Revenue Recognition (Tables)

9 Months Ended

Sep. 25, 2020

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)	September 25, 2020		December 31, 2019		$ change		% change
Accounts receivable, trade	$	142,363	$	141,168	$	1,195	1	%
Unbilled receivables	8,364		13,583		(5,219)		(38)	%
Unearned revenue	4,360		3,380		980		29	%