Shareholders' Equity - Activity of Company's Share Options (Detail) - $ / shares	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of Shares, Options outstanding, Beginning balance	590,142	548,999	617,499	400,499
Number of Shares, Granted	75,000	90,000	21,000	260,000
Number of Shares, Forfeited	(29,500)	(48,857)	(89,500)	(43,000)
Number of Shares, Options outstanding, Ending balance	635,642	590,142	548,999	617,499
Options Outstanding, Weighted Average Exercise Price, Beginning Balance	$ 2.46	$ 2.71	$ 1.92	$ 2.62
Exercisable, Number of Shares, Options outstanding, Ending balance	530,642	470,142	448,998
Weighted Average Exercise Price, Granted	$ 1.79	$ 1.49	$ 0.71	1.22
Weighted Average Exercise Price, Forfeited	9.05	3.50	2.15	2.13
Options Outstanding, Weighted Average Exercise Price, Ending Balance	2.07	2.46	2.71	1.92
Exercisable, Weighted Average Exercise Price, Ending balance	2.16	2.73	2.97
Range of Exercise Prices, Granted	1.79	1.49	0.71	1.22
Minimum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding Options, Range of Exercise Prices, Beginning balance	0.71	0.71	1.22	1.67
Range of Exercise Prices, Forfeited	2.51	0.71	1.22	2.09
Outstanding Options, Range of Exercise Prices, Ending balance	0.71	0.71	0.71	1.22
Exercisable, Range of Exercise Prices, Ending balance	0.71	0.71	0.71
Maximum [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Outstanding Options, Range of Exercise Prices, Beginning balance	9.63	9.63	9.63	9.63
Range of Exercise Prices, Forfeited	9.63	9.63	2.90	2.65
Outstanding Options, Range of Exercise Prices, Ending balance	8.00	9.63	9.63	$ 9.63
Exercisable, Range of Exercise Prices, Ending balance	$ 8.00	$ 9.63	$ 9.63