Acquisitions - Additional Information (Details) - USD ($)
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3 Months Ended |
12 Months Ended |
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Jul. 01, 2019 |
Sep. 30, 2019 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Sep. 21, 2018 |
| Acquisitions |
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| Contingent consideration liability |
$ 98,800,000
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$ 118,700,000
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$ 716,000
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$ 1,195,000
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| Goodwill |
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$ 404,750,000
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284,108,000
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284,108,000
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| Percentage of projected annual growth rate for non managed money revenue |
3.00%
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| Percentage of market price risk |
4.00%
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| Percentage of revenue volatility |
20.00%
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| Discount rate |
7.00%
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5.00%
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| Change in fair value of contingent consideration obligations |
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$ 19,886,000
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(37,000)
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(294,000)
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| Percentage of projected annual growth rate for non managed money revenue during earn out period |
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4.00%
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| Acquisition-related costs |
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$ 2,300,000
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400,000
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| Minimum |
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| Acquisitions |
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| Undiscounted earn out payments |
$ 119,000,000
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| Estimated undiscounted earn out payments |
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133,000,000
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| Maximum |
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| Acquisitions |
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| Undiscounted earn out payments |
$ 150,000,000
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| Estimated undiscounted earn out payments |
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150,000,000
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| USAA AMCO |
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| Acquisitions |
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| Percentage of outstanding common stock acquired |
100.00%
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| Total consideration |
$ 950,100,000
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| Payments to acquire business |
851,300,000
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| Payments to acquire business, restricted cash |
71,900,000
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| Contingent consideration liability |
98,800,000
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| Maximum aggregate contingent payment |
150,000,000
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| Maximum annual contingent payment |
$ 37,500,000
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| Period of time over which contingent payments will be made |
4 years
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| Contingent consideration threshold percentage |
80.00%
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| Annual revenue percentage requirement to achieve the maximum contingent payment |
100.00%
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| Goodwill |
$ 120,643,000
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$ 120,600,000
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| Post-closing adjustment period |
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1 year
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| Change in fair value of contingent consideration obligations |
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$ (19,900,000)
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| Acquisition-related costs |
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8,700,000
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0
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0
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| Harvest |
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| Acquisitions |
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| Equity interest to be acquired (as a percent) |
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100.00%
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| CEMP |
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| Acquisitions |
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| Change in fair value of contingent consideration obligations |
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$ 14,000
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37,000
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| Earnout period |
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4 years
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| Base and earn-out payments made |
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$ 6,000,000
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$ 6,000,000
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$ 4,400,000
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$ 2,700,000
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