CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Apr. 03, 2021	Mar. 28, 2020
Segment Reporting Information [Line Items]
Total net sales	$ 184,377	$ 123,639
Cost of products sold	111,811	87,630
Gross profit	72,566	36,009
Operating expenses:
Selling	8,088	7,636
General and administrative	12,522	8,210
Total operating expenses	20,610	15,846
Operating income	51,956	20,163
Other income:
Interest income	8	566
Interest expense	(25)	(25)
Other income, net	451	107
Total other income, net	434	648
Income before income taxes	52,390	20,811
Income taxes	14,198	5,473
Net income and comprehensive income	$ 38,192	$ 15,338
Basic earnings per share	$ 2.18	$ 0.88
Diluted earnings per share	$ 2.16	$ 0.87
Weighted average number of common shares outstanding - Basic	17,559,624	17,461,524
Weighted average number of common shares outstanding - Diluted	17,718,481	17,719,418
Cash dividends per share	$ 0.71	$ 0.18
Firearms [Member]
Segment Reporting Information [Line Items]
Total net sales	$ 183,603	$ 122,765
Other income:
Income before income taxes	52,486	20,478
Unaffiliated Castings [Member]
Segment Reporting Information [Line Items]
Total net sales	774	874
Other income:
Income before income taxes	$ (161)	$ (210)