Business Segments (Schedule Of Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Oct. 02, 2016	Jul. 03, 2016	Apr. 03, 2016	Dec. 31, 2015	Oct. 04, 2015	Jul. 05, 2015	Apr. 05, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
External net sales	$ 131,914	$ 74,533	$ 69,516	$ 65,942	$ 115,744	$ 72,325	$ 84,609	$ 82,971	$ 341,905	$ 355,649	$ 347,198
Gross profit	35,353	$ 17,094	$ 17,167	$ 16,048	29,659	$ 18,605	$ 20,560	$ 20,609	85,662	89,433	81,306
Operating profit									62,512	62,525	45,830
Total assets	417,594				387,384				417,594	387,384	374,071
Depreciation and amortization									8,875	8,828	15,509
Capital expenditures									4,824	4,076	1,736
Housewares/ Small Appliances [Member]
Segment Reporting Information [Line Items]
External net sales									108,128	125,944	125,653
Gross profit									20,963	27,455	24,097
Operating profit									9,677	16,106	13,513
Total assets	200,639				184,385				200,639	184,385	161,812
Depreciation and amortization									1,045	923	954
Capital expenditures									1,351	3,955	571
Defense Products [Member]
Segment Reporting Information [Line Items]
External net sales									233,777	229,705	221,545
Gross profit									64,699	61,978	57,209
Operating profit									52,835	46,419	32,317
Total assets	158,062				143,189				158,062	143,189	149,466
Depreciation and amortization									7,830	7,905	14,555
Capital expenditures									3,473	121	1,165
Discontinued Operations Held-for-sale [Member]
Segment Reporting Information [Line Items]
Total assets	$ 58,893				$ 59,810				$ 58,893	$ 59,810	$ 62,793