XML 23 R28.htm IDEA: XBRL DOCUMENT

Income Taxes (Details)	6 Months Ended
Income Taxes (Details)	Oct. 31, 2012	Oct. 31, 2011
Effective Income Tax Rate, Continuing Operations	39.90%	0.00%

- Definition

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

+ References+ Details