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Business Combinations - Schedule of Finite-Lived and Indefinite-Lived Intangible Assets (Details) - RidgeWorth $ in Thousands | Jun. 01, 2017 USD ($)
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Business Acquisition [Line Items] |
Finite-lived intangible assets acquired | $ 267,000
Indefinite lived intangibles acquired | 8,700
Intangible assets | 275,700
Mutual fund investment contracts |
Business Acquisition [Line Items] |
Finite-lived intangible assets acquired | $ 189,200
Weighted Average of Useful Life | 16 years
Institutional and retail separate account investment contracts |
Business Acquisition [Line Items] |
Finite-lived intangible assets acquired | $ 77,000
Weighted Average of Useful Life | 10 years 4 months 24 days
Trade names |
Business Acquisition [Line Items] |
Finite-lived intangible assets acquired | $ 800
Weighted Average of Useful Life | 10 years

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