Summary of Significant Accounting Principles (Details) (USD $)	3 Months Ended		6 Months Ended		38 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013
Summary of Significant Accounting Principles
Net loss	$ (15,581,000)	$ (13,945,000)	$ (14,047,000)	$ (17,266,000)	$ (145,624,000)
Working capital deficit	$ 23,700,000		$ 23,700,000		$ 23,700,000