CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Sep. 30, 2014	Sep. 30, 2010
Revenues:
Gaming	$ 275,016	$ 278,400	$ 552,750	$ 553,153
Food and beverage	21,119	22,613	43,790	45,332
Hotel	12,273	11,911	24,499	22,603
Retail, entertainment and other	24,107	26,018	52,406	55,523
Gross revenues	332,515	338,942	673,445	676,611
Less-Promotional allowances	(22,092)	(22,259)	(46,290)	(47,105)
Net revenues	310,423	316,683	627,155	629,506
Operating costs and expenses:
Gaming	155,666	165,739	321,765	342,041
Food and beverage	10,229	10,749	21,040	20,848
Hotel	3,476	4,074	6,979	7,794
Retail, entertainment and other	9,577	11,352	21,821	24,128
Advertising, general and administrative	48,609	47,869	94,424	94,811
Corporate	8,642	10,860	16,281	20,292
Depreciation and amortization	19,564	20,879	39,617	39,997
Loss on disposition of assets	80	53	819	52
Severance	3,370	0	3,370	0
Pre-opening	0	25	0	1,187
Impairment of Project Horizon	2,502	0	2,502	0	5,000	58,100
Relinquishment liability reassessment	(299)	0	(243)	0
Total operating costs and expenses	261,416	271,600	528,375	551,150
Income from operations	49,007	45,083	98,780	78,356
Other income (expense):
Accretion of discount to the relinquishment liability	0	(551)	(227)	(1,102)
Interest income	1,814	1,602	3,648	3,246
Interest expense, net of capitalized interest	(35,777)	(36,297)	(72,032)	(75,266)
Loss on early extinguishment of debt	0	(192)	0	(62,275)
Other expense, net	(482)	(174)	(1,210)	(878)
Total other expense	(34,445)	(35,612)	(69,821)	(136,275)
Net income (loss)	14,562	9,471	28,959	(57,919)
Loss attributable to non-controlling interests	470	155	839	291
Net income (loss) attributable to Mohegan Tribal Gaming Authority	$ 15,032	$ 9,626	$ 29,798	$ (57,628)