GOODWILL AND OTHER INTANGIBLE ASSETS GOODWILL AND OTHER INTANGIBLE ASSETS-Schedule of Goodwill (Details) - USD ($) $ in Thousands |
9 Months Ended | 12 Months Ended |
|---|---|---|
Sep. 30, 2016 |
Dec. 31, 2015 |
|
| Goodwill [Roll Forward] | ||
| Balance at beginning of year | $ 204,084 | $ 137,739 |
| Goodwill | 0 | 66,345 |
| Balance at end of period | $ 204,084 | $ 204,084 |