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Schedule II - Valuation and Qualifying Accounts (Details) - Valuation Allowance of Deferred Tax Assets [Member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 28, 2014
Dec. 29, 2013
Balance at beginning of period $ 44,700 $ 34,484 $ 41,135
Increase $ 10,216
Decrease $ (19,107) $ (6,651)
Balance at end of period $ 25,593 $ 44,700 $ 34,484