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Income Taxes - Reconciliation to Federal Statutory Amount (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 02, 2016
Jan. 03, 2015
Jan. 04, 2014
Income Tax Disclosure [Abstract]      
Benefit from income taxes computed at the federal statutory tax rate $ (3,998) $ (4,746) $ (17,371)
Benefit from state income taxes, net of federal benefit (474) (623) (1,991)
Valuation allowance change 4,318 5,656 19,445
Nondeductible items 288 232 270
Benefit from allocation of income taxes to other comprehensive income (loss) 0 0 (8,726)
Other 19 (207) (640)
Provision for (benefit from) income taxes $ 153 $ 312 $ (9,013)