
Payments on Retirements of Long-term Debt |  | $ 0 |  |

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- Definition Amount of cash (inflow) outflow from investing activities classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3098-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3095-108585 + Details
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- Definition The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
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