Segment Information (Continuing Operations By Reportable Operating Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jul. 31, 2013	Jul. 31, 2012
Segment Reporting Information [Line Items]
REVENUES	$ 127,195	$ 96,489
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE TAXES	(184,494)	(169,269)
Tax Services
Segment Reporting Information [Line Items]
REVENUES	121,691	90,253
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE TAXES	(144,394)	(140,905)
Corporate And Eliminations
Segment Reporting Information [Line Items]
REVENUES	5,504	6,236
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE TAXES	$ (40,100)	$ (28,364)