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Stock Repurchases (Schedule of Repurchase of Common Stock) (Details) (USD $)	2 Months Ended
	Dec. 31, 2014
Equity, Class of Treasury Stock [Line Items]
Total Number of Shares Purchased	680,813us-gaap_TreasuryStockSharesAcquired
Average Price Paid Per Share	$ 35.22us-gaap_TreasuryStockAcquiredAverageCostPerShare
Total Number of Shares Purchased as Part of Publicly Announced Program	680,813us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Maximum Dollar Value of Shared That May Yet Be Puchased Under the Program	$ 75,998,000us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
November 13, 2014 to December 31, 2014
Equity, Class of Treasury Stock [Line Items]
Total Number of Shares Purchased	680,813us-gaap_TreasuryStockSharesAcquired / us-gaap_ShareRepurchaseProgramAxis = rgr_PeriodThreeMember
Average Price Paid Per Share	$ 35.22us-gaap_TreasuryStockAcquiredAverageCostPerShare / us-gaap_ShareRepurchaseProgramAxis = rgr_PeriodThreeMember
Total Number of Shares Purchased as Part of Publicly Announced Program	680,813us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased / us-gaap_ShareRepurchaseProgramAxis = rgr_PeriodThreeMember

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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- Definition

Amount remaining of a stock repurchase plan authorized.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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X

- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration

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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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