SIGNIFICANT ACCOUNTING POLICIES (Policies)	6 Months Ended
Jun. 30, 2012
Accounting Policies [Abstract]
Organization:	Organization: Sturm, Ruger & Company, Inc. (the “Company”) is principally engaged in the design, manufacture, and sale of firearms to domestic customers. Approximately 99% of the Company’s total sales for the three and six months ended June 30, 2012 were firearms sales, and approximately 1% was investment castings sales. Export sales represent approximately 5% of total sales. The Company’s design and manufacturing operations are located in the United States and almost all product content is domestic. The Company’s firearms are sold through a select number of independent wholesale distributors principally to the commercial sporting market. The Company manufactures investment castings made from steel alloys for internal use in its firearms and utilizes available investment casting capacity to manufacture and sell castings to unaffiliated, third-party customers.
Fair Value of Financial Instruments:	Fair Value of Financial Instruments: The carrying amounts of financial instruments, including cash, short-term investments, accounts receivable, accounts payable and accrued liabilities approximate fair value due to the short-term maturity of these items.
Short-term Investments:	Short-term Investments: Short-term investments consist principally of United States Treasury instruments, all maturing within one year, and are recorded at cost plus accrued interest, which approximates market. The income from short-term investments is included in other income, net. The Company intends to hold these investments until maturity. The Company evaluates securities for other than temporary impairment at least on a quarterly basis, and more frequently when market conditions warrant such evaluation. The Company has determined that the carrying value of short-term investments has not been impaired.
Use of Estimates:	Use of Estimates: The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.

Fair Value of Financial Instruments:

The carrying amounts of financial instruments, including cash, short-term investments, accounts receivable, accounts payable and accrued liabilities approximate fair value due to the short-term maturity of these items.

Use of Estimates:

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.