Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating activities:
Consolidated net income	$ 30,902	$ 26,965
Non-cash items included in consolidated net income:
Depreciation and amortization	3,612	5,463
Net investment gains	1,612	(100)
Restricted stock units recognized and common stock issued	42,916	42,008
Deferred taxes	(2,809)	(13,683)
Deferred gain on sale of certain merchant banking assets	(147)	(194)
Changes in operating assets and liabilities:
Advisory fees receivable	(10,201)	(5,549)
Other receivables and assets	(3,578)	(1,174)
Compensation payable	(16,807)	(27,098)
Accounts payable and accrued expenses	3,326	7,607
Current income taxes payable	(3,876)	1,989
Net cash provided by operating activities	44,950	36,234
Investing activities:
Purchases of investments	(500)	(6,536)
Proceeds from sales of investments	26,582	24,914
Distributions from investments	1,004	3,040
Purchases of property and equipment	(637)	(2,106)
Net cash provided by investing activities	26,449	19,312
Financing activities:
Proceeds from revolving bank loan	89,900	62,595
Repayment of revolving bank loan	(82,675)	(55,270)
Distributions to noncontrolling interests	(311)	0
Dividends paid	(42,175)	(42,221)
Purchase of treasury stock	(54,796)	(40,497)
Net tax (cost) from the delivery of restricted stock units and payment of dividend equivalents	(269)	(4,430)
Net cash used in financing activities	(90,326)	(79,823)
Effect of exchange rate changes on cash and cash equivalents	(1,053)	334
Net decrease in cash and cash equivalents	(19,980)	(23,943)
Cash and cash equivalents, beginning of year	50,324	62,050
Cash and cash equivalents, end of year	30,344	38,107
Supplemental disclosure of cash flow information:
Cash paid for interest	761	763
Cash paid for taxes, net of refunds	$ 27,040	$ 24,742