Fair Value Measurement (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended	12 Months Ended
	May 10, 2012	Jun. 30, 2013	Mar. 11, 2013	Jun. 30, 2012	Aug. 25, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of warrants issued	1,709,091				7,000,000
Sale price of warrant (in dollars per share)	5.50
Warrant conversion ratio (in shares)	1
Exercise price of warrants (in dollars per warrant)	8.00				8.00
Exercise period for warrants	3 years
Mark-to-market gain recorded on warrants		$ 4,183
Fair value of derivative embedded within convertible debt		3,870	6,662	0
Conversion dilution percetage, maximum		33.00%
Gain on derivative		2,792
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of outstanding warrants	5,281	443		4,626
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	$ 20,782
Interest rate		8.00%	9.00%
Conversion price (in dollars per share)			$ 1.25