Fair Value Measurement (Details) (USD $)	0 Months Ended	3 Months Ended	9 Months Ended
	May 10, 2012	Mar. 31, 2013	Mar. 31, 2013	Mar. 11, 2013	Jun. 30, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of warrants issued	1,709,091
Sale price of warrants (in dollars per warrant)	5.50
Warrant conversion ratio	1
Exercise price of warrants (in dollars per warrant)	8.00
Exercise period for warrants	3 years
Mark-to-market gain recorded on warrants		$ 300,000	$ 3,983,000
Fair value of derivative embedded within convertible debt		6,161,000	6,161,000	6,662,000	0
Conversion dilution percetage, maximum		3300.00%	3300.00%
Gain on derivative		501,000
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of outstanding warrants	5,281,000	643,000	643,000		4,626,000
Fair value recorded on a recurring basis | Overnight money market institutional funds | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in money market funds		1,278,000	1,278,000		1,838,000
Secured Convertible Notes | Secured Convertible 8% Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt issue amount		$ 50,082,000	$ 50,082,000	$ 20,782,000
Interest rate				8.00%
Conversion price				$ 1.25