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Consolidated Statement of Changes in Shareholders Equity (Parenthetical) - $ / shares
3 Months Ended 6 Months Ended
Jun. 27, 2015
Jun. 28, 2014
Jun. 27, 2015
Jun. 28, 2014
Dividends per common share $ 0.07 $ 0.06 $ 0.14 $ 0.12