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EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 26, 2015 | Dec. 27, 2014
Defined Benefit Plan Disclosure [Line Items] |  |  |
Deferral period | 3 years |  |
Maximum annual contributions per employee, percent | 10.00% |  |
Period of highest consecutive years of compensation | 5 years |  |
Costs associated with deferred compensation plan and executive supplemental life insurance retirement plans | $ 2,200 | $ 2,600 | $ 3,300
Life insurance policies | $ 29,456 | 27,554 |
Sensitivity of expected rate of return on plan assets, percent change | 0.50% |  |
Sensitivity of change in expected rate of return, annual pension expense amount | $ 1,300 |  |
Employer contributions | 4,000 |  |
Expected employer contributions in 2017 | 4,000 |  |
Accumulated benefit obligation | 1,200 | 900 |
Costs associated with employee savings plan | $ 6,200 | $ 5,300 | $ 4,900
Equity Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Weighted average target plan asset allocations | 45.00% |  |
Fixed Income Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Weighted average target plan asset allocations | 31.50% |  |
Other Securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Weighted average target plan asset allocations | 23.50% |  |

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- Definition Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6812-107765 + Details
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