XML 78 R61.htm IDEA: XBRL DOCUMENT
v3.22.4

Business Acquisitions and Investments, Investment in Foshan Che Yijia New Energy Technology Co., Ltd (Details) ¥ in Millions | Dec. 31, 2022 USD ($) | Oct. 31, 2022 USD ($) | Oct. 31, 2022 CNY (¥) | Sep. 30, 2022 | Dec. 31, 2021 USD ($) | Aug. 31, 2019 USD ($)
--- | --- | --- | --- | --- | --- | ---
Investments in and Advances to Affiliates, Balance [Abstract] |  |  |  |  |  |
Investments in unconsolidated affiliates | $ 41,745,000 |  |  |  | $ 44,087,000 |
Foshan Che Yijia New Energy Technology Co., Ltd. [Member] |  |  |  |  |  |
Investments in and Advances to Affiliates, Balance [Abstract] |  |  |  |  |  |
Percentage of equity interest acquired | 33.00% | 3.55% | 3.55% | 29.00% |  | 29.00%
Investments in unconsolidated affiliates | $ 4,098,000 | $ 242,000 | ¥ 1.7 |  | $ 3,990,000 | $ 5,100,000
Foshan Che Yijia New Energy Technology Co., Ltd. [Member] | Minimum [Member] |  |  |  |  |  |
Investments in and Advances to Affiliates, Balance [Abstract] |  |  |  |  |  |
Percentage of equity interest acquired |  | 29.00% | 29.00% |  |  |
Foshan Che Yijia New Energy Technology Co., Ltd. [Member] | Maximum [Member] |  |  |  |  |  |
Investments in and Advances to Affiliates, Balance [Abstract] |  |  |  |  |  |
Percentage of equity interest acquired |  | 33.00% | 33.00% |  |  |

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of investment in equity method investee and investment in and advance to affiliate. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(18)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=smp_FoshanCheYijiaNewEnergyTechnologyCoLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |