LOANS - Allowance for loan losses and recorded investment (Details) - USD ($) |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Changes in allowance for loan losses : | |||||||||||
| Beginning balance | $ 15,988,000 | $ 12,300,000 | $ 15,988,000 | $ 12,300,000 | $ 23,672,000 | ||||||
| Provision for loan losses | $ 2,445,000 | $ 1,392,000 | $ 629,000 | 1,125,000 | $ 1,052,000 | $ 6,699,000 | $ 2,379,000 | 997,000 | 5,591,000 | 11,127,000 | 92,000 |
| Charge-offs | (7,736,000) | (9,657,000) | (12,096,000) | ||||||||
| Recoveries | 1,019,000 | 2,218,000 | 632,000 | ||||||||
| Net loan charge-offs | (6,717,000) | (7,439,000) | (11,464,000) | ||||||||
| Ending balance | 14,862,000 | 15,988,000 | 14,862,000 | 15,988,000 | 12,300,000 | ||||||
| Non-PCI loans | |||||||||||
| Changes in allowance for loan losses : | |||||||||||
| Beginning balance | 14,093,000 | 10,503,000 | 14,093,000 | 10,503,000 | 11,985,000 | ||||||
| Provision for loan losses | 6,425,000 | 11,061,000 | 300,000 | ||||||||
| Charge-offs | (7,668,000) | (9,565,000) | (2,271,000) | ||||||||
| Recoveries | 894,000 | 2,094,000 | 489,000 | ||||||||
| Net loan charge-offs | (6,774,000) | (7,471,000) | (1,782,000) | ||||||||
| Ending balance | 13,744,000 | 14,093,000 | 13,744,000 | 14,093,000 | 10,503,000 | ||||||
| Non-PCI loans | Nonpeforming, one borrower | |||||||||||
| Changes in allowance for loan losses : | |||||||||||
| Charge-offs | (1,600,000) | ||||||||||
| Non-PCI loans | Nonpeforming, single credit relationship borrower | |||||||||||
| Changes in allowance for loan losses : | |||||||||||
| Charge-offs | (530,000) | ||||||||||
| Non-PCI loans | Nonperforming, group of nonperforming loans | |||||||||||
| Changes in allowance for loan losses : | |||||||||||
| Charge-offs | (7,500,000) | ||||||||||
| Non-PCI loans | Nonperforming financial instruments second single borrower | |||||||||||
| Changes in allowance for loan losses : | |||||||||||
| Charge-offs | (1,400,000) | ||||||||||
| PCI loans | |||||||||||
| Changes in allowance for loan losses : | |||||||||||
| Beginning balance | $ 1,895,000 | $ 1,797,000 | 1,895,000 | 1,797,000 | 11,687,000 | ||||||
| Provision for loan losses | (834,000) | 66,000 | (208,000) | ||||||||
| Charge-offs | (68,000) | (92,000) | (9,825,000) | ||||||||
| Recoveries | 125,000 | 124,000 | 143,000 | ||||||||
| Net loan charge-offs | 57,000 | 32,000 | (9,682,000) | ||||||||
| Ending balance | $ 1,118,000 | $ 1,895,000 | $ 1,118,000 | $ 1,895,000 | $ 1,797,000 | ||||||