Additional Information with Respect to Outstanding Options (Detail) (USD $)					12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2014 Range One	Jun. 30, 2014 Range Two	Jun. 30, 2014 Range Three	Jun. 30, 2014 Range Four	Jun. 30, 2014 Range Five	Jun. 30, 2014 Range Six	Jun. 30, 2014 Range Seven	Jun. 30, 2014 Range Eight	Jun. 30, 2014 Range Nine	Jun. 30, 2014 Range Ten	Jun. 30, 2014 Range Eleven	Jun. 30, 2014 Range Twelve	Jun. 30, 2014 Range Thirteen
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Options Exercise Price Range					$ 1.29	$ 1.27	$ 1.15	$ 1.07	$ 1.05	$ 0.95	$ 0.86	$ 0.81	$ 0.80	$ 0.75	$ 0.74	$ 0.64	$ 0.50
Options Outstanding, Number of Shares	2,657,348	2,413,525	2,493,125	2,233,475	298,600	15,000	22,500	22,500	22,500	237,375	520,735	823,638	22,500	75,000	22,500	15,000	559,500
Options Outstanding, Weighted Average Remaining Contractual Life					7 months 13 days	1 year 2 months 12 days	1 year 4 months 20 days	2 years 5 months 1 day	4 months 20 days	2 years 8 months 16 days	1 year 7 months 10 days	3 years 7 months 10 days	3 years 4 months 10 days	1 year 10 months 13 days	4 years 4 months 10 days	4 years 4 months 13 days	4 years 7 months 10 days
Options Exercisable, Weighted Average Exercise Price	$ 0.83	$ 0.95	$ 1.32	$ 1.36	$ 1.29	$ 1.27	$ 1.15	$ 1.07	$ 1.05	$ 0.95	$ 0.86	$ 0.81	$ 0.80	$ 0.75	$ 0.74	$ 0.64	$ 0.50
Options Exercisable, Number of Shares					298,600	11,250	22,500	22,500	22,500	119,713	387,198	206,650	22,500	56,250	22,500	0	0
Options Exercisable, Weighted Average Remaining Contractual Life					7 months 13 days	1 year 2 months 12 days	1 year 4 months 20 days	2 years 5 months 1 day	4 months 20 days	2 years 8 months 16 days	1 year 7 months 10 days	3 years 7 months 10 days	3 years 4 months 10 days	1 year 10 months 13 days	4 years 4 months 10 days	4 years 4 months 13 days	4 years 7 months 10 days