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Acquisition of Marlin Assets (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)
Marlin Acquisition [Member]
Business Acquisition [Line Items]
Acquisition related costs	$ 1.7

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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X

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=123586518&loc=d3e1043-128460

+ Details

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Period Type:	duration

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- Details

Name:	us-gaap_BusinessAcquisitionAxis=rgr_MarlinAcquisitionMember
Namespace Prefix:
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Balance Type:
Period Type: