SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) |
12 Months Ended |
---|---|
Dec. 31, 2017
segment
| |
Accounting Policies [Abstract] | |
Number of days until which automobile loans accrue, after which they are charged off | 120 days |
Minimum number of days past due for loans excluding automobile loans on which interest is generally not accrued | 90 days |
Threshold percentage of amortization of net actuarial gain or loss in net periodic benefit cost over the average remaining service period of active participants in the Plans | 10.00% |
Number of reportable segments (segment) | 1 |
Number of operating segments (segment) | 1 |