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Deposits (Tables) | 12 Months Ended
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Dec. 31, 2020
Deposits, by Component, Alternative [Abstract] |
Deposit Liabilities, Type | The following table presents the composition of deposits at December 31 and interest expense for the years ended December 31:
| 2020 |  | 2019 |  | 2018
(dollars in thousands) | Balance |  | Interest Expense |  | Balance |  | Interest Expense |  | Balance |  | Interest Expense
Noninterest-bearing demand | $ | 2,261,994 |  |  | $ | — |  |  | $ | 1,698,082 |  |  | $ | — |  |  | $ | 1,421,156 |  |  | $ | — |
Interest-bearing demand | 864,510 |  |  | 2,681 |  |  | 962,331 |  |  | 3,915 |  |  | 573,693 |  |  | 93 |
Money market | 1,937,063 |  |  | 11,645 |  |  | 1,949,811 |  |  | 30,236 |  |  | 1,482,065 |  |  | 20,018 |
Savings | 969,508 |  |  | 972 |  |  | 830,919 |  |  | 1,928 |  |  | 784,970 |  |  | 1,773 |
Certificates of deposit | 1,387,463 |  |  | 20,688 |  |  | 1,595,433 |  |  | 26,947 |  |  | 1,412,038 |  |  | 18,972 |
Total | $ | 7,420,538 |  |  | $ | 35,986 |  |  | $ | 7,036,576 |  |  | $ | 63,026 |  |  | $ | 5,673,922 |  |  | $ | 40,856 |
Time Deposit Maturities | The following table indicates the scheduled maturities of certificates of deposit at December 31, 2020:
(dollars in thousands) | Amount
2021 | $ | 1,182,938 |
2022 | 122,596 |
2023 | 27,825 |
2024 | 17,415 |
2025 | 33,149 |
Thereafter | 3,540 |
Total | $ | 1,387,463 |

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- Definition Tabular disclosure of time deposit liability maturities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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