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Employee Benefit Plans (Details) - USD ($) $ in Millions		3 Months Ended
	Mar. 30, 2024	Mar. 30, 2024	Apr. 01, 2023
Employee Benefit Plans [Abstract]
Expenses related to matching employee contributions		$ 1.2	$ 1.7
Future match of defined contribution plans	$ 3.0
Supplemental contributions total		$ 2.0	$ 2.2
Future, supplemental contributions	$ 4.5

X

- Definition

Amount of contributions made by the employer to the plan during the remainder of fiscal year.

+ References

No definition available.

+ Details

Name:	rgr_DefinedBenefitPlanContributionsByEmployerForRemainderOfFiscalYear
Namespace Prefix:	rgr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The amount represents the total cost estimated by the company for defined benefit plans.

+ References

No definition available.

+ Details

Name:	rgr_EstimatedCostForDefinedBenefitPlans
Namespace Prefix:	rgr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Definition

Amount of administrative expense incurred by defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanAdministrativeExpenses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration