Griffon (GFF) 10-Q 30 Jul 20 2020 Q3 Quarterly report Financial data

Cover Page

Cover Page	9 Months Ended
	Jun. 30, 2020shares
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2020
Document Transition Report	false
Entity File Number	1-06620
Entity Registrant Name	GRIFFON CORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	11-1893410
Entity Address, Address Line One	712 Fifth Ave, 18th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10019
City Area Code	212
Local Phone Number	957-5000
Title of 12(b) Security	Common Stock, $0.25 par value
Trading Symbol	GFF
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	47,425,488
Current Fiscal Year End Date	--09-30
Amendment Flag	false
Entity Central Index Key	0000050725
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2020	Sep. 30, 2019
CURRENT ASSETS
Cash and equivalents	$ 71,999	$ 72,377
Accounts receivable, net of allowances of $13,901 and $7,881	359,464	264,450
Contract costs and recognized income not yet billed, net of progress payments of $28,981 and $13,861	92,143	105,111
Inventories	411,028	442,121
Prepaid and other current assets	51,365	40,799
Assets of discontinued operations	1,951	321
Total Current Assets	987,950	925,179
PROPERTY, PLANT AND EQUIPMENT, net	335,318
PROPERTY, PLANT AND EQUIPMENT, net		337,326
OPERATING LEASE RIGHT-OF-USE ASSETS	154,955
GOODWILL	439,667	437,067
INTANGIBLE ASSETS, net	354,384	356,639
OTHER ASSETS	31,860	15,840
ASSETS OF DISCONTINUED OPERATIONS	6,086	2,888
Total Assets	2,310,220	2,074,939
CURRENT LIABILITIES
Notes payable and current portion of long-term debt	9,235	10,525
Accounts payable	218,024	250,576
Accrued liabilities	176,164	124,665
Current portion of operating lease liabilities	29,018
Liabilities of discontinued operations	3,730	4,333
Total Current Liabilities	436,171	390,099
LONG-TERM DEBT, net	1,123,365	1,093,749
LONG-TERM OPERATING LEASE LIABILITIES	131,650
OTHER LIABILITIES	104,298	109,997
LIABILITIES OF DISCONTINUED OPERATIONS	6,281	3,331
Total Liabilities	1,801,765	1,597,176
COMMITMENTS AND CONTINGENCIES - See Note 21
SHAREHOLDERS’ EQUITY
Total Shareholders’ Equity	508,455	477,763
Total Liabilities and Shareholders’ Equity	$ 2,310,220	$ 2,074,939

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Sep. 30, 2019
Statement of Financial Position [Abstract]
Accounts receivable, net allowances	$ 13,901	$ 7,881
Contract costs, net of progress payments	$ 28,981	$ 13,861

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	COMMON STOCK	CAPITAL IN EXCESS OF PAR VALUE	RETAINED EARNINGS	TREASURY SHARES	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	DEFERRED COMPENSATION	Cumulative Effect, Period of Adoption, Adjustment	[1]	Cumulative Effect, Period of Adoption, AdjustmentRETAINED EARNINGS	[1]
Balance (in shares) at Sep. 30, 2018		81,520			35,846
Balance at Sep. 30, 2018	$ 474,391	$ 20,380	$ 503,396	$ 550,523	$ (534,830)	$ (34,112)	$ (30,966)	$ (5,673)		$ (5,673)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	8,753			8,753
Dividend	(3,143)			(3,143)
Shares withheld on employee taxes on vested equity awards (in shares)					83
Shares withheld on employee taxes on vested equity awards	(1,058)				$ (1,058)
Amortization of deferred compensation	856						856
Common stock acquired (in shares)					29
Common stock acquired	(290)				$ (290)
Equity awards granted, net (in shares)		1,201
Equity awards granted, net	0	$ 300	(300)
ESOP allocation of common stock	(8)		(8)
Stock-based compensation	2,933		2,933
Stock-based consideration	250		250
Other comprehensive income, net of tax	(5,450)					(5,450)
Balance (in shares) at Dec. 31, 2018		82,721			35,958
Balance at Dec. 31, 2018	$ 471,561	$ 20,680	506,271	550,460	$ (536,178)	(39,562)	(30,110)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201409Member
Balance (in shares) at Sep. 30, 2018		81,520			35,846
Balance at Sep. 30, 2018	$ 474,391	$ 20,380	503,396	550,523	$ (534,830)	(34,112)	(30,966)	$ (5,673)		$ (5,673)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	21,192
Other comprehensive income, net of tax	(3,605)
Balance (in shares) at Jun. 30, 2019		82,769			35,969
Balance at Jun. 30, 2019	488,165	$ 20,692	514,639	555,780	$ (536,308)	(37,717)	(28,921)
Balance (in shares) at Dec. 31, 2018		82,721			35,958
Balance at Dec. 31, 2018	471,561	$ 20,680	506,271	550,460	$ (536,178)	(39,562)	(30,110)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	(1,156)			(1,156)
Dividend	(3,704)			(3,704)
Shares withheld on employee taxes on vested equity awards (in shares)					3
Shares withheld on employee taxes on vested equity awards	(48)				$ (48)
Amortization of deferred compensation	507						507
Common stock acquired (in shares)					8
Common stock acquired	(82)				$ (82)
Equity awards granted, net (in shares)		48
Equity awards granted, net	0	$ 12	(12)
ESOP allocation of common stock	601		601
Stock-based compensation	3,422		3,422
Stock-based consideration	303		303
Other comprehensive income, net of tax	2,880					2,880
Balance (in shares) at Mar. 31, 2019		82,769			35,969
Balance at Mar. 31, 2019	474,284	$ 20,692	510,585	545,600	$ (536,308)	(36,682)	(29,603)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	13,595			13,595
Dividend	(3,415)			(3,415)
Amortization of deferred compensation	682						682
ESOP allocation of common stock	435		435
Stock-based compensation	3,332		3,332
Stock-based consideration	287		287
Other comprehensive income, net of tax	(1,035)					(1,035)
Balance (in shares) at Jun. 30, 2019		82,769			35,969
Balance at Jun. 30, 2019	488,165	$ 20,692	514,639	555,780	$ (536,308)	(37,717)	(28,921)
Balance (in shares) at Sep. 30, 2019		82,775			35,969
Balance at Sep. 30, 2019	477,763	$ 20,694	519,017	568,516	$ (536,308)	(65,916)	(28,240)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	10,612			10,612
Dividend	(3,392)			(3,392)
Shares withheld on employee taxes on vested equity awards (in shares)					80
Shares withheld on employee taxes on vested equity awards	(1,758)				$ (1,758)
Amortization of deferred compensation	629						629
Equity awards granted, net (in shares)		182
Equity awards granted, net	0	$ 45	(45)
ESOP allocation of common stock	609		609
Stock-based compensation	3,150		3,150
Stock-based consideration	239		239
Other comprehensive income, net of tax	6,841					6,841
Balance (in shares) at Dec. 31, 2019		82,957			36,049
Balance at Dec. 31, 2019	494,693	$ 20,739	522,970	575,736	$ (538,066)	(59,075)	(27,611)
Balance (in shares) at Sep. 30, 2019		82,775			35,969
Balance at Sep. 30, 2019	477,763	$ 20,694	519,017	568,516	$ (536,308)	(65,916)	(28,240)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	33,338
Other comprehensive income, net of tax	709
Balance (in shares) at Jun. 30, 2020		83,735			36,310
Balance at Jun. 30, 2020	$ 508,455	$ 20,934	531,387	591,482	$ (543,787)	(65,207)	(26,354)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201602Member
Balance (in shares) at Dec. 31, 2019		82,957			36,049
Balance at Dec. 31, 2019	$ 494,693	$ 20,739	522,970	575,736	$ (538,066)	(59,075)	(27,611)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	895			895
Dividend	(3,422)			(3,422)
Shares withheld on employee taxes on vested equity awards (in shares)					261
Shares withheld on employee taxes on vested equity awards	(5,721)				$ (5,721)
Amortization of deferred compensation	629						629
Equity awards granted, net (in shares)		784
Equity awards granted, net	0	$ 196	(196)
ESOP allocation of common stock	435		435
Stock-based compensation	3,662		3,662
Stock-based consideration	117		117
Other comprehensive income, net of tax	(14,834)					(14,834)
Balance (in shares) at Mar. 31, 2020		83,741			36,310
Balance at Mar. 31, 2020	476,454	$ 20,935	526,988	573,209	$ (543,787)	(73,909)	(26,982)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	21,831			21,831
Dividend	(3,558)			(3,558)
Amortization of deferred compensation	628						628
Equity awards granted, net (in shares)		(6)
Equity awards granted, net	0	$ (1)	1
ESOP allocation of common stock	352		352
Stock-based compensation	3,930		3,930
Stock-based consideration	116		116
Other comprehensive income, net of tax	8,702					8,702
Balance (in shares) at Jun. 30, 2020		83,735			36,310
Balance at Jun. 30, 2020	$ 508,455	$ 20,934	$ 531,387	$ 591,482	$ (543,787)	$ (65,207)	$ (26,354)
[1]	See Note 14 - Recent Accounting Pronouncements and Note 3 - Revenue for additional information.

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Revenue	$ 632,061	$ 574,970	$ 1,746,849	$ 1,635,125
Cost of goods and services	467,058	420,487	1,279,893	1,200,092
Gross profit	165,003	154,483	466,956	435,033
Selling, general and administrative expenses	113,509	117,989	357,774	343,526
Income from operations	51,494	36,494	109,182	91,507
Other income (expense)
Interest expense	(16,725)	(17,288)	(49,807)	(51,334)
Interest income	140	201	711	611
Loss from debt extinguishment, net	(1,235)	0	(7,925)	0
Other, net	806	979	2,199	3,251
Total other expense, net	(17,014)	(16,108)	(54,822)	(47,472)
Income before taxes from continuing operations	34,480	20,386	54,360	44,035
Provision for income taxes	12,649	6,258	21,022	14,664
Income from continuing operations	21,831	14,128	33,338	29,371
Discontinued operations:
Loss from operations of discontinued operations	0	0	0	(11,000)
Provision (benefit) for income taxes	0	533	0	(2,821)
Loss from discontinued operations	0	(533)	0	(8,179)
Net income	$ 21,831	$ 13,595	$ 33,338	$ 21,192
Income from continuing operations (in dollars per share)	$ 0.52	$ 0.34	$ 0.80	$ 0.72
Loss from discontinued operations (in dollars per share)	0	(0.01)	0	(0.20)
Basic earnings per common share (in dollars per share)	$ 0.52	$ 0.33	$ 0.80	$ 0.52
Basic weighted-average shares outstanding (in shares)	41,712	40,967	41,483	40,888
Income from continuing operations (in dollars per share)	$ 0.50	$ 0.33	$ 0.76	$ 0.69
Income (loss) from discontinued operations (in dollars per share)	0	(0.01)	0	(0.19)
Diluted earnings per common share (in dollars per share)	$ 0.50	$ 0.31	$ 0.76	$ 0.50
Diluted weighted-average shares outstanding (in shares)	43,774	43,164	43,818	42,649
Dividends paid per common share (in dollars per share)	$ 0.0750	$ 0.0725	$ 0.2250	$ 0.2175
Net income	$ 21,831	$ 13,595	$ 33,338	$ 21,192
Other comprehensive income (loss), net of taxes:
Foreign currency translation adjustments	9,508	(1,092)	(493)	(3,943)
Pension and other post retirement plans	1,139	184	2,480	552
Change in cash flow hedges	(1,945)	(127)	(1,278)	(214)
Total other comprehensive income (loss), net of taxes	8,702	(1,035)	709	(3,605)
Comprehensive income, net	$ 30,533	$ 12,560	$ 34,047	$ 17,587

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 33,338	$ 21,192
Net loss from discontinued operations	0	8,179
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	47,067	46,172
Stock-based compensation	12,809	11,547
Asset impairment charges - restructuring	4,388	0
Provision for losses on accounts receivable	512	306
Amortization of debt discounts and issuance costs	2,871	4,133
Loss from debt extinguishment, net	7,925	0
Deferred income taxes	448	(353)
Gain on sale of assets and investments	(261)	(111)
Non-cash lease expense	28,648	0
Change in assets and liabilities, net of assets and liabilities acquired:
Increase in accounts receivable and contract costs and recognized income not yet billed	(81,718)	(33,223)
(Increase) decrease in inventories	34,822	(18,009)
Increase in prepaid and other assets	(17,393)	(3,921)
Decrease in accounts payable, accrued liabilities, income taxes payable and operating lease liabilities	(18,112)	(22,688)
Other changes, net	600	1,758
Net cash provided by operating activities	55,944	14,982
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment	(34,751)	(27,794)
Acquired businesses, net of cash acquired	(10,531)	(9,219)
Payments related to sale of business	0	(9,500)
Insurance payments	0	(10,604)
Proceeds from sale of assets	339	104
Investment purchase	(130)	(149)
Net cash used in investing activities	(45,073)	(57,162)
CASH FLOWS FROM FINANCING ACTIVITIES:
Dividends paid	(10,639)	(10,262)
Purchase of shares for treasury	(7,479)	(1,478)
Proceeds from long-term debt	1,230,618	156,800
Payments of long-term debt	(1,205,231)	(108,260)
Financing costs	(16,543)	(1,012)
Contingent consideration for acquired businesses	0	(1,686)
Other, net	(31)	(197)
Net cash provided by (used in) financing activities	(9,305)	33,905
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash used in operating activities	(2,899)	(3,874)
Net cash provided by investing activities	418	0
Net cash used in financing activities	0	0
Net cash used in discontinued operations	(2,481)	(3,874)
Effect of exchange rate changes on cash and equivalents	537	503
NET DECREASE IN CASH AND EQUIVALENTS	(378)	(11,646)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	72,377	69,758
CASH AND EQUIVALENTS AT END OF PERIOD	$ 71,999	$ 58,112

DESCRIPTION OF BUSINESS AND BAS

DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	9 Months Ended
	Jun. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION About Griffon Corporation Griffon Corporation (the “Company”, “Griffon”, "we" or "us") is a diversified management and holding company that conducts business through wholly-owned subsidiaries. Griffon oversees the operations of its subsidiaries, allocates resources among them and manages their capital structures. Griffon provides direction and assistance to its subsidiaries in connection with acquisition and growth opportunities as well as in connection with divestitures. In order to further diversify, Griffon also seeks out, evaluates and, when appropriate, will acquire additional businesses that offer potentially attractive returns on capital. The Company was founded in 1959, is a Delaware corporation headquartered in New York, N.Y. and is listed on the New York Stock Exchange (NYSE:GFF). Griffon currently conducts its operations through three reportable segments: • Consumer and Professional Products ("CPP") conducts its operations through The AMES Companies, Inc. ("AMES"). Founded in 1774, AMES is the leading North American manufacturer and a global provider of branded consumer and professional tools and products for home storage and organization, landscaping, and enhancing outdoor lifestyles. CPP sells products globally through a portfolio of leading brands including True Temper, AMES, and ClosetMaid. • Home and Building Products ("HBP") conducts its operations through Clopay Corporation ("Clopay"). Founded in 1964, Clopay is the largest manufacturer and marketer of garage doors and rolling steel doors in North America. Residential and commercial sectional garage doors are sold through professional dealers and leading home center retail chains throughout North America under the brands Clopay, Ideal, and Holmes. Rolling steel door and grille products designed for commercial, industrial, institutional, and retail use are sold under the CornellCookson brand. • Defense Electronics ("DE") conducts its operations through Telephonics Corporation ("Telephonics"), founded in 1933, a globally recognized leading provider of highly sophisticated intelligence, surveillance and communications solutions for defense, aerospace and commercial customers. In March 2020, the World Health Organization declared the outbreak of COVID-19 a pandemic, which continues to spread throughout the U.S. and the world. The impact from the rapidly changing U.S. and global market and economic conditions due to the COVID-19 outbreak is uncertain, with disruptions to the business of our customers and suppliers, which could impact our business and consolidated results of operations and financial condition in the future. While we have not incurred significant disruptions to our manufacturing or to our supply chain thus far from the COVID-19 outbreak, we are unable to accurately predict the impact COVID-19 will have due to numerous uncertainties, including the severity of the disease, the duration of the outbreak, actions that may be taken by governmental authorities, the impact to our customers’ and suppliers’ businesses and other factors identified in Part II, Item 1A “Risk Factors” in this Form 10-Q. We will continue to evaluate the nature and extent of the impact to our business, consolidated results of operations, and financial condition. Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“US GAAP”) for interim financial information, and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, these financial statements do not include all the information and footnotes required by US GAAP for complete financial statements. As such, they should be read together with Griffon’s Annual Report on Form 10-K for the year ended September 30, 2019 , which provides a more complete explanation of Griffon’s accounting policies, financial position, operating results, business, properties and other matters. In the opinion of management, these financial statements reflect all adjustments considered necessary for a fair statement of interim results. Griffon’s CPP operations are seasonal; for this and other reasons, the financial results of the Company for any interim period are not necessarily indicative of the results for the full year. The condensed consolidated balance sheet information at September 30, 2019 was derived from the audited financial statements included in Griffon’s Annual Report on Form 10-K for the year ended September 30, 2019 . The condensed consolidated financial statements include the accounts of Griffon and all subsidiaries. Intercompany accounts and transactions have been eliminated in consolidation. The preparation of financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting periods. These estimates may be adjusted due to changes in economic, industry or customer financial conditions, as well as changes in technology or demand. Significant estimates include allowances for doubtful accounts receivable and returns, net realizable value of inventories, restructuring reserves, valuation of goodwill and intangible assets, percentage of completion method of accounting, pension assumptions, useful lives associated with depreciation and amortization of fixed and intangible assets, warranty reserves, sales incentive accruals, stock based compensation assumptions, income taxes and tax valuation reserves, environmental reserves, legal reserves, insurance reserves and the valuation of assets and liabilities of discontinued operations, acquisition assumptions used and the accompanying disclosures. These estimates are based on management’s best knowledge of current events and actions Griffon may undertake in the future. Actual results may ultimately differ from these estimates. Certain amounts in the prior year have been reclassified to conform to current year presentation.

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	9 Months Ended
	Jun. 30, 2020
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS The carrying values of cash and equivalents, accounts receivable, accounts and notes payable, and revolving credit and variable interest rate debt approximate fair value due to either the short-term nature of such instruments or the fact that the interest rate of the revolving credit and variable rate debt is based upon current market rates. Applicable accounting guidance establishes a fair value hierarchy requiring the Company to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. A financial instrument’s categorization within the hierarchy is based on the lowest level of input that is significant to the fair value measurement. The accounting guidance establishes three levels of inputs that may be used to measure fair value, as follows: • Level 1 inputs are measured and recorded at fair value based upon quoted prices in active markets for identical assets. • Level 2 inputs include inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of assets or liabilities. • Level 3 inputs are unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions. The fair values of Griffon’s 2028 senior notes approximated $980,000 on June 30, 2020 . Fair values were based upon quoted market prices (level 1 inputs). Insurance contracts with values of $3,324 at June 30, 2020 are measured and recorded at fair value based upon quoted prices in active markets for similar assets (level 2 inputs) and are included in Prepaid and other current assets on the Consolidated Balance Sheets. Items Measured at Fair Value on a Recurring Basis At June 30, 2020 , trading securities, measured at fair value based on quoted prices in active markets for similar assets (level 2 inputs), with a fair value of $3,028 ( $2,365 cost basis), were included in Prepaid and other current assets on the Consolidated Balance Sheets. Realized and unrealized gains and losses on trading securities are included in Other income in the Consolidated Statements of Operations and Comprehensive Income (Loss). In the normal course of business, Griffon’s operations are exposed to the effects of changes in foreign currency exchange rates. To manage these risks, Griffon may enter into various derivative contracts such as foreign currency exchange contracts, including forwards and options. As of June 30, 2020 , Griffon entered into several such contracts in order to lock into a foreign currency rate for planned settlements of trade and inter-company liabilities payable in US dollars. At June 30, 2020 , Griffon had $43,500 of Australian dollar contracts at a weighted average rate of $1.46 which qualified for hedge accounting (level 2 inputs). These hedges were all deemed effective as cash flow hedges with gains and losses related to changes in fair value deferred and recorded in Accumulated other comprehensive income (loss) ("AOCI") and Prepaid and other current assets, or Accrued liabilities, until settlement. Upon settlement, gains and losses are recognized in the Consolidated Statements of Operations and Comprehensive Income (Loss) in Cost of goods and services ("COGS"). AOCI included deferred losses of $1,095 ( $712 , net of tax) at June 30, 2020 and gains of $556 and $1,550 were recorded in COGS during the three and nine months ended June 30, 2020 , respectively, for all settled contracts. All contracts expire in 15 to 209 days. At June 30, 2020 , Griffon had $3,125 and $3,000 of Canadian and British Pound dollar contracts, respectively, at a weighted average rate of $1.36 and $0.81 , respectively. The contracts, which protect Canadian and United Kingdom operations from currency fluctuations for US dollar based purchases, do not qualify for hedge accounting. For the three and nine months ended June 30, 2020 , fair value losses of $222 and $23 were recorded to Other assets and to Other income for the outstanding contracts, based on similar contract values (level 2 inputs). Realized gains of $115 and $202 were recorded in Other income during the three and nine months ended June 30, 2020 , respectively, for all settled contracts. All contracts expire in 2 to 328

REVENUE

REVENUE	9 Months Ended
	Jun. 30, 2020
Revenue from Contract with Customer [Abstract]
REVENUE	REVENUE The Company recognizes revenue when performance obligations identified under the terms of contracts with its customers are satisfied. A performance obligation is a promise in a contract to transfer a distinct good or service, or a bundle of goods or services, to the customer. A contract with a customer is an agreement which both parties have approved, that creates enforceable rights and obligations, has commercial substance and with respect to which payment terms are identified and collectability is probable. Once the Company has entered a contract or purchase order, it is evaluated to identify performance obligations. For each performance obligation, revenue is recognized when control of the promised products is transferred to the customer, or services are satisfied under the contract or purchase order, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those products or services (the transaction price). A contract's transaction price is allocated to each distinct performance obligation and recognized as revenue when each performance obligation is satisfied. A majority of the Company’s contracts have a single performance obligation which represents, in most cases, the product being sold to the customer. To a lesser extent, some contracts include multiple performance obligations such as a product, the related installation, and extended warranty services. These contracts require judgment in determining the number of performance obligations. Over 80% of the Company’s performance obligations are recognized at a point in time that relates to the manufacture and sale of a broad range of products and components within the CPP and HBP segments, and revenue is recognized when title, and risk and rewards of ownership, have transferred to the customer. A majority of CPP and HBP segment revenue is short cycle in nature with shipments occurring within one year from order and does not include a material long-term financing component, implicitly or explicitly. Less than 20% of the Company’s performance obligations are recognized over time or under the percentage-of-completion method; these relate to prime or subcontractors from contract awards with the U.S. Government, as well as foreign governments and other commercial customers within our DE segment. These contracts are typically long-term in nature, usually greater than one year and do not include a material long-term financing component, either implicitly or explicitly. Revenue and profits from such contracts are recognized under the percentage-of-completion (over time) method of accounting. Revenue and profits on fixed-price contracts that contain engineering as well as production requirements are recorded based on the ratio of total actual incurred costs to date to the total estimated costs for each contract (cost-to-cost method). Sales recognized over time are generally accounted for using an input measure to determine progress completed at the end of the period. Adjustments to estimates for a contract's estimated costs at completion and estimated profit or loss are often required as experience is gained, more information is obtained (even though the scope of work required under the contract may or may not change) and contract modifications occur. The impact of such adjustments to estimates is made on a cumulative basis in the period when such information has become known. For the three and nine months ended June 30, 2020 , income from operations included net unfavorable catch up adjustments approximating $4,100 and $9,344 , respectively. Gross profit is impacted by a variety of factors, including the mix of products, systems and services, production efficiencies, price competition and general economic conditions. We believe that cumulative costs incurred to date as a percentage of estimated total contract costs at completion is an appropriate measure of progress towards satisfaction of performance obligations, as it most accurately depicts the progress of our work and transfer of control to our customers. For contracts in which anticipated total costs exceed the total expected revenue, an estimated loss is recognized in the period when identifiable. A provision for the entire amount of the estimated loss is recorded on a cumulative basis, and is recorded as a reduction to gross margin on the Consolidated Statements of Operations and Comprehensive Income (Loss). These provisions had an immaterial impact on Griffon's Consolidated Financial Statements. The estimated remaining costs to complete loss contracts as of June 30, 2020 and September 30, 2019 were approximately $8,264 and $9,790 , respectively. For a complete explanation of Griffon’s revenue accounting policies, this note should be read in conjunction with Griffon’s Annual Report on Form 10-K for the year ended September 30, 2019 . See Note 12 - Business Segments for revenue from contracts with customers disaggregated by end markets, segments and geographic location. Transaction Price Allocated to the Remaining Performance Obligations On June 30, 2020 , we had $350,443 of remaining performance obligations, which we also refer to as total backlog. We expect to recognize approximately 72% of our remaining performance obligations as revenue within one year, with the balance to be completed thereafter. Backlog represents the dollar value of funded orders for which work has not been performed. Backlog generally increases with bookings, and converts into revenue as we incur costs related to contractual commitments or the shipment of product. Given the nature of our business and a larger dependency on international customers, our bookings, and therefore our backlog, is impacted by the longer maturation cycles resulting in delays in the timing and amounts of such awards, which are subject to numerous factors, including fiscal constraints placed on customer budgets; political uncertainty; the timing of customer negotiations; and the timing of governmental approvals. Contract Balances Contract assets were $92,143 as of June 30, 2020 compared to $105,111 as of September 30, 2019. The $12,968 decrease in our contract assets balance was primarily due to the timing of billings and work performed on various radar and surveillance programs. Contract assets primarily relate to the Company's right to consideration for work completed but not billed at the reporting date and are recorded in Contract costs and recognized income not yet billed, net of progress payments in the Consolidated Balance Sheets. Contract assets are transferred to receivables when the right to consideration becomes unconditional. Contract costs and recognized income not yet billed consists of amounts accounted for under the percentage of completion method of accounting, and represent recoverable costs and accrued profit that cannot yet be invoiced under the terms of certain long-term contracts. Amounts will be invoiced when applicable contract terms, such as the achievement of specified milestones or product delivery, are met. At June 30, 2020 and September 30, 2019, approximately $7,058 and $13,100 , respectively, of contract costs and recognized income not yet billed were expected to be collected after one year. As of June 30, 2020 , Contract costs and recognized income not yet billed included approximately $1,874 of reserves for contract risk. As of September 30, 2019, Contract costs and recognized income not yet billed included no reserves for contract risk. Contract liabilities were $20,719 as of June 30, 2020 compared to $26,259 as of September 30, 2019. The $5,540

ACQUISITIONS

ACQUISITIONS	9 Months Ended
	Jun. 30, 2020
Business Combinations [Abstract]
ACQUISITIONS	ACQUISITIONS Griffon accounts for acquisitions under the acquisition method, in which assets acquired and liabilities assumed are recorded at fair value as of the date of acquisition using a method substantially similar to the goodwill impairment test methodology (level 3 inputs). The operating results of the acquired companies are included in Griffon’s consolidated financial statements from the date of acquisition; in each instance, Griffon is in the process of finalizing the initial purchase price allocation unless otherwise noted. On November 29, 2019, AMES acquired 100% of the outstanding stock of Vatre Group Limited ("Apta"), a leading United Kingdom supplier of innovative garden pottery and associated products sold to leading UK and Ireland garden centers for approximately $10,500 (GBP 8,750 ), inclusive of a post-closing working capital adjustment, net of cash acquired. This acquisition broadens AMES' product offerings in the UK market and increases its in-country operational footprint. The purchase price was primarily allocated to goodwill of GBP 2,418 , acquired intangible assets of GBP 3,454 , inventory of GBP 2,914 , accounts receivable and other assets of GBP 2,492 and accounts payable and other accrued liabilities of GBP 2,734 . During the nine months ended June 30, 2020 , the Company incurred acquisition costs of $2,960 . The Company did no t incur acquisition costs in the three months ended June 30, 2020. The Company did no t incur acquisition costs in the three and nine months ended June 30, 2019.

INVENTORIES

INVENTORIES	9 Months Ended
	Jun. 30, 2020
Inventory Disclosure [Abstract]
INVENTORIES	INVENTORIES Inventories are stated at the lower of cost (first-in, first-out or average) or market. The following table details the components of inventory: At June 30, 2020 At September 30, 2019 Raw materials and supplies $ 131,021 $ 121,791 Work in process 90,343 93,830 Finished goods 189,664 226,500 Total $ 411,028 $ 442,121

PROPERTY, PLANT AND EQUIPMENT

PROPERTY, PLANT AND EQUIPMENT	9 Months Ended
	Jun. 30, 2020
Property, Plant and Equipment [Abstract]
PROPERTY, PLANT AND EQUIPMENT	PROPERTY, PLANT AND EQUIPMENT The following table details the components of property, plant and equipment, net: At June 30, 2020 At September 30, 2019 Land, building and building improvements $ 159,225 $ 133,036 Machinery and equipment 585,298 580,698 Leasehold improvements 51,738 49,808 796,261 763,542 Accumulated depreciation and amortization (460,943 ) (426,216 ) Total $ 335,318 $ 337,326 Depreciation and amortization expense for property, plant and equipment was $13,142 and $13,089 for the quarters ended June 30, 2020 and 2019 , respectively, and $39,890 and $38,736 for the nine months ended June 30, 2020 and 2019, respectively. Depreciation included in SG&A expenses was $4,852 and $4,822 for the quarters ended June 30, 2020 and 2019, respectively, and $14,713 and $14,264 for the nine months ended June 30, 2020 and 2019, respectively. Remaining components of depreciation, attributable to manufacturing operations, are included in Cost of goods and services. Except as described in Note 16, Restructuring Charges, no event or indicator of impairment occurred during the nine months ended June 30, 2020

GOODWILL AND OTHER INTANGIBLES

GOODWILL AND OTHER INTANGIBLES	9 Months Ended
	Jun. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND OTHER INTANGIBLES	GOODWILL AND OTHER INTANGIBLES The following table provides changes in the carrying value of goodwill by segment during the nine months ended June 30, 2020 : At September 30, 2019 Goodwill from acquisitions Other At June 30, 2020 Consumer and Professional Products $ 227,269 $ 3,125 $ (525 ) $ 229,869 Home and Building Products 191,253 — — 191,253 Defense Electronics 18,545 — — 18,545 Total $ 437,067 $ 3,125 $ (525 ) $ 439,667 The following table provides the gross carrying value and accumulated amortization for each major class of intangible assets: At June 30, 2020 At September 30, 2019 Gross Carrying Amount Accumulated Amortization Average Life (Years) Gross Carrying Amount Accumulated Amortization Customer relationships & other $ 184,445 $ 64,018 23 $ 183,515 $ 57,783 Technology and patents 19,348 8,075 13 19,167 7,329 Total amortizable intangible assets 203,793 72,093 202,682 65,112 Trademarks 222,684 — 219,069 — Total intangible assets $ 426,477 $ 72,093 $ 421,751 $ 65,112 Amortization expense for intangible assets was $2,381 and $2,506 for the quarters ended June 30, 2020 and 2019, respectively, and $7,177 and $7,436 for the nine months ended June 30, 2020 and 2019. Amortization expense for the remainder of 2020 and the next five fiscal years and thereafter, based on current intangible balances and classifications, is estimated as follows: 2020 - $2,416 ; 2021 - $9,387 ; 2022 - $9,387 ; 2023 - $9,234 ; 2024 - $9,208 ; 2025 - $9,208 ; thereafter $82,860 . Griffon performs its annual goodwill impairment testing in the fourth quarter of each year. The 2019 impairment testing resulted in all three reporting units having fair values substantially in excess of their carrying values. In addition to the annual impairment test, the Company is required to regularly assess whether a triggering event has occurred which would require interim impairment testing. Given the general deterioration in economic and market conditions surrounding the COVID-19 pandemic, the Company considered the impact that the COVID-19 pandemic may have on its near and long-term forecasts and completed an interim impairment test as of March 31, 2020. The company determined that there is no impairment to either its goodwill or indefinite-lived intangible assets at March 31, 2020. During the quarter ended June 30, 2020, the Company determined there were no triggering events.

INCOME TAXES

INCOME TAXES	9 Months Ended
	Jun. 30, 2020
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES During the quarter ended June 30, 2020 , the Company recognized a tax provision of $12,649 on income before taxes from continuing operations of $34,480 , compared to a tax provision of $6,258 on income before taxes from continuing operations of $20,386 in the comparable prior year quarter. The current year quarter included restructuring charges of $1,633 ( $1,224 , net of tax), loss from debt extinguishment of $1,235 ( $969 , net of tax) and net discrete tax and certain other tax provisions, net of $1,828 , that affect comparability. The prior year quarter included net discrete tax and certain other tax benefits of $669 that affect comparability. Excluding these items, the effective tax rates for the quarters ended June 30, 2020 and 2019 were 30.8% and 34.0% , respectively. During the nine months ended June 30, 2020 , the Company recognized a tax provision of $21,022 on Income before taxes from continuing operations of $54,360 , compared to a tax provision of $14,664 on Income before taxes from continuing operations of $44,035 in the comparable prior year period. The nine month period ended June 30, 2020 included restructuring charges of $11,171 ( $8,377 , net of tax), acquisition costs of $2,960 ( $2,321 , net of tax), loss from debt extinguishment of $7,925 ( $6,214 , net of tax) and net discrete tax provisions of $1,248 . The nine month period ended June 30, 2019 included net discrete tax benefits of $299 . Excluding these items, the effective tax rates for the nine months ended June 30, 2020 and 2019 were 32.6% and 34.0% , respectively. In response to the COVID-19 outbreak, the U.S. Congress approved certain changes to the federal tax laws in March 2020. While we are still assessing the impact of the legislation, we do not expect there to be a material impact to our consolidated financial statements at this time.

LONG-TERM DEBT

LONG-TERM DEBT	9 Months Ended
	Jun. 30, 2020
Debt Disclosure [Abstract]
LONG-TERM DEBT	LONG-TERM DEBT At June 30, 2020 At September 30, 2019 Outstanding Balance Original Issuer Premium Capitalized Fees & Expenses Balance Sheet Coupon Interest Rate Outstanding Balance Original Issuer Premium Capitalized Fees & Expenses Balance Sheet Coupon Interest Rate Senior notes due 2028 (a) $ 1,000,000 $ 375 (14,877 ) $ 985,498 5.75 % $ — $ — $ — $ — — % Senior notes due 2022 (a) — — — — 5.25 % 1,000,000 867 (9,175 ) 991,692 5.25 % Revolver due 2025 (b) 104,181 — (2,544 ) 101,637 Variable 50,000 — (1,243 ) 48,757 Variable Capital lease - real estate (d) 11,564 — (36 ) 11,528 5.00 % 4,388 — (55 ) 4,333 5.00 % Non US lines of credit (e) — — (33 ) (33 ) Variable 17,576 — (45 ) 17,531 Variable Non US term loans (e) 30,736 — (172 ) 30,564 Variable 36,977 — (188 ) 36,789 Variable Other long term debt (f) 3,422 — (16 ) 3,406 Variable 5,190 — (18 ) 5,172 Variable Totals 1,149,903 375 (17,678 ) 1,132,600 1,114,131 867 (10,724 ) 1,104,274 less: Current portion (9,235 ) — — (9,235 ) (10,525 ) — — (10,525 ) Long-term debt $ 1,140,668 $ 375 $ (17,678 ) $ 1,123,365 $ 1,103,606 $ 867 $ (10,724 ) $ 1,093,749 Three Months Ended June 30, 2020 Three Months Ended June 30, 2019 Effective Interest Rate (1) Cash Interest Amort. Debt Amort. Debt Issuance Costs Total Interest Expense Effective Interest Rate (1) Cash Interest Amort. Debt Amort. Total Interest Expense Senior notes due 2028 (a) 5.8 % $ 12,219 $ — $ 277 $ 12,496 n/a $ — $ — $ — $ — Senior notes due 2022 (a) 6.2 % 1,960 11 155 2,126 5.7 % 13,125 68 950 14,143 Revolver due 2025 (b) Variable 1,597 — 134 1,731 Variable 2,282 — 220 2,502 ESOP Loans (c) n/a — — — — 7.2 % — — — — Capital lease - real estate (d) 6.3 % 33 — 6 39 5.6 % 78 — 7 85 Non US lines of credit (e) Variable 4 — (1 ) 3 Variable 4 — 3 7 Non US term loans (e) Variable 222 — 21 243 Variable 376 — 44 420 Other long term debt (f) Variable 102 — 1 103 Variable 149 — — 149 Capitalized interest (16 ) — — (16 ) (18 ) — — (18 ) Totals $ 16,121 $ 11 $ 593 $ 16,725 $ 15,996 $ 68 $ 1,224 $ 17,288 (1) n/a = not applicable Nine Months Ended June 30, 2020 Nine Months Ended June 30, 2019 Effective Interest Rate (1) Cash Interest Amort. Debt Amort. Debt Issuance Costs Total Interest Expense Effective Interest Rate (1) Cash Interest Amort. Debt Amort. Total Interest Expense Senior notes due 2028 (a) 5.9 % $ 17,785 $ — $ 412 $ 18,197 — % $ — $ — $ — $ — Senior notes due 2022 (a) 5.7 % 23,125 123 1,734 24,982 5.7 % 39,375 202 2,852 42,429 Revolver due 2025 (b) Variable 4,798 — 531 5,329 Variable 4,846 — 761 5,607 ESOP Loans (c) n/a — — — — 6.6 % 937 — 186 1,123 Capital lease - real estate (d) 6.1 % 146 — 19 165 5.5 % 294 — 19 313 Non US lines of credit (e) Variable 11 — 11 22 Variable 15 — 11 26 Non US term loans (e) Variable 786 — 40 826 Variable 1,273 — 97 1,370 Other long term debt (f) Variable 394 — 1 395 Variable 478 — 6 484 Capitalized interest (109 ) — — (109 ) (18 ) — — (18 ) Totals $ 46,936 $ 123 $ 2,748 $ 49,807 $ 47,200 $ 202 $ 3,932 $ 51,334 (a) On June 22, 2020, Griffon completed the add-on offering through a private placement $150,000 principal amount of its 5.75% senior notes due 2028, at 100.25% of par, to Griffon's previously issued $850,000 principal amount of its 5.75% senior notes due in 2028, at par, completed on February 19, 2020 (collectively, the “Senior Notes”). Proceeds from the Senior Notes were used to redeem the $1,000,000 of 5.25% senior notes due 2022 (the “2022 Senior Notes"). As of June 30, 2020 , outstanding Senior Notes due totaled $1,000,000 ; interest is payable semi-annually on March 1 and September 1. The Senior Notes are senior unsecured obligations of Griffon guaranteed by certain domestic subsidiaries, and subject to certain covenants, limitations and restrictions. On April 22, 2020, Griffon exchanged substantially all of the $850,000 Senior Notes for substantially identical Senior Notes registered under the Securities Act of 1933, as amended (the "Securities Act"), via an exchange offer. Griffon intends to complete an offer to exchange the remaining $150,000 Senior Notes for substantially identical Senior Notes registered under the Securities Act during the fourth quarter of fiscal 2020. The fair value of the 2028 Senior Notes approximated $980,000 on June 30, 2020 based upon quoted market prices (level 1 inputs). In connection with these transactions, Griffon capitalized $15,289 of underwriting fees and other expenses incurred related to the issuance and exchange of the Senior Notes, which will amortize over the term of such terms. Furthermore, all of the obligations associated with the 2022 Senior Notes were discharged. Additionally, Griffon recognized a $7,925 loss on the early extinguishment of debt of the 5.25% $1,000,000 2022 Senior Notes, comprised primarily of the write-off of $6,725 of remaining deferred financing fees, $607 of tender offer net premium expense and $593 of redemption interest expense. (b) On January 30, 2020, Griffon amended its revolving credit facility (as amended, the "Credit Agreement") to increase the maximum borrowing availability from $350,000 to $400,000 and extend its maturity date from March 22, 2021 to March 22, 2025. The amended agreement also modified certain other provisions of the facility. The facility includes a letter of credit sub-facility with a limit of $100,000 (increased from $50,000 ); a multi-currency sub-facility of $200,000 (increased from $100,000 ); and contains a customary accordion feature that permits us to request, subject to each lender's consent, an increase in the maximum aggregate amount that can be borrowed by up to an additional $100,000 (increased from $50,000 ). Borrowings under the Credit Agreement may be repaid and re-borrowed at any time. Interest is payable on borrowings at either a LIBOR or base rate benchmark rate, plus an applicable margin, which adjusts based on financial performance. Current margins are 1.25% for base rate loans and 2.25% for LIBOR loans. The Credit Agreement has certain financial maintenance tests including a maximum total leverage ratio, a maximum senior secured leverage ratio and a minimum interest coverage ratio, as well as customary affirmative and negative covenants, and events of default. The negative covenants place limits on Griffon's ability to, among other things, incur indebtedness, incur liens, and make restricted payments and investments. Borrowings under the Credit Agreement are guaranteed by Griffon’s material domestic subsidiaries and are secured, on a first priority basis, by substantially all domestic assets of the Company and the guarantors, and a pledge of not greater than 65% of the equity interest in Griffon’s material, first-tier foreign subsidiaries. At June 30, 2020 , there were $104,181 of outstanding borrowings under the Credit Agreement; outstanding standby letters of credit were $21,617 ; and $274,202 was available, subject to certain loan covenants, for borrowing at that date. (c) In August 2016 and as amended on June 30, 2017, Griffon’s ESOP entered into a Term Loan with a bank (the "ESOP Agreement"). The Term Loan interest rate was LIBOR plus 3.00% . The Term Loan required quarterly principal payments of $569 with a balloon payment due at maturity. The Term Loan was secured by shares purchased with the proceeds of the loan and with a lien on a specific amount of Griffon assets (which ranked pari passu with the lien granted on such assets under the Credit Agreement) and was guaranteed by Griffon. On March 13, 2019, the ESOP Term Loan was refinanced with an internal loan from Griffon which was funded with cash and a draw under its Credit Agreement. The internal loan interest rate is fixed at 2.91% , matures in June 2033 and requires quarterly payments of principal, currently $635 , and interest. The internal loan is secured by shares purchased with the proceeds of the loan. The amount outstanding on the internal loan at June 30, 2020 was $30,513 . (d) Two Griffon subsidiaries have finance leases outstanding for real estate located in Troy, Ohio and Ocala, Florida. The leases mature in 2021 and 2025 , respectively, and bear interest at fixed rates of approximately 5.0% and 2.9% , respectively. The Troy, Ohio lease is secured by a mortgage on the real estate and is guaranteed by Griffon. The Ocala, Florida lease contains one five -year renewal option. At June 30, 2020 , $11,528 was outstanding, net of issuance costs. (e) In November 2012, Garant G.P. (“Garant”) entered into a CAD 15,000 ( $10,974 as of June 30, 2020 ) revolving credit facility. The facility accrues interest at LIBOR (USD) or the Bankers Acceptance Rate (CDN) plus 1.3% per annum ( 1.46% LIBOR USD and 1.56% Bankers Acceptance Rate CDN as of June 30, 2020 ). The revolving facility matures in October 2022. Garant is required to maintain a certain minimum equity. At June 30, 2020 , there were no borrowings under the revolving credit facility with CAD 15,000 ( $10,974 as of June 30, 2020 ) available for borrowing. In July 2016 and as amended in March 2019, Griffon Australia Holdings Pty Ltd and its Australian subsidiaries (collectively, "Griffon Australia") entered into an AUD 29,625 term loan, AUD 20,000 revolver and AUD 10,000 receivable purchase facility agreement. The term loan requires quarterly principal payments of AUD 1,250 plus interest with a balloon payment of AUD 9,625 due upon maturity in March 2022, and accrues interest at Bank Bill Swap Bid Rate “BBSY” plus 1.95% per annum ( 2.09% at June 30, 2020 ). During the quarter ended June 30, 2020 , the term loan balance was reduced by AUD 5,000 , from AUD 23,375 to AUD 18,375 with proceeds from an AUD 5,000 increase in the commitment of the receivables purchase line from AUD 10,000 to AUD 15,000 . The term loan had an outstanding balance of AUD 17,125 ( $11,761 as of June 30, 2020 ). The revolving facility and receivable purchase facility mature in March 2022, but are renewable upon mutual agreement with the lender. The revolving facility and receivable purchase facility accrue interest at BBSY plus 1.9% and 1.35% , respectively, per annum ( 2.05% and 1.49% , respectively, at June 30, 2020 ). At June 30, 2020 , there were no borrowings under the revolver and the receivable purchase facility. The revolver, receivable purchase facility and the term loan are all secured by substantially all of the assets of Griffon Australia and its subsidiaries. Griffon Australia is required to maintain a certain minimum equity level and is subject to a maximum leverage ratio and a minimum fixed charges cover ratio. In July 2018, the AMES Companies UK Ltd and its subsidiaries (collectively, "AMES UK") entered into a GBP 14,000 term loan, GBP 4,000 mortgage loan and GBP 5,000 revolver. The term loan and mortgage loan require quarterly principal payments of GBP 350 and GBP 83 plus interest, respectively, and have balloon payments due upon maturity, July 2023, of GBP 7,700 and GBP 2,500 , respectively. The Term Loan and Mortgage Loans accrue interest at the GBP LIBOR Rate plus 2.25% and 1.8% , respectively ( 2.33% and 1.88% at June 30, 2020 , respectively). The revolving facility matures in June 2021, but is renewable upon mutual agreement with the lender, and accrues interest at the Bank of England Base Rate plus 1.75% ( 1.85% as of June 30, 2020 ). As of June 30, 2020 , the revolver had no outstanding balance while the term and mortgage loan balances amounted to GBP 15,398 ( $18,975 as of June 30, 2020). The revolver and the term loan are both secured by substantially all of the assets of AMES UK and its subsidiaries. AMES UK is subject to a maximum leverage ratio and a minimum fixed charges cover ratio. An invoice discounting arrangement was canceled and replaced by the above loan facilities. (f) Other long-term debt primarily consists of a loan with the Pennsylvania Industrial Development Authority, with the balance consisting of capital leases. At June 30, 2020 , Griffon and its subsidiaries were in compliance with the terms and covenants of all credit and loan agreements.

SHAREHOLDERS' EQUITY

SHAREHOLDERS' EQUITY	9 Months Ended
	Jun. 30, 2020
Stockholders' Equity Note [Abstract]
SHAREHOLDERS' EQUITY	SHAREHOLDERS’ EQUITY During 2020, the Company paid a quarterly cash dividend of $0.075 per share in each quarter, totaling $0.225 per share for the nine months ended June 30, 2020. During 2019, the Company paid a quarterly cash dividend of $0.0725 per share, totaling $0.29 per share for the year. A dividend payable was established for the holders of restricted shares; such dividends will be released upon vesting of the underlying restricted shares. In March 2019, the ESOP Term Loan was refinanced with a loan from Griffon which was funded with cash and a draw on its credit facility; dividends paid on allocated shares in the ESOP are allocated to participant accounts in the form of additional shares. On July 29, 2020, the Board of Directors declared a quarterly cash dividend of $0.075 per share, payable on September 17, 2020 to shareholders of record as of the close of business on August 20, 2020. Compensation expense for restricted stock and restricted stock units is recognized ratably over the required service period based on the fair value of the grant, calculated as the number of shares granted multiplied by the stock price on the date of grant and, for performance shares, the likelihood of achieving the performance criteria. Compensation expense for restricted stock granted to two senior executives is calculated as the maximum number of shares granted, upon achieving certain performance criteria, multiplied by the stock price as valued by a Monte Carlo Simulation Model. Compensation cost related to stock-based awards with graded vesting, generally over a period of three to four years, is recognized using the straight-line attribution method and recorded within SG&A expenses. On January 29, 2016, shareholders approved the Griffon Corporation 2016 Equity Incentive Plan ("Incentive Plan") under which awards of performance shares, performance units, stock options, stock appreciation rights, restricted shares, restricted stock units, deferred shares and other stock-based awards may be granted. On January 31, 2018, shareholders approved Amendment No. 1 to the Incentive Plan pursuant to which, among other things, 1,000,000 shares were added to the Incentive Plan; and on January 30, 2020, shareholders approved Amendment No. 2 to the Incentive Plan, pursuant to which 1,700,000 shares were added to the Incentive Plan. Options granted under the Incentive Plan may be either “incentive stock options” or nonqualified stock options, generally expire ten years after the date of grant and are granted at an exercise price of not less than 100% of the fair market value at the date of grant. The maximum number of shares of common stock available for award under the Incentive Plan is 5,050,000 ( 600,000 of which may be issued as incentive stock options), plus (i) any shares reserved for issuance under the 2011 Equity Incentive Plan as of the effective date of the Incentive Plan, and (ii) any shares underlying awards outstanding on such effective date under the 2011 Incentive Plan that are canceled or forfeited. As of June 30, 2020 , there were 1,063,148 shares available for grant. All grants outstanding under former equity plans will continue under their terms; no additional awards will be granted under such plans. During the first quarter of 2020, Griffon granted 216,523 shares of restricted stock and restricted stock units, subject to certain performance conditions, with vesting periods of three years , with a total fair value of $4,705 , or a weighted average fair value of $21.73 per share. During the second quarter of 2020, Griffon granted 804,674 shares of restricted stock. This included 99,772 shares of restricted stock to seven executives, subject to certain performance conditions, with vesting period of 34 months , with a total fair value of $2,200 , or weighted average fair value of $22.05 per share. Griffon also granted 44,902 restricted shares to the non-employee directors of Griffon with a vesting period of three years and a fair value of $990 , or a weighted average fair value of $22.05 per share. This also included 660,000 shares of restricted stock granted to two senior executives with a vesting period of four years and a two year post-vesting holding period, subject to the achievement of certain absolute and relative performance conditions relating to the price of Griffon's common stock. So long as the minimum performance condition is attained, the amount of shares that can vest will range from 480,000 to 660,000 . The total fair value of these restricted shares using the Monte Carlo Simulation model is approximately $9,534 , or a weighted average fair value of $14.45 per share. During the third quarter of 2020, Griffon granted 7,599 shares of restricted stock, subject to certain performance conditions, with vesting periods of three years , with a total fair value of $125 , or a weighted average fair value of $16.45 per share. The following table summarizes the Company’s compensation expense relating to all stock-based incentive plans: For the Three Months Ended June 30, For the Nine Months Ended June 30, 2020 2019 2020 2019 Restricted stock $ 3,930 $ 3,332 $ 10,742 $ 9,687 ESOP 577 715 2,067 1,860 Total stock based compensation $ 4,507 $ 4,047 $ 12,809 $ 11,547 On each of August 3, 2016 and August 1, 2018, Griffon’s Board of Directors authorized the repurchase of up to $50,000 of Griffon’s outstanding common stock. Under this share repurchase program, the Company may purchase shares in the open market, including pursuant to a 10b5-1 plan, or in privately negotiated transactions. During the quarter and nine months ended June 30, 2020 , Griffon did not purchase any shares of common stock under these repurchase programs. As of June 30, 2020 , an aggregate of $57,955 remains under Griffon's Board authorized repurchase programs. During the quarter ended June 30, 2020, there were no shares withheld to settle employee taxes due upon the vesting of restricted stock. During the nine months ended June 30, 2020 , 340,775 shares, with a market value of $7,409 , or $21.74 per share, respectively, were withheld to settle employee taxes due upon the vesting of restricted stock, and were added to treasury stock. Furthermore, during the nine months ended June 30, 2020 , an additional 3,307 shares, with a market value of $70 , or $21.22

EARNINGS PER SHARE (EPS)

EARNINGS PER SHARE (EPS)	9 Months Ended
	Jun. 30, 2020
Earnings Per Share [Abstract]
EARNINGS PER SHARE (EPS)	EARNINGS PER SHARE (EPS) Basic EPS (and diluted EPS in periods when a loss exists) was calculated by dividing income available to common shareholders by the weighted average number of shares of common stock outstanding during the period. Diluted EPS was calculated by dividing income available to common shareholders by the weighted average number of shares of common stock outstanding plus additional common shares that could be issued in connection with stock based compensation. The following table is a reconciliation of the share amounts (in thousands) used in computing earnings per share: Three Months Ended June 30, Nine Months Ended June 30, 2020 2019 2020 2019 Common shares outstanding 47,425 46,801 47,425 46,801 Unallocated ESOP shares (2,108 ) (2,314 ) (2,108 ) (2,314 ) Non-vested restricted stock (3,555 ) (3,426 ) (3,555 ) (3,426 ) Impact of weighted average shares (50 ) (94 ) (279 ) (173 ) Weighted average shares outstanding - basic 41,712 40,967 41,483 40,888 Incremental shares from stock based compensation 2,062 2,197 2,335 1,761 Weighted average shares outstanding - diluted 43,774 43,164 43,818 42,649

BUSINESS SEGMENTS

BUSINESS SEGMENTS	9 Months Ended
	Jun. 30, 2020
Segment Reporting [Abstract]
BUSINESS SEGMENTS	BUSINESS SEGMENTS In fiscal 2019, Griffon modified its reportable segment structure to provide investors with improved visibility after a series of portfolio repositioning actions which included the divestiture of the Plastics business, the acquisition of ClosetMaid and its subsequent integration into AMES, and the acquisition of CornellCookson by Clopay. The prior year amounts have been recast to reflect the recent change in Griffon's reporting segment structure. Griffon now reports its operations through three reportable segments from continuing operations, as follows: • CPP conducts its operations through AMES. Founded in 1774, AMES is the leading North American manufacturer and a global provider of branded consumer and professional tools and products for home storage and organization, landscaping, and enhancing outdoor lifestyles. CPP sells products globally through a portfolio of leading brands including True Temper, AMES, and ClosetMaid. • HBP conducts its operations through Clopay. Founded in 1964, Clopay is the largest manufacturer and marketer of garage doors and rolling steel doors in North America. Residential and commercial sectional garage doors are sold through professional dealers and leading home center retail chains throughout North America under the brands Clopay, Ideal, and Holmes. Rolling steel door and grille products designed for commercial, industrial, institutional, and retail use are sold under the CornellCookson brand. • DE conducts its operations through Telephonics, founded in 1933, a globally recognized leading provider of highly sophisticated intelligence, surveillance and communications solutions for defense, aerospace and commercial customers. Information on Griffon’s reportable segments from continuing operations is as follows: For the Three Months Ended June 30, For the Nine Months Ended June 30, REVENUE 2020 2019 2020 2019 Consumer and Professional Products $ 328,929 $ 273,710 $ 844,917 $ 777,916 Home and Building Products 219,164 221,521 670,374 631,615 Defense Electronics 83,968 79,739 231,558 225,594 Total consolidated net sales $ 632,061 $ 574,970 $ 1,746,849 $ 1,635,125 Disaggregation of Revenue Revenue from contracts with customers is disaggregated by end markets, segments and geographic location, as it more accurately depicts the nature and amount of the Company’s revenue. The following table presents revenue disaggregated by end market and segment: For the Three Months Ended June 30, For the Nine Months Ended June 30, 2020 2019 2020 2019 Residential repair and remodel $ 50,709 $ 35,416 $ 126,304 $ 101,015 Retail 177,271 148,596 441,795 424,537 Residential new construction 14,487 15,345 44,344 43,162 Industrial 9,303 12,880 30,461 34,054 International excluding North America 77,159 61,473 202,013 175,148 Total Consumer and Professional Products 328,929 273,710 844,917 777,916 Residential repair and remodel 109,876 112,730 332,681 316,368 Commercial construction 84,521 83,382 262,708 243,939 Residential new construction 24,767 25,409 74,985 71,308 Total Home and Building Products 219,164 221,521 670,374 631,615 U.S. Government 54,802 46,579 151,126 138,515 International 24,779 30,120 68,333 75,348 Commercial 4,387 3,040 12,099 11,731 Total Defense Electronics 83,968 79,739 231,558 225,594 Total Consolidated Revenue $ 632,061 $ 574,970 $ 1,746,849 $ 1,635,125 The following table presents revenue disaggregated by geography based on the location of the Company's customer: REVENUE BY GEOGRAPHIC AREA - DESTINATION For the Three Months Ended June 30, 2020 For the Nine Months Ended June 30, 2020 CPP HBP Defense Electronics Total CPP HBP Defense Electronics Total United States $ 232,544 $ 209,222 $ 56,294 $ 498,060 $ 584,114 $ 635,232 $ 157,508 $ 1,376,854 Europe 29,267 81 8,636 37,984 60,609 109 24,501 85,219 Canada 18,231 7,729 3,012 28,972 53,527 26,849 9,795 90,171 Australia 47,614 — 1,012 48,626 140,874 — 1,807 142,681 All other countries 1,273 2,132 15,014 18,419 5,793 8,184 37,947 51,924 Consolidated revenue $ 328,929 $ 219,164 $ 83,968 $ 632,061 $ 844,917 $ 670,374 $ 231,558 $ 1,746,849 REVENUE BY GEOGRAPHIC AREA - DESTINATION For the Three Months Ended June 30, 2019 For the Nine Months Ended June 30, 2019 CPP HBP Defense Electronics Total CPP HBP Defense Electronics Total United States $ 193,948 $ 206,489 $ 49,379 $ 449,816 $ 541,309 $ 592,261 $ 148,853 $ 1,282,423 Europe 25,663 31 8,387 34,081 53,871 77 27,188 81,136 Canada 16,246 9,867 2,855 28,968 54,456 27,832 8,542 90,830 Australia 35,829 163 838 36,830 121,617 613 2,426 124,656 All other countries 2,024 4,971 18,280 25,275 6,663 10,832 38,585 56,080 Consolidated revenue $ 273,710 $ 221,521 $ 79,739 $ 574,970 $ 777,916 $ 631,615 $ 225,594 $ 1,635,125 Griffon evaluates performance and allocates resources based on each segment's operating results before interest income and expense, income taxes, depreciation and amortization, unallocated amounts (mainly corporate overhead), restructuring charges, loss from debt extinguishment and acquisition related expenses, as well as other items that may affect comparability, as applicable (“Segment adjusted EBITDA”). Griffon believes this information is useful to investors for the same reason. The following table provides a reconciliation of Segment adjusted EBITDA to Income before taxes from continuing operations: For the Three Months Ended June 30, For the Nine Months Ended June 30, 2020 2019 2020 2019 Segment adjusted EBITDA: Consumer and Professional Products $ 37,115 $ 23,970 $ 84,068 $ 73,151 Home and Building Products 39,299 33,851 110,635 85,283 Defense Electronics 4,122 7,280 12,845 17,001 Segment adjusted EBITDA 80,536 65,101 207,548 175,435 Unallocated amounts, excluding depreciation (11,080 ) (12,033 ) (34,969 ) (34,505 ) Adjusted EBITDA 69,456 53,068 172,579 140,930 Net interest expense (16,585 ) (17,087 ) (49,096 ) (50,723 ) Depreciation and amortization (15,523 ) (15,595 ) (47,067 ) (46,172 ) Loss from debt extinguishment (1,235 ) — (7,925 ) — Restructuring charges (1,633 ) — (11,171 ) — Acquisition costs — — (2,960 ) — Income before taxes from continuing operations $ 34,480 $ 20,386 $ 54,360 $ 44,035 Unallocated amounts typically include general corporate expenses not attributable to a reportable segment. For the Three Months Ended June 30, For the Nine Months Ended June 30, DEPRECIATION and AMORTIZATION 2020 2019 2020 2019 Segment: Consumer and Professional Products $ 8,197 $ 8,158 $ 24,650 $ 24,148 Home and Building Products 4,507 4,626 13,975 13,683 Defense Electronics 2,666 2,669 7,986 7,926 Total segment depreciation and amortization 15,370 15,453 46,611 45,757 Corporate 153 142 456 415 Total consolidated depreciation and amortization $ 15,523 $ 15,595 $ 47,067 $ 46,172 CAPITAL EXPENDITURES Segment: Consumer and Professional Products $ 7,029 $ 3,187 $ 14,561 $ 11,327 Home and Building Products 3,640 5,088 15,135 10,423 Defense Electronics 1,538 2,064 4,748 5,797 Total segment 12,207 10,339 34,444 27,547 Corporate 25 37 307 247 Total consolidated capital expenditures $ 12,232 $ 10,376 $ 34,751 $ 27,794 ASSETS At June 30, 2020 At September 30, 2019 Segment assets: Consumer and Professional Products $ 1,269,540 $ 1,070,510 Home and Building Products 592,038 571,216 Defense Electronics 335,262 347,575 Total segment assets 2,196,840 1,989,301 Corporate 105,343 82,429 Total continuing assets 2,302,183 2,071,730 Assets of discontinued operations 8,037 3,209 Consolidated total $ 2,310,220 $ 2,074,939

EMPLOYEE BENEFIT PLANS

EMPLOYEE BENEFIT PLANS	9 Months Ended
	Jun. 30, 2020
Retirement Benefits [Abstract]
EMPLOYEE BENEFIT PLANS	EMPLOYEE BENEFIT PLANS Defined benefit pension expense (income) included in Other Income (Expense), net was as follows: Three Months Ended June 30, Nine Months Ended June 30, 2020 2019 2020 2019 Interest cost $ 1,148 $ 1,570 $ 3,450 $ 4,711 Expected return on plan assets (2,585 ) (2,583 ) (7,757 ) (7,749 ) Amortization: Prior service cost 3 4 11 11 Recognized actuarial loss 1,042 222 3,126 666 Net periodic expense (income) $ (392 ) $ (787 ) $ (1,170 ) $ (2,361 )

RECENT ACCOUNTING PRONOUNCEMENT

RECENT ACCOUNTING PRONOUNCEMENTS	9 Months Ended
	Jun. 30, 2020
Accounting Changes and Error Corrections [Abstract]
RECENT ACCOUNTING PRONOUNCEMENTS	RECENT ACCOUNTING PRONOUNCEMENTS New Accounting Standards Implemented In March 2020, the Financial Accounting Standards Board ("FASB") issued optional guidance for a limited time relating to accounting for the discontinuation of the LIBOR rate also known as reference rate reform. The amendments in this update provide optional practical expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships and other transactions affected by reference rate reform if certain criteria are met. The amendments in this update are applicable to contract modifications that replace a reference LIBOR rate beginning on March 12, 2020 through December 31, 2022. The optional expedients primarily apply to the Griffon’s Credit Agreement and Non-U.S. Term Loans. The optional expedients allow the Company to account for modifications due to reference rate reform by prospectively adjusting the effective interest rate on these agreements. The Company expects to apply the optional practical expedients and exceptions to modifications of its agreements affected by reference rate reform. As of June 30, 2020, the Company has not modified its agreements subject to reference rate reform. In February 2016, FASB issued guidance on lease accounting requiring lessees to recognize a right-of-use asset and a lease liability for long-term leases and to disclose additional quantitative and qualitative information about leasing arrangements. During 2019, the Company developed a project plan to guide the implementation of this guidance. The Company completed this plan including surveying the Company’s businesses, assessing the Company’s portfolio of leases and compiling a central repository of active leases. The Company also implemented a lease accounting software solution to support the new reporting requirements and established a future lease process to keep the lease accounting portfolio up to date. The Company evaluated key policy elections and considerations under the standard and completed an internal policy as well as training to address the new standard requirements. The Company has elected the package of practical expedients and will not apply the recognition requirements to short-term leases. The Company adopted the requirements of the new standard as of October 1, 2019 and applied the modified retrospective approach, whereby the cumulative effect of adoption is recognized as of the date of adoption and comparative prior periods are not retrospectively adjusted. As a result, upon adoption, we have recognized right-of-use assets of $163,552 and lease liabilities of $163,676 associated with our operating leases. The standard had no material impact to retained earnings or on our Condensed Consolidated Statements of Income or Condensed Consolidated Statements of Cash Flows. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) which supersedes nearly all existing revenue recognition guidance. Subsequent to the issuance of Topic 606, the FASB clarified the guidance through several ASUs; hereinafter the collection of revenue guidance is referred to as “ASC 606”. The core principle of ASC 606 is that revenue should be recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. On October 1, 2018, the Company adopted ASC 606 using the modified retrospective method for all contracts. Results for reporting periods beginning October 1, 2018 are presented under ASC 606, while prior period amounts were not adjusted and continue to be reported in accordance with the Company’s historic accounting under Topic 605, Revenue Recognition. Under the modified retrospective method, the Company recognized the cumulative effect of initially applying this accounting standard as an adjustment to the opening balance in retained earnings of approximately $5,673 as of October 1, 2018. The impact to beginning retained earnings primarily related to certain contracts in the Defense Electronics Segment containing provisions for radar and communication products that have an alternative use and/or no right to payment. The adoption of ASC 606 did not have a material impact on the Company’s Consolidated Condensed Financial Statements as of and for the year ended September 30, 2019. See Note 2 - Revenue for additional disclosures required by ASC 606. In February 2018, the FASB issued guidance that allows companies to reclassify stranded tax effects resulting from the 2017 Tax Cuts and Jobs Act, from accumulated other comprehensive income to retained earnings. This guidance is effective for all entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years, with early adoption permitted, and is effective for the Company in fiscal 2020. Upon adoption of this guidance as of October 1, 2019, based on our evaluation, we elected not to reclassify the income tax effects of the Tax Cuts and Jobs Act from accumulated other comprehensive income to retained earnings. The adoption of this standard did not have an impact on the Company's financial condition, results of operations, or cash flow. Issued but not yet effective accounting pronouncements In December 2019, the FASB issued guidance on simplifying the accounting for income taxes by clarifying and amending existing guidance related to the recognition of franchise tax, the evaluation of a step up in the tax basis of goodwill, and the effects of enacted changes in tax laws or rates in the effective tax rate computation, among other clarifications. Our effective date for adoption of this ASU is our fiscal year beginning October 1, 2021 with early adoption permitted. We are currently evaluating the effects that the adoption of this guidance will have on our consolidated financial statements and the related disclosures. In April 2019, the FASB issued guidance relating to accounting for credit losses on financial instruments, including trade receivables and derivatives and hedging. This guidance is effective for all entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years, with early adoption permitted, and will be effective for the Company beginning in fiscal year 2021. We do not expect the adoption of this guidance to have a material effect on our consolidated financial statements and the related disclosures. In August 2018, the FASB issued guidance which modifies the disclosures on fair value measurements by removing the requirement to disclose the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy and the policy for timing of such transfers. This guidance expands the disclosure requirements for Level 3 fair value measurements, primarily focused on changes in unrealized gains and losses included in other comprehensive income (loss). This guidance is effective for fiscal years beginning after December 15, 2019, with early adoption permitted, and will be effective for the Company beginning in fiscal year 2021. We are currently evaluating the effects that the adoption of this guidance will have on our consolidated financial statements and the related disclosures. In August 2018, the FASB issued guidance to clarify disclosure requirements related to defined benefit pension and other post-retirement plans. The guidance is effective for fiscal years beginning after December 15, 2020, with early adoption permitted, and will be effective for the Company beginning in 2022. We are currently evaluating the effects that the adoption of this guidance will have on our consolidated financial statements and the related disclosures. In January 2017, the FASB issued guidance that simplifies how an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test. Step 2 measures a goodwill impairment loss by comparing the implied fair value of a reporting unit's goodwill with the carrying amount of that goodwill. This guidance is effective for annual periods beginning after December 15, 2019, including interim periods within those periods and is effective for the Company beginning October 1, 2020. The Company does not expect this guidance to have a material impact on the Company's financial condition, results of operations or related disclosures. The Company has implemented all new accounting pronouncements that are in effect and that may impact its financial statements, and does not believe that there are any other new accounting pronouncements that have been issued that might have a material impact on its financial position or results of operations.

DISCONTINUED OPERATIONS

DISCONTINUED OPERATIONS	9 Months Ended
	Jun. 30, 2020
Discontinued Operations and Disposal Groups [Abstract]
DISCONTINUED OPERATIONS	DISCONTINUED OPERATIONS On November 16, 2017, Griffon announced it entered into a definitive agreement to sell Clopay Plastics Products ("Plastics") and on February 6, 2018, completed the sale to Berry for $465,000 , net of certain post-closing adjustments. During the second quarter of 2019, Griffon recorded an $11,000 charge ( $7,646 , net of tax) to discontinued operations. The charge consisted primarily of a purchase price adjustment to resolve a claim related to the $465,000 Plastics divestiture and included an additional reserve for a legacy environmental matter. During the third quarter of 2019, $9,500 of this charge was paid. In 2008, as a result of the downturn in the residential housing market, Griffon exited substantially all operating activities of its Installation Services segment which sold, installed and serviced garage doors and openers, fireplaces, floor coverings, cabinetry and a range of related building products, primarily for the new residential housing market. Griffon substantially concluded its remaining disposal activities in 2009. Installation Services operating results have been reported as discontinued operations in the Consolidated Statements of Operations and Comprehensive Income (Loss) for all periods presented; Installation Services is excluded from segment reporting. There was no Installation Services revenue or income for the three and nine months ended June 30, 2020 and 2019. In 2017, Griffon recorded $5,700 of reserves in discontinued operations related to historical environmental remediation efforts and to increase the reserve for homeowner association (HOA) claims related to the Clopay Services Corporation discontinued operations in 2008. The following amounts summarize the total assets and liabilities are primarily for the Installation Services and other discontinued activities which have been segregated from Griffon’s continuing operations, and are reported as assets and liabilities of discontinued operations in the Condensed Consolidated Balance Sheets: At June 30, 2020 At September 30, 2019 Assets of discontinued operations: Prepaid and other current assets $ 1,951 $ 321 Other long-term assets 6,086 2,888 Total assets of discontinued operations $ 8,037 $ 3,209 Liabilities of discontinued operations: Accrued liabilities, current $ 3,730 $ 4,333 Other long-term liabilities 6,281 3,331 Total liabilities of discontinued operations $ 10,011 $ 7,664 At June 30, 2020

RESTRUCTURING CHARGES

RESTRUCTURING CHARGES	9 Months Ended
	Jun. 30, 2020
Restructuring and Related Activities [Abstract]
RESTRUCTURING CHARGES	RESTRUCTURING CHARGES In November 2019, Griffon announced the development of a next-generation business platform for CPP to enhance the growth, efficiency, and competitiveness of its U.S. operations. This initiative includes three key development areas. First, multiple independent information systems will be unified into a single data and analytics platform which will serve the whole CPP U.S. enterprise. Second, certain CPP U.S. operations will be consolidated to optimize facilities footprint and talent. Third, strategic investments in automation and facilities expansion will be made to increase the efficiency of our manufacturing and fulfillment operations, and support e-commerce growth. The expected costs to implement this new business platform, over the three-year duration of the project, will include approximately $35,000 of one-time charges and approximately $40,000 in capital investments. The one-time charges are comprised of $16,000 of cash charges, which includes $12,000 personnel-related costs such as training, severance, and duplicate personnel costs and $4,000 of facility and lease exit costs. The remaining $19,000 of charges are non-cash and are primarily related to asset write-downs. In the quarter and nine months ended June 30, 2020, CPP incurred pre-tax restructuring and related exit costs approximating $1,633 and $11,171 , respectively. For the nine month period ended June 30, 2020, cash charges totaled $6,479 and non-cash, asset-related charges totaled $4,692 ; the cash charges included $4,842 for one-time termination benefits and other personnel-related costs and $1,637 for facility exit costs. Non-cash charges included a $1,968 impairment charge related to a facility’s operating lease as well as $671 of leasehold improvements made to the leased facility and $304 of inventory that have no recoverable value, and a $1,749 impairment charge related to machinery and equipment that have no recoverable value at one of the Company's owned manufacturing locations. As a result of these transactions, headcount was reduced by 179 . A summary of the restructuring and other related charges included in Cost of goods and services and Selling, general and administrative expenses in the Company's Condensed Consolidated Statements of Operations were as follows: For the Three Months Ended June 30, 2020 For the Nine Months Ended June 30, 2020 Cost of goods and services $ 20 $ 4,096 Selling, general and administrative expenses 1,613 7,075 Total restructuring charges $ 1,633 $ 11,171 For the Three Months Ended June 30, 2020 For the Nine Months Ended June 30, 2020 Personnel related costs $ 1,050 $ 4,842 Facilities, exit costs and other 583 1,637 Non-cash facility and other — 4,692 Total $ 1,633 $ 11,171 The following table summarizes the accrued liabilities of the Company's restructuring actions: Cash Charges Non-Cash Personnel related costs Facilities & Facility and Other Costs Total Accrued liability at September 30, 2019 $ — $ — $ — $ — Q1 restructuring charges 2,134 140 4,160 6,434 Cash payments (621 ) (140 ) — (761 ) Non-cash charges (1) — — (4,160 ) (4,160 ) Accrued liability at December 31, 2019 $ 1,513 $ — $ — $ 1,513 Q2 restructuring charges 1,658 914 532 3,104 Cash payments (1,041 ) (914 ) — (1,955 ) Non-cash charges (1) — — (532 ) (532 ) Accrued liability at March 31, 2020 $ 2,130 $ — $ — $ 2,130 Q3 restructuring charges 1,050 583 — 1,633 Cash payments (828 ) (380 ) — (1,208 ) Accrued liability at June 30, 2020 $ 2,352 $ 203 $ — $ 2,555 (1) Non-cash charges in Facility and Other Costs primarily represent the non-cash write-off of certain long-lived assets in connection with certain facility closures.

OTHER INCOME (EXPENSE)

OTHER INCOME (EXPENSE)	9 Months Ended
	Jun. 30, 2020
Other Income and Expenses [Abstract]
OTHER INCOME (EXPENSE)	OTHER INCOME (EXPENSE) For the quarters ended June 30, 2020 and 2019 , Other income (expense) includes $72 and $150 , respectively, of net currency exchange gains (losses) in connection with the translation of receivables and payables denominated in currencies other than the functional currencies of Griffon and its subsidiaries, net periodic benefit plan income of $392 and $787 , respectively, as well as $294 and $(14) , respectively, of net investment (loss) income. For the nine months ended June 30, 2020 and 2019, Other income (expense) includes $441 and $535 , respectively, of net currency exchange gains (losses) in connection with the translation of receivables and payables denominated in currencies other than the functional currencies of Griffon and its subsidiaries, net periodic benefit plan income of $1,170 and $2,361 , respectively, as well as $145 and $18 , respectively, of net investment (loss) income. During the nine months ended June 30, 2020, Other income (expense) also includes a one-time contract award of $700

WARRANTY LIABILITY

WARRANTY LIABILITY	9 Months Ended
	Jun. 30, 2020
Product Warranties Disclosures [Abstract]
WARRANTY LIABILITY	WARRANTY LIABILITY DE offers warranties against product defects for periods generally ranging from one to two years, depending on the specific product and terms of the customer purchase agreement. HBP also offers warranties against product defects for periods generally ranging from one to ten years, with limited lifetime warranties on certain door models. Typical warranties require CPP, HBP and DE to repair or replace the defective products during the warranty period at no cost to the customer. At the time revenue is recognized, Griffon records a liability for warranty costs, estimated based on historical experience, and periodically assesses its warranty obligations and adjusts the liability as necessary. CPP offers an express limited warranty for a period of ninety days on all products from the date of original purchase unless otherwise stated on the product or packaging from the date of original purchase. Changes in Griffon’s warranty liability, included in Accrued liabilities, were as follows: Three Months Ended June 30, Nine Months Ended June 30, 2020 2019 2020 2019 Balance, beginning of period $ 7,789 $ 8,011 $ 7,894 $ 8,174 Warranties issued and changes in estimated pre-existing warranties 5,773 3,780 14,000 12,541 Actual warranty costs incurred (3,661 ) (4,063 ) (11,993 ) (12,987 ) Balance, end of period $ 9,901 $ 7,728 $ 9,901 $ 7,728

OTHER COMPREHENSIVE INCOME (LOS

OTHER COMPREHENSIVE INCOME (LOSS)	9 Months Ended
	Jun. 30, 2020
OCI, Net of Tax [Abstract]
OTHER COMPREHENSIVE INCOME (LOSS)	OTHER COMPREHENSIVE INCOME (LOSS) The amounts recognized in other comprehensive income (loss) were as follows: Three Months Ended June 30, 2020 Three Months Ended June 30, 2019 Pre-tax Tax Net of tax Pre-tax Tax Net of tax Foreign currency translation adjustments $ 9,508 $ — $ 9,508 $ (1,092 ) $ — $ (1,092 ) Pension and other defined benefit plans 1,443 (304 ) 1,139 236 (52 ) 184 Cash flow hedges (2,779 ) 834 (1,945 ) (199 ) 72 (127 ) Total other comprehensive income (loss) $ 8,172 $ 530 $ 8,702 $ (1,055 ) $ 20 $ (1,035 ) Nine Months Ended June 30, 2020 Nine Months Ended June 31, 2019 Pre-tax Tax Net of tax Pre-tax Tax Net of tax Foreign currency translation adjustments $ (493 ) $ — $ (493 ) $ (3,943 ) $ — $ (3,943 ) Pension and other defined benefit plans 3,137 (657 ) 2,480 708 (156 ) 552 Cash flow hedges (1,826 ) 548 (1,278 ) (306 ) 92 (214 ) Total other comprehensive income (loss) $ 818 $ (109 ) $ 709 $ (3,541 ) $ (64 ) $ (3,605 ) The components of Accumulated other comprehensive income (loss) are as follows: At June 30, 2020 At September 30, 2019 Foreign currency translation adjustments $ (31,777 ) $ (31,284 ) Pension and other defined benefit plans (32,334 ) (34,814 ) Change in Cash flow hedges (1,096 ) 182 $ (65,207 ) $ (65,916 ) Amounts reclassified from accumulated other comprehensive income (loss) to income were as follows: For the Three Months Ended June 30, For the Nine Months Ended June 30, Gain (Loss) 2020 2019 2020 2019 Pension amortization $ (1,045 ) $ (226 ) $ (3,137 ) $ (677 ) Cash flow hedges 556 663 1,550 1,597 Total gain (loss) $ (489 ) $ 437 (1,587 ) 920 Tax benefit (expense) 102 (92 ) 333 (193 ) Total $ (387 ) $ 345 $ (1,254 ) $ 727

LEASES

LEASES	9 Months Ended
	Jun. 30, 2020
Leases [Abstract]
LEASES	LEASES In February 2016, the FASB issued an Accounting Standards Update (ASU 2016-02) related to the accounting and financial statement presentation for leases. This new guidance requires a lessee to recognize right-of-use ("ROU") assets and lease liabilities on the balance sheet, with an election to exempt leases with a term of twelve months or less. The Company adopted the requirements of the new standard as of October 1, 2019 and applied the modified retrospective approach, whereby the cumulative effect of adoption is recognized as of the date of adoption and comparative prior periods are not retrospectively adjusted. As a result, upon adoption, we have recognized ROU assets of $163,552 and lease liabilities of $163,676 associated with our operating leases. The standard had no material impact to retained earnings or on our Condensed Consolidated Statements of Income or Condensed Consolidated Statements of Cash Flows. The Company determines if an arrangement is a lease at inception. The ROU assets and short and long-term liabilities associated with our Operating leases are shown as separate line items on our Condensed Consolidated Balance Sheets. Finance leases are included in property, plant, and equipment, net, other accrued liabilities, and other non-current liabilities. The Company's finance leases are immaterial. ROU assets, along with any other related long-lived assets, are periodically evaluated for impairment. In connection with the Company's restructuring activities, during the nine months ended June 30, 2020, a $1,968 impairment charge was recorded related to a facility’s operating lease as well as $671 and of leasehold improvements made to the leased facility that have no recoverable value. See Note 16, Restructuring Charges. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. ROU assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments. We use the implicit rate when readily determinable. For leases existing as of October 1, 2019, we have elected to use the remaining lease term as of the adoption date in determining the incremental borrowing rate. Our determination of the lease term may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. The Company has elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allows us to carry forward the historical lease classification. We also elected a practical expedient to determine the reasonably certain lease term. For operating leases, fixed lease payments are recognized as operating lease cost on a straight-line basis over the lease term. For finance leases and impaired operating leases, the ROU asset is depreciated on a straight-line basis over the remaining lease term, along with recognition of interest expense associated with accretion of the lease liability. For leases with a lease term of 12 months or less (a "Short-term" lease), any fixed lease payments are recognized on a straight-line basis over such term, and are not recognized on the Condensed Consolidated Balance Sheets. Variable lease cost for both operating and finance leases, if any, is recognized as incurred. The Company has lease agreements that contain both lease and non-lease components. For real estate leases, we account for lease components together with non-lease components (e.g., common-area maintenance). Components of operating lease costs are as follows: For the Three Months Ended June 30, 2020 For the Nine Months Ended June 30, 2020 Fixed $ 9,909 $ 28,648 Variable (a), (b) 2,032 5,608 Short-term (b) 1,280 4,103 Total* $ 13,221 $ 38,359 (a) Primarily related to common-area maintenance and property taxes. (b) Not recorded on the balance sheet. Supplemental cash flow information were as follows: For the Nine Months ended June 30, 2020 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 32,882 Financing cash flows from finance leases 3,202 Total $ 36,084 Supplemental Condensed Consolidated Balance Sheet information related to leases were as follows: At June 30, 2020 Operating Leases: Right of use assets: Operating right-of-use assets $ 154,955 Lease Liabilities: Current portion of operating lease liabilities $ 29,018 Long-term operating lease liabilities 131,650 Total operating lease liabilities $ 160,668 Finance Leases: Property, plant and equipment, net (1) $ 13,318 Lease Liabilities: Notes payable and current portion of long-term debt $ 3,427 Long-term debt, net 9,725 Total financing lease liabilities $ 13,152 (1) Finance lease assets are recorded net of accumulated depreciation of $1,464 . The aggregate future maturities of lease payments for operating leases and finance leases as of June 30, 2020 are as follows (in thousands): Operating Leases Finance Leases 2020 (a) $ 8,794 $ 1,259 2021 34,624 4,252 2022 29,658 2,673 2023 23,123 2,361 2024 16,904 2,101 2025 14,773 1,382 Thereafter 70,304 — Total lease payments 198,180 14,028 Less: Imputed Interest (37,512 ) (876 ) Present value of lease liabilities $ 160,668 $ 13,152 (a) Excluding the nine months ended June 30, 2020 The aggregate minimum lease payments for operating leases, as calculated prior to the adoption of ASU 2016-02, were as follows: At September 30, 2019 2020 $ 35,176 2021 30,730 2022 26,119 2023 20,008 2024 14,198 Thereafter 78,105 Total $ 204,336 Average lease terms and discount rates were as follows: At June 30, 2020 Weighted-average remaining lease term (years) Operating leases 8.3 Finance Leases 2.3 Weighted-average discount rate Operating Leases 5.17 % Finance Leases 4.36 %
LEASES	LEASES In February 2016, the FASB issued an Accounting Standards Update (ASU 2016-02) related to the accounting and financial statement presentation for leases. This new guidance requires a lessee to recognize right-of-use ("ROU") assets and lease liabilities on the balance sheet, with an election to exempt leases with a term of twelve months or less. The Company adopted the requirements of the new standard as of October 1, 2019 and applied the modified retrospective approach, whereby the cumulative effect of adoption is recognized as of the date of adoption and comparative prior periods are not retrospectively adjusted. As a result, upon adoption, we have recognized ROU assets of $163,552 and lease liabilities of $163,676 associated with our operating leases. The standard had no material impact to retained earnings or on our Condensed Consolidated Statements of Income or Condensed Consolidated Statements of Cash Flows. The Company determines if an arrangement is a lease at inception. The ROU assets and short and long-term liabilities associated with our Operating leases are shown as separate line items on our Condensed Consolidated Balance Sheets. Finance leases are included in property, plant, and equipment, net, other accrued liabilities, and other non-current liabilities. The Company's finance leases are immaterial. ROU assets, along with any other related long-lived assets, are periodically evaluated for impairment. In connection with the Company's restructuring activities, during the nine months ended June 30, 2020, a $1,968 impairment charge was recorded related to a facility’s operating lease as well as $671 and of leasehold improvements made to the leased facility that have no recoverable value. See Note 16, Restructuring Charges. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. ROU assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at the commencement date in determining the present value of lease payments. We use the implicit rate when readily determinable. For leases existing as of October 1, 2019, we have elected to use the remaining lease term as of the adoption date in determining the incremental borrowing rate. Our determination of the lease term may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. The Company has elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allows us to carry forward the historical lease classification. We also elected a practical expedient to determine the reasonably certain lease term. For operating leases, fixed lease payments are recognized as operating lease cost on a straight-line basis over the lease term. For finance leases and impaired operating leases, the ROU asset is depreciated on a straight-line basis over the remaining lease term, along with recognition of interest expense associated with accretion of the lease liability. For leases with a lease term of 12 months or less (a "Short-term" lease), any fixed lease payments are recognized on a straight-line basis over such term, and are not recognized on the Condensed Consolidated Balance Sheets. Variable lease cost for both operating and finance leases, if any, is recognized as incurred. The Company has lease agreements that contain both lease and non-lease components. For real estate leases, we account for lease components together with non-lease components (e.g., common-area maintenance). Components of operating lease costs are as follows: For the Three Months Ended June 30, 2020 For the Nine Months Ended June 30, 2020 Fixed $ 9,909 $ 28,648 Variable (a), (b) 2,032 5,608 Short-term (b) 1,280 4,103 Total* $ 13,221 $ 38,359 (a) Primarily related to common-area maintenance and property taxes. (b) Not recorded on the balance sheet. Supplemental cash flow information were as follows: For the Nine Months ended June 30, 2020 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 32,882 Financing cash flows from finance leases 3,202 Total $ 36,084 Supplemental Condensed Consolidated Balance Sheet information related to leases were as follows: At June 30, 2020 Operating Leases: Right of use assets: Operating right-of-use assets $ 154,955 Lease Liabilities: Current portion of operating lease liabilities $ 29,018 Long-term operating lease liabilities 131,650 Total operating lease liabilities $ 160,668 Finance Leases: Property, plant and equipment, net (1) $ 13,318 Lease Liabilities: Notes payable and current portion of long-term debt $ 3,427 Long-term debt, net 9,725 Total financing lease liabilities $ 13,152 (1) Finance lease assets are recorded net of accumulated depreciation of $1,464 . The aggregate future maturities of lease payments for operating leases and finance leases as of June 30, 2020 are as follows (in thousands): Operating Leases Finance Leases 2020 (a) $ 8,794 $ 1,259 2021 34,624 4,252 2022 29,658 2,673 2023 23,123 2,361 2024 16,904 2,101 2025 14,773 1,382 Thereafter 70,304 — Total lease payments 198,180 14,028 Less: Imputed Interest (37,512 ) (876 ) Present value of lease liabilities $ 160,668 $ 13,152 (a) Excluding the nine months ended June 30, 2020 The aggregate minimum lease payments for operating leases, as calculated prior to the adoption of ASU 2016-02, were as follows: At September 30, 2019 2020 $ 35,176 2021 30,730 2022 26,119 2023 20,008 2024 14,198 Thereafter 78,105 Total $ 204,336 Average lease terms and discount rates were as follows: At June 30, 2020 Weighted-average remaining lease term (years) Operating leases 8.3 Finance Leases 2.3 Weighted-average discount rate Operating Leases 5.17 % Finance Leases 4.36 %

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	9 Months Ended
	Jun. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Legal and environmental Peekskill Site. Lightron Corporation (“Lightron”), a wholly-owned subsidiary of Griffon, once conducted operations at a location in Peekskill in the Town of Cortlandt, New York (the “Peekskill Site”) owned by ISC Properties, Inc. (“ISCP”), a wholly-owned subsidiary of Griffon. ISCP sold the Peekskill Site in November 1982. Subsequently, ISCP was advised by the Department of Environmental Conservation of New York State ("DEC") that random sampling at the Peekskill Site and in a creek near the Peekskill Site indicated concentrations of solvents and other chemicals common to Lightron’s prior plating operations. In 1996, ISCP entered into a consent order with the DEC (the “Consent Order”), pursuant to which ISCP was required to perform a remedial investigation and prepare a feasibility study (the “Feasibility Study”). After completing the initial remedial investigation, ISCP conducted, over the next several years, supplemental remedial investigations, including soil vapor investigations, as required by the Consent Order. In April 2009, the DEC advised ISCP that both the DEC and the New York State Department of Health had reviewed and accepted an August 2007 Remedial Investigation Report and an Additional Data Collection Summary Report dated January 30, 2009. ISCP submitted to the DEC a draft Feasibility Study which was accepted and approved by the DEC in February 2011. ISCP satisfied its obligations under the Consent Order when DEC approved the Remedial Investigation and Feasibility Study for the Peekskill Site. In June, 2011 the DEC issued a Remedial Action Plan for the Peekskill Site that set forth the specific remedies selected and responded to public comments. The approximate cost of the remedy proposed by DEC in its Remedial Action Plan was approximately $10,000 . Following issuance of the Remedial Action Plan, the DEC implemented a portion of its plan, and also performed additional investigation for the presence of metals in soils and sediments downstream from the Peekskill Site. During this investigation chromium was found to be present in sediments further downstream of the Peekskill site than previously detected. In August 2018, the DEC sent a letter to the United States Environmental Protection Agency (the “EPA”), in which the DEC requested that the Peekskill Site be nominated by the EPA for inclusion on the National Priorities List (the “NPL”). Based on DEC’s request and on an analysis by a consultant retained by the EPA, on May 15, 2019 the EPA added the Peekskill Site to the NPL under the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA) and is now performing a Remedial Investigation/Feasibility Study. The EPA estimates that it will select a remedy in 2022. It is uncertain what subsequent action the EPA will take. The EPA may, on its own or through the use of consultants, perform further studies of the site and/or subsequently remediate the site, and in such event, would likely seek reimbursement for the costs incurred from potentially responsible parties (“PRPs”). Alternatively, the EPA could enter into negotiations with the PRPs to request that the PRPs perform further studies and/or remediate the site. Griffon does not acknowledge any responsibility to perform any remediation at the Peekskill Site. Improper Advertisement Claim involving Union Tools ® Products. Beginning in December 2004, a customer of AMES had been named in various litigation matters relating to certain Union Tools products. The plaintiffs in those litigation matters asserted causes of action against the customer of AMES for improper advertisement to end consumers. The allegations suggested that advertisements led the consumers to believe that Union Tools’ hand tools were wholly manufactured within boundaries of the United States. The complaints asserted various causes of action against the customer of AMES under federal and state law, including common law fraud. At some point, the customer may seek indemnity (including recovery of its legal fees and costs) against AMES for an unspecified amount. Presently, AMES cannot estimate the amount of loss, if any, if the customer were to seek legal recourse against AMES. Union Fork and Hoe, Frankfort, NY site. The former Union Fork and Hoe property in Frankfort, NY was acquired by AMES in 2006 as part of a larger acquisition, and has historic site contamination involving chlorinated solvents, petroleum hydrocarbons and metals. AMES has entered into an Order on Consent with the New York State Department of Environmental Conservation. While the Order is without admission or finding of liability or acknowledgment that there has been a release of hazardous substances at the site, AMES is required to perform a remedial investigation of certain portions of the property and to recommend a remediation option. In 2018, Ames submitted a Feasibility Study recommending excavation of shallow soils for lead, arsenic and hydrocarbons in addition to deeper excavation for lead. DEC approved the selection of this remedy in 2019 by issuing a Record of Decision. Remediation activities to satisfy the Record of Decision were completed in June 2020. The DEC has requested investigation of one additional on-site area and Ames has submitted a workplan to satisfy this request. The DEC has also requested that Ames develop and implement a workplan to assess certain off-site areas adjoining the boundaries of the site, which Ames expects to submit in August 2020. AMES has a number of defenses to liability in this matter, including its rights under a previous Consent Judgment entered into between the DEC and a predecessor of AMES relating to the site. Ames’ insurer has accepted Ames’ claim for a substantial portion of the costs incurred and to be incurred with respect to both the on-site and off-site activities. U.S. Government investigations and claims Defense contracts and subcontracts, including Griffon’s contracts and subcontracts, are subject to audit and review by various agencies and instrumentalities of the United States government, including among others, the Defense Contract Audit Agency, the Defense Criminal Investigative Service, and the Department of Justice which has responsibility for asserting claims on behalf of the U.S. Government. In general, departments and agencies of the U.S. Government have the authority to investigate various transactions and operations of Griffon, and the results of such investigations may lead to administrative, civil or criminal proceedings, the ultimate outcome of which could be fines, penalties, repayments or compensatory or treble damages. U.S. Government regulations provide that certain findings against a contractor may lead to suspension or debarment from future U.S. Government contracts or the loss of export privileges for a company or an operating division or subdivision. Suspension or debarment could have a material adverse effect on Telephonics because of its reliance on government contracts. General legal Griffon is subject to various laws and regulations relating to the protection of the environment and is a party to legal proceedings arising in the ordinary course of business. Management believes, based on facts presently known to it, that the resolution of the matters above and such other matters will not have a material adverse effect on Griffon’s consolidated financial position, results of operations or cash flows.

CONSOLIDATING GUARANTOR AND NON

CONSOLIDATING GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION	9 Months Ended
	Jun. 30, 2020
Consolidating Guarantor And Non Guarantor Financial Information [Abstract]
CONSOLIDATING GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION	CONSOLIDATING GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION Griffon’s Senior Notes are fully and unconditionally guaranteed, jointly and severally by Clopay Corporation, Telephonics Corporation, The AMES Companies, Inc., ATT Southern LLC, Clopay Ames Holding Corp., ClosetMaid LLC, CornellCookson, LLC and Cornell Real Estate Holdings, LLC, all of which are indirectly 100% owned by Griffon. In accordance with Rule 3-10 of Regulation S-X promulgated under the Securities Act, presented below are condensed consolidating financial information as of June 30, 2020 and September 30, 2019 and for the three and nine months ended June 30, 2020 and 2019 . The financial information may not necessarily be indicative of the results of operations or financial position of the guarantor companies or non-guarantor companies had they operated as independent entities. The guarantor companies and the non-guarantor companies include the consolidated financial results of their wholly-owned subsidiaries accounted for under the equity method. The indentures relating to the Senior Notes (the “Indentures”) contain terms providing that, under certain limited circumstances, a guarantor will be released from its obligations to guarantee the Senior Notes. These circumstances include (i) a sale of at least a majority of the stock, or all or substantially all the assets, of the subsidiary guarantor as permitted by the Indentures; (ii) a public equity offering of a subsidiary guarantor that qualifies as a “Minority Business” as defined in the Indentures (generally, a business the EBITDA of which constitutes less than 50% CONDENSED CONSOLIDATING BALANCE SHEETS At June 30, 2020 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation CURRENT ASSETS Cash and equivalents $ 4,727 $ 19,697 $ 47,575 $ — $ 71,999 Accounts receivable, net of allowances — 307,625 217,590 (165,751 ) 359,464 Contract costs and recognized income not yet billed, net of progress payments — 89,526 2,617 — 92,143 Inventories, net — 347,703 63,903 (578 ) 411,028 Prepaid and other current assets 19,519 24,144 5,068 2,634 51,365 Assets of discontinued operations — — 1,951 — 1,951 Total Current Assets 24,246 788,695 338,704 (163,695 ) 987,950 PROPERTY, PLANT AND EQUIPMENT, net 1,232 289,224 44,862 — 335,318 OPERATING LEASE RIGHT-OF-USE ASSETS 9,633 124,566 20,756 — 154,955 GOODWILL — 375,734 63,933 — 439,667 INTANGIBLE ASSETS, net 93 219,056 135,235 — 354,384 INTERCOMPANY RECEIVABLE 16,555 679,666 84,671 (780,892 ) — EQUITY INVESTMENTS IN SUBSIDIARIES 1,702,746 766,863 3,154,553 (5,624,162 ) — OTHER ASSETS 12,228 39,491 (5,638 ) (14,221 ) 31,860 ASSETS OF DISCONTINUED OPERATIONS — — 6,086 — 6,086 Total Assets $ 1,766,733 $ 3,283,295 $ 3,843,162 $ (6,582,970 ) $ 2,310,220 CURRENT LIABILITIES Notes payable and current portion of long-term debt $ — $ 2,973 $ 6,262 $ — $ 9,235 Accounts payable and accrued liabilities 58,619 426,260 72,451 (163,142 ) 394,188 Current portion of operating lease liabilities 1,842 22,229 4,947 — 29,018 Liabilities of discontinued operations — — 3,730 — 3,730 Total Current Liabilities 60,461 451,462 87,390 (163,142 ) 436,171 LONG-TERM DEBT, net 1,087,135 10,258 25,972 — 1,123,365 LONG-TERM OPERATING LEASE LIABILITIES 8,886 106,552 16,212 — 131,650 INTERCOMPANY PAYABLES 77,139 254,479 467,463 (799,081 ) — OTHER LIABILITIES 24,657 77,228 10,242 (7,829 ) 104,298 LIABILITIES OF DISCONTINUED OPERATIONS — — 6,281 — 6,281 Total Liabilities 1,258,278 899,979 613,560 (970,052 ) 1,801,765 SHAREHOLDERS’ EQUITY 508,455 2,383,316 3,229,602 (5,612,918 ) 508,455 Total Liabilities and Shareholders’ Equity $ 1,766,733 $ 3,283,295 $ 3,843,162 $ (6,582,970 ) $ 2,310,220 CONDENSED CONSOLIDATING BALANCE SHEETS At September 30, 2019 ($ in thousands) Parent Guarantor Non-Guarantor Elimination Consolidation CURRENT ASSETS Cash and equivalents $ 1,649 $ 25,217 $ 45,511 $ — $ 72,377 Accounts receivable, net of allowances — 227,069 38,580 (1,199 ) 264,450 Contract costs and recognized income not yet billed, net of progress payments — 104,109 1,002 — 105,111 Inventories, net — 372,839 69,540 (258 ) 442,121 Prepaid and other current assets 8,238 25,754 6,951 (144 ) 40,799 Assets of discontinued operations — — 321 — 321 Total Current Assets 9,887 754,988 161,905 (1,601 ) 925,179 PROPERTY, PLANT AND EQUIPMENT, net 1,184 289,282 46,860 — 337,326 GOODWILL — 375,734 61,333 — 437,067 INTANGIBLE ASSETS, net 93 224,275 132,271 — 356,639 INTERCOMPANY RECEIVABLE 5,834 864,884 75,684 (946,402 ) — EQUITY INVESTMENTS IN SUBSIDIARIES 1,628,031 581,438 3,233,038 (5,442,507 ) — OTHER ASSETS 8,182 24,635 (2,352 ) (14,625 ) 15,840 ASSETS OF DISCONTINUED OPERATIONS — — 2,888 — 2,888 Total Assets $ 1,653,211 $ 3,115,236 $ 3,711,627 $ (6,405,135 ) $ 2,074,939 CURRENT LIABILITIES Notes payable and current portion of long-term debt $ — $ 3,075 $ 7,450 $ — $ 10,525 Accounts payable and accrued liabilities 41,796 266,411 68,390 (1,356 ) 375,241 Liabilities of discontinued operations — — 4,333 — 4,333 Total Current Liabilities 41,796 269,486 80,173 (1,356 ) 390,099 LONG-TERM DEBT, net 1,040,449 3,119 50,181 — 1,093,749 INTERCOMPANY PAYABLES 71,634 457,265 444,557 (973,456 ) — OTHER LIABILITIES 21,569 81,582 15,017 (8,171 ) 109,997 LIABILITIES OF DISCONTINUED OPERATIONS — — 3,331 — 3,331 Total Liabilities 1,175,448 811,452 593,259 (982,983 ) 1,597,176 SHAREHOLDERS’ EQUITY 477,763 2,303,784 3,118,368 (5,422,152 ) 477,763 Total Liabilities and Shareholders’ Equity $ 1,653,211 $ 3,115,236 $ 3,711,627 $ (6,405,135 ) $ 2,074,939 CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) For the Three Months Ended June 30, 2020 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation Revenue $ — $ 515,083 $ 126,847 $ (9,869 ) $ 632,061 Cost of goods and services — 385,717 91,541 (10,200 ) 467,058 Gross profit — 129,366 35,306 331 165,003 Selling, general and administrative expenses 5,229 85,512 22,913 (145 ) 113,509 Income (loss) from operations (5,229 ) 43,854 12,393 476 51,494 Other income (expense) Interest income (expense), net (7,013 ) (9,537 ) (35 ) — (16,585 ) Loss from debt extinguishment, net (1,235 ) — — — (1,235 ) Other, net 126 (2,852 ) 4,004 (472 ) 806 Total other income (expense) (8,122 ) (12,389 ) 3,969 (472 ) (17,014 ) Income (loss) before taxes (13,351 ) 31,465 16,362 4 34,480 Provision (benefit) for income taxes (3,533 ) 10,843 5,335 4 12,649 Income (loss) before equity in net income of subsidiaries (9,818 ) 20,622 11,027 — 21,831 Equity in net income (loss) of subsidiaries 31,649 10,920 20,622 (63,191 ) — Net Income (loss) $ 21,831 $ 31,542 $ 31,649 $ (63,191 ) $ 21,831 Comprehensive income (loss) $ 30,533 $ 36,940 $ 26,251 $ (63,191 ) $ 30,533 CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) For the Three Months Ended June 30, 2019 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation Revenue $ — $ 470,228 $ 118,694 $ (13,952 ) $ 574,970 Cost of goods and services — 350,197 84,568 (14,278 ) 420,487 Gross profit — 120,031 34,126 326 154,483 Selling, general and administrative expenses 5,342 85,885 27,252 (490 ) 117,989 Income (loss) from operations (5,342 ) 34,146 6,874 816 36,494 Other income (expense) Interest income (expense), net (7,171 ) (9,048 ) (868 ) — (17,087 ) Other, net 4,963 (15,918 ) 12,762 (828 ) 979 Total other income (expense) (2,208 ) (24,966 ) 11,894 (828 ) (16,108 ) Income (loss) before taxes (7,550 ) 9,180 18,768 (12 ) 20,386 Provision (benefit) for income taxes (4,815 ) 9,124 1,961 (12 ) 6,258 Income (loss) before equity in net income of subsidiaries (2,735 ) 56 16,807 — 14,128 Equity in net income (loss) of subsidiaries 16,330 15,641 56 (32,027 ) — Income (loss) from continuing operations 13,595 15,697 16,863 (32,027 ) 14,128 Income (loss) from operation of discontinued businesses — — — — — Provision (benefit) from income taxes — — 533 — 533 Income (loss) from discontinued operations — — (533 ) — (533 ) Net Income (loss) $ 13,595 $ 15,697 $ 16,330 $ (32,027 ) $ 13,595 Comprehensive income (loss) $ 12,560 $ (597 ) $ 32,624 $ (32,027 ) $ 12,560 CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) For the Nine Months Ended June 30, 2020 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation Revenue $ — $ 1,418,975 $ 357,812 $ (29,938 ) $ 1,746,849 Cost of goods and services — 1,058,556 252,331 (30,994 ) 1,279,893 Gross profit — 360,419 105,481 1,056 466,956 Selling, general and administrative expenses 19,169 264,698 74,237 (330 ) 357,774 Income (loss) from operations (19,169 ) 95,721 31,244 1,386 109,182 Other income (expense) Interest income (expense), net (20,217 ) (28,916 ) 37 — (49,096 ) Loss from debt extinguishment, net (7,925 ) — — — (7,925 ) Other, net (389 ) (6,870 ) 10,844 (1,386 ) 2,199 Total other income (expense) (28,531 ) (35,786 ) 10,881 (1,386 ) (54,822 ) Income (loss) before taxes (47,700 ) 59,935 42,125 — 54,360 Provision (benefit) for income taxes (17,355 ) 22,648 15,729 — 21,022 Income (loss) before equity in net income of subsidiaries (30,345 ) 37,287 26,396 — 33,338 Equity in net income (loss) of subsidiaries 63,683 26,457 37,287 (127,427 ) — Net income (loss) $ 33,338 $ 63,744 $ 63,683 $ (127,427 ) $ 33,338 Comprehensive income (loss) $ 34,047 $ 63,744 $ 63,683 $ (127,427 ) $ 34,047 CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) For the Nine Months Ended June 30, 2019 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation Revenue $ — $ 1,352,211 $ 311,219 $ (28,305 ) $ 1,635,125 Cost of goods and services — 1,013,676 215,786 (29,370 ) 1,200,092 Gross profit — 338,535 95,433 1,065 435,033 Selling, general and administrative expenses 15,651 255,674 72,478 (277 ) 343,526 Income (loss) from operations (15,651 ) 82,861 22,955 1,342 91,507 Other income (expense) Interest income (expense), net (20,806 ) (27,306 ) (2,611 ) — (50,723 ) Other, net 4,228 (14,102 ) 14,479 (1,354 ) 3,251 Total other income (expense) (16,578 ) (41,408 ) 11,868 (1,354 ) (47,472 ) Income (loss) before taxes (32,229 ) 41,453 34,823 (12 ) 44,035 Provision (benefit) for income taxes (12,592 ) 20,390 6,878 (12 ) 14,664 Income (loss) before equity in net income of subsidiaries (19,637 ) 21,063 27,945 — 29,371 Equity in net income (loss) of subsidiaries 40,829 33,337 21,063 (95,229 ) — Income (loss) from continuing operations $ 21,192 $ 54,400 $ 49,008 $ (95,229 ) $ 29,371 Income (loss) from operations of discontinued businesses — — (11,000 ) — (11,000 ) Provision (benefit) from income taxes — — (2,821 ) — (2,821 ) Income (loss) from discontinued operations — — (8,179 ) — (8,179 ) Net income (loss) $ 21,192 $ 54,400 $ 40,829 $ (95,229 ) $ 21,192 Comprehensive income (loss) $ 17,587 $ 58,450 $ 36,779 $ (95,229 ) $ 17,587 CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Nine Months Ended June 30, 2020 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation CASH FLOWS FROM OPERATING ACTIVITIES: Net income (loss) $ 33,338 $ 63,744 $ 63,683 $ (127,427 ) $ 33,338 Net cash provided by (used in) operating activities: (10,683 ) 35,520 31,107 — 55,944 CASH FLOWS FROM INVESTING ACTIVITIES: Acquisition of property, plant and equipment (306 ) (30,497 ) (3,948 ) — (34,751 ) Acquired businesses, net of cash acquired — — (10,531 ) — (10,531 ) Investment purchases (130 ) — — — (130 ) Proceeds from sale of assets — 341 (2 ) — 339 Net cash provided by (used in) investing activities (436 ) (30,156 ) (14,481 ) — (45,073 ) CASH FLOWS FROM FINANCING ACTIVITIES: Purchase of shares for treasury (7,479 ) — — — (7,479 ) Proceeds from long-term debt 1,224,722 — 5,896 — 1,230,618 Payments of long-term debt (1,171,365 ) (2,647 ) (31,219 ) — (1,205,231 ) Financing costs (16,543 ) — — — (16,543 ) Dividends paid (10,639 ) — — — (10,639 ) Other, net (4,499 ) (7,723 ) 12,191 — (31 ) Net cash provided by (used in) financing activities 14,197 (10,370 ) (13,132 ) — (9,305 ) CASH FLOWS FROM DISCONTINUED OPERATIONS: Net cash provided by (used) in discontinued operations — — (2,481 ) — (2,481 ) Effect of exchange rate changes on cash and equivalents — (514 ) 1,051 — 537 NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS 3,078 (5,520 ) 2,064 — (378 ) CASH AND EQUIVALENTS AT BEGINNING OF PERIOD 1,649 25,217 45,511 — 72,377 CASH AND EQUIVALENTS AT END OF PERIOD $ 4,727 $ 19,697 $ 47,575 $ — $ 71,999 CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Nine Months Ended June 30, 2019 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation CASH FLOWS FROM OPERATING ACTIVITIES: Net income (loss) $ 21,192 $ 54,400 $ 40,829 $ (95,229 ) $ 21,192 Net (income) loss from discontinued operations — — 8,179 — 8,179 Net cash provided by (used in) operating activities: (20,805 ) 24,179 11,608 — 14,982 CASH FLOWS FROM INVESTING ACTIVITIES: Acquisition of property, plant and equipment (247 ) (23,221 ) (4,326 ) — (27,794 ) Acquired businesses, net of cash acquired (9,219 ) — — — (9,219 ) Investment purchases (149 ) — — — (149 ) Proceeds from sale of business (9,500 ) — — — (9,500 ) Insurance payments (10,604 ) — — — (10,604 ) Proceeds from sale of assets — 79 25 — 104 Net cash provided by (used in) investing activities (29,719 ) (23,142 ) (4,301 ) — (57,162 ) CASH FLOWS FROM FINANCING ACTIVITIES: Purchase of shares for treasury (1,478 ) — — — (1,478 ) Proceeds from long-term debt 138,541 116 18,143 — 156,800 Payments of long-term debt (75,694 ) (2,605 ) (29,961 ) — (108,260 ) Contingent consideration for acquired businesses — — (1,686 ) — (1,686 ) Financing costs (1,012 ) — — — (1,012 ) Dividends paid (10,262 ) — — — (10,262 ) Other, net (197 ) 5,694 (5,694 ) — (197 ) Net cash provided by (used in) financing activities 49,898 3,205 (19,198 ) — 33,905 CASH FLOWS FROM DISCONTINUED OPERATIONS: Net cash provided by (used in) discontinued operations — — (3,874 ) — (3,874 ) Effect of exchange rate changes on cash and equivalents — (118 ) 621 — 503 NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS (626 ) 4,124 (15,144 ) — (11,646 ) CASH AND EQUIVALENTS AT BEGINNING OF PERIOD 15,976 16,353 37,429 — 69,758 CASH AND EQUIVALENTS AT END OF PERIOD $ 15,350 $ 20,477 $ 22,285 $ — $ 58,112

DESCRIPTION OF BUSINESS AND B_2

DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (Policies)	9 Months Ended
	Jun. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“US GAAP”) for interim financial information, and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, these financial statements do not include all the information and footnotes required by US GAAP for complete financial statements. As such, they should be read together with Griffon’s Annual Report on Form 10-K for the year ended September 30, 2019 , which provides a more complete explanation of Griffon’s accounting policies, financial position, operating results, business, properties and other matters. In the opinion of management, these financial statements reflect all adjustments considered necessary for a fair statement of interim results. Griffon’s CPP operations are seasonal; for this and other reasons, the financial results of the Company for any interim period are not necessarily indicative of the results for the full year. The condensed consolidated balance sheet information at September 30, 2019 was derived from the audited financial statements included in Griffon’s Annual Report on Form 10-K for the year ended September 30, 2019 . The condensed consolidated financial statements include the accounts of Griffon and all subsidiaries. Intercompany accounts and transactions have been eliminated in consolidation. The preparation of financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting periods. These estimates may be adjusted due to changes in economic, industry or customer financial conditions, as well as changes in technology or demand. Significant estimates include allowances for doubtful accounts receivable and returns, net realizable value of inventories, restructuring reserves, valuation of goodwill and intangible assets, percentage of completion method of accounting, pension assumptions, useful lives associated with depreciation and amortization of fixed and intangible assets, warranty reserves, sales incentive accruals, stock based compensation assumptions, income taxes and tax valuation reserves, environmental reserves, legal reserves, insurance reserves and the valuation of assets and liabilities of discontinued operations, acquisition assumptions used and the accompanying disclosures. These estimates are based on management’s best knowledge of current events and actions Griffon may undertake in the future. Actual results may ultimately differ from these estimates. Certain amounts in the prior year have been reclassified to conform to current year presentation.
Fair Value Measurements	The carrying values of cash and equivalents, accounts receivable, accounts and notes payable, and revolving credit and variable interest rate debt approximate fair value due to either the short-term nature of such instruments or the fact that the interest rate of the revolving credit and variable rate debt is based upon current market rates. Applicable accounting guidance establishes a fair value hierarchy requiring the Company to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. A financial instrument’s categorization within the hierarchy is based on the lowest level of input that is significant to the fair value measurement. The accounting guidance establishes three levels of inputs that may be used to measure fair value, as follows: • Level 1 inputs are measured and recorded at fair value based upon quoted prices in active markets for identical assets. • Level 2 inputs include inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices in active markets for similar assets and liabilities, quoted prices for identical or similar assets or liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of assets or liabilities. • Level 3 inputs are unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.
Inventories	Inventories are stated at the lower of cost (first-in, first-out or average) or market.
Recent Accounting Pronouncements	New Accounting Standards Implemented In March 2020, the Financial Accounting Standards Board ("FASB") issued optional guidance for a limited time relating to accounting for the discontinuation of the LIBOR rate also known as reference rate reform. The amendments in this update provide optional practical expedients and exceptions for applying U.S. GAAP to contracts, hedging relationships and other transactions affected by reference rate reform if certain criteria are met. The amendments in this update are applicable to contract modifications that replace a reference LIBOR rate beginning on March 12, 2020 through December 31, 2022. The optional expedients primarily apply to the Griffon’s Credit Agreement and Non-U.S. Term Loans. The optional expedients allow the Company to account for modifications due to reference rate reform by prospectively adjusting the effective interest rate on these agreements. The Company expects to apply the optional practical expedients and exceptions to modifications of its agreements affected by reference rate reform. As of June 30, 2020, the Company has not modified its agreements subject to reference rate reform. In February 2016, FASB issued guidance on lease accounting requiring lessees to recognize a right-of-use asset and a lease liability for long-term leases and to disclose additional quantitative and qualitative information about leasing arrangements. During 2019, the Company developed a project plan to guide the implementation of this guidance. The Company completed this plan including surveying the Company’s businesses, assessing the Company’s portfolio of leases and compiling a central repository of active leases. The Company also implemented a lease accounting software solution to support the new reporting requirements and established a future lease process to keep the lease accounting portfolio up to date. The Company evaluated key policy elections and considerations under the standard and completed an internal policy as well as training to address the new standard requirements. The Company has elected the package of practical expedients and will not apply the recognition requirements to short-term leases. The Company adopted the requirements of the new standard as of October 1, 2019 and applied the modified retrospective approach, whereby the cumulative effect of adoption is recognized as of the date of adoption and comparative prior periods are not retrospectively adjusted. As a result, upon adoption, we have recognized right-of-use assets of $163,552 and lease liabilities of $163,676 associated with our operating leases. The standard had no material impact to retained earnings or on our Condensed Consolidated Statements of Income or Condensed Consolidated Statements of Cash Flows. In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) which supersedes nearly all existing revenue recognition guidance. Subsequent to the issuance of Topic 606, the FASB clarified the guidance through several ASUs; hereinafter the collection of revenue guidance is referred to as “ASC 606”. The core principle of ASC 606 is that revenue should be recognized to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. On October 1, 2018, the Company adopted ASC 606 using the modified retrospective method for all contracts. Results for reporting periods beginning October 1, 2018 are presented under ASC 606, while prior period amounts were not adjusted and continue to be reported in accordance with the Company’s historic accounting under Topic 605, Revenue Recognition. Under the modified retrospective method, the Company recognized the cumulative effect of initially applying this accounting standard as an adjustment to the opening balance in retained earnings of approximately $5,673 as of October 1, 2018. The impact to beginning retained earnings primarily related to certain contracts in the Defense Electronics Segment containing provisions for radar and communication products that have an alternative use and/or no right to payment. The adoption of ASC 606 did not have a material impact on the Company’s Consolidated Condensed Financial Statements as of and for the year ended September 30, 2019. See Note 2 - Revenue for additional disclosures required by ASC 606. In February 2018, the FASB issued guidance that allows companies to reclassify stranded tax effects resulting from the 2017 Tax Cuts and Jobs Act, from accumulated other comprehensive income to retained earnings. This guidance is effective for all entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years, with early adoption permitted, and is effective for the Company in fiscal 2020. Upon adoption of this guidance as of October 1, 2019, based on our evaluation, we elected not to reclassify the income tax effects of the Tax Cuts and Jobs Act from accumulated other comprehensive income to retained earnings. The adoption of this standard did not have an impact on the Company's financial condition, results of operations, or cash flow. Issued but not yet effective accounting pronouncements In December 2019, the FASB issued guidance on simplifying the accounting for income taxes by clarifying and amending existing guidance related to the recognition of franchise tax, the evaluation of a step up in the tax basis of goodwill, and the effects of enacted changes in tax laws or rates in the effective tax rate computation, among other clarifications. Our effective date for adoption of this ASU is our fiscal year beginning October 1, 2021 with early adoption permitted. We are currently evaluating the effects that the adoption of this guidance will have on our consolidated financial statements and the related disclosures. In April 2019, the FASB issued guidance relating to accounting for credit losses on financial instruments, including trade receivables and derivatives and hedging. This guidance is effective for all entities for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years, with early adoption permitted, and will be effective for the Company beginning in fiscal year 2021. We do not expect the adoption of this guidance to have a material effect on our consolidated financial statements and the related disclosures. In August 2018, the FASB issued guidance which modifies the disclosures on fair value measurements by removing the requirement to disclose the amount and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy and the policy for timing of such transfers. This guidance expands the disclosure requirements for Level 3 fair value measurements, primarily focused on changes in unrealized gains and losses included in other comprehensive income (loss). This guidance is effective for fiscal years beginning after December 15, 2019, with early adoption permitted, and will be effective for the Company beginning in fiscal year 2021. We are currently evaluating the effects that the adoption of this guidance will have on our consolidated financial statements and the related disclosures. In August 2018, the FASB issued guidance to clarify disclosure requirements related to defined benefit pension and other post-retirement plans. The guidance is effective for fiscal years beginning after December 15, 2020, with early adoption permitted, and will be effective for the Company beginning in 2022. We are currently evaluating the effects that the adoption of this guidance will have on our consolidated financial statements and the related disclosures. In January 2017, the FASB issued guidance that simplifies how an entity is required to test goodwill for impairment by eliminating Step 2 from the goodwill impairment test. Step 2 measures a goodwill impairment loss by comparing the implied fair value of a reporting unit's goodwill with the carrying amount of that goodwill. This guidance is effective for annual periods beginning after December 15, 2019, including interim periods within those periods and is effective for the Company beginning October 1, 2020. The Company does not expect this guidance to have a material impact on the Company's financial condition, results of operations or related disclosures. The Company has implemented all new accounting pronouncements that are in effect and that may impact its financial statements, and does not believe that there are any other new accounting pronouncements that have been issued that might have a material impact on its financial position or results of operations.

INVENTORIES (Tables)

INVENTORIES (Tables)	9 Months Ended
	Jun. 30, 2020
Inventory Disclosure [Abstract]
Schedule of Inventory	The following table details the components of inventory: At June 30, 2020 At September 30, 2019 Raw materials and supplies $ 131,021 $ 121,791 Work in process 90,343 93,830 Finished goods 189,664 226,500 Total $ 411,028 $ 442,121

PROPERTY, PLANT AND EQUIPMENT (

PROPERTY, PLANT AND EQUIPMENT (Tables)	9 Months Ended
	Jun. 30, 2020
Property, Plant and Equipment [Abstract]
Summary of Property, Plant and Equipment	The following table details the components of property, plant and equipment, net: At June 30, 2020 At September 30, 2019 Land, building and building improvements $ 159,225 $ 133,036 Machinery and equipment 585,298 580,698 Leasehold improvements 51,738 49,808 796,261 763,542 Accumulated depreciation and amortization (460,943 ) (426,216 ) Total $ 335,318 $ 337,326

GOODWILL AND OTHER INTANGIBLES

GOODWILL AND OTHER INTANGIBLES (Tables)	9 Months Ended
	Jun. 30, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Changes in Carrying Value of Goodwill	The following table provides changes in the carrying value of goodwill by segment during the nine months ended June 30, 2020 : At September 30, 2019 Goodwill from acquisitions Other At June 30, 2020 Consumer and Professional Products $ 227,269 $ 3,125 $ (525 ) $ 229,869 Home and Building Products 191,253 — — 191,253 Defense Electronics 18,545 — — 18,545 Total $ 437,067 $ 3,125 $ (525 ) $ 439,667
Summary of Gross Carrying Value and Accumulated Amortization of Intangible Assets	The following table provides the gross carrying value and accumulated amortization for each major class of intangible assets: At June 30, 2020 At September 30, 2019 Gross Carrying Amount Accumulated Amortization Average Life (Years) Gross Carrying Amount Accumulated Amortization Customer relationships & other $ 184,445 $ 64,018 23 $ 183,515 $ 57,783 Technology and patents 19,348 8,075 13 19,167 7,329 Total amortizable intangible assets 203,793 72,093 202,682 65,112 Trademarks 222,684 — 219,069 — Total intangible assets $ 426,477 $ 72,093 $ 421,751 $ 65,112

LONG-TERM DEBT (Tables)

LONG-TERM DEBT (Tables)	9 Months Ended
	Jun. 30, 2020
Debt Disclosure [Abstract]
Summary of Long-Term Debt	At June 30, 2020 At September 30, 2019 Outstanding Balance Original Issuer Premium Capitalized Fees & Expenses Balance Sheet Coupon Interest Rate Outstanding Balance Original Issuer Premium Capitalized Fees & Expenses Balance Sheet Coupon Interest Rate Senior notes due 2028 (a) $ 1,000,000 $ 375 (14,877 ) $ 985,498 5.75 % $ — $ — $ — $ — — % Senior notes due 2022 (a) — — — — 5.25 % 1,000,000 867 (9,175 ) 991,692 5.25 % Revolver due 2025 (b) 104,181 — (2,544 ) 101,637 Variable 50,000 — (1,243 ) 48,757 Variable Capital lease - real estate (d) 11,564 — (36 ) 11,528 5.00 % 4,388 — (55 ) 4,333 5.00 % Non US lines of credit (e) — — (33 ) (33 ) Variable 17,576 — (45 ) 17,531 Variable Non US term loans (e) 30,736 — (172 ) 30,564 Variable 36,977 — (188 ) 36,789 Variable Other long term debt (f) 3,422 — (16 ) 3,406 Variable 5,190 — (18 ) 5,172 Variable Totals 1,149,903 375 (17,678 ) 1,132,600 1,114,131 867 (10,724 ) 1,104,274 less: Current portion (9,235 ) — — (9,235 ) (10,525 ) — — (10,525 ) Long-term debt $ 1,140,668 $ 375 $ (17,678 ) $ 1,123,365 $ 1,103,606 $ 867 $ (10,724 ) $ 1,093,749 (a) On June 22, 2020, Griffon completed the add-on offering through a private placement $150,000 principal amount of its 5.75% senior notes due 2028, at 100.25% of par, to Griffon's previously issued $850,000 principal amount of its 5.75% senior notes due in 2028, at par, completed on February 19, 2020 (collectively, the “Senior Notes”). Proceeds from the Senior Notes were used to redeem the $1,000,000 of 5.25% senior notes due 2022 (the “2022 Senior Notes"). As of June 30, 2020 , outstanding Senior Notes due totaled $1,000,000 ; interest is payable semi-annually on March 1 and September 1. The Senior Notes are senior unsecured obligations of Griffon guaranteed by certain domestic subsidiaries, and subject to certain covenants, limitations and restrictions. On April 22, 2020, Griffon exchanged substantially all of the $850,000 Senior Notes for substantially identical Senior Notes registered under the Securities Act of 1933, as amended (the "Securities Act"), via an exchange offer. Griffon intends to complete an offer to exchange the remaining $150,000 Senior Notes for substantially identical Senior Notes registered under the Securities Act during the fourth quarter of fiscal 2020. The fair value of the 2028 Senior Notes approximated $980,000 on June 30, 2020 based upon quoted market prices (level 1 inputs). In connection with these transactions, Griffon capitalized $15,289 of underwriting fees and other expenses incurred related to the issuance and exchange of the Senior Notes, which will amortize over the term of such terms. Furthermore, all of the obligations associated with the 2022 Senior Notes were discharged. Additionally, Griffon recognized a $7,925 loss on the early extinguishment of debt of the 5.25% $1,000,000 2022 Senior Notes, comprised primarily of the write-off of $6,725 of remaining deferred financing fees, $607 of tender offer net premium expense and $593 of redemption interest expense. (b) On January 30, 2020, Griffon amended its revolving credit facility (as amended, the "Credit Agreement") to increase the maximum borrowing availability from $350,000 to $400,000 and extend its maturity date from March 22, 2021 to March 22, 2025. The amended agreement also modified certain other provisions of the facility. The facility includes a letter of credit sub-facility with a limit of $100,000 (increased from $50,000 ); a multi-currency sub-facility of $200,000 (increased from $100,000 ); and contains a customary accordion feature that permits us to request, subject to each lender's consent, an increase in the maximum aggregate amount that can be borrowed by up to an additional $100,000 (increased from $50,000 ). Borrowings under the Credit Agreement may be repaid and re-borrowed at any time. Interest is payable on borrowings at either a LIBOR or base rate benchmark rate, plus an applicable margin, which adjusts based on financial performance. Current margins are 1.25% for base rate loans and 2.25% for LIBOR loans. The Credit Agreement has certain financial maintenance tests including a maximum total leverage ratio, a maximum senior secured leverage ratio and a minimum interest coverage ratio, as well as customary affirmative and negative covenants, and events of default. The negative covenants place limits on Griffon's ability to, among other things, incur indebtedness, incur liens, and make restricted payments and investments. Borrowings under the Credit Agreement are guaranteed by Griffon’s material domestic subsidiaries and are secured, on a first priority basis, by substantially all domestic assets of the Company and the guarantors, and a pledge of not greater than 65% of the equity interest in Griffon’s material, first-tier foreign subsidiaries. At June 30, 2020 , there were $104,181 of outstanding borrowings under the Credit Agreement; outstanding standby letters of credit were $21,617 ; and $274,202 was available, subject to certain loan covenants, for borrowing at that date. (c) In August 2016 and as amended on June 30, 2017, Griffon’s ESOP entered into a Term Loan with a bank (the "ESOP Agreement"). The Term Loan interest rate was LIBOR plus 3.00% . The Term Loan required quarterly principal payments of $569 with a balloon payment due at maturity. The Term Loan was secured by shares purchased with the proceeds of the loan and with a lien on a specific amount of Griffon assets (which ranked pari passu with the lien granted on such assets under the Credit Agreement) and was guaranteed by Griffon. On March 13, 2019, the ESOP Term Loan was refinanced with an internal loan from Griffon which was funded with cash and a draw under its Credit Agreement. The internal loan interest rate is fixed at 2.91% , matures in June 2033 and requires quarterly payments of principal, currently $635 , and interest. The internal loan is secured by shares purchased with the proceeds of the loan. The amount outstanding on the internal loan at June 30, 2020 was $30,513 . (d) Two Griffon subsidiaries have finance leases outstanding for real estate located in Troy, Ohio and Ocala, Florida. The leases mature in 2021 and 2025 , respectively, and bear interest at fixed rates of approximately 5.0% and 2.9% , respectively. The Troy, Ohio lease is secured by a mortgage on the real estate and is guaranteed by Griffon. The Ocala, Florida lease contains one five -year renewal option. At June 30, 2020 , $11,528 was outstanding, net of issuance costs. (e) In November 2012, Garant G.P. (“Garant”) entered into a CAD 15,000 ( $10,974 as of June 30, 2020 ) revolving credit facility. The facility accrues interest at LIBOR (USD) or the Bankers Acceptance Rate (CDN) plus 1.3% per annum ( 1.46% LIBOR USD and 1.56% Bankers Acceptance Rate CDN as of June 30, 2020 ). The revolving facility matures in October 2022. Garant is required to maintain a certain minimum equity. At June 30, 2020 , there were no borrowings under the revolving credit facility with CAD 15,000 ( $10,974 as of June 30, 2020 ) available for borrowing. In July 2016 and as amended in March 2019, Griffon Australia Holdings Pty Ltd and its Australian subsidiaries (collectively, "Griffon Australia") entered into an AUD 29,625 term loan, AUD 20,000 revolver and AUD 10,000 receivable purchase facility agreement. The term loan requires quarterly principal payments of AUD 1,250 plus interest with a balloon payment of AUD 9,625 due upon maturity in March 2022, and accrues interest at Bank Bill Swap Bid Rate “BBSY” plus 1.95% per annum ( 2.09% at June 30, 2020 ). During the quarter ended June 30, 2020 , the term loan balance was reduced by AUD 5,000 , from AUD 23,375 to AUD 18,375 with proceeds from an AUD 5,000 increase in the commitment of the receivables purchase line from AUD 10,000 to AUD 15,000 . The term loan had an outstanding balance of AUD 17,125 ( $11,761 as of June 30, 2020 ). The revolving facility and receivable purchase facility mature in March 2022, but are renewable upon mutual agreement with the lender. The revolving facility and receivable purchase facility accrue interest at BBSY plus 1.9% and 1.35% , respectively, per annum ( 2.05% and 1.49% , respectively, at June 30, 2020 ). At June 30, 2020 , there were no borrowings under the revolver and the receivable purchase facility. The revolver, receivable purchase facility and the term loan are all secured by substantially all of the assets of Griffon Australia and its subsidiaries. Griffon Australia is required to maintain a certain minimum equity level and is subject to a maximum leverage ratio and a minimum fixed charges cover ratio. In July 2018, the AMES Companies UK Ltd and its subsidiaries (collectively, "AMES UK") entered into a GBP 14,000 term loan, GBP 4,000 mortgage loan and GBP 5,000 revolver. The term loan and mortgage loan require quarterly principal payments of GBP 350 and GBP 83 plus interest, respectively, and have balloon payments due upon maturity, July 2023, of GBP 7,700 and GBP 2,500 , respectively. The Term Loan and Mortgage Loans accrue interest at the GBP LIBOR Rate plus 2.25% and 1.8% , respectively ( 2.33% and 1.88% at June 30, 2020 , respectively). The revolving facility matures in June 2021, but is renewable upon mutual agreement with the lender, and accrues interest at the Bank of England Base Rate plus 1.75% ( 1.85% as of June 30, 2020 ). As of June 30, 2020 , the revolver had no outstanding balance while the term and mortgage loan balances amounted to GBP 15,398 ( $18,975 as of June 30, 2020). The revolver and the term loan are both secured by substantially all of the assets of AMES UK and its subsidiaries. AMES UK is subject to a maximum leverage ratio and a minimum fixed charges cover ratio. An invoice discounting arrangement was canceled and replaced by the above loan facilities. (f) Other long-term debt primarily consists of a loan with the Pennsylvania Industrial Development Authority, with the balance consisting of capital leases. At June 30, 2020 , Griffon and its subsidiaries were in compliance with the terms and covenants of all credit and loan agreements.
Summary of Interest Expense Incurred	Three Months Ended June 30, 2020 Three Months Ended June 30, 2019 Effective Interest Rate (1) Cash Interest Amort. Debt Amort. Debt Issuance Costs Total Interest Expense Effective Interest Rate (1) Cash Interest Amort. Debt Amort. Total Interest Expense Senior notes due 2028 (a) 5.8 % $ 12,219 $ — $ 277 $ 12,496 n/a $ — $ — $ — $ — Senior notes due 2022 (a) 6.2 % 1,960 11 155 2,126 5.7 % 13,125 68 950 14,143 Revolver due 2025 (b) Variable 1,597 — 134 1,731 Variable 2,282 — 220 2,502 ESOP Loans (c) n/a — — — — 7.2 % — — — — Capital lease - real estate (d) 6.3 % 33 — 6 39 5.6 % 78 — 7 85 Non US lines of credit (e) Variable 4 — (1 ) 3 Variable 4 — 3 7 Non US term loans (e) Variable 222 — 21 243 Variable 376 — 44 420 Other long term debt (f) Variable 102 — 1 103 Variable 149 — — 149 Capitalized interest (16 ) — — (16 ) (18 ) — — (18 ) Totals $ 16,121 $ 11 $ 593 $ 16,725 $ 15,996 $ 68 $ 1,224 $ 17,288 (1) n/a = not applicable Nine Months Ended June 30, 2020 Nine Months Ended June 30, 2019 Effective Interest Rate (1) Cash Interest Amort. Debt Amort. Debt Issuance Costs Total Interest Expense Effective Interest Rate (1) Cash Interest Amort. Debt Amort. Total Interest Expense Senior notes due 2028 (a) 5.9 % $ 17,785 $ — $ 412 $ 18,197 — % $ — $ — $ — $ — Senior notes due 2022 (a) 5.7 % 23,125 123 1,734 24,982 5.7 % 39,375 202 2,852 42,429 Revolver due 2025 (b) Variable 4,798 — 531 5,329 Variable 4,846 — 761 5,607 ESOP Loans (c) n/a — — — — 6.6 % 937 — 186 1,123 Capital lease - real estate (d) 6.1 % 146 — 19 165 5.5 % 294 — 19 313 Non US lines of credit (e) Variable 11 — 11 22 Variable 15 — 11 26 Non US term loans (e) Variable 786 — 40 826 Variable 1,273 — 97 1,370 Other long term debt (f) Variable 394 — 1 395 Variable 478 — 6 484 Capitalized interest (109 ) — — (109 ) (18 ) — — (18 ) Totals $ 46,936 $ 123 $ 2,748 $ 49,807 $ 47,200 $ 202 $ 3,932 $ 51,334 (a) On June 22, 2020, Griffon completed the add-on offering through a private placement $150,000 principal amount of its 5.75% senior notes due 2028, at 100.25% of par, to Griffon's previously issued $850,000 principal amount of its 5.75% senior notes due in 2028, at par, completed on February 19, 2020 (collectively, the “Senior Notes”). Proceeds from the Senior Notes were used to redeem the $1,000,000 of 5.25% senior notes due 2022 (the “2022 Senior Notes"). As of June 30, 2020 , outstanding Senior Notes due totaled $1,000,000 ; interest is payable semi-annually on March 1 and September 1. The Senior Notes are senior unsecured obligations of Griffon guaranteed by certain domestic subsidiaries, and subject to certain covenants, limitations and restrictions. On April 22, 2020, Griffon exchanged substantially all of the $850,000 Senior Notes for substantially identical Senior Notes registered under the Securities Act of 1933, as amended (the "Securities Act"), via an exchange offer. Griffon intends to complete an offer to exchange the remaining $150,000 Senior Notes for substantially identical Senior Notes registered under the Securities Act during the fourth quarter of fiscal 2020. The fair value of the 2028 Senior Notes approximated $980,000 on June 30, 2020 based upon quoted market prices (level 1 inputs). In connection with these transactions, Griffon capitalized $15,289 of underwriting fees and other expenses incurred related to the issuance and exchange of the Senior Notes, which will amortize over the term of such terms. Furthermore, all of the obligations associated with the 2022 Senior Notes were discharged. Additionally, Griffon recognized a $7,925 loss on the early extinguishment of debt of the 5.25% $1,000,000 2022 Senior Notes, comprised primarily of the write-off of $6,725 of remaining deferred financing fees, $607 of tender offer net premium expense and $593 of redemption interest expense. (b) On January 30, 2020, Griffon amended its revolving credit facility (as amended, the "Credit Agreement") to increase the maximum borrowing availability from $350,000 to $400,000 and extend its maturity date from March 22, 2021 to March 22, 2025. The amended agreement also modified certain other provisions of the facility. The facility includes a letter of credit sub-facility with a limit of $100,000 (increased from $50,000 ); a multi-currency sub-facility of $200,000 (increased from $100,000 ); and contains a customary accordion feature that permits us to request, subject to each lender's consent, an increase in the maximum aggregate amount that can be borrowed by up to an additional $100,000 (increased from $50,000 ). Borrowings under the Credit Agreement may be repaid and re-borrowed at any time. Interest is payable on borrowings at either a LIBOR or base rate benchmark rate, plus an applicable margin, which adjusts based on financial performance. Current margins are 1.25% for base rate loans and 2.25% for LIBOR loans. The Credit Agreement has certain financial maintenance tests including a maximum total leverage ratio, a maximum senior secured leverage ratio and a minimum interest coverage ratio, as well as customary affirmative and negative covenants, and events of default. The negative covenants place limits on Griffon's ability to, among other things, incur indebtedness, incur liens, and make restricted payments and investments. Borrowings under the Credit Agreement are guaranteed by Griffon’s material domestic subsidiaries and are secured, on a first priority basis, by substantially all domestic assets of the Company and the guarantors, and a pledge of not greater than 65% of the equity interest in Griffon’s material, first-tier foreign subsidiaries. At June 30, 2020 , there were $104,181 of outstanding borrowings under the Credit Agreement; outstanding standby letters of credit were $21,617 ; and $274,202 was available, subject to certain loan covenants, for borrowing at that date. (c) In August 2016 and as amended on June 30, 2017, Griffon’s ESOP entered into a Term Loan with a bank (the "ESOP Agreement"). The Term Loan interest rate was LIBOR plus 3.00% . The Term Loan required quarterly principal payments of $569 with a balloon payment due at maturity. The Term Loan was secured by shares purchased with the proceeds of the loan and with a lien on a specific amount of Griffon assets (which ranked pari passu with the lien granted on such assets under the Credit Agreement) and was guaranteed by Griffon. On March 13, 2019, the ESOP Term Loan was refinanced with an internal loan from Griffon which was funded with cash and a draw under its Credit Agreement. The internal loan interest rate is fixed at 2.91% , matures in June 2033 and requires quarterly payments of principal, currently $635 , and interest. The internal loan is secured by shares purchased with the proceeds of the loan. The amount outstanding on the internal loan at June 30, 2020 was $30,513 . (d) Two Griffon subsidiaries have finance leases outstanding for real estate located in Troy, Ohio and Ocala, Florida. The leases mature in 2021 and 2025 , respectively, and bear interest at fixed rates of approximately 5.0% and 2.9% , respectively. The Troy, Ohio lease is secured by a mortgage on the real estate and is guaranteed by Griffon. The Ocala, Florida lease contains one five -year renewal option. At June 30, 2020 , $11,528 was outstanding, net of issuance costs. (e) In November 2012, Garant G.P. (“Garant”) entered into a CAD 15,000 ( $10,974 as of June 30, 2020 ) revolving credit facility. The facility accrues interest at LIBOR (USD) or the Bankers Acceptance Rate (CDN) plus 1.3% per annum ( 1.46% LIBOR USD and 1.56% Bankers Acceptance Rate CDN as of June 30, 2020 ). The revolving facility matures in October 2022. Garant is required to maintain a certain minimum equity. At June 30, 2020 , there were no borrowings under the revolving credit facility with CAD 15,000 ( $10,974 as of June 30, 2020 ) available for borrowing. In July 2016 and as amended in March 2019, Griffon Australia Holdings Pty Ltd and its Australian subsidiaries (collectively, "Griffon Australia") entered into an AUD 29,625 term loan, AUD 20,000 revolver and AUD 10,000 receivable purchase facility agreement. The term loan requires quarterly principal payments of AUD 1,250 plus interest with a balloon payment of AUD 9,625 due upon maturity in March 2022, and accrues interest at Bank Bill Swap Bid Rate “BBSY” plus 1.95% per annum ( 2.09% at June 30, 2020 ). During the quarter ended June 30, 2020 , the term loan balance was reduced by AUD 5,000 , from AUD 23,375 to AUD 18,375 with proceeds from an AUD 5,000 increase in the commitment of the receivables purchase line from AUD 10,000 to AUD 15,000 . The term loan had an outstanding balance of AUD 17,125 ( $11,761 as of June 30, 2020 ). The revolving facility and receivable purchase facility mature in March 2022, but are renewable upon mutual agreement with the lender. The revolving facility and receivable purchase facility accrue interest at BBSY plus 1.9% and 1.35% , respectively, per annum ( 2.05% and 1.49% , respectively, at June 30, 2020 ). At June 30, 2020 , there were no borrowings under the revolver and the receivable purchase facility. The revolver, receivable purchase facility and the term loan are all secured by substantially all of the assets of Griffon Australia and its subsidiaries. Griffon Australia is required to maintain a certain minimum equity level and is subject to a maximum leverage ratio and a minimum fixed charges cover ratio. In July 2018, the AMES Companies UK Ltd and its subsidiaries (collectively, "AMES UK") entered into a GBP 14,000 term loan, GBP 4,000 mortgage loan and GBP 5,000 revolver. The term loan and mortgage loan require quarterly principal payments of GBP 350 and GBP 83 plus interest, respectively, and have balloon payments due upon maturity, July 2023, of GBP 7,700 and GBP 2,500 , respectively. The Term Loan and Mortgage Loans accrue interest at the GBP LIBOR Rate plus 2.25% and 1.8% , respectively ( 2.33% and 1.88% at June 30, 2020 , respectively). The revolving facility matures in June 2021, but is renewable upon mutual agreement with the lender, and accrues interest at the Bank of England Base Rate plus 1.75% ( 1.85% as of June 30, 2020 ). As of June 30, 2020 , the revolver had no outstanding balance while the term and mortgage loan balances amounted to GBP 15,398 ( $18,975 as of June 30, 2020). The revolver and the term loan are both secured by substantially all of the assets of AMES UK and its subsidiaries. AMES UK is subject to a maximum leverage ratio and a minimum fixed charges cover ratio. An invoice discounting arrangement was canceled and replaced by the above loan facilities. (f) Other long-term debt primarily consists of a loan with the Pennsylvania Industrial Development Authority, with the balance consisting of capital leases. At June 30, 2020 , Griffon and its subsidiaries were in compliance with the terms and covenants of all credit and loan agreements.

SHAREHOLDERS' EQUITY SHAREHOLDE

SHAREHOLDERS' EQUITY SHAREHOLDERS' EQUITY (Tables)	9 Months Ended
	Jun. 30, 2020
Stockholders' Equity Note [Abstract]
Compensation Expense Relating to Stock-based Incentive Plans	The following table summarizes the Company’s compensation expense relating to all stock-based incentive plans: For the Three Months Ended June 30, For the Nine Months Ended June 30, 2020 2019 2020 2019 Restricted stock $ 3,930 $ 3,332 $ 10,742 $ 9,687 ESOP 577 715 2,067 1,860 Total stock based compensation $ 4,507 $ 4,047 $ 12,809 $ 11,547

EARNINGS PER SHARE (EPS) (Table

EARNINGS PER SHARE (EPS) (Tables)	9 Months Ended
	Jun. 30, 2020
Earnings Per Share [Abstract]
Summary of Reconciliation of Share Amounts Used in Earnings Per Share	The following table is a reconciliation of the share amounts (in thousands) used in computing earnings per share: Three Months Ended June 30, Nine Months Ended June 30, 2020 2019 2020 2019 Common shares outstanding 47,425 46,801 47,425 46,801 Unallocated ESOP shares (2,108 ) (2,314 ) (2,108 ) (2,314 ) Non-vested restricted stock (3,555 ) (3,426 ) (3,555 ) (3,426 ) Impact of weighted average shares (50 ) (94 ) (279 ) (173 ) Weighted average shares outstanding - basic 41,712 40,967 41,483 40,888 Incremental shares from stock based compensation 2,062 2,197 2,335 1,761 Weighted average shares outstanding - diluted 43,774 43,164 43,818 42,649

BUSINESS SEGMENTS (Tables)

BUSINESS SEGMENTS (Tables)	9 Months Ended
	Jun. 30, 2020
Segment Reporting [Abstract]
Summary of Reportable Segments from Continuing Operations	Information on Griffon’s reportable segments from continuing operations is as follows: For the Three Months Ended June 30, For the Nine Months Ended June 30, REVENUE 2020 2019 2020 2019 Consumer and Professional Products $ 328,929 $ 273,710 $ 844,917 $ 777,916 Home and Building Products 219,164 221,521 670,374 631,615 Defense Electronics 83,968 79,739 231,558 225,594 Total consolidated net sales $ 632,061 $ 574,970 $ 1,746,849 $ 1,635,125 For the Three Months Ended June 30, For the Nine Months Ended June 30, 2020 2019 2020 2019 Segment adjusted EBITDA: Consumer and Professional Products $ 37,115 $ 23,970 $ 84,068 $ 73,151 Home and Building Products 39,299 33,851 110,635 85,283 Defense Electronics 4,122 7,280 12,845 17,001 Segment adjusted EBITDA 80,536 65,101 207,548 175,435 Unallocated amounts, excluding depreciation (11,080 ) (12,033 ) (34,969 ) (34,505 ) Adjusted EBITDA 69,456 53,068 172,579 140,930 Net interest expense (16,585 ) (17,087 ) (49,096 ) (50,723 ) Depreciation and amortization (15,523 ) (15,595 ) (47,067 ) (46,172 ) Loss from debt extinguishment (1,235 ) — (7,925 ) — Restructuring charges (1,633 ) — (11,171 ) — Acquisition costs — — (2,960 ) — Income before taxes from continuing operations $ 34,480 $ 20,386 $ 54,360 $ 44,035 Unallocated amounts typically include general corporate expenses not attributable to a reportable segment. For the Three Months Ended June 30, For the Nine Months Ended June 30, DEPRECIATION and AMORTIZATION 2020 2019 2020 2019 Segment: Consumer and Professional Products $ 8,197 $ 8,158 $ 24,650 $ 24,148 Home and Building Products 4,507 4,626 13,975 13,683 Defense Electronics 2,666 2,669 7,986 7,926 Total segment depreciation and amortization 15,370 15,453 46,611 45,757 Corporate 153 142 456 415 Total consolidated depreciation and amortization $ 15,523 $ 15,595 $ 47,067 $ 46,172 CAPITAL EXPENDITURES Segment: Consumer and Professional Products $ 7,029 $ 3,187 $ 14,561 $ 11,327 Home and Building Products 3,640 5,088 15,135 10,423 Defense Electronics 1,538 2,064 4,748 5,797 Total segment 12,207 10,339 34,444 27,547 Corporate 25 37 307 247 Total consolidated capital expenditures $ 12,232 $ 10,376 $ 34,751 $ 27,794 ASSETS At June 30, 2020 At September 30, 2019 Segment assets: Consumer and Professional Products $ 1,269,540 $ 1,070,510 Home and Building Products 592,038 571,216 Defense Electronics 335,262 347,575 Total segment assets 2,196,840 1,989,301 Corporate 105,343 82,429 Total continuing assets 2,302,183 2,071,730 Assets of discontinued operations 8,037 3,209 Consolidated total $ 2,310,220 $ 2,074,939
Summary of Disaggregation of Revenue by End Market and Segment	The following table presents revenue disaggregated by end market and segment: For the Three Months Ended June 30, For the Nine Months Ended June 30, 2020 2019 2020 2019 Residential repair and remodel $ 50,709 $ 35,416 $ 126,304 $ 101,015 Retail 177,271 148,596 441,795 424,537 Residential new construction 14,487 15,345 44,344 43,162 Industrial 9,303 12,880 30,461 34,054 International excluding North America 77,159 61,473 202,013 175,148 Total Consumer and Professional Products 328,929 273,710 844,917 777,916 Residential repair and remodel 109,876 112,730 332,681 316,368 Commercial construction 84,521 83,382 262,708 243,939 Residential new construction 24,767 25,409 74,985 71,308 Total Home and Building Products 219,164 221,521 670,374 631,615 U.S. Government 54,802 46,579 151,126 138,515 International 24,779 30,120 68,333 75,348 Commercial 4,387 3,040 12,099 11,731 Total Defense Electronics 83,968 79,739 231,558 225,594 Total Consolidated Revenue $ 632,061 $ 574,970 $ 1,746,849 $ 1,635,125 The following table presents revenue disaggregated by geography based on the location of the Company's customer: REVENUE BY GEOGRAPHIC AREA - DESTINATION For the Three Months Ended June 30, 2020 For the Nine Months Ended June 30, 2020 CPP HBP Defense Electronics Total CPP HBP Defense Electronics Total United States $ 232,544 $ 209,222 $ 56,294 $ 498,060 $ 584,114 $ 635,232 $ 157,508 $ 1,376,854 Europe 29,267 81 8,636 37,984 60,609 109 24,501 85,219 Canada 18,231 7,729 3,012 28,972 53,527 26,849 9,795 90,171 Australia 47,614 — 1,012 48,626 140,874 — 1,807 142,681 All other countries 1,273 2,132 15,014 18,419 5,793 8,184 37,947 51,924 Consolidated revenue $ 328,929 $ 219,164 $ 83,968 $ 632,061 $ 844,917 $ 670,374 $ 231,558 $ 1,746,849 REVENUE BY GEOGRAPHIC AREA - DESTINATION For the Three Months Ended June 30, 2019 For the Nine Months Ended June 30, 2019 CPP HBP Defense Electronics Total CPP HBP Defense Electronics Total United States $ 193,948 $ 206,489 $ 49,379 $ 449,816 $ 541,309 $ 592,261 $ 148,853 $ 1,282,423 Europe 25,663 31 8,387 34,081 53,871 77 27,188 81,136 Canada 16,246 9,867 2,855 28,968 54,456 27,832 8,542 90,830 Australia 35,829 163 838 36,830 121,617 613 2,426 124,656 All other countries 2,024 4,971 18,280 25,275 6,663 10,832 38,585 56,080 Consolidated revenue $ 273,710 $ 221,521 $ 79,739 $ 574,970 $ 777,916 $ 631,615 $ 225,594 $ 1,635,125

EMPLOYEE BENEFIT PLANS (Tables)

EMPLOYEE BENEFIT PLANS (Tables)	9 Months Ended
	Jun. 30, 2020
Retirement Benefits [Abstract]
Summary of Defined Benefit Plans Included in Other Income	Defined benefit pension expense (income) included in Other Income (Expense), net was as follows: Three Months Ended June 30, Nine Months Ended June 30, 2020 2019 2020 2019 Interest cost $ 1,148 $ 1,570 $ 3,450 $ 4,711 Expected return on plan assets (2,585 ) (2,583 ) (7,757 ) (7,749 ) Amortization: Prior service cost 3 4 11 11 Recognized actuarial loss 1,042 222 3,126 666 Net periodic expense (income) $ (392 ) $ (787 ) $ (1,170 ) $ (2,361 )

DISCONTINUED OPERATIONS (Tables

DISCONTINUED OPERATIONS (Tables)	9 Months Ended
	Jun. 30, 2020
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures	The following amounts summarize the total assets and liabilities are primarily for the Installation Services and other discontinued activities which have been segregated from Griffon’s continuing operations, and are reported as assets and liabilities of discontinued operations in the Condensed Consolidated Balance Sheets: At June 30, 2020 At September 30, 2019 Assets of discontinued operations: Prepaid and other current assets $ 1,951 $ 321 Other long-term assets 6,086 2,888 Total assets of discontinued operations $ 8,037 $ 3,209 Liabilities of discontinued operations: Accrued liabilities, current $ 3,730 $ 4,333 Other long-term liabilities 6,281 3,331 Total liabilities of discontinued operations $ 10,011 $ 7,664

RESTRUCTURING CHARGES RESTRUCTU

RESTRUCTURING CHARGES RESTRUCTURING CHARGES (Tables)	9 Months Ended
	Jun. 30, 2020
Restructuring and Related Activities [Abstract]
Summary of the Restructuring and Other Related Charges	A summary of the restructuring and other related charges included in Cost of goods and services and Selling, general and administrative expenses in the Company's Condensed Consolidated Statements of Operations were as follows: For the Three Months Ended June 30, 2020 For the Nine Months Ended June 30, 2020 Cost of goods and services $ 20 $ 4,096 Selling, general and administrative expenses 1,613 7,075 Total restructuring charges $ 1,633 $ 11,171 For the Three Months Ended June 30, 2020 For the Nine Months Ended June 30, 2020 Personnel related costs $ 1,050 $ 4,842 Facilities, exit costs and other 583 1,637 Non-cash facility and other — 4,692 Total $ 1,633 $ 11,171
Summary of Accrued Liability for the Restructuring and Related Charges	The following table summarizes the accrued liabilities of the Company's restructuring actions: Cash Charges Non-Cash Personnel related costs Facilities & Facility and Other Costs Total Accrued liability at September 30, 2019 $ — $ — $ — $ — Q1 restructuring charges 2,134 140 4,160 6,434 Cash payments (621 ) (140 ) — (761 ) Non-cash charges (1) — — (4,160 ) (4,160 ) Accrued liability at December 31, 2019 $ 1,513 $ — $ — $ 1,513 Q2 restructuring charges 1,658 914 532 3,104 Cash payments (1,041 ) (914 ) — (1,955 ) Non-cash charges (1) — — (532 ) (532 ) Accrued liability at March 31, 2020 $ 2,130 $ — $ — $ 2,130 Q3 restructuring charges 1,050 583 — 1,633 Cash payments (828 ) (380 ) — (1,208 ) Accrued liability at June 30, 2020 $ 2,352 $ 203 $ — $ 2,555 (1) Non-cash charges in Facility and Other Costs primarily represent the non-cash write-off of certain long-lived assets in connection with certain facility closures.

WARRANTY LIABILITY (Tables)

WARRANTY LIABILITY (Tables)	9 Months Ended
	Jun. 30, 2020
Product Warranties Disclosures [Abstract]
Summary of Changes in Warranty Liability, Included in Accrued Liabilities	Changes in Griffon’s warranty liability, included in Accrued liabilities, were as follows: Three Months Ended June 30, Nine Months Ended June 30, 2020 2019 2020 2019 Balance, beginning of period $ 7,789 $ 8,011 $ 7,894 $ 8,174 Warranties issued and changes in estimated pre-existing warranties 5,773 3,780 14,000 12,541 Actual warranty costs incurred (3,661 ) (4,063 ) (11,993 ) (12,987 ) Balance, end of period $ 9,901 $ 7,728 $ 9,901 $ 7,728

OTHER COMPREHENSIVE INCOME (L_2

OTHER COMPREHENSIVE INCOME (LOSS) (Tables)	9 Months Ended
	Jun. 30, 2020
OCI, Net of Tax [Abstract]
Summary of Comprehensive Income (Loss)	The amounts recognized in other comprehensive income (loss) were as follows: Three Months Ended June 30, 2020 Three Months Ended June 30, 2019 Pre-tax Tax Net of tax Pre-tax Tax Net of tax Foreign currency translation adjustments $ 9,508 $ — $ 9,508 $ (1,092 ) $ — $ (1,092 ) Pension and other defined benefit plans 1,443 (304 ) 1,139 236 (52 ) 184 Cash flow hedges (2,779 ) 834 (1,945 ) (199 ) 72 (127 ) Total other comprehensive income (loss) $ 8,172 $ 530 $ 8,702 $ (1,055 ) $ 20 $ (1,035 ) Nine Months Ended June 30, 2020 Nine Months Ended June 31, 2019 Pre-tax Tax Net of tax Pre-tax Tax Net of tax Foreign currency translation adjustments $ (493 ) $ — $ (493 ) $ (3,943 ) $ — $ (3,943 ) Pension and other defined benefit plans 3,137 (657 ) 2,480 708 (156 ) 552 Cash flow hedges (1,826 ) 548 (1,278 ) (306 ) 92 (214 ) Total other comprehensive income (loss) $ 818 $ (109 ) $ 709 $ (3,541 ) $ (64 ) $ (3,605 ) The components of Accumulated other comprehensive income (loss) are as follows: At June 30, 2020 At September 30, 2019 Foreign currency translation adjustments $ (31,777 ) $ (31,284 ) Pension and other defined benefit plans (32,334 ) (34,814 ) Change in Cash flow hedges (1,096 ) 182 $ (65,207 ) $ (65,916 )
Reclassification from Accumulated Other Comprehensive Income (Loss)	Amounts reclassified from accumulated other comprehensive income (loss) to income were as follows: For the Three Months Ended June 30, For the Nine Months Ended June 30, Gain (Loss) 2020 2019 2020 2019 Pension amortization $ (1,045 ) $ (226 ) $ (3,137 ) $ (677 ) Cash flow hedges 556 663 1,550 1,597 Total gain (loss) $ (489 ) $ 437 (1,587 ) 920 Tax benefit (expense) 102 (92 ) 333 (193 ) Total $ (387 ) $ 345 $ (1,254 ) $ 727

LEASES LEASES (Tables)

LEASES LEASES (Tables)	9 Months Ended
	Jun. 30, 2020
Leases [Abstract]
Components of Operating Lease Cost, Cash Flow Information, and Average Lease Terms and Discount Rates	Average lease terms and discount rates were as follows: At June 30, 2020 Weighted-average remaining lease term (years) Operating leases 8.3 Finance Leases 2.3 Weighted-average discount rate Operating Leases 5.17 % Finance Leases 4.36 % For the Three Months Ended June 30, 2020 For the Nine Months Ended June 30, 2020 Fixed $ 9,909 $ 28,648 Variable (a), (b) 2,032 5,608 Short-term (b) 1,280 4,103 Total* $ 13,221 $ 38,359 (a) Primarily related to common-area maintenance and property taxes. (b) Not recorded on the balance sheet. Supplemental cash flow information were as follows: For the Nine Months ended June 30, 2020 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 32,882 Financing cash flows from finance leases 3,202 Total $ 36,084
Supplemental Condensed Consolidated Balance Sheet Information	Supplemental Condensed Consolidated Balance Sheet information related to leases were as follows: At June 30, 2020 Operating Leases: Right of use assets: Operating right-of-use assets $ 154,955 Lease Liabilities: Current portion of operating lease liabilities $ 29,018 Long-term operating lease liabilities 131,650 Total operating lease liabilities $ 160,668 Finance Leases: Property, plant and equipment, net (1) $ 13,318 Lease Liabilities: Notes payable and current portion of long-term debt $ 3,427 Long-term debt, net 9,725 Total financing lease liabilities $ 13,152 (1) Finance lease assets are recorded net of accumulated depreciation of $1,464 .
Aggregate Future Maturities of Lease Payments for Operating Leases	The aggregate future maturities of lease payments for operating leases and finance leases as of June 30, 2020 are as follows (in thousands): Operating Leases Finance Leases 2020 (a) $ 8,794 $ 1,259 2021 34,624 4,252 2022 29,658 2,673 2023 23,123 2,361 2024 16,904 2,101 2025 14,773 1,382 Thereafter 70,304 — Total lease payments 198,180 14,028 Less: Imputed Interest (37,512 ) (876 ) Present value of lease liabilities $ 160,668 $ 13,152 (a) Excluding the nine months ended June 30, 2020
Aggregate Future Maturities of Lease Payments for Finance Leases	The aggregate future maturities of lease payments for operating leases and finance leases as of June 30, 2020 are as follows (in thousands): Operating Leases Finance Leases 2020 (a) $ 8,794 $ 1,259 2021 34,624 4,252 2022 29,658 2,673 2023 23,123 2,361 2024 16,904 2,101 2025 14,773 1,382 Thereafter 70,304 — Total lease payments 198,180 14,028 Less: Imputed Interest (37,512 ) (876 ) Present value of lease liabilities $ 160,668 $ 13,152 (a) Excluding the nine months ended June 30, 2020
Minimum Lease Payments for Operating Leases, Prior to ASU 2016-02 Adoption	The aggregate minimum lease payments for operating leases, as calculated prior to the adoption of ASU 2016-02, were as follows: At September 30, 2019 2020 $ 35,176 2021 30,730 2022 26,119 2023 20,008 2024 14,198 Thereafter 78,105 Total $ 204,336

CONSOLIDATING GUARANTOR AND N_2

CONSOLIDATING GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION (Tables)	9 Months Ended
	Jun. 30, 2020
Consolidating Guarantor And Non Guarantor Financial Information [Abstract]
Condensed Consolidating Balance Sheets	CONDENSED CONSOLIDATING BALANCE SHEETS At June 30, 2020 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation CURRENT ASSETS Cash and equivalents $ 4,727 $ 19,697 $ 47,575 $ — $ 71,999 Accounts receivable, net of allowances — 307,625 217,590 (165,751 ) 359,464 Contract costs and recognized income not yet billed, net of progress payments — 89,526 2,617 — 92,143 Inventories, net — 347,703 63,903 (578 ) 411,028 Prepaid and other current assets 19,519 24,144 5,068 2,634 51,365 Assets of discontinued operations — — 1,951 — 1,951 Total Current Assets 24,246 788,695 338,704 (163,695 ) 987,950 PROPERTY, PLANT AND EQUIPMENT, net 1,232 289,224 44,862 — 335,318 OPERATING LEASE RIGHT-OF-USE ASSETS 9,633 124,566 20,756 — 154,955 GOODWILL — 375,734 63,933 — 439,667 INTANGIBLE ASSETS, net 93 219,056 135,235 — 354,384 INTERCOMPANY RECEIVABLE 16,555 679,666 84,671 (780,892 ) — EQUITY INVESTMENTS IN SUBSIDIARIES 1,702,746 766,863 3,154,553 (5,624,162 ) — OTHER ASSETS 12,228 39,491 (5,638 ) (14,221 ) 31,860 ASSETS OF DISCONTINUED OPERATIONS — — 6,086 — 6,086 Total Assets $ 1,766,733 $ 3,283,295 $ 3,843,162 $ (6,582,970 ) $ 2,310,220 CURRENT LIABILITIES Notes payable and current portion of long-term debt $ — $ 2,973 $ 6,262 $ — $ 9,235 Accounts payable and accrued liabilities 58,619 426,260 72,451 (163,142 ) 394,188 Current portion of operating lease liabilities 1,842 22,229 4,947 — 29,018 Liabilities of discontinued operations — — 3,730 — 3,730 Total Current Liabilities 60,461 451,462 87,390 (163,142 ) 436,171 LONG-TERM DEBT, net 1,087,135 10,258 25,972 — 1,123,365 LONG-TERM OPERATING LEASE LIABILITIES 8,886 106,552 16,212 — 131,650 INTERCOMPANY PAYABLES 77,139 254,479 467,463 (799,081 ) — OTHER LIABILITIES 24,657 77,228 10,242 (7,829 ) 104,298 LIABILITIES OF DISCONTINUED OPERATIONS — — 6,281 — 6,281 Total Liabilities 1,258,278 899,979 613,560 (970,052 ) 1,801,765 SHAREHOLDERS’ EQUITY 508,455 2,383,316 3,229,602 (5,612,918 ) 508,455 Total Liabilities and Shareholders’ Equity $ 1,766,733 $ 3,283,295 $ 3,843,162 $ (6,582,970 ) $ 2,310,220 CONDENSED CONSOLIDATING BALANCE SHEETS At September 30, 2019 ($ in thousands) Parent Guarantor Non-Guarantor Elimination Consolidation CURRENT ASSETS Cash and equivalents $ 1,649 $ 25,217 $ 45,511 $ — $ 72,377 Accounts receivable, net of allowances — 227,069 38,580 (1,199 ) 264,450 Contract costs and recognized income not yet billed, net of progress payments — 104,109 1,002 — 105,111 Inventories, net — 372,839 69,540 (258 ) 442,121 Prepaid and other current assets 8,238 25,754 6,951 (144 ) 40,799 Assets of discontinued operations — — 321 — 321 Total Current Assets 9,887 754,988 161,905 (1,601 ) 925,179 PROPERTY, PLANT AND EQUIPMENT, net 1,184 289,282 46,860 — 337,326 GOODWILL — 375,734 61,333 — 437,067 INTANGIBLE ASSETS, net 93 224,275 132,271 — 356,639 INTERCOMPANY RECEIVABLE 5,834 864,884 75,684 (946,402 ) — EQUITY INVESTMENTS IN SUBSIDIARIES 1,628,031 581,438 3,233,038 (5,442,507 ) — OTHER ASSETS 8,182 24,635 (2,352 ) (14,625 ) 15,840 ASSETS OF DISCONTINUED OPERATIONS — — 2,888 — 2,888 Total Assets $ 1,653,211 $ 3,115,236 $ 3,711,627 $ (6,405,135 ) $ 2,074,939 CURRENT LIABILITIES Notes payable and current portion of long-term debt $ — $ 3,075 $ 7,450 $ — $ 10,525 Accounts payable and accrued liabilities 41,796 266,411 68,390 (1,356 ) 375,241 Liabilities of discontinued operations — — 4,333 — 4,333 Total Current Liabilities 41,796 269,486 80,173 (1,356 ) 390,099 LONG-TERM DEBT, net 1,040,449 3,119 50,181 — 1,093,749 INTERCOMPANY PAYABLES 71,634 457,265 444,557 (973,456 ) — OTHER LIABILITIES 21,569 81,582 15,017 (8,171 ) 109,997 LIABILITIES OF DISCONTINUED OPERATIONS — — 3,331 — 3,331 Total Liabilities 1,175,448 811,452 593,259 (982,983 ) 1,597,176 SHAREHOLDERS’ EQUITY 477,763 2,303,784 3,118,368 (5,422,152 ) 477,763 Total Liabilities and Shareholders’ Equity $ 1,653,211 $ 3,115,236 $ 3,711,627 $ (6,405,135 ) $ 2,074,939
Condensed Consolidating Statements of Operations and Comprehensive Income (Loss)	CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) For the Three Months Ended June 30, 2020 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation Revenue $ — $ 515,083 $ 126,847 $ (9,869 ) $ 632,061 Cost of goods and services — 385,717 91,541 (10,200 ) 467,058 Gross profit — 129,366 35,306 331 165,003 Selling, general and administrative expenses 5,229 85,512 22,913 (145 ) 113,509 Income (loss) from operations (5,229 ) 43,854 12,393 476 51,494 Other income (expense) Interest income (expense), net (7,013 ) (9,537 ) (35 ) — (16,585 ) Loss from debt extinguishment, net (1,235 ) — — — (1,235 ) Other, net 126 (2,852 ) 4,004 (472 ) 806 Total other income (expense) (8,122 ) (12,389 ) 3,969 (472 ) (17,014 ) Income (loss) before taxes (13,351 ) 31,465 16,362 4 34,480 Provision (benefit) for income taxes (3,533 ) 10,843 5,335 4 12,649 Income (loss) before equity in net income of subsidiaries (9,818 ) 20,622 11,027 — 21,831 Equity in net income (loss) of subsidiaries 31,649 10,920 20,622 (63,191 ) — Net Income (loss) $ 21,831 $ 31,542 $ 31,649 $ (63,191 ) $ 21,831 Comprehensive income (loss) $ 30,533 $ 36,940 $ 26,251 $ (63,191 ) $ 30,533 CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) For the Three Months Ended June 30, 2019 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation Revenue $ — $ 470,228 $ 118,694 $ (13,952 ) $ 574,970 Cost of goods and services — 350,197 84,568 (14,278 ) 420,487 Gross profit — 120,031 34,126 326 154,483 Selling, general and administrative expenses 5,342 85,885 27,252 (490 ) 117,989 Income (loss) from operations (5,342 ) 34,146 6,874 816 36,494 Other income (expense) Interest income (expense), net (7,171 ) (9,048 ) (868 ) — (17,087 ) Other, net 4,963 (15,918 ) 12,762 (828 ) 979 Total other income (expense) (2,208 ) (24,966 ) 11,894 (828 ) (16,108 ) Income (loss) before taxes (7,550 ) 9,180 18,768 (12 ) 20,386 Provision (benefit) for income taxes (4,815 ) 9,124 1,961 (12 ) 6,258 Income (loss) before equity in net income of subsidiaries (2,735 ) 56 16,807 — 14,128 Equity in net income (loss) of subsidiaries 16,330 15,641 56 (32,027 ) — Income (loss) from continuing operations 13,595 15,697 16,863 (32,027 ) 14,128 Income (loss) from operation of discontinued businesses — — — — — Provision (benefit) from income taxes — — 533 — 533 Income (loss) from discontinued operations — — (533 ) — (533 ) Net Income (loss) $ 13,595 $ 15,697 $ 16,330 $ (32,027 ) $ 13,595 Comprehensive income (loss) $ 12,560 $ (597 ) $ 32,624 $ (32,027 ) $ 12,560 CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) For the Nine Months Ended June 30, 2020 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation Revenue $ — $ 1,418,975 $ 357,812 $ (29,938 ) $ 1,746,849 Cost of goods and services — 1,058,556 252,331 (30,994 ) 1,279,893 Gross profit — 360,419 105,481 1,056 466,956 Selling, general and administrative expenses 19,169 264,698 74,237 (330 ) 357,774 Income (loss) from operations (19,169 ) 95,721 31,244 1,386 109,182 Other income (expense) Interest income (expense), net (20,217 ) (28,916 ) 37 — (49,096 ) Loss from debt extinguishment, net (7,925 ) — — — (7,925 ) Other, net (389 ) (6,870 ) 10,844 (1,386 ) 2,199 Total other income (expense) (28,531 ) (35,786 ) 10,881 (1,386 ) (54,822 ) Income (loss) before taxes (47,700 ) 59,935 42,125 — 54,360 Provision (benefit) for income taxes (17,355 ) 22,648 15,729 — 21,022 Income (loss) before equity in net income of subsidiaries (30,345 ) 37,287 26,396 — 33,338 Equity in net income (loss) of subsidiaries 63,683 26,457 37,287 (127,427 ) — Net income (loss) $ 33,338 $ 63,744 $ 63,683 $ (127,427 ) $ 33,338 Comprehensive income (loss) $ 34,047 $ 63,744 $ 63,683 $ (127,427 ) $ 34,047 CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) For the Nine Months Ended June 30, 2019 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation Revenue $ — $ 1,352,211 $ 311,219 $ (28,305 ) $ 1,635,125 Cost of goods and services — 1,013,676 215,786 (29,370 ) 1,200,092 Gross profit — 338,535 95,433 1,065 435,033 Selling, general and administrative expenses 15,651 255,674 72,478 (277 ) 343,526 Income (loss) from operations (15,651 ) 82,861 22,955 1,342 91,507 Other income (expense) Interest income (expense), net (20,806 ) (27,306 ) (2,611 ) — (50,723 ) Other, net 4,228 (14,102 ) 14,479 (1,354 ) 3,251 Total other income (expense) (16,578 ) (41,408 ) 11,868 (1,354 ) (47,472 ) Income (loss) before taxes (32,229 ) 41,453 34,823 (12 ) 44,035 Provision (benefit) for income taxes (12,592 ) 20,390 6,878 (12 ) 14,664 Income (loss) before equity in net income of subsidiaries (19,637 ) 21,063 27,945 — 29,371 Equity in net income (loss) of subsidiaries 40,829 33,337 21,063 (95,229 ) — Income (loss) from continuing operations $ 21,192 $ 54,400 $ 49,008 $ (95,229 ) $ 29,371 Income (loss) from operations of discontinued businesses — — (11,000 ) — (11,000 ) Provision (benefit) from income taxes — — (2,821 ) — (2,821 ) Income (loss) from discontinued operations — — (8,179 ) — (8,179 ) Net income (loss) $ 21,192 $ 54,400 $ 40,829 $ (95,229 ) $ 21,192 Comprehensive income (loss) $ 17,587 $ 58,450 $ 36,779 $ (95,229 ) $ 17,587
Condensed Consolidating Statements of Cash Flows	CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Nine Months Ended June 30, 2020 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation CASH FLOWS FROM OPERATING ACTIVITIES: Net income (loss) $ 33,338 $ 63,744 $ 63,683 $ (127,427 ) $ 33,338 Net cash provided by (used in) operating activities: (10,683 ) 35,520 31,107 — 55,944 CASH FLOWS FROM INVESTING ACTIVITIES: Acquisition of property, plant and equipment (306 ) (30,497 ) (3,948 ) — (34,751 ) Acquired businesses, net of cash acquired — — (10,531 ) — (10,531 ) Investment purchases (130 ) — — — (130 ) Proceeds from sale of assets — 341 (2 ) — 339 Net cash provided by (used in) investing activities (436 ) (30,156 ) (14,481 ) — (45,073 ) CASH FLOWS FROM FINANCING ACTIVITIES: Purchase of shares for treasury (7,479 ) — — — (7,479 ) Proceeds from long-term debt 1,224,722 — 5,896 — 1,230,618 Payments of long-term debt (1,171,365 ) (2,647 ) (31,219 ) — (1,205,231 ) Financing costs (16,543 ) — — — (16,543 ) Dividends paid (10,639 ) — — — (10,639 ) Other, net (4,499 ) (7,723 ) 12,191 — (31 ) Net cash provided by (used in) financing activities 14,197 (10,370 ) (13,132 ) — (9,305 ) CASH FLOWS FROM DISCONTINUED OPERATIONS: Net cash provided by (used) in discontinued operations — — (2,481 ) — (2,481 ) Effect of exchange rate changes on cash and equivalents — (514 ) 1,051 — 537 NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS 3,078 (5,520 ) 2,064 — (378 ) CASH AND EQUIVALENTS AT BEGINNING OF PERIOD 1,649 25,217 45,511 — 72,377 CASH AND EQUIVALENTS AT END OF PERIOD $ 4,727 $ 19,697 $ 47,575 $ — $ 71,999 CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Nine Months Ended June 30, 2019 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation CASH FLOWS FROM OPERATING ACTIVITIES: Net income (loss) $ 21,192 $ 54,400 $ 40,829 $ (95,229 ) $ 21,192 Net (income) loss from discontinued operations — — 8,179 — 8,179 Net cash provided by (used in) operating activities: (20,805 ) 24,179 11,608 — 14,982 CASH FLOWS FROM INVESTING ACTIVITIES: Acquisition of property, plant and equipment (247 ) (23,221 ) (4,326 ) — (27,794 ) Acquired businesses, net of cash acquired (9,219 ) — — — (9,219 ) Investment purchases (149 ) — — — (149 ) Proceeds from sale of business (9,500 ) — — — (9,500 ) Insurance payments (10,604 ) — — — (10,604 ) Proceeds from sale of assets — 79 25 — 104 Net cash provided by (used in) investing activities (29,719 ) (23,142 ) (4,301 ) — (57,162 ) CASH FLOWS FROM FINANCING ACTIVITIES: Purchase of shares for treasury (1,478 ) — — — (1,478 ) Proceeds from long-term debt 138,541 116 18,143 — 156,800 Payments of long-term debt (75,694 ) (2,605 ) (29,961 ) — (108,260 ) Contingent consideration for acquired businesses — — (1,686 ) — (1,686 ) Financing costs (1,012 ) — — — (1,012 ) Dividends paid (10,262 ) — — — (10,262 ) Other, net (197 ) 5,694 (5,694 ) — (197 ) Net cash provided by (used in) financing activities 49,898 3,205 (19,198 ) — 33,905 CASH FLOWS FROM DISCONTINUED OPERATIONS: Net cash provided by (used in) discontinued operations — — (3,874 ) — (3,874 ) Effect of exchange rate changes on cash and equivalents — (118 ) 621 — 503 NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS (626 ) 4,124 (15,144 ) — (11,646 ) CASH AND EQUIVALENTS AT BEGINNING OF PERIOD 15,976 16,353 37,429 — 69,758 CASH AND EQUIVALENTS AT END OF PERIOD $ 15,350 $ 20,477 $ 22,285 $ — $ 58,112

DESCRIPTION OF BUSINESS AND B_3

DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (Details)	9 Months Ended
	Jun. 30, 2020segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments	3

FAIR VALUE MEASUREMENTS (Detail

FAIR VALUE MEASUREMENTS (Details) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2020USD ($)	Jun. 30, 2020USD ($)$ / shares
Australian Dollar Forward Contracts | Cost of goods and services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain reclassified for settled contracts	$ 556	$ 1,550
Designated as Hedging Instrument | Australian Dollar Forward Contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, notional amount	43,500	$ 43,500
Contracts weighted average rate price (in dollars per share) | $ / shares		$ 1.46
Deferred losses from currency translation included in AOCI	1,095	$ 1,095
Deferred losses from currency translation included in AOCI, net of tax	712	$ 712
Designated as Hedging Instrument | Australian Dollar Forward Contracts | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts duration		15 days
Designated as Hedging Instrument | Australian Dollar Forward Contracts | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts duration		209 days
Not Designated as Hedging Instrument | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts duration		2 days
Not Designated as Hedging Instrument | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts duration		328 days
Not Designated as Hedging Instrument | Canadian Dollar Forward Contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, notional amount	$ 3,125	$ 3,125
Derivative, average forward exchange rate	1.36	1.36
Not Designated as Hedging Instrument | British Pound Forward Contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, notional amount	$ 3,000	$ 3,000
Derivative, average forward exchange rate	0.81	0.81
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Insurance contracts fair value	$ 3,324	$ 3,324
Fair Value, Inputs, Level 2 | Other Income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) on foreign currency derivative instruments not designated as hedging instruments	(222)	(23)
Fair Value, Inputs, Level 2 | Not Designated as Hedging Instrument | Other Income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Realized gains (losses)	115	202
Fair Value, Inputs, Level 2 | Estimate of Fair Value Measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	3,028	3,028
Fair Value, Inputs, Level 2 | Portion at Other than Fair Value Measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	2,365	2,365
Senior notes due 2028 | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Convertible debt, fair value disclosures	$ 980,000	$ 980,000

REVENUE - Narrative (Details)

REVENUE - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Percentage of performance obligations recognized at a point in time (more than)		80.00%
Percentage of performance obligations recognized over time (less than)		20.00%
Net favorable (unfavorable) catch-up adjustments to income from operations	$ (4,100)	$ (9,344)
Accumulated estimated costs to complete loss contracts	$ 8,264	$ 8,264	$ 9,790

REVENUE - Transaction Price All

REVENUE - Transaction Price Allocated to the Remaining Performance Obligations (Details) $ in Thousands	Jun. 30, 2020USD ($)
Revenue from Contract with Customer [Abstract]
Remaining performance obligations (backlog)	$ 350,443
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations (backlog), percentage to to be satisfied by the end of the year	72.00%
Remaining performance obligations (backlog), expected timing of satisfaction, period	12 months

REVENUE - Contract Balances (De

REVENUE - Contract Balances (Details) - USD ($)	9 Months Ended
	Jun. 30, 2020	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Contract costs and recognized income not yet billed, net of progress payments	$ 92,143,000	$ 105,111,000
Decrease in contract assets balance	12,968,000
Contract costs and recognized income not yet billed, noncurrent	7,058,000	13,100,000
Reserves for contract risk	1,874,000	0
Contract liabilities	20,719,000	$ 26,259,000
Increase (decrease) in contract liabilities	$ (5,540,000)

ACQUISITIONS (Details)

ACQUISITIONS (Details) £ in Thousands	Nov. 29, 2019GBP (£)	Nov. 29, 2019USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Sep. 30, 2019USD ($)
Business Acquisition [Line Items]
Goodwill | $			$ 439,667,000		$ 439,667,000		$ 437,067,000
Acquisition related costs | $			$ 0	$ 0	$ 2,960,000	$ 0
Vatre Group Limited
Business Acquisition [Line Items]
Percentage of outstanding stock acquired	100.00%
Business combination, consideration transferred	£ 8,750	$ 10,500,000
Goodwill	2,418
Intangible assets	3,454
Inventory	2,914
Accounts receivable and other assets	2,492
Accounts payable and accrued liabilities	£ 2,734

INVENTORIES - Summary of Invent

INVENTORIES - Summary of Inventories Stated at Lower Cost (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Sep. 30, 2019
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 131,021	$ 121,791
Work in process	90,343	93,830
Finished goods	189,664	226,500
Total	$ 411,028	$ 442,121

PROPERTY, PLANT AND EQUIPMENT -

PROPERTY, PLANT AND EQUIPMENT - Summary of Property Plant and Equipment (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Sep. 30, 2019
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	$ 796,261
Property plant and equipment gross		$ 763,542
Accumulated depreciation and amortization	(460,943)
Accumulated depreciation and amortization		(426,216)
Total	335,318
Total		337,326
Land, building and building improvements
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	159,225
Property plant and equipment gross		133,036
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	585,298
Property plant and equipment gross		580,698
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	$ 51,738
Property plant and equipment gross		$ 49,808

PROPERTY, PLANT AND EQUIPMENT_2

PROPERTY, PLANT AND EQUIPMENT - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 13,142	$ 13,089	$ 39,890	$ 38,736
Selling, general and administrative expenses
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 4,852	$ 4,822	$ 14,713	$ 14,264

GOODWILL AND OTHER INTANGIBLE_2

GOODWILL AND OTHER INTANGIBLES - Summary of Changes in Carrying Value of Goodwill (Details) $ in Thousands	9 Months Ended
	Jun. 30, 2020USD ($)
Goodwill [Roll Forward]
September 30, 2019	$ 437,067
Goodwill from acquisitions	3,125
Other adjustments including currency translations	(525)
June 30, 2020	439,667
Consumer and Professional Products
Goodwill [Roll Forward]
September 30, 2019	227,269
Goodwill from acquisitions	3,125
Other adjustments including currency translations	(525)
June 30, 2020	229,869
Home and Building Products
Goodwill [Roll Forward]
September 30, 2019	191,253
Goodwill from acquisitions	0
Other adjustments including currency translations	0
June 30, 2020	191,253
Defense Electronics
Goodwill [Roll Forward]
September 30, 2019	18,545
Goodwill from acquisitions	0
Other adjustments including currency translations	0
June 30, 2020	$ 18,545

GOODWILL AND OTHER INTANGIBLE_3

GOODWILL AND OTHER INTANGIBLES - Summary of Gross Carrying Value and Accumulated Amortization of Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2020	Sep. 30, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 203,793	$ 202,682
Accumulated Amortization	72,093	65,112
Trademarks	222,684	219,069
Total intangible assets	426,477	421,751
Customer relationships & other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	184,445	183,515
Accumulated Amortization	$ 64,018	57,783
Average Life (Years)	23 years
Technology and patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 19,348	19,167
Accumulated Amortization	$ 8,075	$ 7,329
Average Life (Years)	13 years

GOODWILL AND OTHER INTANGIBLE_4

GOODWILL AND OTHER INTANGIBLES - Narrative (Details)	3 Months Ended				9 Months Ended
	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Sep. 30, 2019reporting_unit	Jun. 30, 2019USD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 2,381,000			$ 2,506,000	$ 7,177,000	$ 7,436,000
Estimated amortization expense, remainder of 2020	2,416,000				2,416,000
Estimated amortization expense, fiscal 2021	9,387,000				9,387,000
Estimated amortization expense, fiscal 2022	9,387,000				9,387,000
Estimated amortization expense, fiscal 2023	9,234,000				9,234,000
Estimated amortization expense, fiscal 2024	9,208,000				9,208,000
Estimated amortization expense, fiscal 2025	9,208,000				9,208,000
Estimated amortization expense, thereafter	$ 82,860,000				$ 82,860,000
Number of reporting units for goodwill impairment testing | reporting_unit			3
Goodwill impairment		$ 0
Indefinite-lived intangible asset (excluding goodwill) impairment		$ 0

INCOME TAXES (Details)

INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 12,649	$ 6,258	$ 21,022	$ 14,664
Income before taxes from continuing operations	34,480	20,386	54,360	44,035
Restructuring charges	1,633		11,171
Restructuring charges, net of tax	1,224		8,377
Loss from debt extinguishment	1,235		7,925
Loss from debt extinguishment, net of tax	969		6,214
Other tax provisions (benefits)	$ 1,828	$ (669)	$ 1,248	$ (299)
Effective tax rate	30.80%	34.00%	32.60%	34.00%
Acquisition costs			$ 2,960
Acquisition costs, net of tax			$ 2,321

LONG-TERM DEBT - Summary of Lon

LONG-TERM DEBT - Summary of Long-Term Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 22, 2020	Feb. 19, 2020	Sep. 30, 2019
Debt Instrument [Line Items]
Outstanding Balance	$ 1,149,903			$ 1,114,131
Less: current portion, outstanding balance	(9,235)			(10,525)
Long-term debt, outstanding balance	1,140,668			1,103,606
Original Issuer Premium	375			867
Less: current portion, original issuer premium, current	0			0
Long-term debt, original issuer premium, noncurrent	375			867
Capitalized Fees & Expenses	(17,678)			(10,724)
Balance Sheet	1,132,600			1,104,274
Less: current portion, balance sheet	(9,235)			(10,525)
Long-term debt, balance sheet	1,123,365			1,093,749
Senior notes due 2028
Debt Instrument [Line Items]
Outstanding Balance	1,000,000	$ 150,000		0
Original Issuer Premium	375			0
Capitalized Fees & Expenses	(14,877)			0
Balance Sheet	$ 985,498			$ 0
Coupon Interest Rate	5.75%	5.75%	5.75%	0.00%
Senior notes due 2022
Debt Instrument [Line Items]
Outstanding Balance	$ 0			$ 1,000,000
Original Issuer Premium	0			867
Capitalized Fees & Expenses	0			(9,175)
Balance Sheet	$ 0			$ 991,692
Coupon Interest Rate	5.25%		5.25%	5.25%
Revolver due 2025
Debt Instrument [Line Items]
Outstanding Balance	$ 104,181			$ 50,000
Original Issuer Premium	0			0
Capitalized Fees & Expenses	(2,544)			(1,243)
Balance Sheet	101,637			48,757
Capital lease - real estate
Debt Instrument [Line Items]
Outstanding Balance	11,564			4,388
Original Issuer Premium	0			0
Capitalized Fees & Expenses	(36)			(55)
Balance Sheet	$ 11,528			$ 4,333
Coupon Interest Rate	5.00%			5.00%
Non US lines of credit
Debt Instrument [Line Items]
Outstanding Balance	$ 0			$ 17,576
Original Issuer Premium	0			0
Capitalized Fees & Expenses	(33)			(45)
Balance Sheet	(33)			17,531
Non US term loans
Debt Instrument [Line Items]
Outstanding Balance	30,736			36,977
Original Issuer Premium	0			0
Capitalized Fees & Expenses	(172)			(188)
Balance Sheet	30,564			36,789
Other long term debt
Debt Instrument [Line Items]
Outstanding Balance	3,422			5,190
Original Issuer Premium	0			0
Capitalized Fees & Expenses	(16)			(18)
Balance Sheet	$ 3,406			$ 5,172

LONG-TERM DEBT - Summary of Int

LONG-TERM DEBT - Summary of Interest Expense Incurred (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Debt Instrument [Line Items]
Cash interest, capitalized interest	$ (16)	$ (18)	$ (109)	$ (18)
Cash interest	16,121	15,996	46,936	47,200
Amort. Debt Discount	11	68	123	202
Amort. Debt Issuance Costs & Other Fees	593	1,224	2,748	3,932
Total Interest Expense	$ 16,725	17,288	$ 49,807	51,334
Senior notes due 2028
Debt Instrument [Line Items]
Effective Interest Rate	5.80%		5.90%
Cash interest, including amounts capitalized	$ 12,219	0	$ 17,785	0
Amort. Debt Discount	0	0	0	0
Amort. Debt Issuance Costs & Other Fees	277	0	412	0
Total Interest Expense	$ 12,496	$ 0	$ 18,197	$ 0
Senior notes due 2022
Debt Instrument [Line Items]
Effective Interest Rate	6.20%	5.70%	5.70%	5.70%
Cash interest, including amounts capitalized	$ 1,960	$ 13,125	$ 23,125	$ 39,375
Amort. Debt Discount	11	68	123	202
Amort. Debt Issuance Costs & Other Fees	155	950	1,734	2,852
Total Interest Expense	2,126	14,143	24,982	42,429
Revolver due 2025
Debt Instrument [Line Items]
Cash interest, including amounts capitalized	1,597	2,282	4,798	4,846
Amort. Debt Discount	0	0	0	0
Amort. Debt Issuance Costs & Other Fees	134	220	531	761
Total Interest Expense	1,731	$ 2,502	5,329	$ 5,607
ESOP Loans
Debt Instrument [Line Items]
Effective Interest Rate		7.20%		6.60%
Cash interest, including amounts capitalized	0	$ 0	0	$ 937
Amort. Debt Discount	0	0	0	0
Amort. Debt Issuance Costs & Other Fees	0	0	0	186
Total Interest Expense	$ 0	$ 0	$ 0	$ 1,123
Capital lease - real estate
Debt Instrument [Line Items]
Effective Interest Rate	6.30%	5.60%	6.10%	5.50%
Cash interest, including amounts capitalized	$ 33	$ 78	$ 146	$ 294
Amort. Debt Discount	0	0	0	0
Amort. Debt Issuance Costs & Other Fees	6	7	19	19
Total Interest Expense	39	85	165	313
Non US lines of credit
Debt Instrument [Line Items]
Cash interest, including amounts capitalized	4	4	11	15
Amort. Debt Discount	0	0	0	0
Amort. Debt Issuance Costs & Other Fees	(1)	3	11	11
Total Interest Expense	3	7	22	26
Non US term loans
Debt Instrument [Line Items]
Cash interest, including amounts capitalized	222	376	786	1,273
Amort. Debt Discount	0	0	0	0
Amort. Debt Issuance Costs & Other Fees	21	44	40	97
Total Interest Expense	243	420	826	1,370
Other long term debt
Debt Instrument [Line Items]
Cash interest, including amounts capitalized	102	149	394	478
Amort. Debt Discount	0	0	0	0
Amort. Debt Issuance Costs & Other Fees	1	0	1	6
Total Interest Expense	$ 103	$ 149	$ 395	$ 484

LONG-TERM DEBT - Narrative (Det

LONG-TERM DEBT - Narrative (Details) $ in Thousands	Jun. 22, 2020USD ($)	Feb. 19, 2020USD ($)	Jun. 30, 2017USD ($)	Mar. 31, 2019AUD ($)	Jul. 31, 2018GBP (£)	Nov. 30, 2012CAD ($)	Jun. 30, 2020USD ($)	Jun. 30, 2020AUD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2020USD ($)option	Jun. 30, 2019USD ($)	Sep. 30, 2020USD ($)	Jun. 30, 2020GBP (£)	Jun. 30, 2020USD ($)	Jun. 30, 2020AUD ($)	Jun. 30, 2020CAD ($)	Jun. 29, 2020AUD ($)	Mar. 31, 2020AUD ($)	Jan. 30, 2020USD ($)	Jan. 29, 2020USD ($)	Sep. 30, 2019USD ($)
Debt Instrument [Line Items]
Debt outstanding														$ 1,149,903,000							$ 1,114,131,000
Loss from debt extinguishment							$ 1,235,000		$ 0	$ 7,925,000	$ 0
Basis spread on variable rate						1.30%
Mortgage loan balance														$ 1,132,600,000							1,104,274,000
Troy, Ohio
Debt Instrument [Line Items]
Percentage bearing fixed interest, percentage rate													5.00%	5.00%	5.00%	5.00%
Ocala, Florida
Debt Instrument [Line Items]
Percentage bearing fixed interest, percentage rate													2.90%	2.90%	2.90%	2.90%
Number of option to extend | option										1
Lease renewal term													5 years	5 years	5 years	5 years
Revolver due 2025
Debt Instrument [Line Items]
Maximum borrowing capacity																			$ 400,000	$ 350,000,000
Maximum borrowing capacity, accordion feature																			100,000,000	50,000,000
Maximum percentage of equity interest of subsidiaries borrowings guaranteed										65.00%
Long-term line of credit														$ 104,181,000
Outstanding standby letters of credit														21,617,000
Remaining borrowing capacity														$ 274,202,000
Revolver due 2025 | Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate										1.25%
Revolver due 2025 | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate										2.25%
Term Loan
Debt Instrument [Line Items]
Periodic payment terms, balloon payment to be paid | £					£ 7,700,000
Interest rate at period end													2.33%	2.33%	2.33%	2.33%
Term Loan | Northcote Holdings Pty. Ltd
Debt Instrument [Line Items]
Face amount				$ 29,625,000
Term Loan | Ames UK
Debt Instrument [Line Items]
Face amount | £					14,000,000
Debt instrument, periodic payment, principal | £					£ 350,000
Term Loan | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate					2.25%
Mortgages | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate					1.80%
Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate					1.75%
Interest rate at period end													1.85%	1.85%	1.85%	1.85%
Revolving Credit Facility | Ames UK
Debt Instrument [Line Items]
Face amount | £					£ 5,000,000
Term and Mortgage Loans | Ames UK
Debt Instrument [Line Items]
Mortgage loan balance													£ 15,398,000	$ 18,975,000
Letter of Credit Subfacility | Revolver due 2025
Debt Instrument [Line Items]
Maximum borrowing capacity																			100,000,000	50,000,000
Multicurrency Subfacility | Revolver due 2025
Debt Instrument [Line Items]
Maximum borrowing capacity																			$ 200,000,000	$ 100,000,000
Receivables Purchase Facility
Debt Instrument [Line Items]
Basis spread on variable rate				1.35%
Mortgage loan balance																	$ 15,000,000	$ 10,000,000
Debt instrument, interest rate, effective percentage													1.49%	1.49%	1.49%	1.49%
Increase in receivables purchase line								$ (5,000,000)
Senior notes due 2028
Debt Instrument [Line Items]
Debt outstanding	$ 150,000,000													$ 1,000,000,000							$ 0
Debt instrument, interest rate, stated percentage	5.75%	5.75%											5.75%	5.75%	5.75%	5.75%					0.00%
Debt Instrument, issuance price (in percentage)	100.25%
Face amount		$ 850,000,000
Capitalized fees and expenses		$ 15,289,000
Mortgage loan balance														$ 985,498,000							$ 0
Senior notes due 2028 | Fair Value, Inputs, Level 1
Debt Instrument [Line Items]
Convertible debt, fair value disclosures														980,000,000
Senior notes due 2022
Debt Instrument [Line Items]
Debt outstanding														$ 0							$ 1,000,000,000
Debt instrument, interest rate, stated percentage		5.25%											5.25%	5.25%	5.25%	5.25%					5.25%
Debt redeemed	$ 1,000,000,000
Loss from debt extinguishment		$ 7,925,000
Write off of debt issuance costs		6,725,000
Tender offer net premium expense		607,000
Redemption interest expense		$ 593,000
Mortgage loan balance														$ 0							$ 991,692,000
Senior Notes
Debt Instrument [Line Items]
Debt outstanding														1,000,000,000
ESOP Loans
Debt Instrument [Line Items]
Periodic payment terms, balloon payment to be paid			$ 569,000
Debt instrument, periodic payment, principal										$ 635,000
Mortgage loan balance														30,513,000
ESOP Loans | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate			3.00%							2.91%
Capital lease - real estate
Debt Instrument [Line Items]
Debt outstanding														$ 11,564,000							$ 4,388,000
Debt instrument, interest rate, stated percentage													5.00%	5.00%	5.00%	5.00%					5.00%
Mortgage loan balance														$ 11,528,000							$ 4,333,000
Non US lines of credit
Debt Instrument [Line Items]
Debt outstanding														0							17,576,000
Remaining borrowing capacity														10,974,000		$ 15,000
Mortgage loan balance														(33,000)							$ 17,531,000
Proceeds from long-term lines of credit						$ 15,000				$ 10,974,000
Long-term line of credit, revolver outstanding balance														$ 0
Non US lines of credit | LIBOR Rate
Debt Instrument [Line Items]
Interest rate at period end													1.46%	1.46%	1.46%	1.46%
Non US lines of credit | Bankers Acceptance Rate
Debt Instrument [Line Items]
Interest rate at period end													1.56%	1.56%	1.56%	1.56%
Non US lines of credit | Line of Credit One | Northcote Holdings Pty. Ltd
Debt Instrument [Line Items]
Basis spread on variable rate				1.90%
Mortgage loan balance														$ 0
Debt instrument, interest rate, effective percentage													2.05%	2.05%	2.05%	2.05%
Term Loan May 2014 | Northcote Holdings Pty. Ltd
Debt Instrument [Line Items]
Face amount				$ 20,000,000
Debt instrument, periodic payment, principal				1,250,000
Maximum borrowing capacity increase (decrease)				10,000,000
Medium-term Notes | Term Loan Due 2022
Debt Instrument [Line Items]
Periodic payment terms, balloon payment to be paid				$ 9,625,000
Term Loan December 2013 and May 2014 | Northcote Holdings Pty. Ltd
Debt Instrument [Line Items]
Basis spread on variable rate				1.95%
Long-term line of credit														$ 11,761,000	$ 17,125,000		$ 18,375,000	$ 23,375,000
Debt instrument, interest rate, effective percentage													2.09%	2.09%	2.09%	2.09%
Term loan balance change								$ 5,000,000
Mortgages | Ames UK
Debt Instrument [Line Items]
Face amount | £					4,000,000
Periodic payment terms, balloon payment to be paid | £					2,500,000
Debt instrument, periodic payment, principal | £					£ 83,000
Interest rate at period end													1.88%	1.88%	1.88%	1.88%
Forecast | Senior notes due 2028
Debt Instrument [Line Items]
Debt redeemed												$ 150,000,000

SHAREHOLDERS' EQUITY - Narrativ

SHAREHOLDERS' EQUITY - Narrative (Details)

Jul. 29, 2020$ / shares

Jan. 30, 2020shares

Jun. 30, 2020USD ($)$ / sharesshares

Mar. 31, 2020USD ($)senior_executive$ / sharesshares

Dec. 31, 2019USD ($)$ / sharesshares

Sep. 30, 2019$ / shares

Jun. 30, 2019$ / shares

Mar. 31, 2019$ / shares

Dec. 31, 2018$ / shares

Jun. 30, 2020USD ($)$ / sharesshares

Jun. 30, 2019$ / shares

Sep. 30, 2019$ / shares

Aug. 01, 2018USD ($)

Jan. 31, 2018shares

Aug. 03, 2016USD ($)

Class of Stock [Line Items]

Common stock, dividends, per share, cash paid (in dollars per share) | $ / shares

$ 0.0750

$ 0.0725

$ 0.2250

$ 0.2175

Share-based compensation arrangement by share-based payment award, expiration period

10 years

Maximum percentage of exercise price at grant date fair value

100.00%

Number of shares available for grant (in shares)

1,063,148

1,063,148

Stock repurchase program, authorized amount | $

$ 50,000,000

$ 50,000,000

Stock repurchase program, remaining authorized repurchase amount | $

$ 57,955,000

$ 57,955,000

2006 Equity Incentive Plan

Class of Stock [Line Items]

Share based compensation arrangement by share based payment award equity instruments other than options additional grants in future (in shares)

0

0

Restricted Stock and Restricted Stock Units

Class of Stock [Line Items]

Award vesting period

3 years

Equity instruments other than options, grants in period (in shares)

216,523

Equity instruments other than options, granted in period, fair value | $

$ 4,705,000

Equity instruments other than options, grants in period, weighted average grant date fair value (in dollars per share) | $ / shares

$ 21.73

Restricted Stock

Class of Stock [Line Items]

Award vesting period

3 years

Equity instruments other than options, grants in period (in shares)

7,599

804,674

Equity instruments other than options, granted in period, fair value | $

$ 125,000

Equity instruments other than options, grants in period, weighted average grant date fair value (in dollars per share) | $ / shares

$ 16.45

Shares paid for tax withholding for share based compensation (in shares)

340,775

Shares paid for tax withholding for share based compensation, value | $

$ 7,409,000

Shares paid for tax withholding for share based compensation, value per share (in dollars per share) | $ / shares

$ 21.74

Restricted Stock | Minimum

Class of Stock [Line Items]

Award vesting period

3 years

Restricted Stock | Maximum

Class of Stock [Line Items]

Award vesting period

4 years

Restricted Stock | Employees, executives | Tranche One

Class of Stock [Line Items]

Award vesting period

34 months

Equity instruments other than options, grants in period (in shares)

99,772

Equity instruments other than options, granted in period, fair value | $

$ 2,200,000

Equity instruments other than options, grants in period, weighted average grant date fair value (in dollars per share) | $ / shares

$ 22.05

Number of executive officers granted shares | senior_executive

7

Restricted Stock | Employees, executives | Tranche Two

Class of Stock [Line Items]

Award vesting period

4 years

Equity instruments other than options, grants in period (in shares)

660,000

Equity instruments other than options, granted in period, fair value | $

$ 9,534,000

Equity instruments other than options, grants in period, weighted average grant date fair value (in dollars per share) | $ / shares

$ 14.45

Number of executive officers granted shares | senior_executive

2

Award post-vesting holding period

2 years

Restricted Stock | Employees, executives | Minimum | Tranche Two

Class of Stock [Line Items]

Amount of shares that can vest based on attainment of minimum performance condition (in shares)

480,000

Restricted Stock | Employees, executives | Maximum | Tranche Two

Class of Stock [Line Items]

Amount of shares that can vest based on attainment of minimum performance condition (in shares)

660,000

Restricted Stock | Non-employees, directors

Class of Stock [Line Items]

Award vesting period

3 years

Equity instruments other than options, granted in period, fair value | $

$ 990,000

Equity instruments other than options, grants in period, weighted average grant date fair value (in dollars per share) | $ / shares

$ 22.05

Restricted Stock | Non-employees, directors | Tranche One

Class of Stock [Line Items]

Equity instruments other than options, grants in period (in shares)

44,902

Restricted Stock Units

Class of Stock [Line Items]

Shares paid for tax withholding for share based compensation (in shares)

3,307

Shares paid for tax withholding for share based compensation, value | $

$ 70,000

Shares paid for tax withholding for share based compensation, value per share (in dollars per share) | $ / shares

$ 21.22

Incentive Plan

Class of Stock [Line Items]

Number of shares authorized for award (in shares)

5,050,000

5,050,000

1,000,000

Number of additional shares authorized for award (in shares)

1,700,000

Incentive Plan | Incentive Stock Options

Class of Stock [Line Items]

Number of shares authorized for award (in shares)

600,000

600,000

Quarterly Dividend

Class of Stock [Line Items]

Common stock, dividends, per share, cash paid (in dollars per share) | $ / shares

$ 0.075

$ 0.075

$ 0.075

$ 0.0725

$ 0.0725

$ 0.0725

$ 0.0725

$ 0.225

$ 0.29

Subsequent Event | Quarterly Dividend

Class of Stock [Line Items]

Dividends declared, amount per share (in dollars per share) | $ / shares

$ 0.075

SHAREHOLDERS' EQUITY SHAREHOL_2

SHAREHOLDERS' EQUITY SHAREHOLDERS EQUITY - Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Stockholders' Equity Note [Abstract]
Restricted stock	$ 3,930	$ 3,332	$ 10,742	$ 9,687
ESOP	577	715	2,067	1,860
Total stock based compensation	$ 4,507	$ 4,047	$ 12,809	$ 11,547

EARNINGS PER SHARE (EPS) (Detai

EARNINGS PER SHARE (EPS) (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Common shares outstanding	47,425	46,801	47,425	46,801
Unallocated ESOP shares	(2,108)	(2,314)	(2,108)	(2,314)
Non-vested restricted stock	(3,555)	(3,426)	(3,555)	(3,426)
Impact of weighted average shares	(50)	(94)	(279)	(173)
Weighted average shares outstanding - basic	41,712	40,967	41,483	40,888
Incremental shares from stock based compensation	2,062	2,197	2,335	1,761
Weighted average shares outstanding - diluted	43,774	43,164	43,818	42,649

BUSINESS SEGMENTS - Revenues (D

BUSINESS SEGMENTS - Revenues (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2020USD ($)segment	Jun. 30, 2019USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			3
Revenue	$ 632,061	$ 574,970	$ 1,746,849	$ 1,635,125
Consumer and Professional Products
Segment Reporting Information [Line Items]
Revenue	328,929	273,710	844,917	777,916
Home and Building Products
Segment Reporting Information [Line Items]
Revenue	219,164	221,521	670,374	631,615
Defense Electronics
Segment Reporting Information [Line Items]
Revenue	$ 83,968	$ 79,739	$ 231,558	$ 225,594

BUSINESS SEGMENTS - Disaggregat

BUSINESS SEGMENTS - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 632,061	$ 574,970	$ 1,746,849	$ 1,635,125
United States
Disaggregation of Revenue [Line Items]
Revenue	498,060	449,816	1,376,854	1,282,423
Europe
Disaggregation of Revenue [Line Items]
Revenue	37,984	34,081	85,219	81,136
Canada
Disaggregation of Revenue [Line Items]
Revenue	28,972	28,968	90,171	90,830
Australia
Disaggregation of Revenue [Line Items]
Revenue	48,626	36,830	142,681	124,656
All other countries
Disaggregation of Revenue [Line Items]
Revenue	18,419	25,275	51,924	56,080
Consumer and Professional Products
Disaggregation of Revenue [Line Items]
Revenue	328,929	273,710	844,917	777,916
Consumer and Professional Products | United States
Disaggregation of Revenue [Line Items]
Revenue	232,544	193,948	584,114	541,309
Consumer and Professional Products | Europe
Disaggregation of Revenue [Line Items]
Revenue	29,267	25,663	60,609	53,871
Consumer and Professional Products | Canada
Disaggregation of Revenue [Line Items]
Revenue	18,231	16,246	53,527	54,456
Consumer and Professional Products | Australia
Disaggregation of Revenue [Line Items]
Revenue	47,614	35,829	140,874	121,617
Consumer and Professional Products | All other countries
Disaggregation of Revenue [Line Items]
Revenue	1,273	2,024	5,793	6,663
Consumer and Professional Products | Residential repair and remodel
Disaggregation of Revenue [Line Items]
Revenue	50,709	35,416	126,304	101,015
Consumer and Professional Products | Retail
Disaggregation of Revenue [Line Items]
Revenue	177,271	148,596	441,795	424,537
Consumer and Professional Products | Residential new construction
Disaggregation of Revenue [Line Items]
Revenue	14,487	15,345	44,344	43,162
Consumer and Professional Products | Industrial
Disaggregation of Revenue [Line Items]
Revenue	9,303	12,880	30,461	34,054
Consumer and Professional Products | International excluding North America
Disaggregation of Revenue [Line Items]
Revenue	77,159	61,473	202,013	175,148
Home and Building Products
Disaggregation of Revenue [Line Items]
Revenue	219,164	221,521	670,374	631,615
Home and Building Products | United States
Disaggregation of Revenue [Line Items]
Revenue	209,222	206,489	635,232	592,261
Home and Building Products | Europe
Disaggregation of Revenue [Line Items]
Revenue	81	31	109	77
Home and Building Products | Canada
Disaggregation of Revenue [Line Items]
Revenue	7,729	9,867	26,849	27,832
Home and Building Products | Australia
Disaggregation of Revenue [Line Items]
Revenue	0	163	0	613
Home and Building Products | All other countries
Disaggregation of Revenue [Line Items]
Revenue	2,132	4,971	8,184	10,832
Home and Building Products | Residential repair and remodel
Disaggregation of Revenue [Line Items]
Revenue	109,876	112,730	332,681	316,368
Home and Building Products | Commercial construction
Disaggregation of Revenue [Line Items]
Revenue	84,521	83,382	262,708	243,939
Home and Building Products | Residential new construction
Disaggregation of Revenue [Line Items]
Revenue	24,767	25,409	74,985	71,308
Defense Electronics
Disaggregation of Revenue [Line Items]
Revenue	83,968	79,739	231,558	225,594
Defense Electronics | United States
Disaggregation of Revenue [Line Items]
Revenue	56,294	49,379	157,508	148,853
Defense Electronics | Europe
Disaggregation of Revenue [Line Items]
Revenue	8,636	8,387	24,501	27,188
Defense Electronics | Canada
Disaggregation of Revenue [Line Items]
Revenue	3,012	2,855	9,795	8,542
Defense Electronics | Australia
Disaggregation of Revenue [Line Items]
Revenue	1,012	838	1,807	2,426
Defense Electronics | All other countries
Disaggregation of Revenue [Line Items]
Revenue	15,014	18,280	37,947	38,585
Defense Electronics | U.S. Government
Disaggregation of Revenue [Line Items]
Revenue	54,802	46,579	151,126	138,515
Defense Electronics | International
Disaggregation of Revenue [Line Items]
Revenue	24,779	30,120	68,333	75,348
Defense Electronics | Commercial
Disaggregation of Revenue [Line Items]
Revenue	$ 4,387	$ 3,040	$ 12,099	$ 11,731

BUSINESS SEGMENTS - Segment EBI

BUSINESS SEGMENTS - Segment EBITDA (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Adjusted EBITDA	$ 69,456	$ 53,068	$ 172,579	$ 140,930
Net interest expense	(16,585)	(17,087)	(49,096)	(50,723)
Depreciation and amortization	(15,523)	(15,595)	(47,067)	(46,172)
Loss from debt extinguishment	(1,235)	0	(7,925)	0
Income before taxes from continuing operations	34,480	20,386	54,360	44,035
Operating Segments
Segment Reporting Information [Line Items]
Adjusted EBITDA	80,536	65,101	207,548	175,435
Depreciation and amortization	(15,370)	(15,453)	(46,611)	(45,757)
Operating Segments | Consumer and Professional Products
Segment Reporting Information [Line Items]
Adjusted EBITDA	37,115	23,970	84,068	73,151
Depreciation and amortization	(8,197)	(8,158)	(24,650)	(24,148)
Operating Segments | Home and Building Products
Segment Reporting Information [Line Items]
Adjusted EBITDA	39,299	33,851	110,635	85,283
Depreciation and amortization	(4,507)	(4,626)	(13,975)	(13,683)
Operating Segments | Defense Electronics
Segment Reporting Information [Line Items]
Adjusted EBITDA	4,122	7,280	12,845	17,001
Depreciation and amortization	(2,666)	(2,669)	(7,986)	(7,926)
Segment Reconciling Items
Segment Reporting Information [Line Items]
Adjusted EBITDA	(11,080)	(12,033)	(34,969)	(34,505)
Net interest expense	(16,585)	(17,087)	(49,096)	(50,723)
Depreciation and amortization	(15,523)	(15,595)	(47,067)	(46,172)
Loss from debt extinguishment	(1,235)	0	(7,925)	0
Restructuring charges	(1,633)	0	(11,171)	0
Acquisition costs	$ 0	$ 0	$ (2,960)	$ 0

BUSINESS SEGMENTS - Depreciatio

BUSINESS SEGMENTS - Depreciation, Amortization and Capital Expenditures (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
DEPRECIATION and AMORTIZATION	$ 15,523	$ 15,595	$ 47,067	$ 46,172
CAPITAL EXPENDITURES	12,232	10,376	34,751	27,794
Operating Segments
Segment Reporting Information [Line Items]
DEPRECIATION and AMORTIZATION	15,370	15,453	46,611	45,757
CAPITAL EXPENDITURES	12,207	10,339	34,444	27,547
Corporate
Segment Reporting Information [Line Items]
DEPRECIATION and AMORTIZATION	153	142	456	415
CAPITAL EXPENDITURES	25	37	307	247
Consumer and Professional Products | Operating Segments
Segment Reporting Information [Line Items]
DEPRECIATION and AMORTIZATION	8,197	8,158	24,650	24,148
CAPITAL EXPENDITURES	7,029	3,187	14,561	11,327
Home and Building Products | Operating Segments
Segment Reporting Information [Line Items]
DEPRECIATION and AMORTIZATION	4,507	4,626	13,975	13,683
CAPITAL EXPENDITURES	3,640	5,088	15,135	10,423
Defense Electronics | Operating Segments
Segment Reporting Information [Line Items]
DEPRECIATION and AMORTIZATION	2,666	2,669	7,986	7,926
CAPITAL EXPENDITURES	$ 1,538	$ 2,064	$ 4,748	$ 5,797

BUSINESS SEGMENTS - Summary of

BUSINESS SEGMENTS - Summary of Segment Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Continuing assets	$ 2,302,183	$ 2,071,730
Assets of discontinued operations	8,037	3,209
Total Assets	2,310,220	2,074,939
Operating Segments
Segment Reporting Information [Line Items]
Continuing assets	2,196,840	1,989,301
Operating Segments | Consumer and Professional Products
Segment Reporting Information [Line Items]
Continuing assets	1,269,540	1,070,510
Operating Segments | Home and Building Products
Segment Reporting Information [Line Items]
Continuing assets	592,038	571,216
Operating Segments | Defense Electronics
Segment Reporting Information [Line Items]
Continuing assets	335,262	347,575
Corporate
Segment Reporting Information [Line Items]
Continuing assets	$ 105,343	$ 82,429

EMPLOYEE BENEFIT PLANS (Details

EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Retirement Benefits [Abstract]
Interest cost	$ 1,148	$ 1,570	$ 3,450	$ 4,711
Expected return on plan assets	(2,585)	(2,583)	(7,757)	(7,749)
Amortization:
Prior service cost	3	4	11	11
Recognized actuarial loss	1,042	222	3,126	666
Net periodic expense (income)	$ (392)	$ (787)	$ (1,170)	$ (2,361)

RECENT ACCOUNTING PRONOUNCEME_2

RECENT ACCOUNTING PRONOUNCEMENTS (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
		Dec. 31, 2018	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Oct. 01, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Oct. 01, 2018	Sep. 30, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
ROU assets			$ 154,955			$ 163,552
Lease liabilities			160,668			$ 163,676
Cumulative impact of adoption		$ (471,561)	$ (508,455)	$ (476,454)	$ (494,693)		$ (477,763)	$ (488,165)	$ (474,284)		$ (474,391)
Accounting Standards Update [Extensible List]		us-gaap:AccountingStandardsUpdate201409Member	us-gaap:AccountingStandardsUpdate201602Member
Retained Earnings
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cumulative impact of adoption		$ (550,460)	$ (591,482)	$ (573,209)	$ (575,736)		$ (568,516)	$ (555,780)	$ (545,600)		(550,523)
Cumulative Effect, Period of Adoption, Adjustment
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cumulative impact of adoption	[1]										5,673
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cumulative impact of adoption	[1]									$ 5,673	$ 5,673
[1]	See Note 14 - Recent Accounting Pronouncements and Note 3 - Revenue for additional information.

DISCONTINUED OPERATIONS - Narra

DISCONTINUED OPERATIONS - Narrative (Details) - USD ($)	3 Months Ended			9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Feb. 06, 2018	Sep. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Claims dispute settlement related to PPC divestiture			$ 11,000,000
Claims dispute settlement related to PPC divestiture, net of tax			$ 7,646,000
Payment of claims dispute settlement		$ 9,500,000		$ 0	$ 9,500,000
Plastics
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration after sale adjustments						$ 465,000,000
Consideration						$ 465,000,000
Installation Services
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	$ 0	$ 0		$ 0	$ 0
Clopay Services Corporation
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Environmental exit costs, costs accrued to date							$ 5,700,000

DISCONTINUED OPERATIONS - Balan

DISCONTINUED OPERATIONS - Balance Sheets Information (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Sep. 30, 2019
Assets of discontinued operations:
Prepaid and other current assets	$ 1,951	$ 321
Other long-term assets	6,086	2,888
Total assets of discontinued operations	8,037	3,209
Liabilities of discontinued operations:
Accrued liabilities, current	3,730	4,333
Other long-term liabilities	6,281	3,331
Total liabilities of discontinued operations	$ 10,011	$ 7,664

RESTRUCTURING CHARGES - Narrati

RESTRUCTURING CHARGES - Narrative (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Jun. 30, 2020USD ($)position
Restructuring Cost and Reserve [Line Items]
Restructuring charges, pre-tax	$ 1,633			$ 11,171
Restructuring costs				6,479
Non-cash charges		$ 532	$ 4,160	4,692
Impairment charge, operating lease				1,968
Impairment charge, leasehold improvements				671
Inventory write down				304
Impairment charge, manufacturing assets				$ 1,749
Reduction of headcount | position				179
One-time charges
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	35,000			$ 35,000
Capital investments
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	40,000			40,000
Cash charges
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	16,000			16,000
Personnel related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	12,000			12,000
Restructuring charges, pre-tax	1,050			4,842
Restructuring costs				4,842
Non-cash charges		0	0
Facilities, exit costs and other
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	4,000			4,000
Restructuring charges, pre-tax	583			1,637
Restructuring costs				1,637
Non-cash charges		$ 0	$ 0
Asset write-downs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	$ 19,000			$ 19,000

RESTRUCTURING CHARGES - Summary

RESTRUCTURING CHARGES - Summary of the Restructuring and Other Related Charges (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2020	Jun. 30, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,633	$ 11,171
Personnel related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,050	4,842
Facilities, exit costs and other
Restructuring Cost and Reserve [Line Items]
Restructuring charges	583	1,637
Non-cash facility and other
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	4,692
Cost of sales
Restructuring Cost and Reserve [Line Items]
Restructuring charges	20	4,096
Selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,613	$ 7,075

RESTRUCTURING CHARGES - Summa_2

RESTRUCTURING CHARGES - Summary of Accrued Liability for the Restructuring and Related Charges (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
Restructuring Reserve [Roll Forward]
Accrued liability beginning balance	$ 2,130	$ 1,513	$ 0	$ 0
Restructuring charges	1,633	3,104	6,434
Cash payments	(1,208)	(1,955)	(761)
Non-cash charges		(532)	(4,160)	(4,692)
Accrued liability ending balance	2,555	2,130	1,513	2,555
Personnel related costs
Restructuring Reserve [Roll Forward]
Accrued liability beginning balance	2,130	1,513	0	0
Restructuring charges	1,050	1,658	2,134
Cash payments	(828)	(1,041)	(621)
Non-cash charges		0	0
Accrued liability ending balance	2,352	2,130	1,513	2,352
Facilities, exit costs and other
Restructuring Reserve [Roll Forward]
Accrued liability beginning balance	0	0	0	0
Restructuring charges	583	914	140
Cash payments	(380)	(914)	(140)
Non-cash charges		0	0
Accrued liability ending balance	203	0	0	203
Facility and Other Costs
Restructuring Reserve [Roll Forward]
Accrued liability beginning balance	0	0	0	0
Restructuring charges	0	532	4,160
Cash payments	0	0	0
Non-cash charges		(532)	(4,160)
Accrued liability ending balance	$ 0	$ 0	$ 0	$ 0

OTHER INCOME (EXPENSE) (Details

OTHER INCOME (EXPENSE) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Other Income and Expenses [Abstract]
Foreign currency transaction gain (loss), before tax	$ 72	$ 150	$ 441	$ 535
Net periodic benefit income	392	787	1,170	2,361
Investment income, net	$ 294	$ (14)	145	$ 18
Contract award income			$ 700

WARRANTY LIABILITY - Narrative

WARRANTY LIABILITY - Narrative (Details)	9 Months Ended
	Jun. 30, 2020
DE | Minimum
Product Warranty Liability [Line Items]
Product warranty period	1 year
DE | Maximum
Product Warranty Liability [Line Items]
Product warranty period	2 years
HBP | Minimum
Product Warranty Liability [Line Items]
Product warranty period	1 year
HBP | Maximum
Product Warranty Liability [Line Items]
Product warranty period	10 years
CPP
Product Warranty Liability [Line Items]
Product warranty period	90 days

WARRANTY LIABILITY - Changes in

WARRANTY LIABILITY - Changes in Warrant Liability (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]
Balance, beginning of period	$ 7,789	$ 8,011	$ 7,894	$ 8,174
Warranties issued and changes in estimated pre-existing warranties	5,773	3,780	14,000	12,541
Actual warranty costs incurred	(3,661)	(4,063)	(11,993)	(12,987)
Balance, end of period	$ 9,901	$ 7,728	$ 9,901	$ 7,728

OTHER COMPREHENSIVE INCOME (L_3

OTHER COMPREHENSIVE INCOME (LOSS) - Summary of OCI (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2020	Jun. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), pre-tax	$ 8,172			$ (1,055)			$ 818	$ (3,541)
Total other comprehensive income (loss), tax	530			20			(109)	(64)
Total other comprehensive income (loss), net of taxes	8,702	$ (14,834)	$ 6,841	(1,035)	$ 2,880	$ (5,450)	709	(3,605)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), pre-tax	9,508			(1,092)			(493)	(3,943)
Total other comprehensive income (loss), tax	0			0			0	0
Total other comprehensive income (loss), net of taxes	9,508			(1,092)			(493)	(3,943)
Pension and other defined benefit plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), pre-tax	1,443			236			3,137	708
Total other comprehensive income (loss), tax	(304)			(52)			(657)	(156)
Total other comprehensive income (loss), net of taxes	1,139			184			2,480	552
Cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), pre-tax	(2,779)			(199)			(1,826)	(306)
Total other comprehensive income (loss), tax	834			72			548	92
Total other comprehensive income (loss), net of taxes	$ (1,945)			$ (127)			$ (1,278)	$ (214)

OTHER COMPREHENSIVE INCOME (L_4

OTHER COMPREHENSIVE INCOME (LOSS) - AOCI (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	$ 508,455	$ 476,454	$ 494,693	$ 477,763	$ 488,165	$ 474,284	$ 471,561	$ 474,391
Foreign currency translation adjustments
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	(31,777)			(31,284)
Pension and other defined benefit plans
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	(32,334)			(34,814)
Cash flow hedges
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	(1,096)			182
Accumulated other comprehensive income (loss), attributable to parent
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	$ (65,207)	$ (73,909)	$ (59,075)	$ (65,916)	$ (37,717)	$ (36,682)	$ (39,562)	$ (34,112)

OTHER COMPREHENSIVE INCOME (L_5

OTHER COMPREHENSIVE INCOME (LOSS) - Amounts Reclassified from AOCI (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2020	Jun. 30, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total gain (loss)	$ 34,480			$ 20,386			$ 54,360	$ 44,035
Tax benefit (expense)	(12,649)			(6,258)			(21,022)	(14,664)
Net income	21,831	$ 895	$ 10,612	13,595	$ (1,156)	$ 8,753	33,338	21,192
Pension and other defined benefit plans | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total gain (loss)	(1,045)			(226)			(3,137)	(677)
Cash flow hedges | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total gain (loss)	556			663			1,550	1,597
Accumulated other comprehensive income (loss), attributable to parent | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total gain (loss)	(489)			437			(1,587)	920
Tax benefit (expense)	102			(92)			333	(193)
Net income	$ (387)			$ 345			$ (1,254)	$ 727

LEASES - Narrative (Details)

LEASES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Dec. 31, 2018	Jun. 30, 2020	Oct. 01, 2019
Leases [Abstract]
ROU assets		$ 154,955	$ 163,552
Lease liabilities		160,668	$ 163,676
Impairment charge, operating lease		1,968
Impairment charge, leasehold improvements		$ 671
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201409Member	us-gaap:AccountingStandardsUpdate201602Member

LEASES - Schedule of Lease Cost

LEASES - Schedule of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2020	Jun. 30, 2020
Lease Cost
Fixed	$ 9,909	$ 28,648
Variable	2,032	5,608
Short-term	1,280	4,103
Total	$ 13,221	$ 38,359

LEASES - Supplemental Cash Flow

LEASES - Supplemental Cash Flow Information (Details) $ in Thousands	9 Months Ended
	Jun. 30, 2020USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 32,882
Financing cash flows from finance leases	3,202
Total	$ 36,084

LEASES - Summary of Supplementa

LEASES - Summary of Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Oct. 01, 2019
Operating Leases:
Operating right-of-use assets	$ 154,955	$ 163,552
Lease Liabilities:
Current portion of operating lease liabilities	29,018
Long-term operating lease liabilities	131,650
Total operating lease liabilities	160,668	$ 163,676
Finance Leases:
Property, plant and equipment, net	$ 13,318
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentNet
Lease Liabilities:
Lease liabilities, notes payable and current portion of long-term debt	$ 3,427
Lease liabilities, long-term debt, net	9,725
Total financing lease liabilities	$ 13,152
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:LongTermDebtCurrent
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:LongTermDebtNoncurrent
Accumulated depreciation	$ 1,464

LEASES - Summary of Future Matu

LEASES - Summary of Future Maturities of Lease Payments for Operating Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Oct. 01, 2019
Operating Leases
2020	$ 8,794
2021	34,624
2022	29,658
2023	23,123
2024	16,904
2025	14,773
Thereafter	70,304
Total lease payments	198,180
Less: Imputed Interest	(37,512)
Present value of lease liabilities	160,668	$ 163,676
Finance Leases
2020	1,259
2021	4,252
2022	2,673
2023	2,361
2024	2,101
2025	1,382
Thereafter	0
Total lease payments	14,028
Less: Imputed Interest	(876)
Present value of lease liabilities	$ 13,152

LEASES - Summary of Maturities

LEASES - Summary of Maturities of Operating Lease Liabilities (Details) $ in Thousands	Sep. 30, 2019USD ($)
Operating Leases
2020	$ 35,176
2021	30,730
2022	26,119
2023	20,008
2024	14,198
Thereafter	78,105
Total	$ 204,336

LEASES - Weighted Average Lease

LEASES - Weighted Average Lease Terms and Discount Rates (Details)	Jun. 30, 2020
Weighted-average remaining lease term (years)
Operating leases	8 years 3 months 18 days
Finance Leases	2 years 3 months 18 days
Weighted-average discount rate
Operating Leases	5.17%
Finance Leases	4.36%

COMMITMENTS AND CONTINGENCIES (

COMMITMENTS AND CONTINGENCIES (Details) $ in Thousands	Jun. 30, 2011USD ($)
Commitments and Contingencies Disclosure [Abstract]
Net capital cost value in proposed remedial action plan	$ 10,000

CONSOLIDATING GUARANTOR AND N_3

CONSOLIDATING GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION - Narrative (Details)	9 Months Ended
	Jun. 30, 2020
Condensed Financial Statements, Captions [Line Items]
Maximum percentage of segment adjusted EBITDA to business EBITDA	50.00%
Clopay Corporation, Telephonics Corporation, The AMES Companies, Inc., ATT Southern LLC, Clopay Ames Holding Corp., ClosetMaid, LLC, CornellCookson, LLC and Cornell Real Estate Holdings, LLC
Condensed Financial Statements, Captions [Line Items]
Noncontrolling interest, ownership percentage by parent	100.00%

CONSOLIDATING GUARANTOR AND N_4

CONSOLIDATING GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION - Condensed Consolidating Balance Sheets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Oct. 01, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018
CURRENT ASSETS
Cash and equivalents	$ 71,999				$ 72,377
Accounts receivable, net of allowances	359,464				264,450
Contract costs and recognized income not yet billed, net of progress payments	92,143				105,111
Inventories, net	411,028				442,121
Prepaid and other current assets	51,365				40,799
Assets of discontinued operations	1,951				321
Total Current Assets	987,950				925,179
PROPERTY, PLANT AND EQUIPMENT, net	335,318
PROPERTY, PLANT AND EQUIPMENT, net					337,326
OPERATING LEASE RIGHT-OF-USE ASSETS	154,955			$ 163,552
GOODWILL	439,667				437,067
INTANGIBLE ASSETS, net	354,384				356,639
INTERCOMPANY RECEIVABLE	0				0
EQUITY INVESTMENTS IN SUBSIDIARIES	0				0
OTHER ASSETS	31,860				15,840
ASSETS OF DISCONTINUED OPERATIONS	6,086				2,888
Total Assets	2,310,220				2,074,939
CURRENT LIABILITIES
Notes payable and current portion of long-term debt	9,235				10,525
Accounts payable and accrued liabilities	394,188				375,241
Current portion of operating lease liabilities	29,018
Liabilities of discontinued operations	3,730				4,333
Total Current Liabilities	436,171				390,099
LONG-TERM DEBT, net	1,123,365				1,093,749
LONG-TERM OPERATING LEASE LIABILITIES	131,650
INTERCOMPANY PAYABLES	0				0
OTHER LIABILITIES	104,298				109,997
LIABILITIES OF DISCONTINUED OPERATIONS	6,281				3,331
Total Liabilities	1,801,765				1,597,176
SHAREHOLDERS’ EQUITY	508,455	$ 476,454	$ 494,693		477,763	$ 488,165	$ 474,284	$ 471,561	$ 474,391
Total Liabilities and Shareholders’ Equity	2,310,220				2,074,939
Reportable Legal Entities | Parent Company
CURRENT ASSETS
Cash and equivalents	4,727				1,649
Accounts receivable, net of allowances	0				0
Contract costs and recognized income not yet billed, net of progress payments	0				0
Inventories, net	0				0
Prepaid and other current assets	19,519				8,238
Assets of discontinued operations	0				0
Total Current Assets	24,246				9,887
PROPERTY, PLANT AND EQUIPMENT, net	1,232
PROPERTY, PLANT AND EQUIPMENT, net					1,184
OPERATING LEASE RIGHT-OF-USE ASSETS	9,633
GOODWILL	0				0
INTANGIBLE ASSETS, net	93				93
INTERCOMPANY RECEIVABLE	16,555				5,834
EQUITY INVESTMENTS IN SUBSIDIARIES	1,702,746				1,628,031
OTHER ASSETS	12,228				8,182
ASSETS OF DISCONTINUED OPERATIONS	0				0
Total Assets	1,766,733				1,653,211
CURRENT LIABILITIES
Notes payable and current portion of long-term debt	0				0
Accounts payable and accrued liabilities	58,619				41,796
Current portion of operating lease liabilities	1,842
Liabilities of discontinued operations	0				0
Total Current Liabilities	60,461				41,796
LONG-TERM DEBT, net	1,087,135				1,040,449
LONG-TERM OPERATING LEASE LIABILITIES	8,886
INTERCOMPANY PAYABLES	77,139				71,634
OTHER LIABILITIES	24,657				21,569
LIABILITIES OF DISCONTINUED OPERATIONS	0				0
Total Liabilities	1,258,278				1,175,448
SHAREHOLDERS’ EQUITY	508,455				477,763
Total Liabilities and Shareholders’ Equity	1,766,733				1,653,211
Reportable Legal Entities | Guarantor Companies
CURRENT ASSETS
Cash and equivalents	19,697				25,217
Accounts receivable, net of allowances	307,625				227,069
Contract costs and recognized income not yet billed, net of progress payments	89,526				104,109
Inventories, net	347,703				372,839
Prepaid and other current assets	24,144				25,754
Assets of discontinued operations	0				0
Total Current Assets	788,695				754,988
PROPERTY, PLANT AND EQUIPMENT, net	289,224
PROPERTY, PLANT AND EQUIPMENT, net					289,282
OPERATING LEASE RIGHT-OF-USE ASSETS	124,566
GOODWILL	375,734				375,734
INTANGIBLE ASSETS, net	219,056				224,275
INTERCOMPANY RECEIVABLE	679,666				864,884
EQUITY INVESTMENTS IN SUBSIDIARIES	766,863				581,438
OTHER ASSETS	39,491				24,635
ASSETS OF DISCONTINUED OPERATIONS	0				0
Total Assets	3,283,295				3,115,236
CURRENT LIABILITIES
Notes payable and current portion of long-term debt	2,973				3,075
Accounts payable and accrued liabilities	426,260				266,411
Current portion of operating lease liabilities	22,229
Liabilities of discontinued operations	0				0
Total Current Liabilities	451,462				269,486
LONG-TERM DEBT, net	10,258				3,119
LONG-TERM OPERATING LEASE LIABILITIES	106,552
INTERCOMPANY PAYABLES	254,479				457,265
OTHER LIABILITIES	77,228				81,582
LIABILITIES OF DISCONTINUED OPERATIONS	0				0
Total Liabilities	899,979				811,452
SHAREHOLDERS’ EQUITY	2,383,316				2,303,784
Total Liabilities and Shareholders’ Equity	3,283,295				3,115,236
Reportable Legal Entities | Non-Guarantor Companies
CURRENT ASSETS
Cash and equivalents	47,575				45,511
Accounts receivable, net of allowances	217,590				38,580
Contract costs and recognized income not yet billed, net of progress payments	2,617				1,002
Inventories, net	63,903				69,540
Prepaid and other current assets	5,068				6,951
Assets of discontinued operations	1,951				321
Total Current Assets	338,704				161,905
PROPERTY, PLANT AND EQUIPMENT, net	44,862
PROPERTY, PLANT AND EQUIPMENT, net					46,860
OPERATING LEASE RIGHT-OF-USE ASSETS	20,756
GOODWILL	63,933				61,333
INTANGIBLE ASSETS, net	135,235				132,271
INTERCOMPANY RECEIVABLE	84,671				75,684
EQUITY INVESTMENTS IN SUBSIDIARIES	3,154,553				3,233,038
OTHER ASSETS	(5,638)				(2,352)
ASSETS OF DISCONTINUED OPERATIONS	6,086				2,888
Total Assets	3,843,162				3,711,627
CURRENT LIABILITIES
Notes payable and current portion of long-term debt	6,262				7,450
Accounts payable and accrued liabilities	72,451				68,390
Current portion of operating lease liabilities	4,947
Liabilities of discontinued operations	3,730				4,333
Total Current Liabilities	87,390				80,173
LONG-TERM DEBT, net	25,972				50,181
LONG-TERM OPERATING LEASE LIABILITIES	16,212
INTERCOMPANY PAYABLES	467,463				444,557
OTHER LIABILITIES	10,242				15,017
LIABILITIES OF DISCONTINUED OPERATIONS	6,281				3,331
Total Liabilities	613,560				593,259
SHAREHOLDERS’ EQUITY	3,229,602				3,118,368
Total Liabilities and Shareholders’ Equity	3,843,162				3,711,627
Elimination
CURRENT ASSETS
Cash and equivalents	0				0
Accounts receivable, net of allowances	(165,751)				(1,199)
Contract costs and recognized income not yet billed, net of progress payments	0				0
Inventories, net	(578)				(258)
Prepaid and other current assets	2,634				(144)
Assets of discontinued operations	0				0
Total Current Assets	(163,695)				(1,601)
PROPERTY, PLANT AND EQUIPMENT, net	0
PROPERTY, PLANT AND EQUIPMENT, net					0
OPERATING LEASE RIGHT-OF-USE ASSETS	0
GOODWILL	0				0
INTANGIBLE ASSETS, net	0				0
INTERCOMPANY RECEIVABLE	(780,892)				(946,402)
EQUITY INVESTMENTS IN SUBSIDIARIES	(5,624,162)				(5,442,507)
OTHER ASSETS	(14,221)				(14,625)
ASSETS OF DISCONTINUED OPERATIONS	0				0
Total Assets	(6,582,970)				(6,405,135)
CURRENT LIABILITIES
Notes payable and current portion of long-term debt	0				0
Accounts payable and accrued liabilities	(163,142)				(1,356)
Current portion of operating lease liabilities	0
Liabilities of discontinued operations	0				0
Total Current Liabilities	(163,142)				(1,356)
LONG-TERM DEBT, net	0				0
LONG-TERM OPERATING LEASE LIABILITIES	0
INTERCOMPANY PAYABLES	(799,081)				(973,456)
OTHER LIABILITIES	(7,829)				(8,171)
LIABILITIES OF DISCONTINUED OPERATIONS	0				0
Total Liabilities	(970,052)				(982,983)
SHAREHOLDERS’ EQUITY	(5,612,918)				(5,422,152)
Total Liabilities and Shareholders’ Equity	$ (6,582,970)				$ (6,405,135)

CONSOLIDATING GUARANTOR AND N_5

CONSOLIDATING GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION - Condensed Consolidating Statements of Operations and Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2020	Jun. 30, 2019
Condensed Income Statements, Captions [Line Items]
Revenue	$ 632,061			$ 574,970			$ 1,746,849	$ 1,635,125
Cost of goods and services	467,058			420,487			1,279,893	1,200,092
Gross profit	165,003			154,483			466,956	435,033
Selling, general and administrative expenses	113,509			117,989			357,774	343,526
Income from operations	51,494			36,494			109,182	91,507
Other income (expense)
Interest income (expense), net	(16,585)			(17,087)			(49,096)	(50,723)
Loss from debt extinguishment, net	(1,235)			0			(7,925)	0
Other, net	806			979			2,199	3,251
Total other expense, net	(17,014)			(16,108)			(54,822)	(47,472)
Income before taxes from continuing operations	34,480			20,386			54,360	44,035
Provision (benefit) for income taxes	12,649			6,258			21,022	14,664
Income (loss) before equity in net income of subsidiaries	21,831			14,128			33,338	29,371
Equity in net income (loss) of subsidiaries	0			0			0	0
Income from continuing operations	21,831			14,128			33,338	29,371
Loss from operations of discontinued operations	0			0			0	(11,000)
Provision (benefit) for income taxes	0			533			0	(2,821)
Loss from discontinued operations	0			(533)			0	(8,179)
Net income	21,831	$ 895	$ 10,612	13,595	$ (1,156)	$ 8,753	33,338	21,192
Comprehensive income (loss)	30,533			12,560			34,047	17,587
Reportable Legal Entities | Parent Company
Condensed Income Statements, Captions [Line Items]
Revenue	0			0			0	0
Cost of goods and services	0			0			0	0
Gross profit	0			0			0	0
Selling, general and administrative expenses	5,229			5,342			19,169	15,651
Income from operations	(5,229)			(5,342)			(19,169)	(15,651)
Other income (expense)
Interest income (expense), net	(7,013)			(7,171)			(20,217)	(20,806)
Loss from debt extinguishment, net	(1,235)						(7,925)
Other, net	126			4,963			(389)	4,228
Total other expense, net	(8,122)			(2,208)			(28,531)	(16,578)
Income before taxes from continuing operations	(13,351)			(7,550)			(47,700)	(32,229)
Provision (benefit) for income taxes	(3,533)			(4,815)			(17,355)	(12,592)
Income (loss) before equity in net income of subsidiaries	(9,818)			(2,735)			(30,345)	(19,637)
Equity in net income (loss) of subsidiaries	31,649			16,330			63,683	40,829
Income from continuing operations				13,595				21,192
Loss from operations of discontinued operations				0				0
Provision (benefit) for income taxes				0				0
Loss from discontinued operations				0				0
Net income	21,831			13,595			33,338	21,192
Comprehensive income (loss)	30,533			12,560			34,047	17,587
Reportable Legal Entities | Guarantor Companies
Condensed Income Statements, Captions [Line Items]
Revenue	515,083			470,228			1,418,975	1,352,211
Cost of goods and services	385,717			350,197			1,058,556	1,013,676
Gross profit	129,366			120,031			360,419	338,535
Selling, general and administrative expenses	85,512			85,885			264,698	255,674
Income from operations	43,854			34,146			95,721	82,861
Other income (expense)
Interest income (expense), net	(9,537)			(9,048)			(28,916)	(27,306)
Loss from debt extinguishment, net	0						0
Other, net	(2,852)			(15,918)			(6,870)	(14,102)
Total other expense, net	(12,389)			(24,966)			(35,786)	(41,408)
Income before taxes from continuing operations	31,465			9,180			59,935	41,453
Provision (benefit) for income taxes	10,843			9,124			22,648	20,390
Income (loss) before equity in net income of subsidiaries	20,622			56			37,287	21,063
Equity in net income (loss) of subsidiaries	10,920			15,641			26,457	33,337
Income from continuing operations				15,697				54,400
Loss from operations of discontinued operations				0				0
Provision (benefit) for income taxes				0				0
Loss from discontinued operations				0				0
Net income	31,542			15,697			63,744	54,400
Comprehensive income (loss)	36,940			(597)			63,744	58,450
Reportable Legal Entities | Non-Guarantor Companies
Condensed Income Statements, Captions [Line Items]
Revenue	126,847			118,694			357,812	311,219
Cost of goods and services	91,541			84,568			252,331	215,786
Gross profit	35,306			34,126			105,481	95,433
Selling, general and administrative expenses	22,913			27,252			74,237	72,478
Income from operations	12,393			6,874			31,244	22,955
Other income (expense)
Interest income (expense), net	(35)			(868)			37	(2,611)
Loss from debt extinguishment, net	0						0
Other, net	4,004			12,762			10,844	14,479
Total other expense, net	3,969			11,894			10,881	11,868
Income before taxes from continuing operations	16,362			18,768			42,125	34,823
Provision (benefit) for income taxes	5,335			1,961			15,729	6,878
Income (loss) before equity in net income of subsidiaries	11,027			16,807			26,396	27,945
Equity in net income (loss) of subsidiaries	20,622			56			37,287	21,063
Income from continuing operations				16,863				49,008
Loss from operations of discontinued operations				0				(11,000)
Provision (benefit) for income taxes				533				(2,821)
Loss from discontinued operations				(533)				(8,179)
Net income	31,649			16,330			63,683	40,829
Comprehensive income (loss)	26,251			32,624			63,683	36,779
Elimination
Condensed Income Statements, Captions [Line Items]
Revenue	(9,869)			(13,952)			(29,938)	(28,305)
Cost of goods and services	(10,200)			(14,278)			(30,994)	(29,370)
Gross profit	331			326			1,056	1,065
Selling, general and administrative expenses	(145)			(490)			(330)	(277)
Income from operations	476			816			1,386	1,342
Other income (expense)
Interest income (expense), net	0			0			0	0
Loss from debt extinguishment, net	0						0
Other, net	(472)			(828)			(1,386)	(1,354)
Total other expense, net	(472)			(828)			(1,386)	(1,354)
Income before taxes from continuing operations	4			(12)			0	(12)
Provision (benefit) for income taxes	4			(12)			0	(12)
Income (loss) before equity in net income of subsidiaries	0			0			0	0
Equity in net income (loss) of subsidiaries	(63,191)			(32,027)			(127,427)	(95,229)
Income from continuing operations				(32,027)				(95,229)
Loss from operations of discontinued operations				0				0
Provision (benefit) for income taxes				0				0
Loss from discontinued operations				0				0
Net income	(63,191)			(32,027)			(127,427)	(95,229)
Comprehensive income (loss)	$ (63,191)			$ (32,027)			$ (127,427)	$ (95,229)

CONSOLIDATING GUARANTOR AND N_6

CONSOLIDATING GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION - Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2020	Jun. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 21,831	$ 895	$ 10,612	$ 13,595	$ (1,156)	$ 8,753	$ 33,338	$ 21,192
Net loss from discontinued operations	0			533			0	8,179
Net cash provided by (used in) operating activities:							55,944	14,982
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment	(12,232)			(10,376)			(34,751)	(27,794)
Acquired businesses, net of cash acquired							(10,531)	(9,219)
Investment purchase							(130)	(149)
Proceeds from sale of business				(9,500)			0	(9,500)
Insurance payments							0	(10,604)
Proceeds from sale of assets							339	104
Net cash used in investing activities							(45,073)	(57,162)
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury							(7,479)	(1,478)
Proceeds from long-term debt							1,230,618	156,800
Payments of long-term debt							(1,205,231)	(108,260)
Contingent consideration for acquired businesses							0	(1,686)
Financing costs							(16,543)	(1,012)
Dividends paid							(10,639)	(10,262)
Other, net							(31)	(197)
Net cash provided by (used in) financing activities							(9,305)	33,905
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash provided by (used) in discontinued operations							(2,481)	(3,874)
Effect of exchange rate changes on cash and equivalents							537	503
NET DECREASE IN CASH AND EQUIVALENTS							(378)	(11,646)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			72,377			69,758	72,377	69,758
CASH AND EQUIVALENTS AT END OF PERIOD	71,999			58,112			71,999	58,112
Reportable Legal Entities | Parent Company
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	21,831			13,595			33,338	21,192
Net loss from discontinued operations				0				0
Net cash provided by (used in) operating activities:							(10,683)	(20,805)
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment							(306)	(247)
Acquired businesses, net of cash acquired							0	(9,219)
Investment purchase							(130)	(149)
Proceeds from sale of business								(9,500)
Insurance payments								(10,604)
Proceeds from sale of assets							0	0
Net cash used in investing activities							(436)	(29,719)
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury							(7,479)	(1,478)
Proceeds from long-term debt							1,224,722	138,541
Payments of long-term debt							(1,171,365)	(75,694)
Contingent consideration for acquired businesses								0
Financing costs							(16,543)	(1,012)
Dividends paid							(10,639)	(10,262)
Other, net							(4,499)	(197)
Net cash provided by (used in) financing activities							14,197	49,898
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash provided by (used) in discontinued operations							0	0
Effect of exchange rate changes on cash and equivalents							0	0
NET DECREASE IN CASH AND EQUIVALENTS							3,078	(626)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			1,649			15,976	1,649	15,976
CASH AND EQUIVALENTS AT END OF PERIOD	4,727			15,350			4,727	15,350
Reportable Legal Entities | Guarantor Companies
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	31,542			15,697			63,744	54,400
Net loss from discontinued operations				0				0
Net cash provided by (used in) operating activities:							35,520	24,179
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment							(30,497)	(23,221)
Acquired businesses, net of cash acquired							0	0
Investment purchase							0	0
Proceeds from sale of business								0
Insurance payments								0
Proceeds from sale of assets							341	79
Net cash used in investing activities							(30,156)	(23,142)
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury							0	0
Proceeds from long-term debt							0	116
Payments of long-term debt							(2,647)	(2,605)
Contingent consideration for acquired businesses								0
Financing costs							0	0
Dividends paid							0	0
Other, net							(7,723)	5,694
Net cash provided by (used in) financing activities							(10,370)	3,205
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash provided by (used) in discontinued operations							0	0
Effect of exchange rate changes on cash and equivalents							(514)	(118)
NET DECREASE IN CASH AND EQUIVALENTS							(5,520)	4,124
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			25,217			16,353	25,217	16,353
CASH AND EQUIVALENTS AT END OF PERIOD	19,697			20,477			19,697	20,477
Reportable Legal Entities | Non-Guarantor Companies
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	31,649			16,330			63,683	40,829
Net loss from discontinued operations				533				8,179
Net cash provided by (used in) operating activities:							31,107	11,608
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment							(3,948)	(4,326)
Acquired businesses, net of cash acquired							(10,531)	0
Investment purchase							0	0
Proceeds from sale of business								0
Insurance payments								0
Proceeds from sale of assets							(2)	25
Net cash used in investing activities							(14,481)	(4,301)
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury							0	0
Proceeds from long-term debt							5,896	18,143
Payments of long-term debt							(31,219)	(29,961)
Contingent consideration for acquired businesses								(1,686)
Financing costs							0	0
Dividends paid							0	0
Other, net							12,191	(5,694)
Net cash provided by (used in) financing activities							(13,132)	(19,198)
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash provided by (used) in discontinued operations							(2,481)	(3,874)
Effect of exchange rate changes on cash and equivalents							1,051	621
NET DECREASE IN CASH AND EQUIVALENTS							2,064	(15,144)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			45,511			37,429	45,511	37,429
CASH AND EQUIVALENTS AT END OF PERIOD	47,575			22,285			47,575	22,285
Elimination
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	(63,191)			(32,027)			(127,427)	(95,229)
Net loss from discontinued operations				0				0
Net cash provided by (used in) operating activities:							0	0
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment							0	0
Acquired businesses, net of cash acquired							0	0
Investment purchase							0	0
Proceeds from sale of business								0
Insurance payments								0
Proceeds from sale of assets							0	0
Net cash used in investing activities							0	0
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury							0	0
Proceeds from long-term debt							0	0
Payments of long-term debt							0	0
Contingent consideration for acquired businesses								0
Financing costs							0	0
Dividends paid							0	0
Other, net							0	0
Net cash provided by (used in) financing activities							0	0
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash provided by (used) in discontinued operations							0	0
Effect of exchange rate changes on cash and equivalents							0	0
NET DECREASE IN CASH AND EQUIVALENTS							0	0
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD			$ 0			$ 0	0	0
CASH AND EQUIVALENTS AT END OF PERIOD	$ 0			$ 0			$ 0	$ 0