OTHER ASSETS (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Defined Benefit Plan Disclosure [Line Items] | |||
| Cash surrender value of the COLI | $ 10,900 | $ 8,500 | |
| Increase (decrease) in cash surrender value | 500 | (100) | $ 200 |
| Proceeds from sale of marketable securities | 2,164 | 2,820 | 0 |
| Investments held in Rabbi Trust [Member] | |||
| Defined Benefit Plan Disclosure [Line Items] | |||
| Cost of investments | 1,000 | 2,900 | |
| Fair value of investments | 1,700 | 3,600 | |
| Unrealized gain on investments | 700 | 700 | |
| Proceeds from sale of marketable securities | 2,200 | 2,800 | |
| Supplemental Employee Retirement Plans [Member] | |||
| Defined Benefit Plan Disclosure [Line Items] | |||
| Benefit obligation | 16,900 | 15,576 | $ 14,205 |
| Value of assets earmarked for SERP use but not restricted to that use | 12,700 | 12,200 | |
| Proceeds from sale of marketable securities | $ 2,200 | $ 2,800 | |