Business Segments (Schedule Of Segment Information) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
External net sales	$ 79,227	$ 74,561	$ 156,053	$ 147,415
Gross profit	19,445	17,560	39,722	37,686
Operating profit (loss)	12,398	12,137	25,779	26,136
Total assets	389,536	389,939	389,536	389,939	$ 411,873
Depreciation and amortization	2,421	2,178	4,218	4,235
Capital expenditures	3,500	1,835	5,290	2,512
Housewares/ Small Appliances [Member]
Segment Reporting Information [Line Items]
External net sales	17,978	16,901	34,035	36,948
Gross profit	2,248	1,528	4,147	4,697
Operating profit (loss)	(298)	(949)	(1,173)	(402)
Total assets	247,352	222,165	247,352	222,165
Depreciation and amortization	332	308	668	611
Capital expenditures	3,203	463	4,912	923
Defense [Member]
Segment Reporting Information [Line Items]
External net sales	61,249	57,660	122,018	110,467
Gross profit	17,197	16,032	35,575	32,989
Operating profit (loss)	12,696	13,086	26,952	26,538
Total assets	141,656	162,439	141,656	162,439
Depreciation and amortization	2,089	1,870	3,550	3,624
Capital expenditures	297	1,372	378	1,589
Discontinued Operations Held-for-sale [Member]
Segment Reporting Information [Line Items]
Total assets	$ 528	$ 5,335	$ 528	$ 5,335