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Retirement Benefits
12 Months Ended
Dec. 30, 2017
Retirement Benefits [Abstract]  
Retirement Benefits
Retirement Benefits

The Corporation has a defined contribution retirement plan covering substantially all employees.

The Corporation's annual contribution to the plan is based on employee eligible earnings. A portion of the contribution is also based on results of operations, and a portion is contributed in the form of common stock of the Corporation. The following table reconciles the annual contribution (in thousands):
 
2017

 
2016

 
2015

Stock contribution
$
7,327

 
$
7,170

 
$
6,828

Other contribution
23,834

 
25,349

 
22,268

Total annual contribution
$
31,161

 
$
32,519

 
$
29,096