XML 86 R67.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Retirement Plans - Defined Contribution Plans (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Retirement Benefits [Abstract] |  |  |
Eligible employee contribution maximum (percentage) | 85.00% |  |
Defined contribution plan, employment eligibility to receive matching contributions, minimum (in years) | 6 months |  |
Defined contribution plan, percentage of eligible employee contribution match, first tier (percentage) | 100.00% |  |
Defined contribution plan, percentage of eligible employee contributions matched fully, first tier (percentage) | 3.00% |  |
Defined contribution plan, eligible employee contribution match, second tier (percentage) | 50.00% |  |
Defined contribution plan, eligible employee contribution matched by the company, second tier (percentage) | 2.00% |  |
Defined contribution plan, cost recognized | $ 7.8 | $ 7.5 | $ 7.5

X
- Definition Amount matched by the company for employer contributions to a defined contribution plan for the second tier of percentages applied to the employees additional contribution above the initial threshold level. + References No definition available. + Details
Name: | sgi_DefinedContributionPlanEligibleEmployeeContributionMatchSecondTier
Namespace Prefix: | sgi_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage of the employees contribution to a defined contribution above the initial matching threshold that the employer will match,, as per terms of the plan. + References No definition available. + Details
Name: | sgi_DefinedContributionPlanEligibleEmployeeContributionMatchedByCompanySecondTier
Namespace Prefix: | sgi_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition For a defined contribution plan, the duration of employment for employees to be eligible to receive matching contributions. + References No definition available. + Details
Name: | sgi_DefinedContributionPlanEmploymenteligibilitytoreceivematchingcontributionsminimum
Namespace Prefix: | sgi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition For a defined contribution plan, eligible employee contributions for a first stated percentage amount, the percentage amount matched by the company for employer contribution as stated in the plan. + References No definition available. + Details
Name: | sgi_DefinedContributionPlanPercentageOfEligibleEmployeeContributionMatchFirstTier
Namespace Prefix: | sgi_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage of the employees first contributions to a defined contribution plan that the employer will match dollar for dollar. + References No definition available. + Details
Name: | sgi_DefinedContributionPlanPercentageOfEligibleEmployeeContributionsMatchedFullyFirstTier
Namespace Prefix: | sgi_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition For a defined contribution plan, the maximum amount an eligible employee pay that may be contributed to the plan, stated as a percentage total pay within a period. + References No definition available. + Details
Name: | sgi_EligibleEmployeeContributionMaximum
Namespace Prefix: | sgi_
Data Type: | dtr-types1:percentItemType
Balance Type: | na
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 cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480794/715-70-50-1 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration