Transfers of Financial Assets (Loans sold) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Servicing Assets at Fair Value [Line Items]
Net gain on sale	$ 6,115	$ 4,424	$ 9,937
Residential Mortgage [Member]
Servicing Assets at Fair Value [Line Items]
Proceeds from sale	216,239	188,025	335,656
Net gain on sale	4,031	3,146	6,211
Ancillary Fee Income Generated by Servicing Financial Assets, Amount	1,614	1,544	2,629
Fair value option adjustment	470	(266)	1,097
Commercial Loan [Member]
Servicing Assets at Fair Value [Line Items]
Net gain on sale	700
Residential Mortgage Loans Servicing Retained [Member] \| Residential Mortgage [Member]
Servicing Assets at Fair Value [Line Items]
Proceeds from sale	$ 199,114	$ 166,909	$ 304,788

All amounts that are due to the servicer of a financial asset, excluding contractually specified servicing fees and late fees.

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-Publisher FASB
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-SubTopic 50
-Section 50
-Paragraph 2
-Subparagraph (c)
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Amount of addition (reduction) to the amount at which an asset could be incurred (settled) in a current transaction between willing parties.

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The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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The cash inflow from sales of loans that are secured with real estate mortgages and are held with the intention to resell in the near future.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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