XML 109 R73.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Credit Facilities and Long-Term Debt, Deferred Financing Costs (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Amortization for Future Years [Abstract] |  |
2020 | $ 225 |
2021 | 225 |
2022 | 225 |
2023 | 206 |
Total amortization | 881 | $ 1,100
JPMorgan Chase Bank Credit Facility [Member] |  |
Amortization for Future Years [Abstract] |  |
Total amortization | $ 500 |

X
- References No definition available. + Details
Name: | smp_AmortizationOfFinancingCostForFutureYearsAbstract
Namespace Prefix: | smp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of amortization expense expected to be recognized during the next fiscal year following the latest fiscal year for financing costs. + References No definition available. + Details
Name: | smp_AmortizationOfFinancingCostsNextTwelveMonths
Namespace Prefix: | smp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of amortization expense expected to be recognized during the fourth fiscal year following the latest fiscal year for financing costs. + References No definition available. + Details
Name: | smp_AmortizationOfFinancingCostsYearFour
Namespace Prefix: | smp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of amortization expense expected to be recognized during the third fiscal year following the latest fiscal year for financing costs. + References No definition available. + Details
Name: | smp_AmortizationOfFinancingCostsYearThree
Namespace Prefix: | smp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of amortization expense expected to be recognized during the second fiscal year following the latest fiscal year for financing costs. + References No definition available. + Details
Name: | smp_AmortizationOfFinancingCostsYearTwo
Namespace Prefix: | smp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399 + Details
Name: | us-gaap_DeferredFinanceCostsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_CreditFacilityAxis=smp_JPMorganChaseBankCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |