GOODWILL AND INTANGIBLE ASSETS - Acquired Intangible Assets (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Acquired intangible assets | |||
| Accumulated amortization | $ (28,910) | $ (27,568) | |
| Purchased intangibles, net | 7,419 | 4,662 | |
| Aggregate amortization expense | 1,342 | 1,640 | $ 1,690 |
| Estimated amortization expense | |||
| 2017 | 1,244 | ||
| 2018 | 1,170 | ||
| 2019 | 991 | ||
| 2020 | 896 | ||
| 2021 | 789 | ||
| Core deposit intangibles | |||
| Acquired intangible assets | |||
| Purchased intangibles, gross | 34,135 | 30,036 | |
| Other customer relationship intangibles | |||
| Acquired intangible assets | |||
| Purchased intangibles, gross | $ 2,194 | $ 2,194 | |