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Subordinated Debentures (Tables) | 12 Months Ended
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Dec. 31, 2018
Debt Instruments [Abstract] |
Summary of Subordinated Debentures | The Company’s subordinated debentures are reflected in the table below. The amounts include fair value adjustments from acquisitions.
| December 31, 2018 |  | Rate Structure |  | Maturity Date
(Dollars in thousands) | Balance |  | Rate |  |
Subordinated debentures owed to trust subsidiaries |  |  |  |  |  |  |
First Company Statutory Trust 2001 | $ | 3,332 |  |  | 5.827 | % |  | 3 month LIBOR plus 3.30% |  | 07/31/2031
First Company Statutory Trust 2003 | 2,452 |  |  | 6.072 | % |  | 3 month LIBOR plus 3.25% |  | 03/26/2033
Glacier Capital Trust II | 46,393 |  |  | 5.186 | % |  | 3 month LIBOR plus 2.75% |  | 04/07/2034
Citizens (ID) Statutory Trust I | 5,155 |  |  | 5.438 | % |  | 3 month LIBOR plus 2.65% |  | 06/17/2034
Glacier Capital Trust III | 36,083 |  |  | 3.726 | % |  | 3 month LIBOR plus 1.29% |  | 04/07/2036
Glacier Capital Trust IV | 30,928 |  |  | 4.358 | % |  | 3 month LIBOR plus 1.57% |  | 09/15/2036
Bank of the San Juans Bancorporation Trust I | 1,935 |  |  | 4.558 | % |  | 3 month LIBOR plus 1.82% |  | 03/01/2037
Total subordinated debentures owed to trust subsidiaries | 126,278 |  |  |  |  |  |  |
Tier 2 subordinated debentures | 7,773 |  |  | 6.625 | % |  | Fixed |  | 10/01/2025
Total subordinated debentures | $ | 134,051 |  |  |  |  |  |  |

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