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Certificates of Deposit (Tables) | 12 Months Ended
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Dec. 31, 2017
Banking and Thrift [Abstract] |
Certificates of deposit | The following table represents the breakdown of certificates of deposit at December 31, 2017 and 2016:
| December 31, 2017 |  | December 31, 2016
Certificates of deposit < $100,000 | $ | 284,066,000 |  |  | $ | 195,115,000 |
Certificates $100,000 to $250,000 | 232,759,000 |  |  | 240,904,000 |
Certificates $250,000 and over | 42,176,000 |  |  | 40,601,000 |
| $ | 559,001,000 |  |  | $ | 476,620,000 |
Maturities of certificates of deposit | At December 31, 2017, the scheduled maturities of certificates of deposit are as follows:
Year of Maturity | Less than $100,000 |  | $100,000 and Greater |  | All Certificates of Deposit
2018 | $ | 215,571,000 |  |  | $ | 177,745,000 |  |  | $ | 393,316,000 |
2019 | 26,401,000 |  |  | 27,164,000 |  |  | 53,565,000 |
2020 | 17,516,000 |  |  | 33,710,000 |  |  | 51,226,000 |
2021 | 13,137,000 |  |  | 17,060,000 |  |  | 30,197,000 |
2022 | 11,411,000 |  |  | 19,256,000 |  |  | 30,667,000 |
2023 and thereafter | 30,000 |  |  | — |  |  | 30,000 |
| $ | 284,066,000 |  |  | $ | 274,935,000 |  |  | $ | 559,001,000 |

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