$GFF
GRIFFON CORP Stock $gff

$gff Overview Financials Valuation SEC Filings Company Website

2020 Q1 Form 10-Q Financial Statement

#000005072520000043 Filed on April 29, 2020

Income Statement

Concept	2020 Q1	2019 Q1
Revenue	$566.4M	$549.6M
YoY Change	3.04%	14.85%
Cost Of Revenue	$414.3M	$412.1M
YoY Change	0.53%	15.38%
Gross Profit	$152.0M	$133.5M
YoY Change	13.85%	10.02%
Gross Profit Margin	26.84%	24.3%
Selling, General & Admin	$126.5M	$111.8M
YoY Change	13.14%	6.98%
% of Gross Profit	83.18%	83.71%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$15.72M	$15.49M
YoY Change	1.47%	16.37%
% of Gross Profit	10.34%	11.6%
Operating Expenses	$126.5M	$111.8M
YoY Change	13.14%	6.98%
Operating Profit	$25.57M	$25.72M
YoY Change	-0.61%	52.32%
Interest Expense	$16.87M	$17.52M
YoY Change	-3.69%	4.23%
% of Operating Profit	65.99%	68.1%
Other Income/Expense, Net	-$22.64M	-$16.04M
YoY Change	41.15%	17.08%
Pretax Income	$2.929M	$9.684M
YoY Change	-69.75%	203.76%
Income Tax	$2.034M	$3.194M
% Of Pretax Income	69.44%	32.98%
Net Earnings	$895.0K	-$1.156M
YoY Change	-177.42%	-101.28%
Net Earnings / Revenue	0.16%	-0.21%
Basic Earnings Per Share	$0.02	-$0.03
Diluted Earnings Per Share	$0.02	-$0.03
COMMON SHARES
Basic Shares Outstanding	41.57M shares	40.95M shares
Diluted Shares Outstanding	43.73M shares	42.83M shares

Balance Sheet

Concept	2020 Q1	2019 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$69.00M	$58.00M
YoY Change	18.97%	-75.48%
Cash & Equivalents	$69.02M	$57.98M
Short-Term Investments
Other Short-Term Assets	$43.00M	$46.10M
YoY Change	-6.72%	-2.95%
Inventory	$462.1M	$457.1M
Prepaid Expenses
Receivables	$335.0M	$344.0M
Other Receivables	$0.00	$0.00
Total Short-Term Assets	$1.004B	$989.1M
YoY Change	1.48%	-6.91%
LONG-TERM ASSETS
Property, Plant & Equipment	$335.8M	$332.9M
YoY Change	0.89%	14.18%
Goodwill	$436.8M	$439.1M
YoY Change	-0.53%	3.94%
Intangibles	$575.0M	$586.1M
YoY Change	-1.9%	33.12%
Long-Term Investments	$0.00	$0.00
YoY Change
Other Assets	$29.56M	$15.19M
YoY Change	94.55%	-3.05%
Total Long-Term Assets	$1.315B	$1.155B
YoY Change	13.88%	13.35%
TOTAL ASSETS
Total Short-Term Assets	$1.004B	$989.1M
Total Long-Term Assets	$1.315B	$1.155B
Total Assets	$2.319B	$2.144B
YoY Change	8.16%	3.01%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$228.7M	$223.2M
YoY Change	2.46%	-12.82%
Accrued Expenses	$118.5M	$120.5M
YoY Change	-1.7%	6.22%
Deferred Revenue	$21.29M	$28.23M
YoY Change	-24.57%
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due	$9.470M	$10.81M
YoY Change	-12.37%	-16.34%
Total Short-Term Liabilities	$387.1M	$366.2M
YoY Change	5.72%	-15.5%
LONG-TERM LIABILITIES
Long-Term Debt	$1.216B	$1.206B
YoY Change	0.83%	11.84%
Other Long-Term Liabilities	$102.3M	$94.94M
YoY Change	7.75%	4.95%
Total Long-Term Liabilities	$1.319B	$1.301B
YoY Change	1.34%	11.31%
TOTAL LIABILITIES
Total Short-Term Liabilities	$387.1M	$366.2M
Total Long-Term Liabilities	$1.319B	$1.301B
Total Liabilities	$1.842B	$1.670B
YoY Change	10.34%	3.88%
SHAREHOLDERS EQUITY
Retained Earnings		$545.6M
YoY Change
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$476.5M	$474.3M
YoY Change
Total Liabilities & Shareholders Equity	$2.319B	$2.144B
YoY Change	8.16%	3.01%

Cashflow Statement

Concept	2020 Q1	2019 Q1
OPERATING ACTIVITIES
Net Income	$895.0K	-$1.156M
YoY Change	-177.42%	-101.28%
Depreciation, Depletion And Amortization	$15.72M	$15.49M
YoY Change	1.47%	16.37%
Cash From Operating Activities	-$44.00M	-$59.00M
YoY Change	-25.42%	2.08%
INVESTING ACTIVITIES
Capital Expenditures	$9.347M	$9.021M
YoY Change	3.61%	-16.8%
Acquisitions
YoY Change
Other Investing Activities	$100.0K	-$10.70M
YoY Change	-100.93%	-102.48%
Cash From Investing Activities	-$9.300M	-$19.70M
YoY Change	-52.79%	-104.68%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	59.70M	55.50M
YoY Change	7.57%	-126.49%
NET CHANGE
Cash From Operating Activities	-44.00M	-59.00M
Cash From Investing Activities	-9.300M	-19.70M
Cash From Financing Activities	59.70M	55.50M
Net Change In Cash	6.400M	-23.20M
YoY Change	-127.59%	-115.07%
FREE CASH FLOW
Cash From Operating Activities	-$44.00M	-$59.00M
Capital Expenditures	$9.347M	$9.021M
Free Cash Flow	-$53.35M	-$68.02M
YoY Change	-21.57%	-0.91%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--09-30
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q2
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
	dei	Entity Central Index Key EntityCentralIndexKey	0000050725
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	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P10Y
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	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2020-03-31
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	1-06620
	dei	Entity Registrant Name EntityRegistrantName	GRIFFON CORPORATION
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	11-1893410
	dei	Local Phone Number LocalPhoneNumber	957-5000
	dei	Security12b Title Security12bTitle	Common Stock, $0.25 par value
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Trading Symbol TradingSymbol	GFF
	dei	Security Exchange Name SecurityExchangeName	NYSE
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Address Address Line1 EntityAddressAddressLine1	712 Fifth Ave, 18th Floor
	dei	Entity Address City Or Town EntityAddressCityOrTown	New York
	dei	Entity Address State Or Province EntityAddressStateOrProvince	NY
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	10019
	dei	City Area Code CityAreaCode	212
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
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	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	11507000	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	15243000	USD
CY2020Q1	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	0	USD
CY2019Q1	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-11000000	USD
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	0	USD
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-11000000	USD
CY2020Q1	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	0	USD
CY2019Q1	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-3354000	USD
	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	0	USD
	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-3354000	USD
CY2020Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2019Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-7646000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-7646000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	895000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	-1156000	USD
	us-gaap	Net Income Loss NetIncomeLoss	11507000	USD
	us-gaap	Net Income Loss NetIncomeLoss	7597000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.02
CY2019Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.16
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.28
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.37
CY2020Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2019Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.19
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.19
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.02
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.03
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.19
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	41565000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	40949000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	41369000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	40849000	shares
CY2020Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.02
CY2019Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.15
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.26
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.36
CY2020Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2019Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.18
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.18
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.02
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.03
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.26
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.18
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	43734000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	42832000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	43826000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	42376000	shares
CY2020Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.0750
CY2019Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.0725
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.1500
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.1450
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	895000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	-1156000	USD
	us-gaap	Net Income Loss NetIncomeLoss	11507000	USD
	us-gaap	Net Income Loss NetIncomeLoss	7597000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-16471000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	2885000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-10001000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-2851000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-669000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-184000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1341000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-368000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	968000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-189000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	667000	USD
	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-87000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-14834000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2880000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-7993000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2570000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-13939000	USD
CY2019Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1724000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	3514000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	5027000	USD
	us-gaap	Net Income Loss NetIncomeLoss	11507000	USD
	us-gaap	Net Income Loss NetIncomeLoss	7597000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-7646000	USD
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	31544000	USD
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	30577000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	8302000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	7500000	USD
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	4388000	USD
	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	596000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	316000	USD
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2267000	USD
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2841000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-6690000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	408000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-865000	USD
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	274000	USD
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	137000	USD
	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	18739000	USD
	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	0	USD
	gff	Increase Decrease In Receivables And Contract Assets IncreaseDecreaseInReceivablesAndContractAssets	61815000	USD
	gff	Increase Decrease In Receivables And Contract Assets IncreaseDecreaseInReceivablesAndContractAssets	47669000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	20958000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	37852000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	6005000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-2323000	USD
	gff	Increase Decrease In Accounts Payable Accrued Liabilities Income Taxes Payable And Net Change To Leases IncreaseDecreaseInAccountsPayableAccruedLiabilitiesIncomeTaxesPayableAndNetChangeToLeases	-56792000	USD
	gff	Increase Decrease In Accounts Payable Accrued Liabilities Income Taxes Payable And Net Change To Leases IncreaseDecreaseInAccountsPayableAccruedLiabilitiesIncomeTaxesPayableAndNetChangeToLeases	-28945000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-560000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-1662000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-60843000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-55006000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	22519000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	17418000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	10531000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	9219000	USD
	gff	Proceeds From Payments For Insurance Settlement Investing Activities ProceedsFromPaymentsForInsuranceSettlementInvestingActivities	0	USD
	gff	Proceeds From Payments For Insurance Settlement Investing Activities ProceedsFromPaymentsForInsuranceSettlementInvestingActivities	-10604000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	290000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	62000	USD
	us-gaap	Payments For Proceeds From Investments PaymentsForProceedsFromInvestments	0	USD
	us-gaap	Payments For Proceeds From Investments PaymentsForProceedsFromInvestments	149000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-32760000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-37328000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	7349000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	6847000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	7479000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1478000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1061343000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	143101000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	939071000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	48169000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	13176000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	945000	USD
	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	0	USD
CY2020Q1	us-gaap	Revenue Remaining Performance Obligation Percentage RevenueRemainingPerformanceObligationPercentage	0.73
	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	1686000	USD
CY2020Q1	gff	Contract With Customer Asset And Capitalized Contract Cost Net Current ContractWithCustomerAssetAndCapitalizedContractCostNetCurrent	94495000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	83000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	83000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	94351000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	84059000	USD
	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-1994000	USD
	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	-3438000	USD
	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	0	USD
	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	0	USD
	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	0	USD
	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	0	USD
	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	-1994000	USD
	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	-3438000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-2107000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-66000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-3353000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-11779000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	72377000	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	69758000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	69024000	USD
CY2019Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	57979000	USD
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
	gff	Revenue Performance Obligation Satisfied At A Point In Time Percentage RevenuePerformanceObligationSatisfiedAtAPointInTimePercentage	0.80
	gff	Revenue Performance Obligation Satisfied Over In Time Percentage RevenuePerformanceObligationSatisfiedOverInTimePercentage	0.20
CY2020Q1	gff	Contractwith Customer Asset Cumulative Catchup Adjustmentto Revenue ContractwithCustomerAssetCumulativeCatchupAdjustmenttoRevenue	-2224000	USD
	gff	Contractwith Customer Asset Cumulative Catchup Adjustmentto Revenue ContractwithCustomerAssetCumulativeCatchupAdjustmenttoRevenue	-5243000	USD
CY2020Q1	us-gaap	Capitalized Contract Cost Accumulated Impairment CapitalizedContractCostAccumulatedImpairment	8560000	USD
CY2019Q3	us-gaap	Capitalized Contract Cost Accumulated Impairment CapitalizedContractCostAccumulatedImpairment	9790000	USD
CY2020Q1	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	331740000	USD
	gff	Increase Decrease Contract With Customer Asset And Capitalized Contract Cost Net Current IncreaseDecreaseContractWithCustomerAssetAndCapitalizedContractCostNetCurrent	-10616000	USD
CY2020Q1	gff	Contract With Customer Asset And Capitalized Contract Cost Net Noncurrent ContractWithCustomerAssetAndCapitalizedContractCostNetNoncurrent	12612000	USD
CY2019Q3	gff	Contract With Customer Asset And Capitalized Contract Cost Net Noncurrent ContractWithCustomerAssetAndCapitalizedContractCostNetNoncurrent	13100000	USD
CY2020Q1	us-gaap	Contract With Customer Asset Accumulated Allowance For Credit Loss ContractWithCustomerAssetAccumulatedAllowanceForCreditLoss	1570000	USD
CY2020Q1	us-gaap	Contract With Customer Liability Current ContractWithCustomerLiabilityCurrent	21292000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-4967000	USD
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	2960000	USD
	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	0	USD
CY2020Q1	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	122576000	USD
CY2019Q3	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	121791000	USD
CY2020Q1	us-gaap	Inventory Work In Process InventoryWorkInProcess	99730000	USD
CY2019Q3	us-gaap	Inventory Work In Process InventoryWorkInProcess	93830000	USD
CY2020Q1	us-gaap	Inventory Finished Goods InventoryFinishedGoods	239813000	USD
CY2019Q3	us-gaap	Inventory Finished Goods InventoryFinishedGoods	226500000	USD
CY2020Q1	us-gaap	Inventory Net InventoryNet	462119000	USD
CY2019Q3	us-gaap	Inventory Net InventoryNet	442121000	USD
CY2020Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	784978000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	763542000	USD
CY2020Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	449158000	USD
CY2019Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	426216000	USD
CY2020Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	335820000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	337326000	USD
CY2020Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	13316000	USD
CY2019Q1	us-gaap	Depreciation And Amortization DepreciationAndAmortization	12980000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	26748000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	25647000	USD
CY2019Q3	us-gaap	Goodwill Goodwill	437067000	USD
	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	3125000	USD
	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-3410000	USD
CY2020Q1	us-gaap	Goodwill Goodwill	436782000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	9684000	USD
CY2020Q1	us-gaap	Income Tax Reconciliation Nondeductible Expense Restructuring Charges IncomeTaxReconciliationNondeductibleExpenseRestructuringCharges	3104000	USD
CY2020Q1	gff	Effective Income Tax Rate Reconciliation Nondeductible Expense Restructuring Charges Amount Net Of Tax EffectiveIncomeTaxRateReconciliationNondeductibleExpenseRestructuringChargesAmountNetOfTax	3005000	USD
CY2020Q1	gff	Effective Income Tax Rate Reconciliation Nondeductible Expense Acquisitionrelated Costs Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAcquisitionrelatedCostsAmount	2960000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	201111000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	68650000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	202682000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	65112000	USD
CY2020Q1	us-gaap	Indefinite Lived Trademarks IndefiniteLivedTrademarks	221282000	USD
CY2019Q3	us-gaap	Indefinite Lived Trademarks IndefiniteLivedTrademarks	219069000	USD
CY2020Q1	gff	Finite Lived And Infinite Lived Intangible Asset Gross FiniteLivedAndInfiniteLivedIntangibleAssetGross	422393000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	68650000	USD
CY2019Q3	gff	Finite Lived And Infinite Lived Intangible Asset Gross FiniteLivedAndInfiniteLivedIntangibleAssetGross	421751000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	65112000	USD
CY2020Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2403000	USD
CY2019Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2512000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4796000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4930000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	4797000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	9387000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	9387000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	9234000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	9208000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	9208000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	81240000	USD
CY2019Q3	us-gaap	Number Of Reporting Units NumberOfReportingUnits	3	reporting_unit
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2034000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2929000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3194000	USD
CY2019Q1	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-97000	USD
CY2020Q1	gff	Effective Income Tax Rate Reconciliation Nondeductible Expense Acquisitionrelated Costs Amount Net Of Tax EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAcquisitionrelatedCostsAmountNetOfTax	2321000	USD
CY2020Q1	gff	Effective Income Tax Rate Reconciliation Nondeductible Expense Debt Extinguishment Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDebtExtinguishmentAmount	6690000	USD
CY2020Q1	gff	Effective Income Tax Rate Reconciliation Nondeductible Expense Debt Extinguishment Amount Net Of Tax EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDebtExtinguishmentAmountNetOfTax	5245000	USD
CY2020Q1	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-1413000	USD
CY2020Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.359
CY2019Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.340
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8373000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	19880000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8406000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	23649000	USD
	us-gaap	Income Tax Reconciliation Nondeductible Expense Restructuring Charges IncomeTaxReconciliationNondeductibleExpenseRestructuringCharges	9538000	USD
	gff	Effective Income Tax Rate Reconciliation Nondeductible Expense Restructuring Charges Amount Net Of Tax EffectiveIncomeTaxRateReconciliationNondeductibleExpenseRestructuringChargesAmountNetOfTax	7153000	USD
	gff	Effective Income Tax Rate Reconciliation Nondeductible Expense Acquisitionrelated Costs Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAcquisitionrelatedCostsAmount	2960000	USD
	gff	Effective Income Tax Rate Reconciliation Nondeductible Expense Acquisitionrelated Costs Amount Net Of Tax EffectiveIncomeTaxRateReconciliationNondeductibleExpenseAcquisitionrelatedCostsAmountNetOfTax	2321000	USD
	gff	Effective Income Tax Rate Reconciliation Nondeductible Expense Debt Extinguishment Amount EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDebtExtinguishmentAmount	6690000	USD
	gff	Effective Income Tax Rate Reconciliation Nondeductible Expense Debt Extinguishment Amount Net Of Tax EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDebtExtinguishmentAmountNetOfTax	5245000	USD
	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-580000	USD
	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	370000	USD
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.344
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.340
CY2020Q1	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	1242500000	USD
CY2020Q1	us-gaap	Debt Instrument Unamortized Premium DebtInstrumentUnamortizedPremium	104000	USD
CY2020Q1	gff	Long Term Debt Capitalized Fees And Expenses LongTermDebtCapitalizedFeesAndExpenses	16908000	USD
CY2020Q1	us-gaap	Long Term Debt LongTermDebt	1225696000	USD
CY2019Q3	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	1114131000	USD
CY2019Q3	us-gaap	Debt Instrument Unamortized Premium DebtInstrumentUnamortizedPremium	867000	USD
CY2019Q3	gff	Long Term Debt Capitalized Fees And Expenses LongTermDebtCapitalizedFeesAndExpenses	10724000	USD
CY2019Q3	us-gaap	Long Term Debt LongTermDebt	1104274000	USD
CY2020Q1	gff	Long Term Debt Gross Current LongTermDebtGrossCurrent	9470000	USD
CY2020Q1	us-gaap	Debt Instrument Unamortized Premium Current DebtInstrumentUnamortizedPremiumCurrent	0	USD
CY2020Q1	us-gaap	Long Term Debt Current LongTermDebtCurrent	9470000	USD
CY2019Q3	gff	Long Term Debt Gross Current LongTermDebtGrossCurrent	10525000	USD
CY2019Q3	us-gaap	Debt Instrument Unamortized Premium Current DebtInstrumentUnamortizedPremiumCurrent	0	USD
CY2019Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	10525000	USD
CY2020Q1	gff	Long Term Debt Gross Noncurrent LongTermDebtGrossNoncurrent	1233030000	USD
CY2020Q1	us-gaap	Debt Instrument Unamortized Premium Noncurrent DebtInstrumentUnamortizedPremiumNoncurrent	104000	USD
CY2020Q1	gff	Long Term Debt Capitalized Fees And Expenses LongTermDebtCapitalizedFeesAndExpenses	16908000	USD
CY2020Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1216226000	USD
CY2019Q3	gff	Long Term Debt Gross Noncurrent LongTermDebtGrossNoncurrent	1103606000	USD
CY2019Q3	us-gaap	Debt Instrument Unamortized Premium Noncurrent DebtInstrumentUnamortizedPremiumNoncurrent	867000	USD
CY2019Q3	gff	Long Term Debt Capitalized Fees And Expenses LongTermDebtCapitalizedFeesAndExpenses	10724000	USD
CY2019Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1093749000	USD
CY2020Q1	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	28000	USD
CY2020Q1	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	28000	USD
CY2019Q1	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	0	USD
CY2019Q1	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	0	USD
CY2020Q1	us-gaap	Interest Paid Net InterestPaidNet	15876000	USD
CY2020Q1	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	45000	USD
CY2020Q1	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	950000	USD
CY2020Q1	us-gaap	Interest Expense Debt InterestExpenseDebt	16871000	USD
CY2019Q1	us-gaap	Interest Paid Net InterestPaidNet	15906000	USD
CY2019Q1	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	66000	USD
CY2019Q1	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1545000	USD
CY2019Q1	us-gaap	Interest Expense Debt InterestExpenseDebt	17517000	USD
	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	93000	USD
	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	93000	USD
	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	0	USD
	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	0	USD
	us-gaap	Interest Paid Net InterestPaidNet	30815000	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	112000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2155000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	33082000	USD
	us-gaap	Interest Paid Net InterestPaidNet	31204000	USD
	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	134000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	2708000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	34046000	USD
CY2012Q4	us-gaap	Debt Instrument Basis Spread On Variable Rate1 DebtInstrumentBasisSpreadOnVariableRate1	0.013
CY2020Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	1057505	shares
CY2020Q1	us-gaap	Restricted Stock Expense RestrictedStockExpense	3662000	USD
CY2019Q1	us-gaap	Restricted Stock Expense RestrictedStockExpense	3422000	USD
	us-gaap	Restricted Stock Expense RestrictedStockExpense	6812000	USD
	us-gaap	Restricted Stock Expense RestrictedStockExpense	6355000	USD
CY2020Q1	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	658000	USD
CY2019Q1	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	492000	USD
	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	1490000	USD
	us-gaap	Employee Stock Ownership Plan Esop Compensation Expense EmployeeStockOwnershipPlanESOPCompensationExpense	1145000	USD
CY2020Q1	us-gaap	Share Based Compensation ShareBasedCompensation	4320000	USD
CY2019Q1	us-gaap	Share Based Compensation ShareBasedCompensation	3914000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	8302000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	7500000	USD
CY2018Q3	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	50000000	USD
CY2020Q1	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	57955000	USD
CY2020Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	47431000	shares
CY2019Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	46800000	shares
CY2020Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	47431000	shares
CY2019Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	46800000	shares
CY2020Q1	us-gaap	Employee Stock Ownership Plan Esop Number Of Committed To Be Released Shares EmployeeStockOwnershipPlanESOPNumberOfCommittedToBeReleasedShares	2159000	shares
CY2019Q1	us-gaap	Employee Stock Ownership Plan Esop Number Of Committed To Be Released Shares EmployeeStockOwnershipPlanESOPNumberOfCommittedToBeReleasedShares	2409000	shares
CY2020Q1	us-gaap	Employee Stock Ownership Plan Esop Number Of Committed To Be Released Shares EmployeeStockOwnershipPlanESOPNumberOfCommittedToBeReleasedShares	2159000	shares
CY2019Q1	us-gaap	Employee Stock Ownership Plan Esop Number Of Committed To Be Released Shares EmployeeStockOwnershipPlanESOPNumberOfCommittedToBeReleasedShares	2409000	shares
CY2020Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	3562000	shares
CY2019Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	3427000	shares
CY2020Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	3562000	shares
CY2019Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	3427000	shares
CY2020Q1	gff	Weighted Average Number Basic Shares Outstanding Adjustment WeightedAverageNumberBasicSharesOutstandingAdjustment	145000	shares
CY2019Q1	gff	Weighted Average Number Basic Shares Outstanding Adjustment WeightedAverageNumberBasicSharesOutstandingAdjustment	15000	shares
	gff	Weighted Average Number Basic Shares Outstanding Adjustment WeightedAverageNumberBasicSharesOutstandingAdjustment	341000	shares
	gff	Weighted Average Number Basic Shares Outstanding Adjustment WeightedAverageNumberBasicSharesOutstandingAdjustment	115000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	41565000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	40949000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	41369000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	40849000	shares
CY2020Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2169000	shares
CY2019Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1883000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2457000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1527000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	43734000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	42832000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	43826000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	42376000	shares
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2020Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	566350000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	549633000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1114788000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1060155000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	566350000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	549633000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1114788000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1060155000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	566350000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1114788000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	549633000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1060155000	USD
CY2020Q1	gff	Earnings Before Income Tax Depreciation And Amortization EarningsBeforeIncomeTaxDepreciationAndAmortization	-47963000	USD
CY2019Q1	gff	Earnings Before Income Tax Depreciation And Amortization EarningsBeforeIncomeTaxDepreciationAndAmortization	-42481000	USD
	gff	Earnings Before Income Tax Depreciation And Amortization EarningsBeforeIncomeTaxDepreciationAndAmortization	-103123000	USD
	gff	Earnings Before Income Tax Depreciation And Amortization EarningsBeforeIncomeTaxDepreciationAndAmortization	-87862000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2929000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	9684000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	19880000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	23649000	USD
CY2020Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	15719000	USD
CY2019Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	15492000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	31544000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	30577000	USD
CY2020Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	9347000	USD
CY2019Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	9021000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	22519000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	17418000	USD
CY2020Q1	gff	Assets Of Continuing Operations AssetsOfContinuingOperations	2315553000	USD
CY2019Q3	gff	Assets Of Continuing Operations AssetsOfContinuingOperations	2071730000	USD
CY2020Q1	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	3194000	USD
CY2019Q3	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	3209000	USD
CY2020Q1	us-gaap	Assets Assets	2318747000	USD
CY2019Q1	gff	Discontinued Operation Claims Dispute Settlement DiscontinuedOperationClaimsDisputeSettlement	11000000	USD
CY2019Q1	gff	Discontinued Operation Claims Dispute Settlement Net Of Tax DiscontinuedOperationClaimsDisputeSettlementNetOfTax	7646000	USD
CY2019Q3	us-gaap	Assets Assets	2074939000	USD
CY2020Q1	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1151000	USD
CY2019Q1	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1571000	USD
	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	2302000	USD
	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	3141000	USD
CY2020Q1	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	2586000	USD
CY2019Q1	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	2583000	USD
	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	5172000	USD
	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	5166000	USD
CY2020Q1	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	4000	USD
CY2019Q1	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	3000	USD
	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	8000	USD
	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	7000	USD
CY2020Q1	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-1042000	USD
CY2019Q1	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-222000	USD
	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-2084000	USD
	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-444000	USD
CY2020Q1	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-389000	USD
CY2019Q1	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-787000	USD
	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-778000	USD
	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-1574000	USD
CY2020Q1	us-gaap	Restructuring Charges RestructuringCharges	3104000	USD
CY2019Q2	gff	Discontinued Operation Payment Of Claims Dispute Settlement DiscontinuedOperationPaymentOfClaimsDisputeSettlement	9500000	USD
CY2020Q1	us-gaap	Disposal Group Including Discontinued Operation Prepaid And Other Assets Current DisposalGroupIncludingDiscontinuedOperationPrepaidAndOtherAssetsCurrent	321000	USD
CY2019Q3	us-gaap	Disposal Group Including Discontinued Operation Prepaid And Other Assets Current DisposalGroupIncludingDiscontinuedOperationPrepaidAndOtherAssetsCurrent	321000	USD
CY2020Q1	us-gaap	Disposal Group Including Discontinued Operation Other Noncurrent Assets DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets	2873000	USD
CY2019Q3	us-gaap	Disposal Group Including Discontinued Operation Other Noncurrent Assets DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentAssets	2888000	USD
CY2020Q1	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	3194000	USD
CY2019Q3	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	3209000	USD
CY2020Q1	us-gaap	Disposal Group Including Discontinued Operation Accrued Liabilities Current DisposalGroupIncludingDiscontinuedOperationAccruedLiabilitiesCurrent	2450000	USD
CY2019Q3	us-gaap	Disposal Group Including Discontinued Operation Accrued Liabilities Current DisposalGroupIncludingDiscontinuedOperationAccruedLiabilitiesCurrent	4333000	USD
CY2020Q1	us-gaap	Disposal Group Including Discontinued Operation Other Noncurrent Liabilities DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities	3154000	USD
CY2019Q3	us-gaap	Disposal Group Including Discontinued Operation Other Noncurrent Liabilities DisposalGroupIncludingDiscontinuedOperationOtherNoncurrentLiabilities	3331000	USD
CY2020Q1	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	5604000	USD
CY2019Q3	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	7664000	USD
CY2020Q1	us-gaap	Restructuring Charges RestructuringCharges	3104000	USD
	us-gaap	Restructuring Charges RestructuringCharges	9538000	USD
	us-gaap	Restructuring Costs RestructuringCosts	4846000	USD
	us-gaap	Restructuring Reserve Settled Without Cash2 RestructuringReserveSettledWithoutCash2	4692000	USD
	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	1968000	USD
	us-gaap	Impairment Of Leasehold ImpairmentOfLeasehold	671000	USD
	us-gaap	Inventory Write Down InventoryWriteDown	304000	USD
	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	1749000	USD
	us-gaap	Restructuring And Related Cost Number Of Positions Eliminated RestructuringAndRelatedCostNumberOfPositionsEliminated	148	position
CY2019Q3	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	7894000	USD
	us-gaap	Restructuring Charges RestructuringCharges	9538000	USD
	us-gaap	Restructuring Charges RestructuringCharges	9538000	USD
CY2020Q1	us-gaap	Restructuring Charges RestructuringCharges	3104000	USD
CY2019Q3	us-gaap	Restructuring Reserve RestructuringReserve	0	USD
CY2019Q4	us-gaap	Restructuring And Related Cost Incurred Cost RestructuringAndRelatedCostIncurredCost	6434000	USD
CY2019Q4	us-gaap	Payments For Restructuring PaymentsForRestructuring	761000	USD
CY2019Q4	us-gaap	Restructuring Reserve Settled Without Cash2 RestructuringReserveSettledWithoutCash2	4160000	USD
CY2019Q4	us-gaap	Restructuring Reserve RestructuringReserve	1513000	USD
CY2020Q1	us-gaap	Restructuring And Related Cost Incurred Cost RestructuringAndRelatedCostIncurredCost	3104000	USD
CY2020Q1	us-gaap	Payments For Restructuring PaymentsForRestructuring	1955000	USD
CY2020Q1	us-gaap	Restructuring Reserve Settled Without Cash2 RestructuringReserveSettledWithoutCash2	532000	USD
CY2020Q1	us-gaap	Restructuring Reserve RestructuringReserve	2130000	USD
CY2020Q1	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	745000	USD
CY2019Q1	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-118000	USD
CY2020Q1	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-389000	USD
CY2019Q1	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-787000	USD
CY2020Q1	us-gaap	Investment Income Net InvestmentIncomeNet	-230000	USD
CY2019Q1	us-gaap	Investment Income Net InvestmentIncomeNet	108000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	369000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	384000	USD
	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-778000	USD
	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-1574000	USD
	us-gaap	Investment Income Net InvestmentIncomeNet	-149000	USD
	us-gaap	Investment Income Net InvestmentIncomeNet	31000	USD
	gff	Contract Award Income ContractAwardIncome	700000	USD
CY2019Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	7344000	USD
CY2018Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	9041000	USD
CY2018Q3	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	8174000	USD
CY2020Q1	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	4862000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-2486000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	84000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2570000	USD
CY2019Q1	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	4700000	USD
	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	8227000	USD
	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	8761000	USD
CY2020Q1	us-gaap	Product Warranty Accrual Period Increase Decrease ProductWarrantyAccrualPeriodIncreaseDecrease	4417000	USD
CY2019Q1	us-gaap	Product Warranty Accrual Period Increase Decrease ProductWarrantyAccrualPeriodIncreaseDecrease	5730000	USD
	us-gaap	Product Warranty Accrual Period Increase Decrease ProductWarrantyAccrualPeriodIncreaseDecrease	8332000	USD
	us-gaap	Product Warranty Accrual Period Increase Decrease ProductWarrantyAccrualPeriodIncreaseDecrease	8924000	USD
CY2020Q1	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	7789000	USD
CY2019Q1	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	8011000	USD
CY2020Q1	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	7789000	USD
CY2019Q1	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	8011000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-14241000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	593000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-14834000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	2822000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-58000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2880000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-7354000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	639000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-7993000	USD
	us-gaap	Operating Lease Impairment Loss OperatingLeaseImpairmentLoss	1968000	USD
	us-gaap	Impairment Of Leasehold ImpairmentOfLeasehold	671000	USD
CY2020Q1	us-gaap	Operating Lease Cost OperatingLeaseCost	9187000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	18739000	USD
CY2020Q1	us-gaap	Variable Lease Cost VariableLeaseCost	1823000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	3576000	USD
CY2020Q1	us-gaap	Short Term Lease Cost ShortTermLeaseCost	1393000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	2823000	USD
CY2020Q1	us-gaap	Lease Cost LeaseCost	12403000	USD
	us-gaap	Lease Cost LeaseCost	25138000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	21582000	USD
	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1940000	USD
	gff	Cash Paid For Lease Liability CashPaidForLeaseLiability	23522000	USD
CY2020Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	156258000	USD
CY2020Q1	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	28047000	USD
CY2020Q1	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	133498000	USD
CY2020Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	161545000	USD
CY2020Q1	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	14059000	USD
CY2020Q1	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	4014000	USD
CY2020Q1	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	10074000	USD
CY2020Q1	us-gaap	Finance Lease Liability FinanceLeaseLiability	14088000	USD
CY2020Q1	gff	Property Subject To Or Available For Financial Lease Accumulated Depreciation PropertySubjectToOrAvailableForFinancialLeaseAccumulatedDepreciation	1946000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	17505000	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Remainder Of Fiscal Year FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear	2452000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	33312000	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	4164000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	28570000	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	2607000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	22261000	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	2315000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	16467000	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	2074000	USD
CY2020Q1	gff	Lessee Operating Lease Liability Payments Due Year Six LesseeOperatingLeaseLiabilityPaymentsDueYearSix	14334000	USD
CY2020Q1	gff	Finance Lease Liability Payments Due Year Six FinanceLeaseLiabilityPaymentsDueYearSix	1383000	USD
CY2020Q1	gff	Lessee Operating Lease Liability Payments Due After Year Six LesseeOperatingLeaseLiabilityPaymentsDueAfterYearSix	72614000	USD
CY2020Q1	gff	Finance Lease Liability Payments Due After Year Six FinanceLeaseLiabilityPaymentsDueAfterYearSix	0	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	205063000	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	14995000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	43518000	USD
CY2020Q1	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	907000	USD
CY2020Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	161545000	USD
CY2020Q1	us-gaap	Finance Lease Liability FinanceLeaseLiability	14088000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	35176000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	30730000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	26119000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	20008000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	14198000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	78105000	USD
CY2019Q3	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	204336000	USD
CY2020Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P8Y9M18D
CY2020Q1	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P2Y1M6D
CY2020Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0410
CY2020Q1	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0550
CY2011Q2	gff	Net Capital Cost Value In Proposed Remedia Action Plan NetCapitalCostValueInProposedRemediaActionPlan	10000000	USD
	gff	Maximum Percentage Of Segment Adjusted Ebitda To Business Ebitda MaximumPercentageOfSegmentAdjustedEBITDAToBusinessEBITDA	0.50
CY2020Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	69024000	USD
CY2020Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	335033000	USD
CY2020Q1	gff	Contract With Customer Asset And Capitalized Contract Cost Net Current ContractWithCustomerAssetAndCapitalizedContractCostNetCurrent	94495000	USD
CY2020Q1	us-gaap	Inventory Net InventoryNet	462119000	USD
CY2020Q1	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	42723000	USD
CY2020Q1	us-gaap	Disposal Group Including Discontinued Operation Other Current Assets DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets	321000	USD
CY2020Q1	us-gaap	Assets Current AssetsCurrent	1003715000	USD
CY2020Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	335820000	USD
CY2020Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	156258000	USD
CY2020Q1	us-gaap	Goodwill Goodwill	436782000	USD
CY2020Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	353743000	USD
CY2020Q1	gff	Intercompany Receivables IntercompanyReceivables	0	USD
CY2020Q1	us-gaap	Equity Method Investments EquityMethodInvestments	0	USD
CY2020Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	29556000	USD
CY2020Q1	us-gaap	Disposal Group Including Discontinued Operation Assets Noncurrent DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent	2873000	USD
CY2020Q1	us-gaap	Assets Assets	2318747000	USD
CY2020Q1	us-gaap	Long Term Debt Current LongTermDebtCurrent	9470000	USD
CY2020Q1	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	347153000	USD
CY2020Q1	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	28047000	USD
CY2020Q1	us-gaap	Disposal Group Including Discontinued Operation Accrued Liabilities DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities	2450000	USD
CY2020Q1	us-gaap	Liabilities Current LiabilitiesCurrent	387120000	USD
CY2020Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1216226000	USD
CY2020Q1	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	133498000	USD
CY2020Q1	gff	Intercompany Payables IntercompanyPayables	0	USD
CY2020Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	102295000	USD
CY2020Q1	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Noncurrent LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent	3154000	USD
CY2020Q1	us-gaap	Liabilities Liabilities	1842293000	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	476454000	USD
CY2020Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2318747000	USD
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	72377000	USD
CY2019Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	264450000	USD
CY2019Q3	gff	Contract With Customer Asset And Capitalized Contract Cost Net Current ContractWithCustomerAssetAndCapitalizedContractCostNetCurrent	105111000	USD
CY2019Q3	us-gaap	Inventory Net InventoryNet	442121000	USD
CY2019Q3	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	40799000	USD
CY2019Q3	us-gaap	Disposal Group Including Discontinued Operation Other Current Assets DisposalGroupIncludingDiscontinuedOperationOtherCurrentAssets	321000	USD
CY2019Q3	us-gaap	Assets Current AssetsCurrent	925179000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	337326000	USD
CY2019Q3	us-gaap	Goodwill Goodwill	437067000	USD
CY2019Q3	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	356639000	USD
CY2019Q3	gff	Intercompany Receivables IntercompanyReceivables	0	USD
CY2019Q3	us-gaap	Equity Method Investments EquityMethodInvestments	0	USD
CY2019Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	15840000	USD
CY2019Q3	us-gaap	Disposal Group Including Discontinued Operation Assets Noncurrent DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent	2888000	USD
CY2019Q3	us-gaap	Assets Assets	2074939000	USD
CY2019Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	10525000	USD
CY2019Q3	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	375241000	USD
CY2019Q3	us-gaap	Disposal Group Including Discontinued Operation Accrued Liabilities DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities	4333000	USD
CY2019Q3	us-gaap	Liabilities Current LiabilitiesCurrent	390099000	USD
CY2019Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1093749000	USD
CY2019Q3	gff	Intercompany Payables IntercompanyPayables	0	USD
CY2019Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	109997000	USD
CY2019Q3	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Noncurrent LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent	3331000	USD
CY2019Q3	us-gaap	Liabilities Liabilities	1597176000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	477763000	USD
CY2019Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2074939000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	566350000	USD
CY2020Q1	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	414318000	USD
CY2020Q1	us-gaap	Gross Profit GrossProfit	152032000	USD
CY2020Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	126467000	USD
CY2020Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	25565000	USD
CY2020Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-16561000	USD
CY2020Q1	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-6690000	USD
CY2020Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	615000	USD
CY2020Q1	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-22636000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2929000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2034000	USD
CY2020Q1	gff	Income Loss Before Equity Method Investments After Income Taxes IncomeLossBeforeEquityMethodInvestmentsAfterIncomeTaxes	895000	USD
CY2020Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	895000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-13939000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	549633000	USD
CY2019Q1	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	412129000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	137504000	USD
CY2019Q1	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	111783000	USD
CY2019Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	25721000	USD
CY2019Q1	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-17305000	USD
CY2019Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1268000	USD
CY2019Q1	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-16037000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	9684000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3194000	USD
CY2019Q1	gff	Income Loss Before Equity Method Investments After Income Taxes IncomeLossBeforeEquityMethodInvestmentsAfterIncomeTaxes	6490000	USD
CY2019Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	6490000	USD
CY2019Q1	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-11000000	USD
CY2019Q1	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-3354000	USD
CY2019Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-7646000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	-1156000	USD
CY2019Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1724000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1114788000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	812835000	USD
	us-gaap	Gross Profit GrossProfit	301953000	USD
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	244265000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	57688000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-32511000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-6690000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1393000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-37808000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	19880000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8373000	USD
	gff	Income Loss Before Equity Method Investments After Income Taxes IncomeLossBeforeEquityMethodInvestmentsAfterIncomeTaxes	11507000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
	us-gaap	Net Income Loss NetIncomeLoss	11507000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	3514000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	1060155000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	779605000	USD
	us-gaap	Gross Profit GrossProfit	280550000	USD
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	225537000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	55013000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-33636000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2272000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-31364000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	23649000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8406000	USD
	gff	Income Loss Before Equity Method Investments After Income Taxes IncomeLossBeforeEquityMethodInvestmentsAfterIncomeTaxes	15243000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	15243000	USD
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-11000000	USD
	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-3354000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-7646000	USD
	us-gaap	Net Income Loss NetIncomeLoss	7597000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	5027000	USD
	us-gaap	Net Income Loss NetIncomeLoss	11507000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-60843000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	22519000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	10531000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	290000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-32760000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	7479000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1061343000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	939071000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	13176000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	7349000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	83000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	94351000	USD
	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	-1994000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-2107000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-3353000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	72377000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	69024000	USD
	us-gaap	Net Income Loss NetIncomeLoss	7597000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-7646000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-55006000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	17418000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	9219000	USD
	us-gaap	Payments For Proceeds From Investments PaymentsForProceedsFromInvestments	149000	USD
	gff	Proceeds From Payments For Insurance Settlement Investing Activities ProceedsFromPaymentsForInsuranceSettlementInvestingActivities	-10604000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	62000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-37328000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1478000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	143101000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	48169000	USD
	us-gaap	Payment For Contingent Consideration Liability Financing Activities PaymentForContingentConsiderationLiabilityFinancingActivities	1686000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	945000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	6847000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	83000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	84059000	USD
	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	-3438000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-66000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-11779000	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	69758000	USD
CY2019Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	57979000	USD

Files In Submission

Name	View Source	Status
0000050725-20-000043-index-headers.html	Edgar Link	pending
0000050725-20-000043-index.html	Edgar Link	pending
0000050725-20-000043.txt	Edgar Link	pending
0000050725-20-000043-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
gff-20200331.xsd	Edgar Link	pending
gff-20200331_cal.xml	Edgar Link	unprocessable
gff-20200331_def.xml	Edgar Link	unprocessable
gff-20200331_lab.xml	Edgar Link	unprocessable
gff-20200331_pre.xml	Edgar Link	unprocessable
gff3-31x202010q.htm	Edgar Link	pending
gff3-31x202010q1311.htm	Edgar Link	pending
gff3-31x202010q1312.htm	Edgar Link	pending
gff3-31x202010q132.htm	Edgar Link	pending
gff3-31x202010q_htm.xml	Edgar Link	completed
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report.css	Edgar Link	pending
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$GFF
GRIFFON CORP Stock $gff

2020 Q1 Form 10-Q Financial Statement

#000005072520000043 Filed on April 29, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$GFF GRIFFON CORP Stock $gff

2020 Q1 Form 10-Q Financial Statement

#000005072520000043 Filed on April 29, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$GFF
GRIFFON CORP Stock $gff