Common Stock Warrants (Details Textual) (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2013
Common stock warrants (Textual)
Weighted average fair value of warrants (in usd per share)	$ 6.00
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding	$ 2,167,000	$ 25,697,000