EARNINGS PER SHARE (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
EARNINGS PER SHARE
Net income attributable to Bally Technologies, Inc.	$ 33,126	$ 24,268	$ 65,658	$ 44,660
Weighted average shares outstanding	40,399	42,870	40,633	43,296
Dilutive effect of:
Stock options, Restricted Stock Units ("RSU") and restricted stock (in shares)	1,095	1,901	1,172	1,880
Weighted average diluted shares outstanding (in shares)	41,494	44,771	41,805	45,176
Basic and diluted earnings per share attributable to Bally Technologies, Inc.
Basic earnings per share (in dollars per share)	$ 0.82	$ 0.57	$ 1.62	$ 1.03
Diluted earnings per share (in dollars per share)	$ 0.80	$ 0.54	$ 1.57	$ 0.99
Stock options, RSU and restricted stock having anti-dilutive effect in calculation of diluted earnings per share (in shares)	119	761	177	781