RELATED PARTY TRANSACTIONS (Details) $ in Thousands		3 Months Ended		9 Months Ended
	Mar. 05, 2015 a rooms	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)
Related Party Transaction [Line Items]
Distributions to Mohegan Tribe				$ 32,500	$ 32,500
Minimum Future Rental Expense
Minimum future rental expense - Remainder of 2015		$ 0		0
Minimum future rental expense - 2016		0		0
Minimum future rental expense - 2017		6,327		6,327
Minimum future rental expense - 2018		6,908		6,908
Minimum future rental expense - 2019		7,011		7,011
Minimum future rental expense - Thereafter		224,682		224,682
Total minimum future rental expense		244,928		244,928
Mohegan Tribe of Indians of Connecticut
Related Party Transaction [Line Items]
Distributions to Mohegan Tribe		12,500	$ 12,500	32,500	32,500
Expenses for services provided to related party		7,200	6,200	21,400	20,500
Incurred interest expense associated with a related party debt		529	541	1,600	1,700
Mohegan Tribal Utility Authority
Related Party Transaction [Line Items]
Utilities purchased from related party		$ 3,900	$ 4,400	$ 13,300	$ 15,200
Mohegan Tribal Finance Authority
Related Party Transaction [Line Items]
Fourth Amendment, Amount of acres released for use | a	1.2
Fourth Amendment, Amount of rooms to be developed | rooms	400
Duration of the term of the Fourth Amendment	28 years 4 months