XML 26 R9.htm IDEA: XBRL DOCUMENT

Prepaid Expenses and Other Current Assets	9 Months Ended
Prepaid Expenses and Other Current Assets	Jan. 31, 2013
Prepaid Expenses and Other Current Assets [Abstract]
Prepaid Expenses and Other Current Assets	3. Prepaid Expenses and Other Current Assets Prepaid expenses and other current assets at January 31, 2013 consisted of prepaid expenses of $0.3 million and other current assets of $0.8 million. Prepaid expenses and other current assets at April 30, 2012 consisted of prepaid expenses of $1.1 million and other current assets of $0.7 million.