v2.4.0.6

Long-Term Debt (Borgata Senior Secured Notes Narrative) (Details) (USD $) |  |  |  |  | 12 Months Ended |  | 12 Months Ended |  |  | 12 Months Ended |  |  |  | 12 Months Ended |  |  |  |  |  |
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2012 Borgata | Dec. 31, 2011 Borgata | Dec. 31, 2012 Borgata Senior Secured Notes | Dec. 31, 2011 Borgata Senior Secured Notes | Aug. 06, 2010 Borgata Senior Secured Notes | Dec. 31, 2011 Borgata Senior Secured Notes 9.50% Senior Secured Notes Due 2015 | Dec. 31, 2012 Borgata Senior Secured Notes 9.50% Senior Secured Notes Due 2015 | Aug. 31, 2010 Borgata Senior Secured Notes 9.50% Senior Secured Notes Due 2015 | Dec. 31, 2012 Borgata Senior Secured Notes 9.50% Senior Secured Notes Due 2015 Prior to October 15, 2013 | Dec. 31, 2012 Borgata Senior Secured Notes 9.50% Senior Secured Notes Due 2015 On or After October 15, 2013 and Prior to October 15, 2014 | Dec. 31, 2012 Borgata Senior Secured Notes 9.50% Senior Secured Notes Due 2015 On or After October 15, 2014 | Dec. 31, 2011 Borgata Senior Secured Notes 9.875% Senior Secured Notes Due 2018 | Dec. 31, 2012 Borgata Senior Secured Notes 9.875% Senior Secured Notes Due 2018 | Aug. 31, 2010 Borgata Senior Secured Notes 9.875% Senior Secured Notes Due 2018 | Dec. 31, 2012 Borgata Senior Secured Notes 9.875% Senior Secured Notes Due 2018 Prior to August 15, 2014 | Dec. 31, 2012 Borgata Senior Secured Notes 9.875% Senior Secured Notes Due 2018 Prior to August 15, 2013 | Dec. 31, 2012 Borgata Senior Secured Notes 9.875% Senior Secured Notes Due 2018 On or After August 15, 2014 and Prior to August 15, 2015 | Dec. 31, 2012 Borgata Senior Secured Notes 9.875% Senior Secured Notes Due 2018 On or After August 15, 2015 and Prior to August 15, 2016 | Dec. 31, 2012 Borgata Senior Secured Notes 9.875% Senior Secured Notes Due 2018 On or After August 15, 2016 | Dec. 31, 2012 Borgata Bank Credit Facility | Dec. 31, 2011 Borgata Bank Credit Facility | Aug. 31, 2010 Minimum Borgata Senior Secured Notes | Dec. 31, 2012 Borgata Bank Credit Facility Amendment Borgata Bank Credit Facility | Dec. 27, 2012 Borgata Bank Credit Facility Amendment Borgata Bank Credit Facility | Nov. 11, 2011 Borgata Bank Credit Facility Amendment Borgata Bank Credit Facility
For the year ending December 31, |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Face amount |  |  |  |  |  |  | $ 800,000,000 |  |  | $ 400,000,000 |  |  |  |  |  | $ 400,000,000 |  |  |  |  |  |  |  |  |  |  |
Debt instrument, stated interest rate |  |  |  |  |  |  |  |  |  | 9.50% |  |  |  |  |  | 9.875% |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Purchase Price of Senior Secured Notes Purchased and Retired |  |  |  |  |  | 8,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on Purchase and Retirement of Senior Secured Notes |  |  |  |  |  | 100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective interest rate at period end |  |  |  |  |  |  |  |  | 10.20% |  |  |  |  |  | 10.30% |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Principal Amount of Senior Secured Notes Purchased and Retired |  |  |  |  |  | 8,500,000 |  | 2,000,000 |  |  |  |  |  | 6,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Issue price, net of discount, % of principal |  |  |  |  |  |  |  |  |  | 98.943% |  |  |  |  |  | 99.315% |  |  |  |  |  |  |  |  |  |  |
Unamortized discount | 42,298,000 | 9,955,000 | 4,628,000 | 5,637,000 |  |  |  | 3,271,000 | 2,525,000 | 4,200,000 |  |  |  | 2,366,000 | 2,103,000 | 2,700,000 |  |  |  |  |  | 0 | 0 |  |  |  |
Redemption price, % of principal, subject to make-whole premium |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |
Annual redeemable portion of principal amount, % |  |  |  |  |  |  |  |  |  |  | 10.00% |  |  |  |  |  |  | 10.00% |  |  |  |  |  |  |  |  |
Debt instrument, redemption price, percentage |  |  |  |  |  |  |  |  |  |  | 103.00% | 104.75% | 102.375% |  |  |  |  | 103.00% | 104.938% | 102.469% | 100.00% |  |  |  |  |  |
Redeemable portion of principal amount, % |  |  |  |  |  |  |  |  |  |  | 35.00% |  |  |  |  |  |  | 35.00% |  |  |  |  |  |  |  |  |
Redemption price, % of principal, redeemable with proceeds from certain equity offerings |  |  |  |  |  |  |  |  |  |  | 109.50% |  |  |  |  |  |  | 109.875% |  |  |  |  |  |  |  |  |
Minimum required coverage ratio |  |  |  |  | 2.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Actual coverage ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.0 |  |  |
Line of credit, maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 60,000,000 | 60,000,000
Amount outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20,000,000 |  |
Remaining borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 40,000,000 |  |

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