Segment Information (Continuing Operations By Reportable Operating Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2013	Oct. 31, 2012
Segment Reporting Information [Line Items]
REVENUES	$ 134,340	$ 137,263	$ 261,535	$ 233,752
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE TAXES	(179,362)	(162,288)	(363,856)	(331,557)
Tax Services
Segment Reporting Information [Line Items]
REVENUES	128,040	129,819	249,731	220,072
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE TAXES	(159,314)	(130,109)	(303,708)	(271,014)
Corporate And Eliminations
Segment Reporting Information [Line Items]
REVENUES	6,300	7,444	11,804	13,680
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE TAXES	$ (20,048)	$ (32,179)	$ (60,148)	$ (60,543)