$IIIN
INSTEEL INDUSTRIES INC Stock $iiin

$iiin Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000143774921024481 Filed on October 28, 2021

Income Statement

Concept	2021 Q4	2021	2020 Q4
Revenue	$171.3M	$590.6M	$138.2M
YoY Change	23.92%	24.96%	41.64%
Cost Of Revenue	$131.3M	$469.1M	$118.8M
YoY Change	10.55%	12.53%	30.07%
Gross Profit	$39.92M	$121.5M	$19.50M
YoY Change	104.71%	117.88%	212.65%
Gross Profit Margin	23.31%	20.58%	14.11%
Selling, General & Admin	$7.321M	$32.39M	$9.300M
YoY Change	-21.28%	3.32%	61.91%
% of Gross Profit	18.34%	26.65%	47.69%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$3.693M	$14.52M	$3.630M
YoY Change	1.74%	1.87%	4.37%
% of Gross Profit	9.25%	11.95%	18.62%
Operating Expenses	$7.321M	$32.39M	$9.300M
YoY Change	-21.28%	3.32%	61.91%
Operating Profit	$32.60M	$89.16M	$10.20M
YoY Change	219.59%	264.83%	1968.97%
Interest Expense	-$17.00K	$96.00K	$0.00
YoY Change		-9.43%	-100.0%
% of Operating Profit	-0.05%	0.11%	0.0%
Other Income/Expense, Net	$9.000K	-$114.0K
YoY Change		-109.09%
Pretax Income	$32.52M	$86.10M	$9.400M
YoY Change	245.98%	256.24%	1209.19%
Income Tax	$7.370M	$19.49M	$2.000M
% Of Pretax Income	22.66%	22.64%	21.28%
Net Earnings	$25.15M	$66.61M	$7.400M
YoY Change	239.89%	250.41%	1233.33%
Net Earnings / Revenue	14.69%	11.28%	5.35%
Basic Earnings Per Share		$3.44
Diluted Earnings Per Share	$1.282M	$3.41	$381.4K
COMMON SHARES
Basic Shares Outstanding	19.41M	19.34M	19.31M
Diluted Shares Outstanding		19.53M

Balance Sheet

Concept	2021 Q4	2021	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$89.88M	$89.88M	$68.70M
YoY Change	30.84%	30.84%	2.38%
Cash & Equivalents	$89.88M	$89.88M	$68.69M
Short-Term Investments
Other Short-Term Assets	$10.06M	$10.06M	$5.570M
YoY Change	80.54%	79.57%	-13.91%
Inventory	$79.05M	$79.05M	$68.96M
Prepaid Expenses
Receivables	$67.92M	$67.92M	$53.82M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$246.9M	$246.9M	$197.0M
YoY Change	25.31%	25.33%	13.08%
LONG-TERM ASSETS
Property, Plant & Equipment	$105.6M	$107.3M	$101.4M
YoY Change	4.17%	3.31%	-1.24%
Goodwill	$9.745M		$9.745M
YoY Change	0.0%		17.51%
Intangibles	$7.668M		$8.567M
YoY Change	-10.49%		2.76%
Long-Term Investments
YoY Change
Other Assets	$20.77M	$19.05M	$21.16M
YoY Change	-1.86%	2.42%	63.84%
Total Long-Term Assets	$143.8M	$143.8M	$140.9M
YoY Change	2.09%	2.06%	6.55%
TOTAL ASSETS
Total Short-Term Assets	$246.9M	$246.9M	$197.0M
Total Long-Term Assets	$143.8M	$143.8M	$140.9M
Total Assets	$390.7M	$390.7M	$337.9M
YoY Change	15.63%	15.63%	10.26%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$49.44M	$49.44M	$38.96M
YoY Change	26.9%	26.78%	22.06%
Accrued Expenses	$19.41M	$13.04M	$14.72M
YoY Change	31.86%	9.56%	75.98%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$68.85M	$68.85M	$53.68M
YoY Change	28.26%	28.21%	33.26%
LONG-TERM LIABILITIES
Long-Term Debt	$0.00	$0.00	$0.00
YoY Change
Other Long-Term Liabilities	$19.82M	$13.53M	$19.42M
YoY Change	2.07%	4.86%	-2.84%
Total Long-Term Liabilities	$19.82M	$13.53M	$19.42M
YoY Change	2.07%	4.86%	-2.84%
TOTAL LIABILITIES
Total Short-Term Liabilities	$68.85M	$68.85M	$53.68M
Total Long-Term Liabilities	$19.82M	$13.53M	$19.42M
Total Liabilities	$88.67M	$88.67M	$73.10M
YoY Change	21.3%	21.3%	21.28%
SHAREHOLDERS EQUITY
Retained Earnings	$206.4M		$171.1M
YoY Change	20.64%		10.83%
Common Stock	$98.10M		$95.69M
YoY Change	2.51%		1.71%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$302.0M	$302.0M	$264.8M
YoY Change
Total Liabilities & Shareholders Equity	$390.7M	$390.7M	$337.9M
YoY Change	15.63%	15.63%	10.26%

Cashflow Statement

Concept	2021 Q4	2021	2020 Q4
OPERATING ACTIVITIES
Net Income	$25.15M	$66.61M	$7.400M
YoY Change	239.89%	250.41%	1233.33%
Depreciation, Depletion And Amortization	$3.693M	$14.52M	$3.630M
YoY Change	1.74%	1.87%	4.37%
Cash From Operating Activities	$4.416M	$69.88M	$11.59M
YoY Change	-61.9%	24.29%	-60.81%
INVESTING ACTIVITIES
Capital Expenditures	-$3.819M	-$17.50M	-$3.660M
YoY Change	4.34%	146.13%	510.0%
Acquisitions
YoY Change
Other Investing Activities	-$102.0K	-$305.0K	$120.0K
YoY Change	-185.0%	-98.1%	-400.0%
Cash From Investing Activities	-$3.921M	-$17.81M	-$3.540M
YoY Change	10.76%	-23.17%	451.4%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net		$297.0K
YoY Change		-7.76%
Cash From Financing Activities	-438.0K	-$30.88M	-730.0K
YoY Change	-40.0%	1114.2%
NET CHANGE
Cash From Operating Activities	4.416M	$69.88M	11.59M
Cash From Investing Activities	-3.921M	-$17.81M	-3.540M
Cash From Financing Activities	-438.0K	-$30.88M	-730.0K
Net Change In Cash	57.00K	$21.20M	7.320M
YoY Change	-99.22%	-30.52%	-74.7%
FREE CASH FLOW
Cash From Operating Activities	$4.416M	$69.88M	$11.59M
Capital Expenditures	-$3.819M	-$17.50M	-$3.660M
Free Cash Flow	$8.235M	$87.38M	$15.25M
YoY Change	-46.0%	37.96%	-49.46%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	93000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	-239000	USD
CY2021Q4	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue	0
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y5M23D
CY2021	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	pure
CY2020	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	0	USD
CY2020	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	0
CY2019	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	0
CY2019	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	239000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-93000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	154000	USD
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	590601000	USD
CY2020	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	472618000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	455713000	USD
CY2021	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	469053000	USD
CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	416831000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	425652000	USD
CY2021	us-gaap	Gross Profit GrossProfit	121548000	USD
CY2020	us-gaap	Gross Profit GrossProfit	55787000	USD
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	19408000
CY2019	us-gaap	Gross Profit GrossProfit	30061000	USD
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	19304000
CY2021	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	32388000	USD
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	19304000
CY2020	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	31348000	USD
CY2021	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
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CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	24504000	USD
CY2020	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	195000	USD
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CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-114000	USD
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CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1254000	USD
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CY2019	us-gaap	Interest Expense InterestExpense	168000	USD
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CY2021	us-gaap	Net Income Loss NetIncomeLoss	66610000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	19009000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	5598000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	14521000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	14255000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	13553000	USD
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	65000	USD
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	66000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	65000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	1988000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	2028000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	2057000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-118000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-424000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1798000	USD
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1415000	USD
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	343000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2021	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-125000	USD
CY2020	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	1114000	USD
CY2019	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	1688000	USD
CY2021	iiin	Increase In Cash Surrender Value Of Life Insurance Policies Over Premiums Paid IncreaseInCashSurrenderValueOfLifeInsurancePoliciesOverPremiumsPaid	1533000	USD
CY2020	iiin	Increase In Cash Surrender Value Of Life Insurance Policies Over Premiums Paid IncreaseInCashSurrenderValueOfLifeInsurancePoliciesOverPremiumsPaid	243000	USD
CY2019	iiin	Increase In Cash Surrender Value Of Life Insurance Policies Over Premiums Paid IncreaseInCashSurrenderValueOfLifeInsurancePoliciesOverPremiumsPaid	187000	USD
CY2021	iiin	Gain From Life Insurance Proceeds GainFromLifeInsuranceProceeds	-0	USD
CY2020	iiin	Gain From Life Insurance Proceeds GainFromLifeInsuranceProceeds	200000	USD
CY2019	iiin	Gain From Life Insurance Proceeds GainFromLifeInsuranceProceeds	-0	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	14100000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	5806000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-7302000	USD
CY2021	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	10086000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-17805000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-23174000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-9556000	USD
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	297000	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	322000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	44333000	USD
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	297000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	322000	USD
CY2021	iiin	Proceeds From Assets Held For Sale ProceedsFromAssetsHeldForSale	79000	USD
CY2020	iiin	Proceeds From Assets Held For Sale ProceedsFromAssetsHeldForSale	2186000	USD
CY2019	iiin	Proceeds From Assets Held For Sale ProceedsFromAssetsHeldForSale	0	USD
CY2021	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	USD
CY2020	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	200000	USD
CY2019	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	0	USD
CY2020	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-5060000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-23306000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	11891000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	20159000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-42592000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	900000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-3091000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	2604000	USD
CY2021	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	3268000	USD
CY2020	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	37215000	USD
CY2019	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	1010000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	69878000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	56224000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	6608000	USD
CY2021	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	-0	USD
CY2020	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	18356000	USD
CY2019	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	-0	USD
CY2021	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	17500000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	7114000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	10512000	USD
CY2021	iiin	Proceeds From Property Insurance ProceedsFromPropertyInsurance	0	USD
CY2020	iiin	Proceeds From Property Insurance ProceedsFromPropertyInsurance	0	USD
CY2019	iiin	Proceeds From Property Insurance ProceedsFromPropertyInsurance	1192000	USD
CY2021	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	0	USD
CY2020	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	40000	USD
CY2019	us-gaap	Proceeds From Insurance Settlement Investing Activities ProceedsFromInsuranceSettlementInvestingActivities	19000	USD
CY2021	iiin	Proceeds From Surrender Of Life Insurance Policies ProceedsFromSurrenderOfLifeInsurancePolicies	32000	USD
CY2020	iiin	Proceeds From Surrender Of Life Insurance Policies ProceedsFromSurrenderOfLifeInsurancePolicies	260000	USD
CY2019	iiin	Proceeds From Surrender Of Life Insurance Policies ProceedsFromSurrenderOfLifeInsurancePolicies	67000	USD
CY2021	iiin	Increase In Cash Surrender Value Of Life Insurance Policies IncreaseInCashSurrenderValueOfLifeInsurancePolicies	416000	USD
CY2020	iiin	Increase In Cash Surrender Value Of Life Insurance Policies IncreaseInCashSurrenderValueOfLifeInsurancePolicies	390000	USD
CY2019	iiin	Increase In Cash Surrender Value Of Life Insurance Policies IncreaseInCashSurrenderValueOfLifeInsurancePolicies	322000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	44333000	USD
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	31294000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	2313000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	2310000	USD
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1082000	USD
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2021	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	665000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	230000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	239000	USD
CY2021	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	-0	USD
CY2020	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	-0	USD
CY2019	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	263000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-30877000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2543000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2812000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	21196000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	30507000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-5760000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	68688000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	38181000	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	43941000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	89884000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	68688000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	38181000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	0	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	0	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	49000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	16799000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1919000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1743000	USD
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	501000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	769000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	377000	USD
CY2021	iiin	Restricted Stock Units And Stock Options Surrendered For Withholding Taxes Payable RestrictedStockUnitsAndStockOptionsSurrenderedForWithholdingTaxesPayable	665000	USD
CY2020	iiin	Restricted Stock Units And Stock Options Surrendered For Withholding Taxes Payable RestrictedStockUnitsAndStockOptionsSurrenderedForWithholdingTaxesPayable	230000	USD
CY2019	iiin	Restricted Stock Units And Stock Options Surrendered For Withholding Taxes Payable RestrictedStockUnitsAndStockOptionsSurrenderedForWithholdingTaxesPayable	239000	USD
CY2021	iiin	Noncash Or Part Noncash Acquisition Accrued Holdback Liability NoncashOrPartNoncashAcquisitionAccruedHoldbackLiability	0	USD
CY2020	iiin	Noncash Or Part Noncash Acquisition Accrued Holdback Liability NoncashOrPartNoncashAcquisitionAccruedHoldbackLiability	1000000	USD
CY2019	iiin	Noncash Or Part Noncash Acquisition Accrued Holdback Liability NoncashOrPartNoncashAcquisitionAccruedHoldbackLiability	0	USD
CY2021	us-gaap	Fiscal Period FiscalPeriod	<p style="font-family: "Times New Roman"; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt; text-indent: 36pt;"><b><i>Fiscal year.</i></b> Our fiscal year is the <em style="font: inherit;">52</em> or <em style="font: inherit;">53</em> weeks ending on the Saturday closest to <em style="font: inherit;"> September 30. </em>Fiscal years <em style="font: inherit;">2021</em> and <em style="font: inherit;">2019</em> were <em style="font: inherit;">52</em>-week periods and fiscal year <em style="font: inherit;">2020</em> was a <em style="font: inherit;">53</em>-week period. All references to years relate to fiscal years rather than calendar years. </p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p>
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<p style="font-family: "Times New Roman"; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt; text-indent: 36pt;"><b><i>Use of estimates.</i></b><b> </b>The preparation of financial statements in conformity with accounting principles generally accepted in the United States (“GAAP”) requires us to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. There is <em style="font: inherit;">no</em> assurance that actual results will <em style="font: inherit;">not</em> differ from these estimates.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p>
CY2021	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<p style="font-family: "Times New Roman"; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt; text-indent: 36pt;"><b><i>Concentration of credit risk. </i></b>Financial instruments that subject us to concentrations of credit risk consist principally of cash and cash equivalents and trade accounts receivable. Our cash is principally concentrated at <em style="font: inherit;">one</em> financial institution, which at times exceeds federally insured limits. We are exposed to credit risk in the event of default by institutions in which our cash and cash equivalents are held and by customers to the extent of the amounts recorded on the balance sheet. We invest excess cash primarily in money market funds, which are highly liquid securities.</p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:justify;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:justify;margin:0pt;text-indent:36pt;">The majority of our accounts receivable are due from customers that are located in the U.S. and are generally <em style="font: inherit;">not</em> secured by collateral depending upon the creditworthiness of the account. We provide an allowance for credit losses based upon our assessment of the credit risk of specific customers, historical trends and other information. We write off accounts receivable when they become uncollectible. There is <em style="font: inherit;">no</em> disproportionate concentration of credit risk.</p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:justify;margin:0pt;"> </p>
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	576000	USD
CY2021	us-gaap	Property Plant And Equipment Impairment PropertyPlantAndEquipmentImpairment	<p style="font-family: "Times New Roman"; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt; text-indent: 36pt;"><b><i>Property, plant and equipment.</i></b> Property, plant and equipment are recorded at cost or fair market value in the case of the assets acquired through acquisitions, or otherwise at reduced values to the extent there have been asset impairment write-downs. Expenditures for maintenance and repairs are charged directly to expense when incurred, while major improvements are capitalized. Depreciation is computed for financial reporting purposes principally by use of the straight-line method over the following estimated useful lives: machinery and equipment, 3 - 15 years; buildings, 10 - 30 years; and land improvements, 5 - 15 years. Depreciation expense was approximately $13.6 million in <em style="font: inherit;">2021,</em> $13.2 million in <em style="font: inherit;">2020</em> and $12.5 million in <em style="font: inherit;">2019</em> and reflected in cost of sales and selling, general and administrative expense (“SG&A expense”) in the consolidated statements of operations. Capitalized software is amortized over the shorter of the estimated useful life or 5 years and reflected in SG&A expense. No interest costs were capitalized in <em style="font: inherit;">2021,</em> <em style="font: inherit;">2020</em> and <em style="font: inherit;">2019.</em></p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p>
CY2021	us-gaap	Depreciation Depreciation	13600000	USD
CY2020	us-gaap	Depreciation Depreciation	13200000	USD
CY2019	us-gaap	Depreciation Depreciation	12500000	USD
CY2021	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	0	USD
CY2021	us-gaap	Asset Impairment Charges AssetImpairmentCharges	1400000	USD
CY2020	us-gaap	Asset Impairment Charges AssetImpairmentCharges	300000	USD
CY2020Q4	us-gaap	Restructuring Reserve RestructuringReserve	171000	USD
CY2021	us-gaap	Restructuring Charges RestructuringCharges	2868000	USD
CY2021	us-gaap	Payments For Restructuring PaymentsForRestructuring	1634000	USD
CY2021	iiin	Restructuring Reserve Noncash Charges RestructuringReserveNoncashCharges	-1415000	USD
CY2021Q4	us-gaap	Restructuring Reserve RestructuringReserve	10000	USD
CY2020	us-gaap	Restructuring Charges RestructuringCharges	1695000	USD
CY2020	us-gaap	Payments For Restructuring PaymentsForRestructuring	1299000	USD
CY2020	iiin	Restructuring Reserve Noncash Charges RestructuringReserveNoncashCharges	-225000	USD
CY2020Q4	us-gaap	Restructuring Reserve RestructuringReserve	171000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	12320000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	4652000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	7668000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	13780000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	5213000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	8567000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	899000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1000000.0	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1100000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	822000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	757000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	751000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	744000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	752000	USD
CY2021	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	65000	USD
CY2020	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	66000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	65000	USD
CY2021Q4	iiin	Amortization Of Financing Costs Next12 Months AmortizationOfFinancingCostsNext12Months	65000	USD
CY2021Q4	iiin	Amortization Of Financing Costs Year2 AmortizationOfFinancingCostsYear2	65000	USD
CY2021Q4	iiin	Amortization Of Financing Costs Year3 AmortizationOfFinancingCostsYear3	41000	USD
CY2021Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Stock Options EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions	497000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y7M24D
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	14.47
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	8.05
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	7.15
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	264000
CY2018Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	29.25
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	129000
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	19.74
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	5000
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	23.95
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	21000	USD
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	388000
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	26.16
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	121000
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	21.08
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	27000
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	25.88
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	482000
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	24.90
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	74000
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	34.76
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	128000
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	21.17
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	2212000	USD
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	428000
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	27.72
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	5006000	USD
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	416000
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice	27.70
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue	4867000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-136000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	149000	USD
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.226	pure
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.214	pure
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	246000
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	28.75
CY2021Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	2604000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	17904000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	5056000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-126000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1707000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	529000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	185000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	19611000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	5585000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	59000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-180000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-288000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1649000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	62000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-118000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-424000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1798000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19493000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5161000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1857000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.249	pure
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	18082000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	5076000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1566000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210	pure
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1544000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.018	pure
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	319000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.013	pure
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	297000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.040	pure
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	-253000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.003	pure
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	128000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.005	pure
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	90000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.012	pure
CY2021	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-134000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.002	pure
CY2020	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-50000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.002	pure
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	24000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.003	pure
CY2021	iiin	Effective Income Tax Rate Reconciliation Net Operating Loss Carryback Cares Act EffectiveIncomeTaxRateReconciliationNetOperatingLossCarrybackCaresAct	0	USD
CY2021	iiin	Effective Income Tax Rate Reconciliation Net Operating Loss Carryback Cares Act Percent EffectiveIncomeTaxRateReconciliationNetOperatingLossCarrybackCaresActPercent	0	pure
CY2020	iiin	Effective Income Tax Rate Reconciliation Net Operating Loss Carryback Cares Act EffectiveIncomeTaxRateReconciliationNetOperatingLossCarrybackCaresAct	-223000	USD
CY2020	iiin	Effective Income Tax Rate Reconciliation Net Operating Loss Carryback Cares Act Percent EffectiveIncomeTaxRateReconciliationNetOperatingLossCarrybackCaresActPercent	-0.009	pure
CY2019	iiin	Effective Income Tax Rate Reconciliation Net Operating Loss Carryback Cares Act EffectiveIncomeTaxRateReconciliationNetOperatingLossCarrybackCaresAct	0	USD
CY2019	iiin	Effective Income Tax Rate Reconciliation Net Operating Loss Carryback Cares Act Percent EffectiveIncomeTaxRateReconciliationNetOperatingLossCarrybackCaresActPercent	0	pure
CY2021	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	0	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	0	pure
CY2020	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	0	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	0	pure
CY2019	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-142000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.019	pure
CY2021	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	254000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.003	pure
CY2020	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-89000	USD
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.003	pure
CY2019	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	22000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.003	pure
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19493000	USD
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.226	pure
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5161000	USD
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.214	pure
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1857000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.249	pure
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	2921000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	2727000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	2280000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	1885000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	1204000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	1328000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	387000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	568000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	54000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	92000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	73000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	207000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	6773000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	6393000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	10901000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	10766000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	1374000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	1217000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	385000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Leasing Arrangements DeferredTaxLiabilitiesLeasingArrangements	566000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Goodwill DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill	409000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Goodwill DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill	412000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	13069000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	12961000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	6296000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	6568000	USD
CY2020	iiin	Income Tax Benefit Cares Act IncomeTaxBenefitCaresAct	223000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	6300000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	6600000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	73000	USD
CY2021	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	134000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	0	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	576000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	542000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	582000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	893000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	818000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	4443000	USD
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	1400000	USD
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	1300000	USD
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	1600000	USD
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	1413000	USD
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	1301000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	579000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1771000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P1Y9M18D
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P2Y3M18D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.041	pure
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.044	pure
CY2019	us-gaap	Net Income Loss NetIncomeLoss	5598000	USD
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.99
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.29
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	19344000
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	19278000
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	19243000
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	1075000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	583000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	129000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	2000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	0	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	0	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	1789000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	64000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	19009000	USD
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	190000
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	105000
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	97000
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19534000
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19383000
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19340000
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.44
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.41
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.98
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.29
CY2021	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	142000
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	369000
CY2019	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	240000
CY2021	us-gaap	Revenues Revenues	590601000	USD
CY2020	us-gaap	Revenues Revenues	472618000	USD
CY2019	us-gaap	Revenues Revenues	455713000	USD
CY2021	us-gaap	Revenues Revenues	590601000	USD
CY2020	us-gaap	Revenues Revenues	472618000	USD
CY2019	us-gaap	Revenues Revenues	455713000	USD
CY2019	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	716000	USD
CY2021	us-gaap	Revenue From Related Parties RevenueFromRelatedParties	0	USD
CY2021Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	68274000	USD
CY2020Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	54108000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	357000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	291000	USD
CY2021Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	67917000	USD
CY2020Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	53817000	USD
CY2021Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	50459000	USD
CY2020Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	31553000	USD
CY2021Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	6680000	USD
CY2020Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	3813000	USD
CY2021Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	21910000	USD
CY2020Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	33597000	USD
CY2021Q4	us-gaap	Inventory Net InventoryNet	79049000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	68963000	USD
CY2021Q4	us-gaap	Prepaid Insurance PrepaidInsurance	5169000	USD
CY2020Q4	us-gaap	Prepaid Insurance PrepaidInsurance	4096000	USD
CY2021Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	4887000	USD
CY2020Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	1474000	USD
CY2021Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	10056000	USD
CY2020Q4	iiin	Accrued Sales Allowance Reserves Current AccruedSalesAllowanceReservesCurrent	0	USD
CY2021Q4	us-gaap	Sales And Excise Tax Payable Current SalesAndExciseTaxPayableCurrent	760000	USD
CY2020Q4	us-gaap	Sales And Excise Tax Payable Current SalesAndExciseTaxPayableCurrent	544000	USD
CY2021Q4	iiin	Acquisition Holdback Payable Current AcquisitionHoldbackPayableCurrent	0	USD
CY2020Q4	iiin	Acquisition Holdback Payable Current AcquisitionHoldbackPayableCurrent	1000000	USD
CY2021Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	453000	USD
CY2020Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	1726000	USD
CY2021Q4	iiin	Accrued Sales Allowance Reserves Current AccruedSalesAllowanceReservesCurrent	991000	USD
CY2020Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	5570000	USD
CY2021Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	12501000	USD
CY2020Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	10584000	USD
CY2021Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	6306000	USD
CY2020Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	7778000	USD
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	1717000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	2522000	USD
CY2021Q4	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	106000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	170000	USD
CY2021Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	137000	USD
CY2020Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	106000	USD
CY2021Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	20767000	USD
CY2020Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	21160000	USD
CY2021Q4	us-gaap	Land And Land Improvements LandAndLandImprovements	14554000	USD
CY2020Q4	us-gaap	Land And Land Improvements LandAndLandImprovements	14520000	USD
CY2021Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	53182000	USD
CY2020Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	52462000	USD
CY2021Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	180654000	USD
CY2020Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	172617000	USD
CY2021Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	10191000	USD
CY2020Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	3978000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	258581000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	243577000	USD
CY2021Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	152957000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	142185000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	105624000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	101392000	USD
CY2021Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	8229000	USD
CY2020Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	4971000	USD
CY2021Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	4014000	USD
CY2020Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	1201000	USD
CY2021Q4	us-gaap	Customer Refund Liability Current CustomerRefundLiabilityCurrent	2354000	USD
CY2020Q4	us-gaap	Customer Refund Liability Current CustomerRefundLiabilityCurrent	1581000	USD
CY2021Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	1575000	USD
CY2020Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	2464000	USD
CY2021Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	19406000	USD
CY2020Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	14717000	USD
CY2021Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	12832000	USD
CY2020Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	11553000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	6296000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	6568000	USD
CY2021Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	19823000	USD
CY2020Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	19421000	USD
CY2019Q3	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	254000	USD
CY2018Q3	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	295000	USD
CY2021	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	80000	USD
CY2008Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	25000000.0	USD
CY2021Q4	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	24800000	USD
CY2021	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	0
CY2020Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	291000	USD
CY2020	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	65000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	-41000	USD
CY2021	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	14000	USD
CY2020	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	28000	USD
CY2019	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	-0	USD
CY2021Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	357000	USD
CY2020Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	291000	USD
CY2019Q3	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	254000	USD

Files In Submission

Name	View Source	Status
0001437749-21-024481-index-headers.html	Edgar Link	pending
0001437749-21-024481-index.html	Edgar Link	pending
0001437749-21-024481.txt	Edgar Link	pending
0001437749-21-024481-xbrl.zip	Edgar Link	pending
a01.jpg	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
iiin-20211002.xsd	Edgar Link	pending
iiin-20211002_cal.xml	Edgar Link	unprocessable
iiin-20211002_def.xml	Edgar Link	unprocessable
iiin-20211002_lab.xml	Edgar Link	unprocessable
iiin-20211002_pre.xml	Edgar Link	unprocessable
iiin20211002_10k.htm	Edgar Link	pending
iiin20211002_10k_htm.xml	Edgar Link	completed
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$IIIN
INSTEEL INDUSTRIES INC Stock $iiin

2021 Q4 Form 10-K Financial Statement

#000143774921024481 Filed on October 28, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$IIIN INSTEEL INDUSTRIES INC Stock $iiin

2021 Q4 Form 10-K Financial Statement

#000143774921024481 Filed on October 28, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$IIIN
INSTEEL INDUSTRIES INC Stock $iiin