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Composition of Certain Financial Statement Captions (Accrued Liabilities) (Details) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013
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Items Included in Consolidated Statement of Financial Condition [Abstract] |  |
Accrued employee compensation | $ 40,497 | $ 69,256
Accrued employee benefits and other personnel | 6,380 | 9,647
Accrued consulting, outsourcing and professional fees | 23,006 | 19,311
Accrued sub-advisory, distribution and other asset management fees | 28,301 | 25,018
Accrued income taxes | 8,643 | 0
Accrued dividend payable | 0 | 37,314
Other accrued liabilities | 31,195 | 27,577
Total accrued liabilities | $ 138,022 | $ 188,123

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