Consolidated Statements of Stockholders' Equity (Deficit)) (USD $) In Thousands, except Share data	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Total
Beginning balance, value at Jun. 30, 2009	$ 3	$ 361,153	$ 1	$ (362,898)	$ (1,741)
Beginning balance, shares at Jun. 30, 2009	27,539,378
Issuance of common stock in a registered direct offering for cash, net of issuance costs, shares	8,054,968
Issuance of common stock in a registered direct offering for cash, net of issuance costs	1	50,792			50,793
Issuance of common stock in a rights offering for cash and settlement of related party note, net of issuance costs, shares	22,500,000
Issuance of common stock in a rights offering for cash and settlement of related party note, net of issuance costs	2	27,804			27,806
Issuance of common stock upon exercise of stock options and purchase rights at an average price, shares	1,105,060
Issuance of common stock upon exercise of stock options and purchase rights at an average price		1,744			1,744
Share-based compensation expense		3,190			3,190
Change in unrealized gain (loss) on marketable securities			(7)		(7)
Net income				(15,024)	(15,024)
Ending balance at Jun. 30, 2010	6	444,683	(6)	(377,922)	66,761
Ending balance, shares at Jun. 30, 2010	59,199,406
Issuance of common stock in a registered direct offering for cash, net of issuance costs, shares	6,448,829
Issuance of common stock in a registered direct offering for cash, net of issuance costs	1	56,039			56,040
Issuance of common stock upon exercise of stock options and purchase rights at an average price, shares	2,267,630
Issuance of common stock upon exercise of stock options and purchase rights at an average price		6,273			6,273
Share-based compensation expense		7,818			7,818
Change in unrealized gain (loss) on marketable securities			(15)		(15)
Net income				(35,203)	(35,203)
Ending balance at Jun. 30, 2011	7	514,813	(21)	(413,125)	101,674
Ending balance, shares at Jun. 30, 2011	67,915,865				67,915,865
Issuance of common stock upon exercise of stock options and purchase rights at an average price, shares	1,401,792
Issuance of common stock upon exercise of stock options and purchase rights at an average price		8,578			8,578
Share-based compensation expense		9,873			9,873
Change in unrealized gain (loss) on marketable securities			12		12
Net income				11,986	11,986
Ending balance at Jun. 30, 2012	$ 7	$ 533,264	$ (9)	$ (401,139)	$ 132,123
Ending balance, shares at Jun. 30, 2012	69,317,657				69,317,657