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Revenue Recognition (Tables)
 3 Months Ended
Apr. 01, 2022
Revenue from Contract with Customer [Abstract]  
Contract with Customer, Asset and Liability
Contract Balances: The timing of revenue recognition, billings, and cash collections resulted in the following contract assets and contract liabilities:
(Thousands)April 1, 2022December 31, 2021$ change% change
Accounts receivable, trade
$230,805 $213,584 $17,221 8 %
Unbilled receivables
6,445 7,961 (1,516)(19)%
Unearned revenue
7,407 7,770 (363)(5)%