Stock Options (Detail) (USD $)	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Employee Stock Option Plan 2002 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, beginning of year, weighted average exercise price	$ 2.95	$ 2.95	$ 2.95
Outstanding, end of year, weighted average exercise price	$ 2.95	$ 2.95	$ 2.95
Exercisable, end of year, weighted average exercise price	$ 2.95	$ 2.93
Outstanding, beginning of year		1,380,140	1,380,140
Outstanding, end of year	1,380,140	1,380,140
Exercisable, end of year	1,380,140	1,372,140
Total intrinsic value of options outstanding	$ 1,066,760	$ 1,097,191
Total intrinsic value of options exercisable	$ 1,066,760	$ 1,097,191
Stock Option Plan 2000 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, beginning of year, weighted average exercise price	$ 5.03	$ 5.03	$ 5.03
Outstanding, end of year, weighted average exercise price	$ 5.03	$ 5.03	$ 5.03
Exercisable, end of year, weighted average exercise price	$ 5.03	$ 5.03
Outstanding, beginning of year		30,000	30,000
Outstanding, end of year	30,000	30,000
Exercisable, end of year	30,000	30,000