$JJSF
J&J SNACK FOODS CORP Stock $jjsf

$jjsf Overview Financials Valuation SEC Filings Company Website

2020 Q3 Form 10-K Financial Statement

#000143774920024447 Filed on November 25, 2020

Income Statement

Concept	2020 Q3	2020	2019 Q3
Revenue	$252.5M	$1.022B	$311.9M
YoY Change	-19.03%	-13.84%	3.71%
Cost Of Revenue	$198.6M	$783.6M	$218.9M
YoY Change	-9.27%	-6.28%	4.49%
Gross Profit	$53.93M	$238.4M	$92.94M
YoY Change	-41.98%	-31.96%	1.85%
Gross Profit Margin	21.35%	23.33%	29.8%
Selling, General & Admin	$48.10M	$121.7M	$61.80M
YoY Change	-22.17%	-11.25%	3.17%
% of Gross Profit	89.19%	51.05%	66.49%
Research & Development		$680.0K
YoY Change		5.43%
% of Gross Profit		0.29%
Depreciation & Amortization	$13.10M	$53.05M	$12.60M
YoY Change	3.97%	9.13%	5.88%
% of Gross Profit	24.29%	22.25%	13.56%
Operating Expenses	$48.70M	$221.2M	$61.90M
YoY Change	-21.32%	-5.23%	3.0%
Operating Profit	$5.227M	$17.19M	$31.04M
YoY Change	-83.16%	-85.3%	-0.36%
Interest Expense	$1.700M	$4.300M	$1.900M
YoY Change	-10.53%	-55.21%	-20.83%
% of Operating Profit	32.52%	25.01%	6.12%
Other Income/Expense, Net
YoY Change
Pretax Income	$5.600M	$21.47M	$33.00M
YoY Change	-83.03%	-83.04%	-1.79%
Income Tax	-$1.000M	$3.161M	$6.900M
% Of Pretax Income	-17.86%	14.73%	20.91%
Net Earnings	$6.584M	$18.31M	$26.07M
YoY Change	-74.74%	-80.69%	11.47%
Net Earnings / Revenue	2.61%	1.79%	8.36%
Basic Earnings Per Share		$0.97
Diluted Earnings Per Share	$0.35	$0.96	$1.36
COMMON SHARES
Basic Shares Outstanding	18.89M	18.90M	18.84M
Diluted Shares Outstanding		19.03M

Balance Sheet

Concept	2020 Q3	2020	2019 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$247.0M	$247.0M	$243.5M
YoY Change	1.44%	1.44%	83.77%
Cash & Equivalents	$195.8M	$195.8M	$192.4M
Short-Term Investments	$51.20M	$51.20M	$51.10M
Other Short-Term Assets	$17.10M	$17.10M	$5.800M
YoY Change	194.83%	194.83%	16.0%
Inventory	$108.9M	$108.9M	$116.2M
Prepaid Expenses
Receivables	$126.6M	$126.6M	$140.9M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$499.6M	$499.6M	$506.4M
YoY Change	-1.34%	-1.34%	32.28%
LONG-TERM ASSETS
Property, Plant & Equipment	$261.6M	$319.7M	$253.4M
YoY Change	3.22%	26.16%	4.44%
Goodwill	$121.8M		$102.5M
YoY Change	18.85%		0.0%
Intangibles
YoY Change
Long-Term Investments	$30.90M	$30.90M	$99.30M
YoY Change	-68.88%	-68.88%	-30.8%
Other Assets	$2.912M	$2.900M	$2.838M
YoY Change	2.61%	3.57%	2.75%
Total Long-Term Assets	$557.0M	$557.0M	$513.0M
YoY Change	8.58%	8.6%	-7.64%
TOTAL ASSETS
Total Short-Term Assets	$499.6M	$499.6M	$506.4M
Total Long-Term Assets	$557.0M	$557.0M	$513.0M
Total Assets	$1.057B	$1.057B	$1.019B
YoY Change	3.65%	3.66%	8.64%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$73.14M	$73.10M	$72.03M
YoY Change	1.54%	1.53%	3.5%
Accrued Expenses	$7.420M	$49.80M	$7.808M
YoY Change	-4.97%	26.4%	-2.78%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$300.0K	$300.0K	$300.0K
YoY Change	0.0%	0.0%	0.0%
Total Short-Term Liabilities	$134.1M	$134.1M	$121.2M
YoY Change	10.63%	10.64%	2.83%
LONG-TERM LIABILITIES
Long-Term Debt	$400.0K	$400.0K	$700.0K
YoY Change	-42.86%	-42.86%	-12.5%
Other Long-Term Liabilities	$460.0K	$48.10M	$1.716M
YoY Change	-73.19%	2729.41%	-11.91%
Total Long-Term Liabilities	$460.0K	$48.50M	$1.716M
YoY Change	-73.19%	1920.83%	-11.91%
TOTAL LIABILITIES
Total Short-Term Liabilities	$134.1M	$134.1M	$121.2M
Total Long-Term Liabilities	$460.0K	$48.50M	$1.716M
Total Liabilities	$134.6M	$247.1M	$123.0M
YoY Change	9.46%	33.14%	2.59%
SHAREHOLDERS EQUITY
Retained Earnings	$775.8M		$801.0M
YoY Change	-3.14%		7.7%
Common Stock	$49.27M		$45.74M
YoY Change	7.7%		67.32%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$809.5M	$809.5M	$833.8M
YoY Change
Total Liabilities & Shareholders Equity	$1.057B	$1.057B	$1.019B
YoY Change	3.65%	3.66%	9.37%

Cashflow Statement

Concept	2020 Q3	2020	2019 Q3
OPERATING ACTIVITIES
Net Income	$6.584M	$18.31M	$26.07M
YoY Change	-74.74%	-80.69%	11.47%
Depreciation, Depletion And Amortization	$13.10M	$53.05M	$12.60M
YoY Change	3.97%	9.13%	5.88%
Cash From Operating Activities	$25.50M	$92.14M	$46.30M
YoY Change	-44.92%	-37.53%	21.52%
INVESTING ACTIVITIES
Capital Expenditures	-$10.20M	$57.82M	-$15.00M
YoY Change	-32.0%	1.21%	-10.18%
Acquisitions		$57.21M
YoY Change		4849.13%
Other Investing Activities	$19.80M	$150.0K	$8.000M
YoY Change	147.5%	-23.47%	-671.43%
Cash From Investing Activities	$9.500M	-$44.46M	-$7.000M
YoY Change	-235.71%	2.54%	-61.11%
FINANCING ACTIVITIES
Cash Dividend Paid		$42.05M
YoY Change		14.76%
Common Stock Issuance & Retirement, Net		$1.071M
YoY Change		-107.56%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-9.400M	-$43.46M	-3.000M
YoY Change	213.33%	90.41%	-41.18%
NET CHANGE
Cash From Operating Activities	25.50M	$92.14M	46.30M
Cash From Investing Activities	9.500M	-$44.46M	-7.000M
Cash From Financing Activities	-9.400M	-$43.46M	-3.000M
Net Change In Cash	25.60M	$3.414M	36.30M
YoY Change	-29.48%	-95.78%	142.0%
FREE CASH FLOW
Cash From Operating Activities	$25.50M	$92.14M	$46.30M
Capital Expenditures	-$10.20M	$57.82M	-$15.00M
Free Cash Flow	$35.70M	$34.33M	$61.30M
YoY Change	-41.76%	-62.02%	11.86%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2019Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	18895000
CY2019Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	414000	USD
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CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	2300000	USD
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CY2018	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	USD
CY2020Q3	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
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CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.96
CY2020	jjsf	Right Of Use Asset Obtained In Exchange For Lease Liability RightOfUseAssetObtainedInExchangeForLeaseLiability	685000	USD
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CY2019Q3	jjsf	Buildings Gross BuildingsGross	259534000	USD
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CY2019Q3	us-gaap	Assets Assets	1019339000	USD
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CY2019Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1716000	USD
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CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-455000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-0	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-74000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-2599000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-909000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-3119000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	15706000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	93910000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	100477000	USD
CY2017Q3	us-gaap	Stockholders Equity StockholdersEquity	682322000	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	7371000	USD
CY2018	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1523000	USD
CY2018	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-2738000	USD
CY2018	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-381000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	97000	USD
CY2018	us-gaap	Dividends Common Stock DividendsCommonStock	33666000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3761000	USD
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	2794000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	103596000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	759091000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	12658000	USD
CY2019	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1516000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-909000	USD
CY2019	jjsf	Cumulative Effects Of New Accounting Principle In Period Of Adoption CumulativeEffectsOfNewAccountingPrincipleInPeriodOfAdoption	0	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	91000	USD
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	37654000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4139000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	94819000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	833751000	USD
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	6406000	USD
CY2020	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1495000	USD
CY2020	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-2599000	USD
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation Gross StockIssuedDuringPeriodValueShareBasedCompensationGross	91000	USD
CY2020	us-gaap	Dividends Common Stock DividendsCommonStock	43483000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4504000	USD
CY2020	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	8972000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	18305000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	809498000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	18305000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	94819000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	103596000	USD
CY2020	us-gaap	Depreciation Depreciation	49830000	USD
CY2019	us-gaap	Depreciation Depreciation	45225000	USD
CY2018	us-gaap	Depreciation Depreciation	42939000	USD
CY2020	jjsf	Amortization Of Intangible Assets And Deferred Costs AmortizationOfIntangibleAssetsAndDeferredCosts	3218000	USD
CY2019	jjsf	Amortization Of Intangible Assets And Deferred Costs AmortizationOfIntangibleAssetsAndDeferredCosts	3385000	USD
CY2018	jjsf	Amortization Of Intangible Assets And Deferred Costs AmortizationOfIntangibleAssetsAndDeferredCosts	3538000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	303000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	347000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	912000	USD
CY2020	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	6387000	USD
CY2019	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	0	USD
CY2018	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	0	USD
CY2020	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	296000	USD
CY2019	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	730000	USD
CY2018	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	1012000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	4595000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	4230000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	3858000	USD
CY2020	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	2622000	USD
CY2019	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	9637000	USD
CY2018	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-10392000	USD
CY2020	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	-882000	USD
CY2019	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	-404000	USD
CY2018	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	-140000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-14580000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	8759000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	7917000	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-7877000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	3231000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	9639000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	11366000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	744000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	1120000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-4780000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	2150000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-1736000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	92143000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	147499000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	123367000	USD
CY2020	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	57212000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1156000	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	-0	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	57817000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	57128000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	60022000	USD
CY2020	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	6103000	USD
CY2019	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	26091000	USD
CY2018	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	91112000	USD
CY2020	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	73226000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	39158000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	75302000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	3593000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2050000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2639000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	150000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	196000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-54000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-44463000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-43363000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-73139000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	8972000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	-0	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2794000	USD
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	7901000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	14174000	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	8894000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	340000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	356000	USD
CY2018	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	370000	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	42053000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	36644000	USD
CY2018	us-gaap	Payments Of Dividends PaymentsOfDividends	33066000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-43464000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-22826000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-27336000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-802000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-394000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-2375000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	3414000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	80916000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	20517000	USD
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	192395000	USD
CY2018Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	111479000	USD
CY2017Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	90962000	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	195809000	USD
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	192395000	USD
CY2018Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	111479000	USD
CY2020Q3	jjsf	Liability For Allowances Enduser Pricing Adjustments And Trade Spending LiabilityForAllowancesEnduserPricingAdjustmentsAndTradeSpending	14300000	USD
CY2019Q3	jjsf	Liability For Allowances Enduser Pricing Adjustments And Trade Spending LiabilityForAllowancesEnduserPricingAdjustmentsAndTradeSpending	14800000	USD
CY2019Q3	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1334000	USD
CY2018Q3	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1865000	USD
CY2020	jjsf	Contract With Customer Liability Additions ContractWithCustomerLiabilityAdditions	5526000	USD
CY2019	jjsf	Contract With Customer Liability Additions ContractWithCustomerLiabilityAdditions	6308000	USD
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	-5533000	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	-6839000	USD
CY2020Q3	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1327000	USD
CY2019Q3	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	1334000	USD
CY2020Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1388000	USD
CY2019Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	572000	USD
CY2020	us-gaap	Use Of Estimates UseOfEstimates	<table border="0" cellpadding="0" cellspacing="0" style="width: 100%; text-indent: 0px;"><tbody><tr style="vertical-align: top;"><td style="width: 27pt;"><p style="margin: 0pt; text-align: justify; font-family: "Times New Roman", Times, serif; font-size: 10pt;"><b><em style="font: inherit;">4.</em> </b></p> </td><td> <p style="margin: 0pt; text-align: justify; font-family: "Times New Roman", Times, serif; font-size: 10pt;"><b>Use of Estimates</b></p> </td></tr> </tbody></table> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"> </p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin-bottom:0pt;margin-left:0pt;margin-top:0pt;text-align:left;text-indent:36pt;">In preparing financial statements in conformity with accounting principles generally accepted in the United States of America, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"/>
CY2020	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<table border="0" cellpadding="0" cellspacing="0" style="width: 100%; text-indent: 0px;"><tbody><tr style="vertical-align: top;"><td style="width: 27pt;"> <p style="margin: 0pt; text-align: justify; font-family: "Times New Roman", Times, serif; font-size: 10pt;"><b><em style="font: inherit;">6.</em> </b></p> </td><td> <p style="margin: 0pt; text-align: justify; font-family: "Times New Roman", Times, serif; font-size: 10pt;"><b>Concentration</b><b>s and related risks</b></p> </td></tr> </tbody></table> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"> </p> <p style="font-family: "Times New Roman", Times, serif; font-size: 10pt; margin: 0pt 4.5pt 0pt 0pt; text-align: left; text-indent: 36pt;">We maintain cash balances at financial institutions located in various states. We have cash balances at <em style="font: inherit;">two</em> banks totaling approximately $40 million that is in excess of FDIC insurance of <em style="font: inherit;">$250,000</em> per bank.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"> </p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:36pt;">Financial instruments that could potentially subject us to concentrations of credit risk are trade accounts receivable; however, such risks are limited due to the large number of customers comprising our customer base and their dispersion across geographic regions. We have approximately 16 customers with accounts receivable balances of between $1 million and $10 million and <em style="font: inherit;">one</em> customer with a balance of approximately $15 million.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"> </p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:36pt;">We have several large customers that account for a significant portion of our sales. Our top <span style="-sec-ix-hidden:c67607109"><span style="-sec-ix-hidden:c67607110"><span style="-sec-ix-hidden:c67607112">ten</span></span></span> customers accounted for 43%, 43% and 43% of our sales during fiscal years <em style="font: inherit;">2020,</em> <em style="font: inherit;">2019</em> and <em style="font: inherit;">2018,</em> respectively, with our largest customer accounting for 13% of our sales in <em style="font: inherit;">2020,</em> 11% of our sales in <em style="font: inherit;">2019</em> and <span style="-sec-ix-hidden:c67607127">9</span>-<em style="font: inherit;">1/2%</em> of our sales in <em style="font: inherit;">2018.</em> Three of the <em style="font: inherit;">ten</em> customers in <em style="font: inherit;">2020</em> are food distributors who sell our product to many end users.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"> </p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:36pt;">About 28% of our employees are covered by collective bargaining agreements.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"> </p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:36pt;"><em style="font: inherit;">None</em> of our vendors supplied more than <em style="font: inherit;">10%</em> of our ingredients and packaging in <em style="font: inherit;">2020,</em> <em style="font: inherit;">2019</em> or <em style="font: inherit;">2018.</em></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin-bottom:0pt;margin-left:0pt;margin-top:0pt;text-align:center;"> </p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:36pt;">Virtually all of our accounts receivable are due from trade customers. Credit is extended based on evaluation of our customers’ financial condition and collateral is <em style="font: inherit;">not</em> required. Accounts receivable payment terms vary and are stated in the financial statements at amounts due from customers net of an allowance for doubtful accounts. At <em style="font: inherit;"> September 26, 2020 </em>and <em style="font: inherit;"> September 28, 2019, </em>our accounts receivable were $126,587,000 and $140,938,000, net of an allowance for doubtful accounts of $1,388,000 and $572,000. Accounts receivable outstanding longer than the payment terms are considered past due. We determine our allowance by considering a number of factors, including the length of time trade accounts receivable are past due, our previous loss history, customers’ current ability to pay their obligations to us, and the condition of the general economy and the industry as a whole. We write off accounts receivable when they become uncollectible, and payments subsequently received on such receivables are credited to the allowance for doubtful accounts.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b> </b></p>
CY2020Q3	us-gaap	Cash Uninsured Amount CashUninsuredAmount	40000000	USD
CY2020Q3	jjsf	Employees Covered Under Collective Bargaining Agreement Percentage EmployeesCoveredUnderCollectiveBargainingAgreementPercentage	0.28	pure
CY2020Q3	us-gaap	Accounts Receivable Net AccountsReceivableNet	126587000	USD
CY2019Q3	us-gaap	Accounts Receivable Net AccountsReceivableNet	140938000	USD
CY2020Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1388000	USD
CY2019Q3	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	572000	USD
CY2020Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	360000	USD
CY2020Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	267000	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	279000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	12000	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	414000	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	54000	USD
CY2020Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	360000	USD
CY2018	us-gaap	Income Tax Expense Benefit Continuing Operations Adjustment Of Deferred Tax Asset Liability IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability	-20700000	USD
CY2018	jjsf	Income Tax Expense Benefit Continuing Operations Changed In Tax Rate Tax Cut And Jobs Act IncomeTaxExpenseBenefitContinuingOperationsChangedInTaxRateTaxCutAndJobsAct	-8800000	USD
CY2018	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	1200000	USD
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.277	pure
CY2019	jjsf	Effective Income Tax Rate Reconciliation Changed In Prior Tax For Repatriation Of Foreign Earnings Amount EffectiveIncomeTaxRateReconciliationChangedInPriorTaxForRepatriationOfForeignEarningsAmount	-885000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.258	pure
CY2020	jjsf	Effective Income Tax Rate Reconciliation State Deferred Taxes And Provision To Return Adjustment Amount EffectiveIncomeTaxRateReconciliationStateDeferredTaxesAndProvisionToReturnAdjustmentAmount	2200000	USD
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.250	pure
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	18305000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	18901000
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.97
CY2020	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	131000
CY2020	jjsf	Effect Of Dilutive Securities Options Per Share EffectOfDilutiveSecuritiesOptionsPerShare	-0.01
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	18305000	USD
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19032000
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.96
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	341849
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	94819000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	18812000
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.04
CY2019	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	147000
CY2019	jjsf	Effect Of Dilutive Securities Options Per Share EffectOfDilutiveSecuritiesOptionsPerShare	-0.04
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	94819000	USD
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	18959000
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.00
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	162070
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	103596000	USD
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	18694000
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.54
CY2018	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	123000
CY2018	jjsf	Effect Of Dilutive Securities Options Per Share EffectOfDilutiveSecuritiesOptionsPerShare	-0.03
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	103596000	USD
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	18817000
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.51
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1000
CY2019Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	36000	USD
CY2020	jjsf	Allocated Share Based Compensation Expense Benefit Net Of Tax AllocatedShareBasedCompensationExpenseBenefitNetOfTax	3330000	USD
CY2019	jjsf	Allocated Share Based Compensation Expense Benefit Net Of Tax AllocatedShareBasedCompensationExpenseBenefitNetOfTax	2199000	USD
CY2018	jjsf	Allocated Share Based Compensation Expense Benefit Net Of Tax AllocatedShareBasedCompensationExpenseBenefitNetOfTax	1923000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1265000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2030000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1935000	USD
CY2020Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	5600000	USD
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.174	pure
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.172	pure
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.174	pure
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.03	pure
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.021	pure
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.018	pure
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.012	pure
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.013	pure
CY2020	jjsf	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Forfeiture Rate SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedForfeitureRate	0.08	pure
CY2019	jjsf	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Forfeiture Rate SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedForfeitureRate	0.08	pure
CY2018	jjsf	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Forfeiture Rate SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedForfeitureRate	0.10	pure
CY2020	us-gaap	Advertising Expense AdvertisingExpense	6461000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	5938000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	5805000	USD
CY2020Q3	us-gaap	Unrecorded Unconditional Purchase Obligation Balance Sheet Amount UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount	75000000	USD
CY2020	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	680000	USD
CY2019	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	645000	USD
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	623000	USD
CY2020	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<table border="0" cellpadding="0" cellspacing="0" style="width: 100%; text-indent: 0px;"><tbody><tr style="vertical-align: top;"><td style="width: 27pt;"><p style="margin: 0pt; text-align: justify; font-family: "Times New Roman", Times, serif; font-size: 10pt;"><b><em style="font: inherit;">18.</em> </b></p> </td><td> <p style="margin: 0pt; text-align: justify; font-family: "Times New Roman", Times, serif; font-size: 10pt;"><b>Reclassifications</b></p> </td></tr> </tbody></table> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b> </b></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:36pt;">Certain prior year financial statement amounts have been reclassified to be consistent with the presentation for the current year.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"> </p>
CY2020Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Assets Receivables BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables	792000	USD
CY2020Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Inventory BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory	943000	USD
CY2020Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	6573000	USD
CY2020Q1	us-gaap	Goodwill Goodwill	19322000	USD
CY2020Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Accounts Payable BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable	320000	USD
CY2020Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet	57212000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	68078000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	1015000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	32000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	69061000	USD
CY2020Q3	jjsf	Marketable Securities Availableforsale Amortized Cost MarketableSecuritiesAvailableforsaleAmortizedCost	15184000	USD
CY2020Q3	jjsf	Marketable Securities Availableforsale Accumulated Gross Unrealized Gain Before Tax MarketableSecuritiesAvailableforsaleAccumulatedGrossUnrealizedGainBeforeTax	116000	USD
CY2020Q3	jjsf	Marketable Securities Availableforsale Accumulated Gross Unrealized Loss Before Tax MarketableSecuritiesAvailableforsaleAccumulatedGrossUnrealizedLossBeforeTax	1324000	USD
CY2020Q3	jjsf	Marketable Securities Availableforsale Fair Value MarketableSecuritiesAvailableforsaleFairValue	13976000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment	130451000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	1210000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	131625000	USD
CY2019Q3	jjsf	Marketable Securities Availableforsale Amortized Cost MarketableSecuritiesAvailableforsaleAmortizedCost	20147000	USD
CY2019Q3	jjsf	Marketable Securities Availableforsale Accumulated Gross Unrealized Gain Before Tax MarketableSecuritiesAvailableforsaleAccumulatedGrossUnrealizedGainBeforeTax	266000	USD
CY2019Q3	jjsf	Marketable Securities Availableforsale Accumulated Gross Unrealized Loss Before Tax MarketableSecuritiesAvailableforsaleAccumulatedGrossUnrealizedLossBeforeTax	510000	USD
CY2019Q3	jjsf	Marketable Securities Availableforsale Fair Value MarketableSecuritiesAvailableforsaleFairValue	19903000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	51151000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	51815000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount	51091000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	51325000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	16927000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	17246000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsNetCarryingAmount	79360000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	80300000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	0	USD
CY2020Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	0	USD
CY2019Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsNetCarryingAmount	0	USD
CY2019Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	0	USD
CY2020Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	68078000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	69061000	USD
CY2019Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	130451000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	131625000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Current HeldToMaturitySecuritiesCurrent	51151000	USD
CY2020Q3	jjsf	Held To Maturity Securities Fair Value Current HeldToMaturitySecuritiesFairValueCurrent	51815000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Current HeldToMaturitySecuritiesCurrent	51091000	USD
CY2019Q3	jjsf	Held To Maturity Securities Fair Value Current HeldToMaturitySecuritiesFairValueCurrent	51325000	USD
CY2020Q3	us-gaap	Held To Maturity Securities Noncurrent HeldToMaturitySecuritiesNoncurrent	16927000	USD
CY2020Q3	jjsf	Held To Maturity Securities Fair Value Noncurrent HeldToMaturitySecuritiesFairValueNoncurrent	17246000	USD
CY2019Q3	us-gaap	Held To Maturity Securities Noncurrent HeldToMaturitySecuritiesNoncurrent	79360000	USD
CY2019Q3	jjsf	Held To Maturity Securities Fair Value Noncurrent HeldToMaturitySecuritiesFairValueNoncurrent	80300000	USD
CY2020	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	73226000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	39158000	USD
CY2018	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	75302000	USD
CY2020	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	83000	USD
CY2019	us-gaap	Marketable Securities Gain Loss MarketableSecuritiesGainLoss	27000	USD
CY2018	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-140000	USD
CY2020	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-965000	USD
CY2019	us-gaap	Marketable Securities Unrealized Gain Loss MarketableSecuritiesUnrealizedGainLoss	-431000	USD
CY2020Q3	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	40184000	USD
CY2019Q3	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	53225000	USD
CY2020Q3	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	24550000	USD
CY2019Q3	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	22146000	USD
CY2020Q3	us-gaap	Inventory Supplies Net Of Reserves InventorySuppliesNetOfReserves	10545000	USD
CY2019Q3	us-gaap	Inventory Supplies Net Of Reserves InventorySuppliesNetOfReserves	9703000	USD
CY2020Q3	us-gaap	Inventory Parts And Components Net Of Reserves InventoryPartsAndComponentsNetOfReserves	33644000	USD
CY2019Q3	us-gaap	Inventory Parts And Components Net Of Reserves InventoryPartsAndComponentsNetOfReserves	31091000	USD
CY2020Q3	us-gaap	Inventory Net InventoryNet	108923000	USD
CY2019Q3	us-gaap	Inventory Net InventoryNet	116165000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	717261000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	676724000	USD
CY2020Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	455645000	USD
CY2019Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	423276000	USD
CY2020Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	261616000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	253448000	USD
CY2020	us-gaap	Depreciation Depreciation	49830000	USD
CY2019	us-gaap	Depreciation Depreciation	45225000	USD
CY2018	us-gaap	Depreciation Depreciation	42939000	USD
CY2020Q3	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	102092000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	20470000	USD
CY2019Q3	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	72613000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	17691000	USD
CY2020	us-gaap	Impairment Of Intangible Assets Excluding Goodwill ImpairmentOfIntangibleAssetsExcludingGoodwill	0	USD
CY2018	jjsf	Intangible Assets Acquired IntangibleAssetsAcquired	0	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3202000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3320000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3510000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	2500000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	2300000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	2000000	USD
CY2020Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1400000	USD
CY2020	us-gaap	Acquired Finite Lived Intangible Assets Weighted Average Useful Life AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife	P10Y8M12D
CY2020Q3	us-gaap	Goodwill Goodwill	121833000	USD
CY2019Q3	us-gaap	Goodwill Goodwill	102511000	USD
CY2020	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	USD
CY2016Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	50000000	USD
CY2019Q3	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	349000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	156000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	91000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	95000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	26000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	849000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	514000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-110000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	2464000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	3716000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2493000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	9598000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-10383000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	0	USD
CY2020Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	717000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	1992000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	14078000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	16591000	USD
CY2020	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	193000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	2111000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	2512000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-1517000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	5971000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	5836000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	668000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	22160000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	24939000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	3139000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	6285000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-14613000	USD
CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-536000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3161000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	31758000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14556000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21	pure
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.245	pure
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	4508000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	26581000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	28947000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-1285000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	6664000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	7212000	USD
CY2020	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	-0	USD
CY2019	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	-0	USD
CY2018	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	1470000	USD
CY2020	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2019	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-20670000	USD
CY2020	jjsf	Effective Income Tax Rate Reconciliation Rate Differential Current And Deferred Amount EffectiveIncomeTaxRateReconciliationRateDifferentialCurrentAndDeferredAmount	0	USD
CY2019	jjsf	Effective Income Tax Rate Reconciliation Rate Differential Current And Deferred Amount EffectiveIncomeTaxRateReconciliationRateDifferentialCurrentAndDeferredAmount	0	USD
CY2018	jjsf	Effective Income Tax Rate Reconciliation Rate Differential Current And Deferred Amount EffectiveIncomeTaxRateReconciliationRateDifferentialCurrentAndDeferredAmount	-1236000	USD
CY2020	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	0	USD
CY2019	jjsf	Effective Income Tax Rate Reconciliation Changed In Prior Tax For Repatriation Of Foreign Earnings Amount EffectiveIncomeTaxRateReconciliationChangedInPriorTaxForRepatriationOfForeignEarningsAmount	-885000	USD
CY2018	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	1200000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	0	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	20000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Contingencies IncomeTaxReconciliationTaxContingencies	20000	USD
CY2020	jjsf	Effective Income Tax Rate Reconciliation Sharebased Compensation Amount EffectiveIncomeTaxRateReconciliationSharebasedCompensationAmount	-183000	USD
CY2019	jjsf	Effective Income Tax Rate Reconciliation Sharebased Compensation Amount EffectiveIncomeTaxRateReconciliationSharebasedCompensationAmount	-777000	USD
CY2018	jjsf	Effective Income Tax Rate Reconciliation Sharebased Compensation Amount EffectiveIncomeTaxRateReconciliationSharebasedCompensationAmount	-696000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	0	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	490000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	514000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	121000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-335000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	735000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3161000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	31758000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14556000	USD
CY2018	us-gaap	Income Tax Expense Benefit Continuing Operations Adjustment Of Deferred Tax Asset Liability IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability	-20700000	USD
CY2018	jjsf	Income Tax Expense Benefit Continuing Operations Changed In Tax Rate Tax Cut And Jobs Act IncomeTaxExpenseBenefitContinuingOperationsChangedInTaxRateTaxCutAndJobsAct	-8800000	USD
CY2018	us-gaap	Income Tax Reconciliation Repatriation Of Foreign Earnings IncomeTaxReconciliationRepatriationOfForeignEarnings	1200000	USD
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.277	pure
CY2019	jjsf	Effective Income Tax Rate Reconciliation Changed In Prior Tax For Repatriation Of Foreign Earnings Amount EffectiveIncomeTaxRateReconciliationChangedInPriorTaxForRepatriationOfForeignEarningsAmount	-885000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.258	pure
CY2020	jjsf	Effective Income Tax Rate Reconciliation State Deferred Taxes And Provision To Return Adjustment Amount EffectiveIncomeTaxRateReconciliationStateDeferredTaxesAndProvisionToReturnAdjustmentAmount	2200000	USD
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.250	pure
CY2020Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	93786000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Compensated Absences DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences	1460000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Compensated Absences DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsCompensatedAbsences	1281000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	161000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Capital Loss Carryforwards DeferredTaxAssetsCapitalLossCarryforwards	1038000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	345000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	0	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Self Insurance DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance	3060000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Self Insurance DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsSelfInsurance	2454000	USD
CY2020Q3	jjsf	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	16368000	USD
CY2019Q3	jjsf	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	0	USD
CY2020Q3	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	105000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	485000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	2863000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Loss Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves	1554000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	1058000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	994000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	1637000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	1607000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	697000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	776000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses	1721000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses	0	USD
CY2020Q3	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	404000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	0	USD
CY2020Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	29879000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	10189000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	506000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	1038000	USD
CY2020Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	29373000	USD
CY2019Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	9151000	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	29587000	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	27267000	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	48303000	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	43804000	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	15605000	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	0	USD
CY2020Q3	jjsf	Deferred Tax Liabilities Accounting Method Change481 A DeferredTaxLiabilitiesAccountingMethodChange481A	291000	USD
CY2019Q3	jjsf	Deferred Tax Liabilities Accounting Method Change481 A DeferredTaxLiabilitiesAccountingMethodChange481A	0	USD
CY2019Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	71071000	USD
CY2020Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	64413000	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	61920000	USD
CY2018Q3	us-gaap	Tax Cuts And Jobs Act Of2017 Transition Tax For Accumulated Foreign Earnings Liability TaxCutsAndJobsActOf2017TransitionTaxForAccumulatedForeignEarningsLiability	315000	USD
CY2020Q3	us-gaap	Accrued Insurance Current And Noncurrent AccruedInsuranceCurrentAndNoncurrent	12800000	USD
CY2019Q3	us-gaap	Accrued Insurance Current And Noncurrent AccruedInsuranceCurrentAndNoncurrent	8700000	USD
CY2019Q3	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	9275000	USD
CY2020Q3	dei	Entity Number Of Employees EntityNumberOfEmployees	1600	pure
CY2020Q3	us-gaap	Self Insurance Reserve SelfInsuranceReserve	1737000	USD
CY2019Q3	us-gaap	Self Insurance Reserve SelfInsuranceReserve	1392000	USD
CY2018	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	20604
CY2018	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	2794027	USD
CY2020	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	65648
CY2020	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	8972292	USD
CY2020Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	454000
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Discount From Market Price Offering Date ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceOfferingDate	0.85	pure
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	5700000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	9400000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	6800000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	6400000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	12700000	USD
CY2018	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	7400000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	1100000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	1800000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	1700000	USD
CY2020	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	2390000	USD
CY2019	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	2433000	USD
CY2018	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	2106000	USD
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.89
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	53048000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	48610000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	46477000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	17194000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	116956000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	110775000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	57817000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	29000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	36000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	43000	USD
CY2020	us-gaap	Income Taxes Paid IncomeTaxesPaid	11556000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	23002000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	25820000	USD
CY2020	jjsf	Right Of Use Asset Obtained In Exchange For Lease Liability RightOfUseAssetObtainedInExchangeForLeaseLiability	685000	USD
CY2019	jjsf	Right Of Use Asset Obtained In Exchange For Lease Liability RightOfUseAssetObtainedInExchangeForLeaseLiability	336000	USD
CY2018	jjsf	Right Of Use Asset Obtained In Exchange For Lease Liability RightOfUseAssetObtainedInExchangeForLeaseLiability	203000	USD
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	pure
CY2020	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	pure
CY2020	us-gaap	Revenues Revenues	1022038000	USD
CY2019	us-gaap	Revenues Revenues	1186187000	USD
CY2018	us-gaap	Revenues Revenues	1138265000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	57128000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	60022000	USD
CY2020Q3	us-gaap	Assets Assets	1056553000	USD
CY2019Q3	us-gaap	Assets Assets	1019339000	USD
CY2018Q3	us-gaap	Assets Assets	938233000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	282897000	USD
CY2019Q4	us-gaap	Gross Profit GrossProfit	77861000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	17059000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	272042000	USD
CY2020Q1	us-gaap	Gross Profit GrossProfit	69443000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	7309000	USD
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.38
CY2020Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	214563000	USD
CY2020Q2	us-gaap	Gross Profit GrossProfit	37196000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-12647000	USD
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.67
CY2020Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	252536000	USD
CY2020Q3	us-gaap	Gross Profit GrossProfit	53927000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	6584000	USD
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.35
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1022038000	USD
CY2020	us-gaap	Gross Profit GrossProfit	238427000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	18305000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	271612000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	76863000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	17526000	USD
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.93
CY2019Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	276302000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	79248000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	20354000	USD
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.08
CY2019Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	326701000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	101349000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	30872000	USD
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.63
CY2019Q3	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	311872000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	92941000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	26067000	USD
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.36
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1186487000	USD
CY2019	us-gaap	Gross Profit GrossProfit	350401000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	94819000	USD
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.00
CY2020Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.033	pure
CY2020Q3	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.031	pure
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	17250000	USD
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	337000	USD
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	29000	USD
CY2020	jjsf	Finance Lease Cost Total FinanceLeaseCostTotal	366000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	0	USD
CY2020	us-gaap	Lease Cost LeaseCost	17616000	USD
CY2020Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	717000	USD
CY2020Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y1M6D
CY2020Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	58110000	USD
CY2020Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	13173000	USD
CY2020Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	47688000	USD
CY2020Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	60861000	USD
CY2020Q3	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	684000	USD
CY2020Q3	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	349000	USD
CY2020Q3	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	368000	USD
CY2020Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	717000	USD
CY2020	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	6900000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	17324000	USD
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	340000	USD
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	29000	USD
CY2020	jjsf	Lease Liabilities Removed Due To Purchase Of Leased Asset LeaseLiabilitiesRemovedDueToPurchaseOfLeasedAsset	0	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths	14765000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due In Next Rolling Twelve Months FinanceLeaseLiabilityPaymentsDueInNextRollingTwelveMonths	369000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Two LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo	12491000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due In Rolling Year Two FinanceLeaseLiabilityPaymentsDueInRollingYearTwo	168000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Three LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree	10637000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due In Rolling Year Three FinanceLeaseLiabilityPaymentsDueInRollingYearThree	98000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Four LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour	8263000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due In Rolling Year Four FinanceLeaseLiabilityPaymentsDueInRollingYearFour	98000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due In Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive	5204000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due In Rolling Year Five FinanceLeaseLiabilityPaymentsDueInRollingYearFive	26000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due After Rolling Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive	16288000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due In Rolling After Year Five FinanceLeaseLiabilityPaymentsDueInRollingAfterYearFive	0	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	67649000	USD
CY2020Q3	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	759000	USD
CY2020Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	6788000	USD
CY2020Q3	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	42000	USD
CY2020Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	60861000	USD
CY2020Q3	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P3Y6M
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	14814000	USD
CY2019Q3	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	339000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	12686000	USD
CY2019Q3	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	349000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	10491000	USD
CY2019Q3	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	156000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	8971000	USD
CY2019Q3	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	91000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	6988000	USD
CY2019Q3	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	95000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	25588000	USD
CY2019Q3	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	27000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	79538000	USD
CY2019Q3	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	1057000	USD
CY2019Q3	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	1057000	USD
CY2020Q3	jjsf	Cash Cash Equivalents And Marketable Securities CashCashEquivalentsAndMarketableSecurities	278000000	USD
CY2019Q3	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	572000	USD
CY2020	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	1105000	USD
CY2020	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	289000	USD
CY2020Q3	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	1388000	USD
CY2018Q3	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	400000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	389000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	217000	USD
CY2019Q3	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	572000	USD
CY2017Q3	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	359000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	259000	USD
CY2018	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	218000	USD
CY2018Q3	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	400000	USD

Files In Submission

Name	View Source	Status
0001437749-20-024447-index-headers.html	Edgar Link	pending
0001437749-20-024447-index.html	Edgar Link	pending
0001437749-20-024447.txt	Edgar Link	pending
0001437749-20-024447-xbrl.zip	Edgar Link	pending
annual_2020backcover.jpg	Edgar Link	pending
annual_2020cover.jpg	Edgar Link	pending
annual_2020insidebackcover.jpg	Edgar Link	pending
annual_2020insidecoverfront.jpg	Edgar Link	pending
annual_collagepage.jpg	Edgar Link	pending
annual_presletter2020.jpg	Edgar Link	pending
ex_214648.htm	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
graph01.jpg	Edgar Link	pending
jjsf-20200926.xsd	Edgar Link	pending
jjsf-20200926_cal.xml	Edgar Link	unprocessable
jjsf-20200926_def.xml	Edgar Link	unprocessable
jjsf-20200926_lab.xml	Edgar Link	unprocessable
jjsf-20200926_pre.xml	Edgar Link	unprocessable
jjsf20200926_10k.htm	Edgar Link	pending
jjsf20200926_10k_htm.xml	Edgar Link	completed
MetaLinks.json	Edgar Link	pending
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Show.js	Edgar Link	pending

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$JJSF
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2020 Q3 Form 10-K Financial Statement

#000143774920024447 Filed on November 25, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$JJSF J&J SNACK FOODS CORP Stock $jjsf

2020 Q3 Form 10-K Financial Statement

#000143774920024447 Filed on November 25, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$JJSF
J&J SNACK FOODS CORP Stock $jjsf