Investment Securities (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2015	Dec. 31, 2014
Available for sale securities:
Amortized cost	$ 48,543	$ 48,543	$ 162,425
Unrealized gains	735	735	4,237
Unrealized losses	(6,376)	(6,376)	(5,392)
Fair value	42,902	42,902	161,270
Equity method securities	146,382	146,382
Trading securities:
Fair value	30,153	30,153	82,013
Total investment securities	219,437	219,437	243,283
Purchases of trading securities		300
Sales and maturities of trading securities		300
Transfers to equity method securities	160,200
Unrealized losses	2,100
Sponsored funds
Available for sale securities:
Amortized cost	48,043	48,043	160,675
Unrealized gains	412	412	2,177
Unrealized losses	(6,376)	(6,376)	(5,392)
Fair value	42,079	42,079	157,460
Equity method securities	143,438	143,438
Trading securities:
Fair value	30,045	30,045	81,913
Total investment securities	215,562	215,562	239,373
Sponsored privately offered funds
Available for sale securities:
Amortized cost	500	500	1,750
Unrealized gains	323	323	2,060
Fair value	823	823	3,810
Equity method securities	2,944	2,944
Trading securities:
Total investment securities	3,767	3,767	3,810
Mortgage-backed securities
Trading securities:
Fair value	22	22	28
Total investment securities	22	22	28
Corporate bonds
Trading securities:
Fair value	6	6
Total investment securities	6	6
Common Stock
Trading securities:
Fair value	80	80	72
Total investment securities	$ 80	$ 80	$ 72

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer.

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Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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The cash outflow to acquire securities classified as trading securities and held for investment purposes. Excludes payments for trading securities purchased and held principally for the purpose of selling them in the near term (thus held for only a short period of time).

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Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading.

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Payments for investments classified as available for sale to equity method securities

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