Deferred Fees (Details) (USD $)			1 Months Ended	6 Months Ended
	Sep. 30, 2013	Mar. 31, 2013	Jul. 31, 2013 Off-take agreement Sichuan	Sep. 30, 2013 Off-take agreement Sichuan
Deferred Fees
One-time success fee payable to third party	$ 7,313,000	$ 7,751,000		$ 7,800,000
Reduction in third party fee payable			$ 400,000
Amortization period				10 years