XML 75 R49.htm IDEA: XBRL DOCUMENT v2.4.1.9
LONG-TERM DEBT - Senior Unsecured Notes (Details) (USD $)
Sep. 30, 2014
Sep. 30, 2013
Aug. 31, 2013
Mar. 31, 2012
Debt Instrument [Line Items]        
Accrued interest $ 8,659,000us-gaap_InterestPayableCurrent $ 23,296,000us-gaap_InterestPayableCurrent    
Senior Unsecured Notes | 2013 9 3/4% Senior Unsecured Notes        
Debt Instrument [Line Items]        
Loan face amount     500,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorUnsecuredNotes20139Point75PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_UnsecuredDebtMember		  
Note stated interest rate 9.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorUnsecuredNotes20139Point75PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_UnsecuredDebtMember		 9.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorUnsecuredNotes20139Point75PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_UnsecuredDebtMember		 9.75%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorUnsecuredNotes20139Point75PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_UnsecuredDebtMember		  
Redeemable rate     100.00%mtga_DebtInstrumentRedeemableRate
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorUnsecuredNotes20139Point75PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_UnsecuredDebtMember		  
Redeemable rate after cutoff upon change of control     101.00%mtga_DebtInstrumentRedeemableRateUponChangeOfControl
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorUnsecuredNotes20139Point75PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_UnsecuredDebtMember		  
Redeemable rate upon certain conditions     100.00%mtga_DebtInstrumentRedeemableRateUponCertainConditions
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorUnsecuredNotes20139Point75PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_UnsecuredDebtMember		  
Accrued interest 4,100,000us-gaap_InterestPayableCurrent
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorUnsecuredNotes20139Point75PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_UnsecuredDebtMember		 6,200,000us-gaap_InterestPayableCurrent
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorUnsecuredNotes20139Point75PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_UnsecuredDebtMember		    
Senior Unsecured Notes | 2012 11 % Senior Subordinated Notes        
Debt Instrument [Line Items]        
Amount of debt repurchased     69,000,000us-gaap_DebtInstrumentRepurchaseAmount
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorSubordinatedNotes201211PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_UnsecuredDebtMember		  
Senior Secured Notes | 2012 10 1/2% Third Lien Senior Secured Notes        
Debt Instrument [Line Items]        
Note stated interest rate     10.50%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mtga_ThirdLienSeniorSecuredNotes201210Point5PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SecuredDebtMember		  
Senior Subordinated Notes | 2012 11 % Senior Subordinated Notes        
Debt Instrument [Line Items]        
Loan face amount       344,200,000.0us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorSubordinatedNotes201211PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember
Note stated interest rate 11.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorSubordinatedNotes201211PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember		 11.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorSubordinatedNotes201211PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember		 11.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorSubordinatedNotes201211PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember		 11.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorSubordinatedNotes201211PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember
Amount of debt repurchased     69,000,000us-gaap_DebtInstrumentRepurchaseAmount
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorSubordinatedNotes201211PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember		  
Redeemable rate       100.00%mtga_DebtInstrumentRedeemableRate
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorSubordinatedNotes201211PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember
Redeemable rate after cutoff upon change of control       101.00%mtga_DebtInstrumentRedeemableRateUponChangeOfControl
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorSubordinatedNotes201211PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember
Redeemable rate upon certain conditions       100.00%mtga_DebtInstrumentRedeemableRateUponCertainConditions
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorSubordinatedNotes201211PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember
Accrued interest $ 1,300,000us-gaap_InterestPayableCurrent
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorSubordinatedNotes201211PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember		 $ 1,300,000us-gaap_InterestPayableCurrent
/ us-gaap_DebtInstrumentAxis
= mtga_SeniorSubordinatedNotes201211PercentMember
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorSubordinatedNotesMember