Business Segments (Schedule Of Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017	Oct. 02, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
External net sales	$ 70,614	$ 74,533	$ 218,029	$ 209,991
Gross profit	18,892	17,094	56,578	50,309
Operating profit (loss)	11,684	11,428	37,820	32,634
Total assets	393,638	386,587	393,638	386,587	$ 417,594
Depreciation and amortization	2,778	2,035	7,013	5,599
Capital expenditures	364	967	2,876	2,982
Housewares/ Small Appliances [Member]
Segment Reporting Information [Line Items]
External net sales	20,935	23,716	57,883	64,392
Gross profit	3,148	3,460	7,845	11,016
Operating profit (loss)	299	683	(103)	2,596
Total assets	219,811	165,523	219,811	165,523
Depreciation and amortization	344	257	955	755
Capital expenditures	579		1,502	892
Defense Products [Member]
Segment Reporting Information [Line Items]
External net sales	49,679	50,817	160,146	145,599
Gross profit	15,744	13,634	48,733	39,293
Operating profit (loss)	11,385	10,745	37,923	30,038
Total assets	169,762	161,663	169,762	161,663
Depreciation and amortization	2,434	1,778	6,058	4,844
Capital expenditures	(215)	967	1,374	2,090
Discontinued Operations Held-for-sale [Member]
Segment Reporting Information [Line Items]
Total assets	$ 4,065	$ 59,401	$ 4,065	$ 59,401