ACQUISITIONS - Sterling (Details) - USD ($) $ in Thousands |
Nov. 10, 2016 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|---|---|---|---|
| Business Acquisition [Line Items] | |||
| Goodwill | $ 48,836 | $ 46,519 | |
| Intangibles | $ 2,300 | ||
| Sterling | |||
| Business Acquisition [Line Items] | |||
| Total Purchase consideration | 400,000 | ||
| Consideration paid in cash | 5,200 | ||
| Goodwill | 2,300 | ||
| Intangibles | $ 2,300 | ||
| Amortization period | 20 years |