EARNINGS PER SHARE (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
EARNINGS PER SHARE
Net income attributable to Bally Technologies, Inc.	$ 32,532	$ 20,392
Weighted average shares outstanding	40,868	43,708
Dilutive effect of:
Stock options, Restricted Stock Units ("RSU") and restricted stock (in shares)	1,247	1,859
Weighted average diluted shares outstanding (in shares)	42,115	45,567
Basic and diluted earnings per share attributable to Bally Technologies, Inc.
Basic earnings per share (in dollars per share)	$ 0.80	$ 0.47
Diluted earnings per share (in dollars per share)	$ 0.77	$ 0.45
Stock options, RSU and restricted stock having anti-dilutive effect in calculation of diluted earnings per share (in shares)	272	785