Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jul. 01, 2022	Jun. 30, 2023	Jul. 01, 2022
Income Statement [Abstract]
Net sales	$ 195,158	$ 160,766	$ 389,700	$ 318,814
Cost of sales	122,320	109,027	250,269	216,682
Program Inventory Impairment	596	0	596	0
Gross profit	72,242	51,739	138,835	102,132
Selling, general and administrative expenses	41,566	39,250	85,264	78,971
Research and Development Expense	5,193	5,215	11,100	10,328
Amortization of Intangible Assets	7,192	2,439	14,344	4,906
Restructuring and severance costs	272	2,927	2,462	3,096
Net loss (gain) on disposition of assets	449	(4)	418	56
Operating income	17,570	1,912	25,247	4,775
Interest expense, net	10,340	1,993	19,944	4,474
Non-service pension and post-retirement benefit income	(239)	(5,024)	(620)	(10,287)
Other expense (income), net	99	690	(472)	1,194
Earnings before income taxes	7,370	4,253	6,395	9,394
Income tax expense	2,115	479	1,909	1,745
Net earnings	$ 5,255	$ 3,774	$ 4,486	$ 7,649
Earnings per share:
Basic earnings per share (in usd per share)	$ 0.19	$ 0.13	$ 0.16	$ 0.27
Diluted earnings per share from continuing operations	$ 0.19	$ 0.13	$ 0.16	$ 0.27
Basic (in shares)	28,203	28,005	28,160	27,977
Diluted (in shares)	28,355	28,059	28,311	28,071