CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jan. 31, 2013	Apr. 30, 2012
ASSETS
Cash and cash equivalents	$ 168,235	$ 282,005
Marketable securities	23,318	40,936
Receivables due from clients, net of allowance for doubtful accounts of $11,027 and $9,437, respectively	164,870	126,579
Income taxes and other receivables	20,923	11,902
Deferred income taxes	7,971	10,830
Prepaid expenses and other assets	30,513	27,815
Total current assets	415,830	500,067
Marketable securities, non-current	113,793	94,798
Property and equipment, net	50,466	49,808
Cash surrender value of company owned life insurance policies, net of loans	83,534	77,848
Deferred income taxes, net	49,143	57,290
Goodwill, net	261,182	176,338
Intangible assets, net	59,734	20,413
Investments and other assets	29,708	38,127
Total assets	1,063,390	1,014,689
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	16,476	14,667
Income taxes payable	5,576	8,720
Compensation and benefits payable	127,179	160,810
Other accrued liabilities	85,116	37,527
Total current liabilities	234,347	221,724
Deferred compensation and other retirement plans	148,651	142,577
Other liabilities	22,169	20,912
Total liabilities	405,167	385,213
Stockholders' equity:
Common stock: $0.01 par value, 150,000 shares authorized, 60,912 and 59,975 shares issued and 48,630 and 47,913 shares outstanding, respectively	427,693	419,998
Retained earnings	223,893	202,797
Accumulated other comprehensive income, net	7,139	7,191
Stockholders' equity	658,725	629,986
Less: notes receivable from stockholders	(502)	(510)
Total stockholders' equity	658,223	629,476
Total liabilities and stockholders' equity	$ 1,063,390	$ 1,014,689