Consolidation - Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Variable Interest Entity [Line Items]
Total cash and cash equivalents	$ 247,670	$ 97,384	$ 195,706	$ 203,304
Total investments	567,018	579,558
All other assets	159,309	172,434
Total liabilities	(481,752)	(276,408)
Redeemable noncontrolling interests	(27,145)	(73,864)	$ (55,577)	$ (23,071)
Consolidated Sponsored Investment Products [Member]
Variable Interest Entity [Line Items]
Total investments	130,396	323,335
All other assets	2,594	8,549
Total liabilities	(3,073)	(15,387)
Consolidated Investment Product [Member]
Variable Interest Entity [Line Items]
Total cash equivalents	91,044	8,297
Total investments	344,886	199,485
All other assets	6,078	1,467
Debt	0	(152,597)
Notes payable	(319,716)	0
Securities purchased payable and other liabilities	(94,790)	(18,487)
The Company’s net interests in consolidated sponsored investment products	27,502	38,165
Consolidated Sponsored Investment Products - VOEs [Member] \| Consolidated Sponsored Investment Products [Member]
Variable Interest Entity [Line Items]
Total cash and cash equivalents	1,209	11,408
Total investments	91,669	291,247
All other assets	2,244	8,281
Total liabilities	(2,753)	(14,948)
Redeemable noncontrolling interests	(7,825)	(61,236)
The Company’s net interests in consolidated sponsored investment products	84,544	234,752
Consolidated Sponsored Investment Product - VIE [Member] \| Consolidated Sponsored Investment Products [Member]
Variable Interest Entity [Line Items]
Total cash and cash equivalents	891	458
Total investments	38,727	32,088
All other assets	350	268
Total liabilities	(320)	(439)
Redeemable noncontrolling interests	(19,320)	(12,628)
The Company’s net interests in consolidated sponsored investment products	$ 20,328	$ 19,747

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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