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Condensed Consolidating Financial Information (Cash Flows) (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2018 | Dec. 31, 2017
Cash flows from operating activities |  |  |  |
Net cash from operating activities | $ 164,090 | $ 118,525 |  |
Cash flows from investing activities |  |  |  |
Capital expenditures | (89,322) | (25,918) |  |
Net activity with affiliates | 0 | 0 |  |
Other investing activities | (11,918) | (500) |  |
Net cash used in investing activities | (101,240) | (26,418) |  |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 434,829 | 179,600 |  |
Payments under bank credit facility | (466,802) | (264,403) |  |
Debt issue costs | (53) | (9) |  |
Net activity with affiliates | 0 | 0 |  |
Share-based compensation activities, net | (2,921) | (3,589) |  |
Stock Repurchased and Retired During Period, Value | (21,653) | (19,803) |  |
Payments of Ordinary Dividends, Common Stock | (6,705) | (5,632) |  |
Proceeds from (Payments for) Combined Other Financing Activities | (115) | (50) |  |
Net cash provided by (used in) financing activities | (63,420) | (113,886) |  |
Cash and cash equivalents, beginning of period | 272,632 | 205,500 | $ 273,202 | $ 227,279
Net change in cash, cash equivalents and restricted cash | (570) | (21,779) |  |
Parent |  |  |  |
Cash flows from operating activities |  |  |  |
Net cash from operating activities | (30,882) | (19,900) |  |
Cash flows from investing activities |  |  |  |
Capital expenditures | (63,156) | (13,097) |  |
Net activity with affiliates | 0 | 0 |  |
Other investing activities | (4,620) | (500) |  |
Net cash used in investing activities | (67,776) | (13,597) |  |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 434,829 | 179,600 |  |
Payments under bank credit facility | (466,802) | (264,403) |  |
Debt issue costs | (53) | (9) |  |
Net activity with affiliates | 153,873 | 146,984 |  |
Share-based compensation activities, net | (2,921) | (3,589) |  |
Stock Repurchased and Retired During Period, Value | (21,653) | (19,803) |  |
Payments of Ordinary Dividends, Common Stock | 6,705 | 5,632 |  |
Proceeds from (Payments for) Combined Other Financing Activities | 0 | 0 |  |
Net cash provided by (used in) financing activities | 90,568 | 33,148 |  |
Cash and cash equivalents, beginning of period | 607 | (2) | 8,697 | 347
Net change in cash, cash equivalents and restricted cash | (8,090) | (349) |  |
Guarantor Subsidiaries [Member] |  |  |  |
Cash flows from operating activities |  |  |  |
Net cash from operating activities | 193,653 | 144,168 |  |
Cash flows from investing activities |  |  |  |
Capital expenditures | (25,455) | (12,692) |  |
Net activity with affiliates | (153,088) | (154,344) |  |
Other investing activities | (7,298) | 0 |  |
Net cash used in investing activities | (185,841) | (167,036) |  |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 0 | 0 |  |
Payments under bank credit facility | 0 | 0 |  |
Debt issue costs | 0 | 0 |  |
Net activity with affiliates | 0 | 0 |  |
Share-based compensation activities, net | 0 | 0 |  |
Stock Repurchased and Retired During Period, Value | 0 | 0 |  |
Payments of Ordinary Dividends, Common Stock | 0 | 0 |  |
Proceeds from (Payments for) Combined Other Financing Activities | (115) | (50) |  |
Net cash provided by (used in) financing activities | (115) | (50) |  |
Cash and cash equivalents, beginning of period | 247,600 | 191,045 | 239,903 | 213,963
Net change in cash, cash equivalents and restricted cash | 7,697 | (22,918) |  |
Subsidiary, BAC [Member] |  |  |  |
Cash flows from operating activities |  |  |  |
Net cash from operating activities | 0 | 0 |  |
Cash flows from investing activities |  |  |  |
Capital expenditures | 0 | 0 |  |
Net activity with affiliates | 0 | 0 |  |
Other investing activities | 0 | 0 |  |
Net cash used in investing activities | 0 | 0 |  |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 0 | 0 |  |
Payments under bank credit facility | 0 | 0 |  |
Debt issue costs | 0 | 0 |  |
Net activity with affiliates | 0 | 0 |  |
Share-based compensation activities, net | 0 | 0 |  |
Stock Repurchased and Retired During Period, Value | 0 | 0 |  |
Payments of Ordinary Dividends, Common Stock | 0 | 0 |  |
Proceeds from (Payments for) Combined Other Financing Activities | 0 | 0 |  |
Net cash provided by (used in) financing activities | 0 | 0 |  |
Cash and cash equivalents, beginning of period | 0 | 0 | 0 | 0
Net change in cash, cash equivalents and restricted cash | 0 | 0 |  |
Non-Guarantor Subsidiaries (100% Owned) |  |  |  |
Cash flows from operating activities |  |  |  |
Net cash from operating activities | 1,490 | (5,115) |  |
Cash flows from investing activities |  |  |  |
Capital expenditures | (711) | (129) |  |
Net activity with affiliates | 0 | 0 |  |
Other investing activities | 0 | 0 |  |
Net cash used in investing activities | (711) | (129) |  |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 0 | 0 |  |
Payments under bank credit facility | 0 | 0 |  |
Debt issue costs | 0 | 0 |  |
Net activity with affiliates | (956) | 6,732 |  |
Share-based compensation activities, net | 0 | 0 |  |
Stock Repurchased and Retired During Period, Value | 0 | 0 |  |
Payments of Ordinary Dividends, Common Stock | 0 | 0 |  |
Proceeds from (Payments for) Combined Other Financing Activities | 0 | 0 |  |
Net cash provided by (used in) financing activities | (956) | 6,732 |  |
Cash and cash equivalents, beginning of period | 24,425 | 14,457 | 24,602 | 12,969
Net change in cash, cash equivalents and restricted cash | (177) | 1,488 |  |
Non-Guarantor Subsidiaries (Not 100% Owned) |  |  |  |
Cash flows from operating activities |  |  |  |
Net cash from operating activities | 0 | 0 |  |
Cash flows from investing activities |  |  |  |
Capital expenditures | 0 | 0 |  |
Net activity with affiliates | 0 | 0 |  |
Other investing activities | 0 | 0 |  |
Net cash used in investing activities | 0 | 0 |  |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 0 | 0 |  |
Payments under bank credit facility | 0 | 0 |  |
Debt issue costs | 0 | 0 |  |
Net activity with affiliates | 0 | 0 |  |
Share-based compensation activities, net | 0 | 0 |  |
Stock Repurchased and Retired During Period, Value | 0 | 0 |  |
Payments of Ordinary Dividends, Common Stock | 0 | 0 |  |
Proceeds from (Payments for) Combined Other Financing Activities | 0 | 0 |  |
Net cash provided by (used in) financing activities | 0 | 0 |  |
Cash and cash equivalents, beginning of period | 0 | 0 | 0 | 0
Net change in cash, cash equivalents and restricted cash | 0 | 0 |  |
Eliminations |  |  |  |
Cash flows from operating activities |  |  |  |
Net cash from operating activities | (171) | (628) |  |
Cash flows from investing activities |  |  |  |
Capital expenditures | 0 | 0 |  |
Net activity with affiliates | 153,088 | 154,344 |  |
Other investing activities | 0 | 0 |  |
Net cash used in investing activities | 153,088 | 154,344 |  |
Cash flows from financing activities |  |  |  |
Borrowings under bank credit facility | 0 | 0 |  |
Payments under bank credit facility | 0 | 0 |  |
Debt issue costs | 0 | 0 |  |
Net activity with affiliates | (152,917) | (153,716) |  |
Share-based compensation activities, net | 0 | 0 |  |
Stock Repurchased and Retired During Period, Value | 0 | 0 |  |
Payments of Ordinary Dividends, Common Stock | 0 | 0 |  |
Proceeds from (Payments for) Combined Other Financing Activities | 0 | 0 |  |
Net cash provided by (used in) financing activities | (152,917) | (153,716) |  |
Cash and cash equivalents, beginning of period | 0 | 0 | $ 0 | $ 0
Net change in cash, cash equivalents and restricted cash | $ 0 | $ 0 |  |

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