OFF-BALANCE SHEET ARRANGEMENTS, COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | |||
| Commitments to make loans, period | 120 days | ||
| Fixed rate loan commitments, weighted average maturity | 1 year 11 months 19 days | ||
| Rent expense | $ 2.7 | $ 2.6 | $ 2.0 |
| Minimum | |||
| Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | |||
| Fixed rate loan commitments, interest rate | 1.60% | ||
| Maximum | |||
| Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | |||
| Fixed rate loan commitments, interest rate | 7.50% | ||
| Weighted Average | |||
| Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] | |||
| Fixed rate loan commitments, interest rate | 4.65% | ||