Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Assets :
Cash and cash equivalents	$ 507,693	$ 487,845
Cash and cash equivalents - restricted	88,962	121,419
Investment securities	217,352	201,348
Receivables:
Funds and separate accounts	38,682	36,467
Customers and other	205,204	141,763
Deferred income taxes	5,845	7,654
Income taxes receivable	5,404	419
Prepaid expenses and other current assets	14,350	9,410
Total current assets	1,083,492	1,006,325
Property and equipment, net	82,952	72,638
Deferred sales commissions, net	80,249	79,894
Goodwill and identifiable intangible assets	161,969	161,969
Deferred income taxes	3,916	3,839
Other non-current assets	24,429	12,300
Total assets	1,437,007	1,336,965
Liabilities:
Accounts payable	19,582	18,821
Payable to investment companies for securities	125,227	214,085
Payable to third party brokers	62,632	59,756
Payable to customers	115,570	8,664
Accrued compensation	65,660	58,677
Other current liabilities	48,487	59,726
Total current liabilities	437,158	419,729
Long-term debt	190,000	190,000
Accrued pension and postretirement costs	12,226	13,333
Other non-current liabilities	25,300	26,561
Total liabilities	664,684	649,623
Commitments and contingencies
Stockholders' equity :
Preferred stock -$1.00 par value: 5,000 shares authorized; none issued
Class A Common stock-$0.01 par value: 250,000 shares authorized; 99,701 shares issued; 84,732 shares outstanding (85,236 at December 31, 2013)	997	997
Additional paid-in capital	299,063	267,406
Retained earnings	950,660	850,600
Cost of 14,969 common shares in treasury (14,465 at December 31, 2013)	(464,641)	(415,802)
Accumulated other comprehensive loss	(13,756)	(15,859)
Total stockholders' equity	772,323	687,342
Total liabilities and stockholders' equity	$ 1,437,007	$ 1,336,965