EARNINGS PER SHARE (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
EARNINGS PER SHARE
Net income attributable to Bally Technologies, Inc.	$ 38,449	$ 29,967	$ 104,107	$ 74,627
Weighted average shares outstanding	40,483	43,087	40,594	43,229
Dilutive effect of:
Stock options, Restricted Stock Units ("RSU") and restricted stock (in shares)	716	1,965	1,020	1,909
Weighted average diluted shares outstanding (in shares)	41,199	45,052	41,614	45,138
Basic and diluted earnings per share attributable to Bally Technologies, Inc.
Basic earnings per share (in dollars per share)	$ 0.95	$ 0.70	$ 2.56	$ 1.73
Diluted earnings per share (in dollars per share)	$ 0.93	$ 0.67	$ 2.50	$ 1.65
Stock options, RSU and restricted stock having anti-dilutive effect in calculation of diluted earnings per share (in shares)	76	524	115	713