XML 50 R53.htm IDEA: XBRL DOCUMENT v2.4.1.9
Business Acquisitions, and Investements, Orange Electronic Equity Investment (Details) (Orange Electronic Co., Ltd [Member], USD $)
In Millions, unless otherwise specified
1 Months Ended
Jan. 31, 2013
Orange Electronic Co., Ltd [Member]
 
Business Acquisition [Line Items]  
Percentage of minority interest acquired (in hundredths) 25.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_BusinessAcquisitionAxis
= smp_OrangeElectronicCoLtdMember
Purchase price of business $ 6.3us-gaap_BusinessCombinationConsiderationTransferred1
/ us-gaap_BusinessAcquisitionAxis
= smp_OrangeElectronicCoLtdMember