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Goodwill and Other Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Unamortizable intangible assets: |  |
Gross Carrying Amount | $ 124,222 | $ 125,138
Amortizable intangible assets: |  |
Gross Carrying Amount | 2,800,228 | 2,612,936
Accumulated Amortization | (1,556,537) | (1,358,528)
Gross Carrying Amount, Total intangible assets | 2,924,450 | 2,738,074
Management contracts |  |
Unamortizable intangible assets: |  |
Gross Carrying Amount | 67,422 | 62,338
Trademark |  |
Unamortizable intangible assets: |  |
Gross Carrying Amount | 56,800 | 56,800
Trade name |  |
Unamortizable intangible assets: |  |
Gross Carrying Amount | 0 | 6,000
Customer relationships |  |
Amortizable intangible assets: |  |
Gross Carrying Amount | 880,104 | 857,772
Accumulated Amortization | (603,866) | (519,162)
Mortgage servicing rights |  |
Amortizable intangible assets: |  |
Gross Carrying Amount | 927,525 | 803,419
Accumulated Amortization | (370,634) | (319,927)
Trademarks/Trade names |  |
Amortizable intangible assets: |  |
Gross Carrying Amount | 354,060 | 345,834
Accumulated Amortization | (111,595) | (92,730)
Management contracts |  |
Amortizable intangible assets: |  |
Gross Carrying Amount | 152,312 | 142,767
Accumulated Amortization | (145,612) | (138,891)
Covenant not to compete |  |
Amortizable intangible assets: |  |
Gross Carrying Amount | 73,750 | 73,750
Accumulated Amortization | (73,750) | (73,750)
Other |  |
Amortizable intangible assets: |  |
Gross Carrying Amount | 412,477 | 389,394
Accumulated Amortization | $ (251,080) | $ (214,068)

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