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Derivative and Balance Sheet Offsetting - Fair value of derivatives & classifications table (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Designated as Hedging Instrument | Other Assets | Interest rate collar |  |
Derivative [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | $ 0 | $ 14,727
Designated as Hedging Instrument | Other Liabilities | Interest rate collar |  |
Derivative [Line Items] |  |
Derivative Liability, Fair Value, Gross Liability | 0 | 0
Not Designated as Hedging Instrument | Other Assets | Interest Rate Contracts |  |
Derivative [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | 46,184 | 19,144
Not Designated as Hedging Instrument | Other Assets | Interest Rate Contracts | Interest Rate Lock Commitments |  |
Derivative [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | 1,096 | 0
Not Designated as Hedging Instrument | Other Assets | Interest Rate Contracts | Interest Rate Swap |  |
Derivative [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | 46,184 | 19,144
Not Designated as Hedging Instrument | Other Assets | Interest Rate Contracts | Forward sales contracts |  |
Derivative [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | 0 | 0
Not Designated as Hedging Instrument | Other Liabilities | Interest Rate Contracts |  |
Derivative [Line Items] |  |
Derivative Liability, Fair Value, Gross Liability | 46,637 | 19,145
Not Designated as Hedging Instrument | Other Liabilities | Interest Rate Contracts | Interest Rate Lock Commitments |  |
Derivative [Line Items] |  |
Derivative Liability, Fair Value, Gross Liability | 0 | 0
Not Designated as Hedging Instrument | Other Liabilities | Interest Rate Contracts | Interest Rate Swap |  |
Derivative [Line Items] |  |
Derivative Liability, Fair Value, Gross Liability | 46,637 | 19,145
Not Designated as Hedging Instrument | Other Liabilities | Interest Rate Contracts | Forward sales contracts |  |
Derivative [Line Items] |  |
Derivative Liability, Fair Value, Gross Liability | $ 165 | $ 0

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- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4D -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=121570589&loc=SL51823488-111719 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959 + Details
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