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Income Taxes - Unrecognized Tax Benefit Activity (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Jan. 02, 2016
Jan. 03, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Beginning Balance $ 184 $ 184 $ 259
Increases related to current year tax positions 0 0 0
Additions for tax positions in prior years 0 0 0
Reductions for tax positions in prior years 0 0 0
Reductions due to lapse of applicable statute of limitations 0 0 (75)
Settlements 0 0 0
Ending Balance $ 184 $ 184 $ 184