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FAIR VALUE MEASUREMENTS - Schedule of AFS Sold (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 26, 2018 | Dec. 27, 2017 | Dec. 28, 2016
Available-for-sale securities: |  |  |  |
Gross proceeds from sales and redemptions |  | $ 2,144 | $ 2,223 | $ 938
Cost basis of sales and redemptions |  | 2,160 | 2,271 | 956
Gross realized gains included in net income |  | 2 | 1 | 2
Gross realized losses included in net income |  | (18) | (49) | (20)
Amounts reclassified out of accumulated other comprehensive loss | [1] | $ 16 | $ 47 | $ 19
[1] | Net of tax benefit of $0 for fiscal years ended December 26, 2018, December 27, 2017 and December 28, 2016.

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