Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015
Cash Flows from Operating Activities:
Net income	$ 20,570	$ 28,737
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation expense, intangible asset and other amortization	3,009	3,436
Stock-based compensation	6,658	6,433
Excess tax benefits from stock-based compensation	(164)	(1,328)
Amortization of deferred commissions	1,365	5,339
Payments of deferred commissions	(921)	(2,040)
Equity in earnings of equity method investments	(201)	(669)
Realized gain on sale of equity method investment	(2,883)	0
Realized and unrealized losses (gains) on trading securities, net	260	(609)
Sales (purchases) of trading securities, net	11,122	8,131
Deferred taxes, net	7,190	636
Changes in operating assets and liabilities:
Accounts receivable, net and other assets	576	4,665
Accrued compensation and benefits, accounts payable, accrued liabilities and other liabilities	(25,430)	(15,104)
Net cash provided by operating activities	51,945	1,554
Cash Flows from Investing Activities:
Capital expenditures	(1,093)	(2,978)
Proceeds from sale of equity method investment	8,621	0
Asset acquisitions and purchases of other investments	(759)	(1,601)
Cash acquired in business combination	0	89
Purchases of available-for-sale securities	(121)	(111)
Net cash provided by (used in) investing activities	6,751	(4,601)
Cash Flows from Financing Activities:
Dividends paid	(7,638)	(8,167)
Repurchases of common shares	(61,809)	(28,000)
Proceeds from exercise of stock options	400	61
Taxes paid related to net share settlement of restricted stock units	(1,332)	(4,841)
Excess tax benefits from stock-based compensation	164	1,328
Contributions of noncontrolling interests, net	1,537	34,237
Net cash provided by (used in) financing activities	91,590	(4,551)
Net increase (decrease) in cash and cash equivalents	150,286	(7,598)
Cash and cash equivalents, beginning of period	97,384	203,304
Cash and Cash Equivalents, End of Period	247,670	195,706
Non-Cash Investing Activities:
Change in accrual for capital expenditures	45	(465)
Transfer from Investments	0	4,800
Non-Cash Financing Activities:
Decrease to noncontrolling interest due to deconsolidation of consolidated sponsored investment products	(52,874)	(1,569)
Dividends payable	3,473	4,048
Consolidated Sponsored Investment Products [Member]
Adjustments to reconcile net income to net cash provided by operating activities:
Realized and unrealized losses (gains) on trading securities, net	(4,218)	2,315
Sales (purchases) of trading securities, net	100,436	(39,993)
(Purchases) sales of securities sold short by consolidated sponsored investment products, net	(4,455)	2,040
Changes in operating assets and liabilities:
Cash pledged or on deposit of consolidated sponsored investment products	9,582	(3,489)
Other assets of consolidated sponsored investment products	(358)	(1,855)
Liabilities of consolidated sponsored investment products	187	4,909
Cash Flows from Investing Activities:
Change in cash and cash equivalents of consolidated sponsored investment products due to deconsolidation	103	0
Cash Flows from Financing Activities:
Borrowings of proceeds from short sales by consolidated sponsored investment products	0	831
Payments on borrowings by consolidated sponsored investment products	(3,415)
Consolidated Investment Product [Member]
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of discount on notes payable of consolidated investment product	3,719	0
Realized and unrealized losses (gains) on trading securities, net	(2,146)	0
Sales (purchases) of trading securities, net	(71,943)	0
Changes in operating assets and liabilities:
Other assets of consolidated sponsored investment products	(227)	0
Liabilities of consolidated investment product, net	217	0
Cash Flows from Financing Activities:
Repayment of debt of consolidated investment product	(152,597)	0
Proceeds from issuance of notes payable by consolidated investment product	$ 316,280	$ 0

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The cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of cash inflow (outflow) from sales and purchases of trading securities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of cash inflow (outflow) from (to) a noncontrolling interest. Excludes dividends paid to the noncontrolling interest.

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The net cash inflow or outflow from cash and cash items that are not available for withdrawal or usage.

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-Publisher FASB
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The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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The cash outflow to settle a bank borrowing during the year.

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The cash outflow for a borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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Value of investments transferred from the entity's investments in noncash transactions.

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Change in accruals or liabilities for capital expenditures.

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Dividends accrued but not yet paid.

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Non Cash Financing Activities [Abstract]

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Noncash Investing Activities [Abstract]

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Payments to acquire assets and other investments.

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No definition available.

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