Business Segments (Schedule Of Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2017	Jul. 03, 2016	Jul. 02, 2017	Jul. 03, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
External net sales	$ 74,561	$ 69,516	$ 147,415	$ 135,458
Gross profit	17,560	17,167	37,686	33,215
Operating profit (loss)	12,137	11,553	26,136	21,206
Total assets	389,939	376,487	389,939	376,487	$ 417,594
Depreciation and amortization	2,178	2,033	4,235	3,564
Capital expenditures	1,835	1,543	2,512	2,015
Housewares/ Small Appliances [Member]
Segment Reporting Information [Line Items]
External net sales	16,901	19,280	36,948	40,676
Gross profit	1,528	3,269	4,697	7,556
Operating profit (loss)	(949)	699	(402)	1,913
Total assets	222,165	161,310	222,165	161,310
Depreciation and amortization	308	257	611	498
Capital expenditures	463	453	923	892
Defense Products [Member]
Segment Reporting Information [Line Items]
External net sales	57,660	50,236	110,467	94,782
Gross profit	16,032	13,898	32,989	25,659
Operating profit (loss)	13,086	10,854	26,538	19,293
Total assets	162,439	155,032	162,439	155,032
Depreciation and amortization	1,870	1,776	3,624	3,066
Capital expenditures	1,372	1,090	1,589	1,123
Discontinued Operations Held-for-sale [Member]
Segment Reporting Information [Line Items]
Total assets	$ 5,335	$ 60,145	$ 5,335	$ 60,145