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Equity (Details) - USD ($)
shares in Millions
6 Months Ended
Jun. 30, 2016
Jul. 01, 2015
Equity, Class of Treasury Stock [Line Items]    
Stock repurchased during period, value $ 5,389,000  
Common Stock    
Equity, Class of Treasury Stock [Line Items]    
Stock repurchase program, authorized amount   $ 25,000,000.0
Repurchase of common stock (in shares) 0.4  
Stock repurchased during period, value $ 5,400,000