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Derivatives and Balance Sheet Offsetting (Tables) | 12 Months Ended
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Dec. 31, 2020
Derivative [Line Items] |
Schedule of Fair Value Derivative Instruments | The following table presents the fair value of derivatives, as well as their classification on the Balance Sheet at December 31, 2020 and 2019:
| Asset Derivatives |  | Liability Derivatives
| 2020 |  | 2019 |  | 2020 |  | 2019
| Balance Sheet Location |  | Fair Value |  | Balance Sheet Location |  | Fair Value |  | Balance Sheet Location |  | Fair Value |  | Balance Sheet Location |  | Fair Value
|  |  | (in thousands) |  |
Derivatives designated as hedging instruments:
Interest rate collar | Other assets |  | $ | — |  |  | Other assets |  | $ | 14,727 |  |  | Other liabilities |  | $ | — |  |  | Other liabilities |  | $ | — |
Derivatives not designated as hedging instruments:
Interest rate lock commitments | Other assets |  | $ | 1,096 |  |  | Other assets |  | $ | — |  |  | Other liabilities |  | $ | — |  |  | Other liabilities |  | $ | — |
Interest rate forward loan sales contracts | Other assets |  | $ | — |  |  | Other assets |  | $ | — |  |  | Other liabilities |  | $ | 165 |  |  | Other liabilities |  | $ | — |
Interest rate swap contracts | Other assets |  | $ | 46,184 |  |  | Other assets |  | $ | 19,144 |  |  | Other liabilities |  | $ | 46,637 |  |  | Other liabilities |  | $ | 19,145 |
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) | The table below presents the effect of cash flow hedge accounting on accumulated other comprehensive income for the years ended December 31, 2020 and 2019:
| Amount of Gain or (Loss) Recognized in Accumulated Other Comprehensive Income on Derivative |  | Location of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income |  | Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income
| Years Ended December 31, |  |  |  | Years Ended December 31,
| 2020 |  | 2019 |  |  |  | 2020 |  | 2019
| (in thousands)
Interest rate collar | $ | 26,074 |  |  | $ | 15,322 |  |  | Interest income |  | $ | 8,418 |  |  | $ | 595 |
Derivative Instruments not designated as hedging, Gain (Loss) | The following table summarizes the types of derivatives not designated as hedging instruments and the gains (losses) recorded during the years ended December 31, 2020, 2019 and 2018:
|  | Years ended December 31,
|  | 2020 |  | 2019 |  | 2018
|  | (in thousands)
Interest rate lock commitments |  | $ | 1,096 |  |  | $ | — |  |  | $ | — |
Interest rate forward loan sales contracts |  | (165) |  |  | — |  |  | — |
Interest rate swap contracts |  | (452) |  |  | (1) |  |  | 8 |
Total derivative gains (losses) |  | $ | 479 |  |  | $ | (1) |  |  | $ | 8 |
Balance Sheet Offsetting | The following tables show the gross interest rate swap contracts, collar agreements and repurchase agreements in the Consolidated Balance Sheets and the respective collateral received or pledged in the form of cash or other financial instruments. The collateral amounts in these tables are limited to the outstanding balances of the related asset or liability. Therefore, instances of overcollateralization are not shown.
| Gross Amounts of Recognized Assets/Liabilities |  | Gross Amounts Offset in the Consolidated Balance Sheets |  | Net Amounts of Assets/Liabilities Presented in the Consolidated Balance Sheets |  |  |  | Gross Amounts Not Offset in the Consolidated Balance Sheets
|  |  |  |  |  | Collateral Pledged/Received |  | Net Amount
December 31, 2020 | (in thousands)
Assets |  |  |  |  |  |  |  |  |  |  |
Interest rate swap contracts | $ | 46,184 |  |  | $ | — |  |  | $ | 46,184 |  |  |  |  | $ | — |  |  | $ | 46,184 |
Liabilities |  |  |  |  |  |  |  |  |  |  |
Interest rate swap contracts | $ | 46,637 |  |  | $ | — |  |  | $ | 46,637 |  |  |  |  | $ | (46,637) |  |  | $ | — |
Repurchase agreements | $ | 73,859 |  |  | $ | — |  |  | $ | 73,859 |  |  |  |  | $ | (73,859) |  |  | $ | — |
December 31, 2019 |  |  |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |  |  |
Interest rate swap contracts | $ | 19,144 |  |  | $ | — |  |  | $ | 19,144 |  |  |  |  | $ | — |  |  | $ | 19,144 |
Interest rate collar | $ | 14,727 |  |  | $ | — |  |  | $ | 14,727 |  |  |  |  | $ | (14,727) |  |  | $ | — |
Liabilities |  |  |  |  |  |  |  |  |  |  |
Interest rate swap contracts | $ | 19,145 |  |  | $ | — |  |  | $ | 19,145 |  |  |  |  | $ | (19,145) |  |  | $ | — |
Repurchase agreements | $ | 64,437 |  |  | $ | — |  |  | $ | 64,437 |  |  |  |  | $ | (64,437) |  |  | $ | — |
Available-for-sale Securities |
Derivative [Line Items] |
Schedule of Financial Instruments Owned and Pledged as Collateral | The following table presents the class of collateral pledged for repurchase agreements as well as the remaining contractual maturity of the repurchase agreements:
|  | Remaining contractual maturity of the agreements
|  | Overnight and continuous |  | Up to 30 days |  | 30 - 90 days |  | Greater than 90 days |  | Total
December 31, 2020 |  | (in thousands)
Class of collateral pledged for repurchase agreements |  |  |  |  |  |  |  |  |  |
U.S. government agency and government-sponsored enterprise mortgage-backed securities and collateralized mortgage obligations |  | $ | 73,859 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 73,859 |
Gross amount of recognized liabilities for repurchase agreements |  | 73,859 |
Amounts related to agreements not included in offsetting disclosure |  | $ | — |

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