Other Assets - Loans, Fees, Amortization and Carrying Value (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Intangible Assets
Unpaid principal amount of consumer loans serviced for others	$ 2,189,027	$ 2,344,899
Contractually specified fees, late charges, and ancillary fees	5,700	6,300	$ 7,000
Amortization of mortgage servicing rights	6,313	3,625	$ 3,800
Details of MSRs
Gross carrying amount	67,856	63,480
Less: accumulated amortization	57,125	50,812
Net carrying value	10,731	$ 12,668
MSRs
Estimated future amortization expenses for MSRs, next five years
2021	2,462
2022	1,879
2023	1,477
2024	1,188
2025	$ 971

Principal amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction. Continuing involvement includes, but is not limited to, servicing, recourse, and restrictions on transferor's interests in transferred financial assets.

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Amount of contractually specified servicing fee, late fee, and ancillary fee recognized as income for servicing asset and servicing liability.

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-Publisher FASB
-Name Accounting Standards Codification
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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

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