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Operating Segment Information (Schedule of Operating Segment Financial Information) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Oct. 01, 2016	Jul. 02, 2016	Apr. 02, 2016	Dec. 31, 2015	Sep. 26, 2015	Jun. 27, 2015	Mar. 28, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net Sales	$ 161,848	$ 161,427	$ 167,944	$ 173,109	$ 152,397	$ 120,871	$ 140,872	$ 136,954	$ 664,328	$ 551,094	$ 544,474
Income (Loss) Before Income Taxes									135,921	96,100	57,240
Identifiable Assets	355,404				315,883				355,404	315,883	254,382
Depreciation									34,698	35,438	35,915
Payments to Acquire Property, Plant, and Equipment									35,215	28,705	45,571
Firearms [Member]
Segment Reporting Information [Line Items]
Net Sales									658,433	544,850	542,267
Income (Loss) Before Income Taxes									136,390	98,565	57,525
Identifiable Assets	242,758				221,670				242,758	221,670	211,338
Depreciation									32,010	32,409	33,594
Payments to Acquire Property, Plant, and Equipment									33,455	26,246	39,511
Unaffiliated Castings [Member]
Segment Reporting Information [Line Items]
Net Sales									5,895	6,244	2,207
Income (Loss) Before Income Taxes									(1,237)	(3,407)	(1,294)
Identifiable Assets	16,096				15,289				16,096	15,289	16,772
Depreciation									2,688	3,029	2,321
Payments to Acquire Property, Plant, and Equipment									1,760	2,459	6,060
Corporate [Member]
Segment Reporting Information [Line Items]
Income (Loss) Before Income Taxes									768	942	1,009
Identifiable Assets	$ 96,550				$ 78,924				96,550	78,924	26,272
Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Net Sales									(36,779)	(31,585)	(34,095)
Intersegment Elimination [Member] | Unaffiliated Castings [Member]
Segment Reporting Information [Line Items]
Net Sales									(36,779)	(31,585)	(34,095)
Operating Segments [Member] | Unaffiliated Castings [Member]
Segment Reporting Information [Line Items]
Net Sales									$ 42,674	$ 37,829	$ 36,302

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