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Derivatives and Balance Sheet Offsetting - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Balance Sheet Offsetting [Line Items] |  |
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net | $ 10,400 |
Gain on termination of interest rate collar | 34,400 |
Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement | 73,859 |
Commitments To Originate Loans Held For Sale |  |
Balance Sheet Offsetting [Line Items] |  |
Commitments and Contingencies | 31,900 |
Forward sales contracts |  |
Balance Sheet Offsetting [Line Items] |  |
Commitments and Contingencies | 26,500 |
Not Designated as Hedging Instrument | Interest Rate Contracts |  |
Balance Sheet Offsetting [Line Items] |  |
Derivative, Notional Amount | 597,900 | $ 428,600
Not Designated as Hedging Instrument | Interest Rate Contracts | Other Assets |  |
Balance Sheet Offsetting [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | 46,184 | 19,144
Not Designated as Hedging Instrument | Interest Rate Contracts | Other Assets | Interest Rate Lock Commitments |  |
Balance Sheet Offsetting [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | 1,096 | 0
Not Designated as Hedging Instrument | Interest Rate Contracts | Other Assets | Forward sales contracts |  |
Balance Sheet Offsetting [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | 0 | 0
Not Designated as Hedging Instrument | Interest Rate Contracts | Other Liabilities |  |
Balance Sheet Offsetting [Line Items] |  |
Derivative Liability, Fair Value, Gross Liability | 46,637 | 19,145
Not Designated as Hedging Instrument | Interest Rate Contracts | Other Liabilities | Interest Rate Lock Commitments |  |
Balance Sheet Offsetting [Line Items] |  |
Derivative Liability, Fair Value, Gross Liability | 0 | 0
Not Designated as Hedging Instrument | Interest Rate Contracts | Other Liabilities | Forward sales contracts |  |
Balance Sheet Offsetting [Line Items] |  |
Derivative Liability, Fair Value, Gross Liability | 165 | 0
Designated as Hedging Instrument | Interest rate collar |  |
Balance Sheet Offsetting [Line Items] |  |
Derivative, Notional Amount | 500,000 |
Designated as Hedging Instrument | Interest rate collar | Other Assets |  |
Balance Sheet Offsetting [Line Items] |  |
Derivative Asset, Fair Value, Gross Asset | 0 | 14,727
Designated as Hedging Instrument | Interest rate collar | Other Liabilities |  |
Balance Sheet Offsetting [Line Items] |  |
Derivative Liability, Fair Value, Gross Liability | $ 0 | $ 0

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- Definition Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.25) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a),19) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.17) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 + Details
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