Commitments - employment agreements (Narrative) (Detail) (USD $)	12 Months Ended
	Jun. 30, 2012
Employment contracts expiring through August 2013 [Member]
Commitments Disclosure [Line Items]
Number of agreements	1
Employment contracts expiring through August 2013 [Member] | Chief executive officer [Member]
Commitments Disclosure [Line Items]
Salary commitment	$ 587,000
Stock option commitment	25,000
Termination pay commitment rate applied to the average of the prior five calendar years compensation	299.00%
Employee severance [Member]
Commitments Disclosure [Line Items]
Number of agreements	1