MERGERS AND ACQUISITIONS - Acquisition Related Costs (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Business Acquisition [Line Items] | |||
| Acquisition related costs | $ 0 | $ 722 | $ 310 |
| Professional fees | |||
| Business Acquisition [Line Items] | |||
| Acquisition related costs | 0 | 471 | 183 |
| Marketing | |||
| Business Acquisition [Line Items] | |||
| Acquisition related costs | 0 | 29 | 4 |
| Printing, postage and supplies | |||
| Business Acquisition [Line Items] | |||
| Acquisition related costs | 0 | 71 | 9 |
| Equipment depreciation and maintenance | |||
| Business Acquisition [Line Items] | |||
| Acquisition related costs | 0 | 0 | 26 |
| Travel and entertainment | |||
| Business Acquisition [Line Items] | |||
| Acquisition related costs | 0 | 50 | 88 |
| Data processing and communications | |||
| Business Acquisition [Line Items] | |||
| Acquisition related costs | 0 | 76 | 0 |
| Other operating expense | |||
| Business Acquisition [Line Items] | |||
| Acquisition related costs | $ 0 | $ 25 | $ 0 |