Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Apr. 02, 2021	Apr. 03, 2020
Income Statement [Abstract]
Net sales	$ 171,616	$ 207,322
Cost of sales	118,711	139,620
Gross profit	52,905	67,702
Selling, general and administrative expenses	44,991	60,989
Costs of Transaction Services Agreement	705	4,140
Cost of Acquired Retention Plans	0	5,703
Restructuring and severance costs	1,352	1,795
Gain (Loss) on Disposition of Business	234	(493)
Net loss (gain) on sale of assets	10	(10)
Operating income (loss)	5,613	(4,422)
Interest expense, net	4,251	3,247
Non-service pension and post retirement benefit income	(6,643)	(4,063)
Income from Transaction Services Agreement	(475)	(2,974)
Other expense, net	289	218
Earnings (loss) from continuing operations before income taxes	8,191	(850)
Income tax expense (benefit)	207	(443)
Earnings from continuing operations	7,984	(407)
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax	0	0
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	0	692
Earnings from discontinued operations, net of tax	0	692
Net earnings	$ 7,984	$ 285
Earnings per share:
Basic earnings per share from continuing operations	$ 0.29	$ (0.01)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	0.00	0.02
Basic earnings per share (in usd per share)	0.29	0.01
Diluted earnings per share from continuing operations	0.29	(0.01)
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share	0.00	0.02
Diluted earnings per share (in usd per share)	$ 0.29	$ 0.01
Average shares outstanding:
Basic (in shares)	27,815	27,809
Diluted (in shares)	27,867	27,891