XML 101 R83.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Valuation and Qualifying Accounts [Roll Forward] |  |  |
Balance at beginning of year | $ 5,822,000 | $ 5,212,000 | $ 5,687,000
Charged to costs and expenses | 14,277,000 | 11,880,000 | 10,365,000
Other | 0 | 0 | 0
Deductions | 13,929,000 | 11,270,000 | 10,840,000
Balance at end of year | 6,170,000 | 5,822,000 | 5,212,000
Allowance for Doubtful Accounts [Member] |  |  |
Valuation and Qualifying Accounts [Roll Forward] |  |  |
Balance at beginning of year | 4,406,000 | 4,244,000 | 4,488,000
Charged to costs and expenses | 450,000 | 392,000 | (295,000)
Other | 0 | 0 | 0
Deductions | 41,000 | 230,000 | (51,000)
Balance at end of year | 4,815,000 | 4,406,000 | 4,244,000
Allowance for Discounts [Member] |  |  |
Valuation and Qualifying Accounts [Roll Forward] |  |  |
Balance at beginning of year | 1,416,000 | 968,000 | 1,199,000
Charged to costs and expenses | 13,827,000 | 11,488,000 | 10,660,000
Other | 0 | 0 | 0
Deductions | 13,888,000 | 11,040,000 | 10,891,000
Balance at end of year | 1,355,000 | 1,416,000 | 968,000
Allowance for Sales Returns [Member] |  |  |
Valuation and Qualifying Accounts [Roll Forward] |  |  |
Balance at beginning of year | 40,982,000 | 35,240,000 | 33,417,000
Charged to costs and expenses | 129,964,000 | 135,448,000 | 136,777,000
Other | 0 | 0 | 0
Deductions | 128,534,000 | 129,706,000 | 134,954,000
Balance at end of year | $ 42,412,000 | $ 40,982,000 | $ 35,240,000

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_MovementInValuationAllowancesAndReservesRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column B)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column E)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column C)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to accounts other than cost and expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column C)(2)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of decrease in valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09(Column D)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
Name: | us-gaap_ValuationAllowancesAndReservesDeductions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=us-gaap_AllowanceForCreditLossMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=smp_SECSchedule1209ReserveDiscountsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=smp_SECSchedule1209AllowanceForSalesReturnsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |