Stockholders' Equity - Activity under 1998 Stock Plan (Detail) (USD $)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Options Outstanding
Balance, ending	2,282,390
Weighted Average Price
Balance, ending	$ 4.27
1998 Stock Plan
Options Outstanding
Balance, beginning	168,652	296,012	430,711
Options Exercised	(73,984)	(124,320)	(79,416)
Options Forfeited / Expired	(3,100)	(3,040)	(55,283)
Balance, ending	91,568	168,652	296,012
Weighted Average Price
Balance, beginning	$ 1.22	$ 1.22	$ 2.86
Options Exercised	$ 1.86	$ 1.22	$ 2.43
Options Forfeited / Expired	$ 2.55	$ 1.50	$ 12.21
Balance, ending	$ 0.66	$ 1.22	$ 1.22