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CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net earnings | $ 8,948 us-gaap_NetIncomeLoss | $ 11,725 us-gaap_NetIncomeLoss
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities: |  |
Depreciation and amortization | 4,288 us-gaap_DepreciationDepletionAndAmortization | 4,084 us-gaap_DepreciationDepletionAndAmortization
Amortization of deferred financing cost | 174 us-gaap_AmortizationOfFinancingCosts | 175 us-gaap_AmortizationOfFinancingCosts
Increase to allowance for doubtful accounts | 180 us-gaap_ProvisionForDoubtfulAccounts | 152 us-gaap_ProvisionForDoubtfulAccounts
Increase to inventory reserves | 238 us-gaap_InventoryWriteDown | 508 us-gaap_InventoryWriteDown
Amortization of deferred gain on sale of building | (262)us-gaap_GainLossOnSaleOfPropertyPlantEquipment | (262)us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Equity (income) loss from joint ventures | (390)smp_EquityIncomeLossFromAndGainLossOnSaleOfJointVentures | 53 smp_EquityIncomeLossFromAndGainLossOnSaleOfJointVentures
Employee stock ownership plan allocation | 552 us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense | 457 us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense
Stock-based compensation | 1,319 us-gaap_ShareBasedCompensation | 972 us-gaap_ShareBasedCompensation
Excess tax benefits related to exercise of employee stock grants | (38)us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities | (36)us-gaap_ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
Increase in deferred income taxes | (64)us-gaap_IncreaseDecreaseInDeferredIncomeTaxes | (335)us-gaap_IncreaseDecreaseInDeferredIncomeTaxes
Loss on discontinued operations, net of tax | 391 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity | 682 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity
Change in assets and liabilities: |  |
Increase in accounts receivable | (25,289)us-gaap_IncreaseDecreaseInAccountsReceivable | (852)us-gaap_IncreaseDecreaseInAccountsReceivable
Increase in inventories | (7,473)us-gaap_IncreaseDecreaseInInventories | (12,715)us-gaap_IncreaseDecreaseInInventories
Decrease in prepaid expenses and other current assets | 3,620 us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | 2,044 us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Increase in accounts payable | 5,255 us-gaap_IncreaseDecreaseInAccountsPayable | 9,310 us-gaap_IncreaseDecreaseInAccountsPayable
Decrease in sundry payables and accrued expenses | (6,287)us-gaap_IncreaseDecreaseInAccruedLiabilities | (5,971)us-gaap_IncreaseDecreaseInAccruedLiabilities
Net changes in other assets and liabilities | 675 us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet | (759)us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet
Net cash provided by (used in) operating activities | (14,163)us-gaap_NetCashProvidedByUsedInOperatingActivities | 9,232 us-gaap_NetCashProvidedByUsedInOperatingActivities
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Acquisitions of and investments in businesses | 0 us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired | (12,225)us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Capital expenditures | (4,009)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (2,763)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Other investing activities | 26 us-gaap_PaymentsForProceedsFromOtherInvestingActivities | 0 us-gaap_PaymentsForProceedsFromOtherInvestingActivities
Net cash used in investing activities | (3,983)us-gaap_NetCashProvidedByUsedInInvestingActivities | (14,988)us-gaap_NetCashProvidedByUsedInInvestingActivities
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Net borrowings under line-of-credit agreements | 15,009 us-gaap_ProceedsFromRepaymentsOfLinesOfCredit | 11,616 us-gaap_ProceedsFromRepaymentsOfLinesOfCredit
Principal payments of long-term debt and capital lease obligations | (63)us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities | (32)us-gaap_RepaymentsOfLongTermDebtAndCapitalSecurities
Purchase of treasury stock | 0 us-gaap_PaymentsForRepurchaseOfCommonStock | (4,526)us-gaap_PaymentsForRepurchaseOfCommonStock
Increase in overdraft balances | 1,536 us-gaap_ProceedsFromRepaymentsOfBankOverdrafts | 947 us-gaap_ProceedsFromRepaymentsOfBankOverdrafts
Proceeds from exercise of employee stock options | 35 us-gaap_ProceedsFromStockOptionsExercised | 66 us-gaap_ProceedsFromStockOptionsExercised
Excess tax benefits related to the exercise of employee stock grants | 38 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities | 36 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
Dividends paid | (3,434)us-gaap_PaymentsOfDividendsCommonStock | (2,984)us-gaap_PaymentsOfDividendsCommonStock
Net cash provided by financing activities | 13,121 us-gaap_NetCashProvidedByUsedInFinancingActivities | 5,123 us-gaap_NetCashProvidedByUsedInFinancingActivities
Effect of exchange rate changes on cash | (584)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents | (503)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
Net decrease in cash and cash equivalents | (5,609)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (1,136)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
CASH AND CASH EQUIVALENTS at beginning of period | 13,728 us-gaap_CashAndCashEquivalentsAtCarryingValue | 5,559 us-gaap_CashAndCashEquivalentsAtCarryingValue
CASH AND CASH EQUIVALENTS at end of period | 8,119 us-gaap_CashAndCashEquivalentsAtCarryingValue | 4,423 us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash paid during the period for: |  |
Interest | 245 us-gaap_InterestPaid | 110 us-gaap_InterestPaid
Income taxes | $ 1,892 us-gaap_IncomeTaxesPaid | $ 2,474 us-gaap_IncomeTaxesPaid

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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=6519514 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=6518256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.19) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.18) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.22) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 + Details
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- Definition The net cash outflow or inflow from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3095-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3098-108585 + Details
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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The net cash inflow or outflow from the excess drawing from an existing cash balance, which will be honored by the bank but reflected as a loan to the drawer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3095-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3098-108585 + Details
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- Definition The net cash inflow or cash outflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with either short term or long term maturity that is collateralized (backed by pledge, mortgage or other lien in the entity's assets). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -Subparagraph c -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3098-108585 + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.5) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 5 -Article 5 + Details
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- Definition The cash outflow associated with security instruments that either represent a creditor or an ownership relationship with the holder of the investment security with a maturity of beyond one year or normal operating cycle, if longer. Includes repayments of (a) debt, (b) capital lease obligations, (c) mandatory redeemable capital securities, and (d) any combination of (a), (b), or (c). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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