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EMPLOYEE RETIREMENT PLANS (Details 2) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Change in projected benefit obligation |  |  |
Service cost | $ 563 | $ 1,638 | $ 1,636
Interest cost | 2,207 | 2,449 | 2,665
Change in plan assets |  |  |
Fair value of plan assets, beginning of year | 32,278 |  |
Benefits paid |  | (1,900) |
Fair value of plan assets, end of year | 38,369 | 32,278 |
Amounts recognized in the consolidated balance sheets consist of: |  |  |
Long-term pension liability | (27,766) | (27,801) |
Amounts recognized in accumulated other comprehensive loss consist of: |  |  |
Net amount recognized | 13,673 | 11,080 | 12,776
Defined Benefit Pension Plan [Member] |  |  |
Change in projected benefit obligation |  |  |
Projected benefit obligation, beginning of year | 45,079 | 48,677 |
Service cost | 378 | 1,328 |
Interest cost | 1,616 | 1,833 |
Plan curtailment | 0 | (5,098) |
Actuarial loss | 4,423 | 2,282 |
Benefits paid | (2,121) | (3,943) |
Projected benefit obligation, end of year | 49,375 | 45,079 | 48,677
Change in plan assets |  |  |
Fair value of plan assets, beginning of year | 32,278 | 32,345 |
Actual return on plan assets | 4,590 | 1,791 |
Administrative expenses | (378) | (315) |
Contributions | 4,000 | 2,400 |
Benefits paid | (2,121) | (3,943) |
Fair value of plan assets, end of year | 38,369 | 32,278 | 32,345
Funded status of plan | (11,006) | (12,801) |
Amounts recognized in the consolidated balance sheets consist of: |  |  |
Accrued liabilities - other | 0 | 0 |
Long-term pension liability | (11,006) | (12,801) |
Net amount recognized | (11,006) | (12,801) |
Amounts recognized in accumulated other comprehensive loss consist of: |  |  |
Accumulated loss, net of income tax benefit of $5,904, $5,373, $2,166 and $1,802, respectively | 9,916 | 8,403 |
Prior service cost, net of income tax liability of $0, $0, ($75) and ($91), respectively | 0 | 0 |
Net amount recognized | 9,916 | 8,403 |
Supplemental Pension Plan [Member] |  |  |
Change in projected benefit obligation |  |  |
Projected benefit obligation, beginning of year | 15,409 | 14,261 |
Service cost | 185 | 310 |
Interest cost | 591 | 616 |
Plan curtailment | 0 | (919) |
Actuarial loss | 1,519 | 1,527 |
Benefits paid | (528) | (386) |
Projected benefit obligation, end of year | 17,176 | 15,409 | 14,261
Change in plan assets |  |  |
Fair value of plan assets, beginning of year | 0 | 0 |
Actual return on plan assets | 0 | 0 |
Administrative expenses | 0 | 0 |
Contributions | 528 | 386 |
Benefits paid | (528) | (386) |
Fair value of plan assets, end of year | 0 | 0 | $ 0
Funded status of plan | (17,176) | (15,409) |
Amounts recognized in the consolidated balance sheets consist of: |  |  |
Accrued liabilities - other | (416) | (409) |
Long-term pension liability | (16,760) | (15,000) |
Net amount recognized | (17,176) | (15,409) |
Amounts recognized in accumulated other comprehensive loss consist of: |  |  |
Accumulated loss, net of income tax benefit of $5,904, $5,373, $2,166 and $1,802, respectively | 3,854 | 2,820 |
Prior service cost, net of income tax liability of $0, $0, ($75) and ($91), respectively | (97) | (143) |
Net amount recognized | $ 3,757 | $ 2,677 |

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- Definition Amount of liability, recognized in statement of financial position, for defined benefit pension plan. Excludes other postretirement benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(15)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(15)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Amount, after tax, of accumulated other comprehensive income (loss) for gain (loss) 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 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 Reference 2: 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 + Details
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