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Goodwill and Other Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2016
Goodwill [Line Items]  
Schedule of Goodwill [Table Text Block]
The changes in the carrying amount of goodwill for the years ended December 31, 2016 and December 26, 2015 are as follows (in thousands):
 
2016
 
2015
Balance, beginning of year
$
10,258

 
$
10,258

Goodwill acquired as part of acquisition during current year
84,159

 
—

Impairment loss
—

 
—

Balance, end of year
$
94,417

 
$
10,258