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Condensed Consolidating Financial Information (Income Statements) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Sep. 02, 2016 | May 21, 2015 | Jun. 08, 2012
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Revenues | $ 542,674 | $ 546,313 | $ 559,867 | $ 550,578 | $ 531,593 | $ 528,897 | $ 540,680 | $ 541,085 | $ 2,199,432 | $ 2,142,255 | $ 2,198,738 |  |  |
Costs and Expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating |  |  |  |  |  |  |  |  | 1,190,824 | 1,184,442 | 1,218,881 |  |  |
Selling, general and administrative |  |  |  |  |  |  |  |  | 322,420 | 327,599 | 341,446 |  |  |
Maintenance and utilities |  |  |  |  |  |  |  |  | 104,548 | 109,526 | 106,695 |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 207,118 | 208,915 | 218,667 |  |  |
Corporate expense |  |  |  |  |  |  |  |  | 76,941 | 75,626 | 63,249 |  |  |
Project development, preopening and writedowns |  |  |  |  |  |  |  |  | 6,907 | 13,747 | 10,371 |  |  |
Project development, preopening and writedowns |  |  |  |  |  |  |  |  | 6,907 | 13,747 | 10,371 |  |  |
Impairments of assets |  |  |  |  |  |  |  |  | 18,565 | 48,681 | 5,351 |  |  |
Other operating charges, net |  |  |  |  |  |  |  |  | (907) | (13) | (2,861) |  |  |
Intercompany expenses |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Total operating costs and expenses |  |  |  |  |  |  |  |  | 1,928,230 | 1,968,523 | 1,967,521 |  |  |
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Operating Income (Loss) | 46,802 | 69,423 | 83,094 | 71,883 | 11,621 | 41,802 | 58,749 | 61,560 | 271,202 | 173,732 | 231,217 |  |  |
Other expense (income) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  | 222,732 | 228,181 | 260,848 |  |  |
Loss on early extinguishments of debt |  |  |  |  |  |  |  |  | 40,733 | 1,536 | 28,346 |  |  |
Other, net |  |  |  |  |  |  |  |  | 3,676 | 48 | (2,090) |  |  |
Total other expense, net |  |  |  |  |  |  |  |  | (267,141) | (229,765) | (287,104) |  |  |
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | 4,061 | (56,033) | (55,887) |  |  |
Income taxes benefit (provision) |  |  |  |  |  |  |  |  | 6,634 | 5,408 | (7,684) |  |  |
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest | (14,434) | 7,015 | (12,390) | 30,504 | (33,286) | (12,256) | (3,971) | (1,112) | 10,695 | (50,625) | (63,571) |  |  |
Income (loss) from discontinued operations, net of tax | 7,565 | 18,410 | 5,965 | 4,599 | 863 | 8,928 | 9,309 | (10,113) | 36,539 | 8,987 | (44,983) |  |  |
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Noncontrolling Interest |  |  |  |  | 0 | (11,777) | (4,669) | 5,043 | 0 | (11,403) | 27,846 |  |  |
Income (loss) from discontinued operations attributable to noncontrolling interest, net of tax |  |  |  |  |  |  |  |  | 0 | 11,403 | (27,846) |  |  |
Net income (loss) |  |  |  |  |  |  |  |  | 47,234 | (53,041) | (80,708) |  |  |
Income (Loss) from Continuing Operations Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | 0 | 0 | (444) |  |  |
Net Income (Loss) Attributable to Parent | $ (6,869) | $ 25,425 | $ (6,425) | $ 35,103 | $ (32,423) | $ (15,105) | $ 669 | $ (6,182) | 47,234 | (53,041) | (80,264) |  |  |
Comprehensive income (loss) |  |  |  |  |  |  |  |  | $ 46,971 | (51,577) | $ (81,263) |  |  |
Boyd |  |  |  |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiaries, Ownership Percentage | 100.00% |  |  |  |  |  |  |  | 100.00% |  | 100.00% |  |  |
Net Revenues |  |  |  |  |  |  |  |  | $ 121,541 | 117,159 | $ 123,951 |  |  |
Costs and Expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating |  |  |  |  |  |  |  |  | 1,800 | 1,800 | 1,848 |  |  |
Selling, general and administrative |  |  |  |  |  |  |  |  | 48,173 | 46,708 | 46,880 |  |  |
Maintenance and utilities |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 6,179 | 5,667 | 6,619 |  |  |
Corporate expense |  |  |  |  |  |  |  |  | 71,700 | 71,951 | 59,128 |  |  |
Project development, preopening and writedowns |  |  |  |  |  |  |  |  | 884 | 105 | 1,586 |  |  |
Impairments of assets |  |  |  |  |  |  |  |  | 0 | 320 | 0 |  |  |
Other operating charges, net |  |  |  |  |  |  |  |  | (599) | (164) | (427) |  |  |
Intercompany expenses |  |  |  |  |  |  |  |  | (1,204) | (1,204) | (1,213) |  |  |
Total operating costs and expenses |  |  |  |  |  |  |  |  | 130,539 | 127,919 | 117,701 |  |  |
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | 190,570 | 85,268 | 95,175 |  |  |
Operating Income (Loss) |  |  |  |  |  |  |  |  | 181,572 | 74,508 | 101,425 |  |  |
Other expense (income) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  | 125,890 | 132,204 | 153,893 |  |  |
Loss on early extinguishments of debt |  |  |  |  |  |  |  |  | 30,829 | 0 | 25,001 |  |  |
Other, net |  |  |  |  |  |  |  |  | 396 | (793) | 137 |  |  |
Total other expense, net |  |  |  |  |  |  |  |  | (157,115) | (131,411) | (179,031) |  |  |
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | 24,457 | (56,903) | (77,606) |  |  |
Income taxes benefit (provision) |  |  |  |  |  |  |  |  | 22,777 | 3,862 | (2,658) |  |  |
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | 47,234 | (53,041) | (80,264) |  |  |
Income (loss) from discontinued operations, net of tax |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Income (loss) from discontinued operations attributable to noncontrolling interest, net of tax |  |  |  |  |  |  |  |  |  |  | (80,264) |  |  |
Net income (loss) |  |  |  |  |  |  |  |  | 47,234 | (41,638) | (108,554) |  |  |
Income (Loss) from Continuing Operations Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  |  |  | 0 |  |  |
Net Income (Loss) Attributable to Parent |  |  |  |  |  |  |  |  | 47,234 | (53,041) | (80,264) |  |  |
Comprehensive income (loss) |  |  |  |  |  |  |  |  | 46,971 | (51,577) | (80,819) |  |  |
Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Revenues |  |  |  |  |  |  |  |  | 2,173,147 | 2,114,021 | 2,170,332 |  |  |
Costs and Expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating |  |  |  |  |  |  |  |  | 1,145,181 | 1,134,312 | 1,167,767 |  |  |
Selling, general and administrative |  |  |  |  |  |  |  |  | 267,661 | 273,924 | 287,007 |  |  |
Maintenance and utilities |  |  |  |  |  |  |  |  | 103,086 | 108,002 | 105,228 |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 196,865 | 200,356 | 209,744 |  |  |
Corporate expense |  |  |  |  |  |  |  |  | 1,781 | 1,849 | 2,793 |  |  |
Project development, preopening and writedowns |  |  |  |  |  |  |  |  | 2,351 | 8,894 | 3,956 |  |  |
Impairments of assets |  |  |  |  |  |  |  |  | 17,500 | 41,090 | 16,835 |  |  |
Other operating charges, net |  |  |  |  |  |  |  |  | (308) | (177) | (2,388) |  |  |
Intercompany expenses |  |  |  |  |  |  |  |  | (140,971) | (134,710) | (142,213) |  |  |
Total operating costs and expenses |  |  |  |  |  |  |  |  | 1,875,704 | 1,902,960 | 1,937,931 |  |  |
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | (2,204) | (2,764) | (1,906) |  |  |
Operating Income (Loss) |  |  |  |  |  |  |  |  | 295,239 | 208,297 | 230,495 |  |  |
Other expense (income) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  | 96,818 | 95,953 | 104,555 |  |  |
Loss on early extinguishments of debt |  |  |  |  |  |  |  |  | 9,904 | 1,536 | 3,343 |  |  |
Other, net |  |  |  |  |  |  |  |  | 2,959 | (683) | (2,160) |  |  |
Total other expense, net |  |  |  |  |  |  |  |  | (109,681) | (96,806) | (105,738) |  |  |
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | 185,558 | 111,491 | 124,757 |  |  |
Income taxes benefit (provision) |  |  |  |  |  |  |  |  | (16,089) | 1,644 | (5,069) |  |  |
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | 169,469 | 113,135 | 119,688 |  |  |
Income (loss) from discontinued operations, net of tax |  |  |  |  |  |  |  |  | 36,539 | (13,819) | 0 |  |  |
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Income (loss) from discontinued operations attributable to noncontrolling interest, net of tax |  |  |  |  |  |  |  |  |  |  | 119,688 |  |  |
Income (Loss) from Continuing Operations Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  |  |  | 0 |  |  |
Net Income (Loss) Attributable to Parent |  |  |  |  |  |  |  |  | 206,008 | 99,316 | 119,688 |  |  |
Comprehensive income (loss) |  |  |  |  |  |  |  |  | 205,745 | 100,780 | 119,133 |  |  |
Non-Guarantor Subsidiaries (100% Owned) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Revenues |  |  |  |  |  |  |  |  | 48,353 | 48,687 | 49,937 |  |  |
Costs and Expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating |  |  |  |  |  |  |  |  | 43,843 | 48,330 | 49,266 |  |  |
Selling, general and administrative |  |  |  |  |  |  |  |  | 6,604 | 7,187 | 7,601 |  |  |
Maintenance and utilities |  |  |  |  |  |  |  |  | 1,462 | 1,523 | 1,467 |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 4,074 | 2,892 | 2,304 |  |  |
Corporate expense |  |  |  |  |  |  |  |  | 3,460 | 1,826 | 1,328 |  |  |
Project development, preopening and writedowns |  |  |  |  |  |  |  |  | 3,596 | 4,586 | 6,722 |  |  |
Impairments of assets |  |  |  |  |  |  |  |  | 1,065 | 7,271 | 1,250 |  |  |
Other operating charges, net |  |  |  |  |  |  |  |  | 0 | 0 | (46) |  |  |
Intercompany expenses |  |  |  |  |  |  |  |  | (1,416) | (1,478) | (2,015) |  |  |
Total operating costs and expenses |  |  |  |  |  |  |  |  | 65,520 | 75,093 | 71,999 |  |  |
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | (76) | (162) | 0 |  |  |
Operating Income (Loss) |  |  |  |  |  |  |  |  | (17,243) | (26,568) | (22,062) |  |  |
Other expense (income) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  | 24 | 24 | 23 |  |  |
Loss on early extinguishments of debt |  |  |  |  |  |  |  |  | 0 | 0 | 2 |  |  |
Other, net |  |  |  |  |  |  |  |  | 321 | 1,524 | (67) |  |  |
Total other expense, net |  |  |  |  |  |  |  |  | (345) | (1,548) | 42 |  |  |
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | (17,588) | (28,116) | (22,020) |  |  |
Income taxes benefit (provision) |  |  |  |  |  |  |  |  | (54) | (98) | 43 |  |  |
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | (17,642) | (28,214) | (21,977) |  |  |
Income (loss) from discontinued operations, net of tax |  |  |  |  |  |  |  |  | 0 | 0 | 23,442 |  |  |
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Income (loss) from discontinued operations attributable to noncontrolling interest, net of tax |  |  |  |  |  |  |  |  |  |  | 1,465 |  |  |
Income (Loss) from Continuing Operations Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  |  |  | 0 |  |  |
Net Income (Loss) Attributable to Parent |  |  |  |  |  |  |  |  | (17,642) | (28,214) | 1,465 |  |  |
Comprehensive income (loss) |  |  |  |  |  |  |  |  | (17,642) | (28,214) | 1,465 |  |  |
Non-Guarantor Subsidiaries (Not 100% Owned) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Revenues |  |  |  |  |  |  |  |  | 0 | 0 | 1,933 |  |  |
Costs and Expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Selling, general and administrative |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Maintenance and utilities |  |  |  |  |  |  |  |  | 0 | 1 | 0 |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Corporate expense |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Project development, preopening and writedowns |  |  |  |  |  |  |  |  | 76 | 162 | 41 |  |  |
Impairments of assets |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Other operating charges, net |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Intercompany expenses |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Total operating costs and expenses |  |  |  |  |  |  |  |  | 76 | 163 | 41 |  |  |
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Operating Income (Loss) |  |  |  |  |  |  |  |  | (76) | (163) | 1,892 |  |  |
Other expense (income) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  | 0 | 0 | 2,377 |  |  |
Loss on early extinguishments of debt |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Other, net |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Total other expense, net |  |  |  |  |  |  |  |  | 0 | 0 | (2,377) |  |  |
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | (76) | (163) | (485) |  |  |
Income taxes benefit (provision) |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | (76) | (163) | (485) |  |  |
Income (loss) from discontinued operations, net of tax |  |  |  |  |  |  |  |  | 0 | 22,806 | (55,692) |  |  |
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Income (loss) from discontinued operations attributable to noncontrolling interest, net of tax |  |  |  |  |  |  |  |  |  |  | (56,177) |  |  |
Income (Loss) from Continuing Operations Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  |  |  | 0 |  |  |
Net Income (Loss) Attributable to Parent |  |  |  |  |  |  |  |  | (76) | 22,643 | (56,177) |  |  |
Comprehensive income (loss) |  |  |  |  |  |  |  |  | (76) | 22,643 | (56,177) |  |  |
Eliminations |  |  |  |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Revenues |  |  |  |  |  |  |  |  | (143,609) | (137,612) | (147,415) |  |  |
Costs and Expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Selling, general and administrative |  |  |  |  |  |  |  |  | (18) | (220) | (42) |  |  |
Maintenance and utilities |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Corporate expense |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Project development, preopening and writedowns |  |  |  |  |  |  |  |  | 0 | 0 | (1,934) |  |  |
Impairments of assets |  |  |  |  |  |  |  |  | 0 | 0 | (12,734) |  |  |
Other operating charges, net |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Intercompany expenses |  |  |  |  |  |  |  |  | 143,591 | 137,392 | 145,441 |  |  |
Total operating costs and expenses |  |  |  |  |  |  |  |  | (143,609) | (137,612) | (160,151) |  |  |
Equity in earnings of subsidiaries |  |  |  |  |  |  |  |  | (188,290) | (82,342) | (93,269) |  |  |
Operating Income (Loss) |  |  |  |  |  |  |  |  | (188,290) | (82,342) | (80,533) |  |  |
Other expense (income) |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense, net |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Loss on early extinguishments of debt |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Other, net |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Total other expense, net |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Income (loss) from continuing operations before income taxes |  |  |  |  |  |  |  |  | (188,290) | (82,342) | (80,533) |  |  |
Income taxes benefit (provision) |  |  |  |  |  |  |  |  | 0 | 0 | 0 |  |  |
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  | (188,290) | (82,342) | (80,533) |  |  |
Income (loss) from discontinued operations, net of tax |  |  |  |  |  |  |  |  | 0 | 0 | (12,733) |  |  |
Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  |  | (11,403) | 27,846 |  |  |
Income (loss) from discontinued operations attributable to noncontrolling interest, net of tax |  |  |  |  |  |  |  |  |  |  | (65,420) |  |  |
Income (Loss) from Continuing Operations Attributable to Noncontrolling Interest |  |  |  |  |  |  |  |  |  |  | (444) |  |  |
Net Income (Loss) Attributable to Parent |  |  |  |  |  |  |  |  | (188,290) | (93,745) | (64,976) |  |  |
Comprehensive income (loss) |  |  |  |  |  |  |  |  | $ (188,027) | $ (95,209) | $ (64,865) |  |  |
9.00% senior notes due 2020 | Senior Notes | Boyd |  |  |  |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, stated interest rate | 9.00% |  |  |  | 9.00% |  |  |  | 9.00% | 9.00% |  |  |  | 9.00%
Senior Notes Due 2023 [Member] | Senior Notes | Boyd |  |  |  |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, stated interest rate | 6.875% |  |  |  |  |  |  |  | 6.875% |  |  | 6.875% | 6.875% |
6.375% Senior Notes Due 2026 [Member] | Senior Notes | Boyd |  |  |  |  |  |  |  |  |  |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiaries, Ownership Percentage |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |
Debt instrument, stated interest rate |  |  |  |  |  |  |  |  |  |  |  | 6.375% |  |

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