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Restructuring, Repositioning, and Efficiency (Details) - 2019 Business Optimization - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total restructuring, repositioning, and efficiency charges | $ (81) | $ 7,842 | $ (78) | $ 38,662
Personnel expense |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total restructuring, repositioning, and efficiency charges | 0 | 1,182 | 89 | 10,244
Legal and professional fees |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total restructuring, repositioning, and efficiency charges | 2 | 6,488 | 16 | 15,025
Net occupancy expense |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total restructuring, repositioning, and efficiency charges | 0 | (128) | 2 | 761
Other |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total restructuring, repositioning, and efficiency charges | $ (83) | $ 300 | $ (185) | $ 12,632

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