XML 35 R45.htm IDEA: XBRL DOCUMENT

RELATED PARTY TRANSACTIONS (Details Textual) (USD $)	9 Months Ended		9 Months Ended
RELATED PARTY TRANSACTIONS (Details Textual) (USD $)	Jan. 31, 2013	Apr. 30, 2012	Jan. 31, 2013 Trenton Operations [Member]	Jan. 31, 2012 Trenton Operations [Member]	Jan. 31, 2013 Pride Group Pty Limited [Member]	Jan. 31, 2012 Pride Group Pty Limited [Member]	Jan. 31, 2013 Taian Gas Group and Subsidiaries [Member]	Jan. 31, 2012 Taian Gas Group and Subsidiaries [Member]
Operating Leases, Rent Expense			$ 12,600	$ 52,200	$ 52,869	$ 53,335
Related Party Transaction, Date	Jun. 30, 2012
Revenue from Related Parties							649,074	2,193,044
Accounts receivable, net of allowance of $1,635,761 and $1,794,729 at January 31, 2013 and April 30, 2012, respectively	$ 10,903,997	$ 22,343,304					$ 490,363	$ 1,034,839

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References+ Details