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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - ASU Update (Details) - USD ($) $ in Thousands | Mar. 28, 2018 | Dec. 28, 2017
--- | --- | ---
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
New accounting pronouncement | $ (1,574) |
Retained Earnings |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
New accounting pronouncement | $ (1,174) | $ 1,574
Other Noncurrent Liabilities |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
New accounting pronouncement |  | 1,769
Current Liabilities |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
New accounting pronouncement |  | 68
Accounts Receivable |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
New accounting pronouncement |  | $ 100

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