Quarterly report pursuant to Section 13 or 15(d)

Business Segments (Financial Highlights By Business Segment) (Details)

v2.4.0.6
Business Segments (Financial Highlights By Business Segment) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Jan. 31, 2012
Jan. 31, 2011
Jan. 31, 2012
Jan. 31, 2011
Segment Reporting Information [Line Items]        
Fee revenue $ 185,951 $ 186,489 $ 592,418 $ 546,951
Total revenue 194,623 194,109 619,201 570,475
Operating income (loss) 16,165 20,492 67,514 59,539
Change in fair value of acquisition related contingent consideration     2,196 1,878
North America [Member]
        
Segment Reporting Information [Line Items]        
Fee revenue 90,002 94,991 285,938 279,032
Total revenue 95,208 99,357 301,812 293,125
Operating income (loss) 19,082 21,650 68,805 60,920
Europe, Middle East And Africa ("EMEA") [Member]
        
Segment Reporting Information [Line Items]        
Fee revenue 40,508 40,068 124,019 113,760
Total revenue 42,112 41,481 128,298 117,247
Operating income (loss) 5,313 3,360 16,140 6,497
Asia Pacific [Member]
        
Segment Reporting Information [Line Items]        
Fee revenue 20,938 20,445 71,879 65,685
Total revenue 21,553 20,967 73,658 67,080
Operating income (loss) 1,638 2,487 9,343 7,117
South America [Member]
        
Segment Reporting Information [Line Items]        
Fee revenue 8,664 7,638 25,961 23,602
Total revenue 8,798 7,767 26,483 24,018
Operating income (loss) 2,033 1,559 6,266 6,136
Subtotal [Member]
        
Segment Reporting Information [Line Items]        
Fee revenue 160,112 163,142 507,797 482,079
Total revenue 167,671 169,572 530,251 501,470
Operating income (loss) 28,066 29,056 100,554 80,670
Futurestep [Member]
        
Segment Reporting Information [Line Items]        
Fee revenue 25,839 23,347 84,621 64,872
Total revenue 26,952 24,537 88,950 69,005
Operating income (loss) 891 1,268 5,462 3,440
Corporate [Member]
        
Segment Reporting Information [Line Items]        
Operating income (loss) $ (12,792) $ (9,832) $ (38,502) [1] $ (24,571) [1]
[1] The Company recorded an adjustment to the fair value of contingent consideration for a prior acquisition, of $2.2 million and $1.9 million during the nine months ended January 31, 2012 and 2011, respectively.