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EMPLOYEE BENEFIT PLANS - Funded status of Retirement Income Plan (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
CHANGE IN PLAN ASSETS: |  |  |
Funded status at end of year | $ 0 | $ (51) |
Retirement Income Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
ACCUMULATED BENEFIT OBLIGATION, END OF YEAR | 6,379 | 6,083 |
CHANGE IN PROJECTED BENEFIT OBLIGATION: |  |  |
Benefit obligation at beginning of year | 6,083 | 5,703 |
Service cost | 0 | 0 | $ 0
Interest cost | 266 | 274 | 259
Actuarial loss (gain) | 273 | 342 |
Benefits paid | (243) | (236) |
Projected benefit obligation at end of year | 6,379 | 6,083 | 5,703
CHANGE IN PLAN ASSETS: |  |  |
Fair value of plan assets at beginning of year | 6,032 | 5,813 |
Actual return on plan assets | 933 | 275 |
Employer contributions | 0 | 180 |
Benefits paid | (243) | (236) |
Fair value of plan assets at end of year | 6,722 | 6,032 | 5,813
Funded status at end of year | 343 | (51) |
AMOUNTS RECOGNIZED IN THE CONSOLIDATED BALANCE SHEETS CONSIST OF: |  |  |
Noncurrent assets | 343 | 0 |
Current liabilities | 0 | 0 |
Noncurrent liabilities | 0 | (51) |
Amounts recognized in balance sheet, Total | 343 | (51) |
AMOUNTS (PRE-TAX) RECOGNIZED IN ACCUMULATED OTHER COMPREHENSIVE LOSS CONSIST OF: |  |  |
Net loss | 2,997 | 3,335 |
Prior service cost (credit) | 0 | 0 |
Net transition obligation (asset) | 0 | 0 | $ 0
Amounts recognized in other comprehensive income before tax, Total | $ 2,997 | $ 3,335 |

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- Definition Amount, before tax, of accumulated other comprehensive income (loss) for transition asset (obligation) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (k) -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669646-108580 + Details
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