Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash Flows from Operating Activities:
Net income	$ 13,817	$ 7,533
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and other amortization	759	974
Intangible asset amortization	1,985	2,057
Stock-based compensation	3,750	2,518
Amortization of deferred commissions	5,561	3,609
Payments of deferred commissions	(5,336)	(6,546)
Equity in earnings of affiliates, net of dividends		223
Realized and unrealized gains on trading securities	(1,010)	(839)
Sale(purchase) of trading securities, net	862	(3,933)
Deferred income taxes	9,055
Changes in operating assets and liabilities:
Accounts receivable	(5,601)	(3,642)
Prepaid expenses and other assets	(255)	(522)
Accounts payable and accrued liabilities	(9,426)	(691)
Other liabilities	2,005	(685)
Net cash provided by operating activities	16,166	56
Cash Flows from Investing Activities:
Capital expenditures	(2,337)	(373)
Purchase of investment management contracts		(141)
Purchase of available-for-sale securities	(187)	(178)
Net cash used in investing activities	(2,524)	(692)
Cash Flows from Financing Activities:
Contingent consideration paid for acquired investment management contracts	(350)	(374)
Preferred stockholder dividends paid		(1,408)
Repurchase of common shares		(4,820)
Proceeds from exercise of stock options	1,334	410
Taxes paid related to net share settlement of restricted stock units	(11,208)	(485)
Net cash used in financing activities	(10,224)	(6,677)
Net increase (decrease) in cash and cash equivalents	3,418	(7,313)
Cash and cash equivalents, beginning of period	45,267	43,948
Cash and Cash Equivalents, end of period	48,685	36,635
Non-cash Financing Activities:
Preferred stock conversion	$ 35,217	$ 0