v3.26.3
Summary of Significant Accounting Policies (Details)
$ in Millions
Sep. 30, 2026
USD ($)
Accounting Policies [Abstract]
Uncollected tariff refund
$ 10.7
X
- Definition
Uncollected IEEPA Tariff Refund
+ References
No definition available.
+ Details
Name:
smp_UncollectedIEEPATariffRefund
Namespace Prefix:
smp_
Data Type:
xbrli:monetaryItemType
Balance Type:
debit
Period Type:
instant
X
- References
No definition available.
+ Details
Name:
us-gaap_AccountingPoliciesAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration