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INCOME TAXES INCOME TAXES - Income Tax Reconciliation (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 25, 2015 | Sep. 25, 2015 | Jun. 26, 2015 | Mar. 27, 2015 | Dec. 26, 2014 | Sep. 26, 2014 | Jun. 27, 2014 | Mar. 28, 2014 | Dec. 25, 2015 | Dec. 26, 2014 | Dec. 27, 2013
Effective Income Tax Rate Reconciliation, Amount [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income tax expense based on statutory rate |  |  |  |  |  |  |  |  | $ 33,745 | $ 28,641 | $ 21,328
Increase (decrease) resulting from: |  |  |  |  |  |  |  |  |  |  |
State income taxes, net of federal benefit |  |  |  |  |  |  |  |  | 4,175 | 3,213 | 2,536
Tax credits, net |  |  |  |  |  |  |  |  | (14,483) | (18,564) | (10,790)
Non-deductible/non-taxable items |  |  |  |  |  |  |  |  | 2,456 | 1,983 | 2,124
Foreign taxes |  |  |  |  |  |  |  |  | (933) | 1,037 | 488
Other, net |  |  |  |  |  |  |  |  | 240 | (141) | 327
Income Tax Expense (Benefit) | $ 4,696 | $ 12,796 | $ 6,235 | $ 1,473 | $ 4,472 | $ 8,243 | $ 2,350 | $ 1,104 | $ 25,200 | $ 16,169 | $ 16,013
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation, Adjustments to Statutory Income Tax Rate [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income tax expense based on statutory rate |  |  |  |  |  |  |  |  | 35.00% | 35.00% | 35.00%
Increase (decrease) resulting from: |  |  |  |  |  |  |  |  |  |  |
State income taxes, net of federal benefit |  |  |  |  |  |  |  |  | 4.30% | 3.90% | 4.20%
Tax credits, net |  |  |  |  |  |  |  |  | (15.00%) | (22.60%) | (17.70%)
Non-deductible/non-taxable items |  |  |  |  |  |  |  |  | 2.50% | 2.40% | 3.50%
Foreign taxes |  |  |  |  |  |  |  |  | (1.00%) | 1.30% | 0.80%
Other, net |  |  |  |  |  |  |  |  | 0.30% | (0.20%) | 0.50%
Total taxes on income |  |  |  |  |  |  |  |  | 26.10% | 19.80% | 26.30%

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