CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 28, 2015	Mar. 29, 2014
Segment Reporting Information [Line Items]
Total net sales	$ 136,954	$ 169,884
Cost of products sold	95,557	108,761
Gross profit	41,397	61,123
Operating expenses:
Selling	10,226	14,421
General and administrative	7,377	8,733
Total operating expenses	17,603	23,154
Operating income	23,794	37,969
Other income:
Interest expense, net	(40)	(36)
Other income, net	469	365
Total other income, net	429	329
Income before income taxes	24,223	38,298
Income taxes	8,720	13,979
Net income and comprehensive income	15,503	24,319
Basic earnings per share	$ 0.83	$ 1.26
Fully diluted earnings per share	$ 0.81	$ 1.22
Cash dividends per share	$ 0.17	$ 0.54
Net firearms sales [Member]
Segment Reporting Information [Line Items]
Total net sales	135,579	169,162
Other income:
Income before income taxes	25,129	38,703
Net castings sales [Member]
Segment Reporting Information [Line Items]
Total net sales	$ 1,375	$ 722