Consolidated Balance Sheets (Unaudited) (Under Creditor Protection Proceedings as of November 29, 2011 note 1) (Parenthetical) (USD $)	Jan. 31, 2012	Apr. 30, 2011
Capital Stock
Preferred Stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred Stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred Stock, shares outstanding (in shares)	1	1
Common Stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common Stock, shares authorized (in shares)	750,000,000	750,000,000
Common Stock, shares outstanding (in shares)	348,698,837	348,495,556