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Borrowings (Tables) | 12 Months Ended
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Dec. 31, 2017
Debt Disclosure [Abstract] |
Schedule of Subordinated Debentures | The following is a summary of the contractual terms of the subordinated debentures due to the Trusts as of December 31, 2017:
(in thousands) |
Subordinated debentures due to NorCal Community Bancorp Trust I on October 7, 2033 with interest payable quarterly, based on 3-month LIBOR plus 3.05%, repricing quarterly (4.41% as of December 31, 2017), redeemable, in whole or in part, on any interest payment date | $ | 4,124 |
Subordinated debentures due to NorCal Community Bancorp Trust II on March 15, 2036 with interest payable quarterly, based on 3-month LIBOR plus 1.40%, repricing quarterly (2.99% as of December 31, 2017), redeemable, in whole or in part, on any interest payment date | 4,124 |
Total | $ | 8,248 |
Schedule of Borrowings | Borrowings at December 31, 2017 and 2016 are summarized as follows:
| 2017 |  | 2016 |
(dollars in thousands) | Carrying Value |  | Average Balance |  | Average Rate |  |  | Carrying Value |  | Average Balance |  | Average Rate |  |
FHLB overnight borrowings | $ | — |  | $ | 1 |  | 1.75 | % |  | $ | — |  | $ | 5,383 |  | 0.42 | % |
FHLB fixed-rate advances | $ | — |  | $ | — |  | — | % |  | $ | — |  | $ | 6,803 |  | 6.59 | % | 1
Subordinated debentures | $ | 5,739 |  | $ | 5,664 |  | 7.65 | % |  | $ | 5,586 |  | $ | 5,493 |  | 7.80 | % |
1 Average rate includes the impact of the $312 thousand prepayment fee in 2016 discussed above.

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