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Stockholders' Equity (Dividends) (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Feb. 24, 2016
Dec. 27, 2015
Sep. 27, 2015
Jun. 28, 2015
Mar. 29, 2015
Dec. 27, 2015
Dec. 28, 2014
Dec. 31, 2013
Dividends Payable [Line Items]                
Common stock, dividends per share   $ 0.06 $ 0.06 $ 0.06 $ 0.06 $ 0.24    
Dividends, common stock, cash   $ 7,185 $ 7,333 $ 7,391 $ 7,423 $ 29,332    
Common stock, dividends, per share, declared           $ 0.24 $ 0.00 $ 0.00
Subsequent event [Member]                
Dividends Payable [Line Items]                
Common stock, dividends, per share, declared $ 0.07              
Dividends payable, date to be paid Mar. 10, 2016              
Dividends payable, date of record Feb. 29, 2016