Business Segments (Schedule Of Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Oct. 01, 2017	Jul. 02, 2017	Apr. 02, 2017	Dec. 31, 2016	Oct. 02, 2016	Jul. 03, 2016	Apr. 03, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
External net sales	$ 115,604	$ 70,614	$ 74,561	$ 72,854	$ 131,914	$ 74,533	$ 69,516	$ 65,942	$ 333,633	$ 341,905	$ 355,649
Gross profit	30,656	$ 18,892	$ 17,560	$ 20,126	35,353	$ 17,094	$ 17,167	$ 16,048	87,234	85,662	89,433
Operating profit (loss)									61,704	62,512	62,525
Total assets	411,873				417,594				411,873	417,594	387,384
Depreciation and amortization									9,839	8,875	8,828
Capital expenditures									3,150	4,824	4,076
Housewares/ Small Appliances [Member]
Segment Reporting Information [Line Items]
External net sales									97,299	108,128	125,944
Gross profit									16,850	20,963	27,455
Operating profit (loss)									6,264	9,677	16,106
Total assets	242,815				200,639				242,815	200,639	184,385
Depreciation and amortization									1,328	1,045	923
Capital expenditures									1,849	1,351	3,955
Defense [Member]
Segment Reporting Information [Line Items]
External net sales									236,334	233,777	229,705
Gross profit									70,384	64,699	61,978
Operating profit (loss)									55,440	52,835	46,419
Total assets	162,869				158,062				162,869	158,062	143,189
Depreciation and amortization									8,511	7,830	7,905
Capital expenditures									1,301	3,473	121
Discontinued Operations Held-for-sale [Member]
Segment Reporting Information [Line Items]
Total assets	$ 6,189				$ 58,893				$ 6,189	$ 58,893	$ 59,810