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Stock-Based Compensation (Tables)
 6 Months Ended
Jun. 27, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of Stock Based Compensation Expense
The following table summarizes expense associated with these plans (in thousands):
Three Months EndedSix Months Ended
June 27,
2020		June 29,
2019		June 27,
2020		June 29,
2019
Compensation cost$1,301  $1,620  $5,659  $4,072  
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period
The options and units granted by the Corporation had fair values as follows (in thousands):
Six Months Ended
June 27,
2020		June 29,
2019
Stock options$—  $6,211  
Restricted stock units$5,852  $361  
Performance stock units$5,852  $—  
Schedule of Unrecognized Compensation Cost, Nonvested Awards
The following table summarizes unrecognized compensation expense and the weighted-average remaining service period for non-vested stock options and stock units as of June 27, 2020:
Unrecognized Compensation Expense
(in thousands)		Weighted-Average Remaining
Service Period (years)
Non-vested stock options$1,835  1.1
Non-vested restricted stock units$2,045  0.9
Non-vested performance stock units$953  1.4