Net (Loss) Income Attributable to Common Stockholders and Net (Loss) Income per Share - Calculation of Basic and Diluted Net (Loss) Income Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Basic and Diluted:
Net (loss) income	$ (2,162)	$ 2,873	$ (65,790)	$ 12,800
Basic:
Weighted average shares of common stock used in computing basic net (loss) income per share	42,804	44,870	42,798	46,491
Diluted:
Weighted average shares of common stock used in computing basic net (loss) income per share	42,804	44,870	42,798	46,491
Weighted average effect of dilutive securities:
Stock options		923		1,080
Restricted stock units		1		13
Weighted average shares of common stock used in computing diluted net (loss) income per share	42,804	45,794	42,798	47,584
Net (loss) income per share:
Basic	$ (0.05)	$ 0.06	$ (1.54)	$ 0.28
Diluted	$ (0.05)	$ 0.06	$ (1.54)	$ 0.27
Securities excluded from weighted average shares used in computing diluted net (loss) income per share because the effect would have been anti-dilutive:	10,760	7,347	9,522	6,566