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Restructuring, Repositioning, and Efficiency (Details) - 2019 Business Optimization - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
Restructuring Cost and Reserve [Line Items] |  |
Total restructuring and repositioning charges | $ (37) | $ 12,152
Employee compensation, incentives and benefits |  |
Restructuring Cost and Reserve [Line Items] |  |
Total restructuring and repositioning charges | 57 | 6,505
Professional fees |  |
Restructuring Cost and Reserve [Line Items] |  |
Total restructuring and repositioning charges | 7 | 4,295
Occupancy |  |
Restructuring Cost and Reserve [Line Items] |  |
Total restructuring and repositioning charges | 2 | 817
Other |  |
Restructuring Cost and Reserve [Line Items] |  |
Total restructuring and repositioning charges | $ (103) | $ 535

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