Griffon (GFF) 10-Q 31 Jan 20 2020 Q1 Quarterly report Financial data

Cover Page

Cover Page	3 Months Ended
	Dec. 31, 2019shares
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Dec. 31, 2019
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	46,908,654
Current Fiscal Year End Date	--09-30
Amendment Flag	false
Entity Central Index Key	0000050725
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019
CURRENT ASSETS
Cash and equivalents	$ 64,792	$ 72,377
Accounts receivable, net of allowances of $8,877 and $7,881	272,572	264,450
Contract costs and recognized income not yet billed, net of progress payments of $15,458 and $13,861	96,826	105,111
Inventories	467,069	442,121
Prepaid and other current assets	44,374	40,799
Assets of discontinued operations	321	321
Total Current Assets	945,954	925,179
PROPERTY, PLANT AND EQUIPMENT, net	332,148	337,326
OPERATING LEASE RIGHT-OF-USE ASSETS	154,379
GOODWILL	446,590	437,067
INTANGIBLE ASSETS, net	357,743	356,639
OTHER ASSETS	18,105	15,840
ASSETS OF DISCONTINUED OPERATIONS	2,883	2,888
Total Assets	2,257,802	2,074,939
CURRENT LIABILITIES
Notes payable and current portion of long-term debt	9,451	10,525
Accounts payable	220,038	250,576
Accrued liabilities	126,943	124,665
Current portion of operating lease liabilities	28,292
Liabilities of discontinued operations	3,787	4,333
Total Current Liabilities	388,511	390,099
LONG-TERM DEBT, net	1,137,134	1,093,749
LONG-TERM OPERATING LEASE LIABILITIES	130,949
OTHER LIABILITIES	103,299	109,997
LIABILITIES OF DISCONTINUED OPERATIONS	3,216	3,331
Total Liabilities	1,763,109	1,597,176
COMMITMENTS AND CONTINGENCIES - See Note 21
SHAREHOLDERS’ EQUITY
Total Shareholders’ Equity	494,693	477,763
Total Liabilities and Shareholders’ Equity	$ 2,257,802	$ 2,074,939

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019
Statement of Financial Position [Abstract]
Accounts receivable, net allowances	$ 8,877	$ 7,881
Contract costs, net of progress payments	$ 15,458	$ 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
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)
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)
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)

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Revenue	$ 548,438	$ 510,522
Cost of goods and services	398,517	367,476
Gross profit	149,921	143,046
Selling, general and administrative expenses	117,798	113,754
Income from operations	32,123	29,292
Other income (expense)
Interest expense	(16,211)	(16,529)
Interest income	261	198
Other, net	778	1,004
Total other expense, net	(15,172)	(15,327)
Income before taxes	16,951	13,965
Provision from income taxes	6,339	5,212
Net income	$ 10,612	$ 8,753
Basic earnings per common share (in dollars per share)	$ 0.26	$ 0.21
Basic weighted-average shares outstanding (in shares)	41,173	40,750
Diluted earnings per common share (in dollars per share)	$ 0.24	$ 0.21
Diluted weighted-average shares outstanding (in shares)	43,895	41,888
Dividends paid per common share (in dollars per share)	$ 0.0750	$ 0.0725
Net income	$ 10,612	$ 8,753
Other comprehensive income (loss), net of taxes:
Foreign currency translation adjustments	6,470	(5,736)
Pension and other post retirement plans	672	184
Change in cash flow hedges	(301)	102
Total other comprehensive income (loss), net of taxes	6,841	(5,450)
Comprehensive income (loss), net	$ 17,453	$ 3,303

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 10,612	$ 8,753
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	15,825	15,085
Stock-based compensation	3,150	2,933
Asset impairment charges - restructuring	4,160	0
Provision for losses on accounts receivable	35	158
Amortization of debt discounts and issuance costs	1,273	1,229
Deferred income taxes	198	(1,380)
Gain on sale of assets and investments	(186)	(91)
Change in assets and liabilities, net of assets and liabilities acquired:
Decrease in accounts receivable and contract costs and recognized income not yet billed	2,942	37,181
Increase in inventories	(19,480)	(33,958)
Increase in prepaid and other assets	(2,269)	(444)
Decrease in accounts payable, accrued liabilities, income taxes payable and net change to leases	(36,445)	(29,622)
Other changes, net	2,016	1,197
Net cash provided by (used in) operating activities	(18,169)	1,041
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment	(13,172)	(8,397)
Acquired businesses, net of cash acquired	(10,531)	(9,219)
Proceeds from sale of assets	184	51
Net cash used in investing activities	(23,519)	(17,565)
CASH FLOWS FROM FINANCING ACTIVITIES:
Dividends paid	(3,392)	(3,143)
Purchase of shares for treasury	(1,758)	(1,348)
Proceeds from long-term debt	71,957	38,965
Payments of long-term debt	(32,045)	(4,322)
Change in short-term borrowings	0	38
Financing costs	(21)	(67)
Contingent consideration for acquired businesses	0	(1,686)
Other, net	(40)	137
Net cash provided by financing activities	34,701	28,574
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash used in operating activities	(606)	(458)
Net cash used in investing activities	0	0
Net cash used in financing activities	0	0
Net cash used in discontinued operations	(606)	(458)
Effect of exchange rate changes on cash and equivalents	8	402
NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS	(7,585)	11,994
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	72,377	69,758
CASH AND EQUIVALENTS AT END OF PERIOD	$ 64,792	$ 81,752

DESCRIPTION OF BUSINESS AND BAS

DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION	3 Months Ended
	Dec. 31, 2019
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. 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 HBP 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	3 Months Ended
	Dec. 31, 2019
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 2022 senior notes approximated $1,005,200 on December 31, 2019 . Fair values were based upon quoted market prices (level 1 inputs). Insurance contracts with values of $3,445 at December 31, 2019 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 December 31, 2019 , trading securities, measured at fair value based on quoted prices in active markets for similar assets (level 2 inputs), with a fair value of $2,835 ( $2,236 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 December 31, 2019 , 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 December 31, 2019 , Griffon had $20,000 and $750 of Australian dollar and British pound contracts, respectively, at a weighted average rate of $1.43 and $0.76 , respectively, 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 $202 ( $119 , net of tax) at December 31, 2019 and a loss of $56 was recorded in COGS during the three months ended December 31, 2019 for all settled contracts. All contracts expire in 15 to 180 days. At December 31, 2019 , Griffon had $4,050 of Canadian dollar contracts at a weighted average rate of $1.30 . The contracts, which protect Canadian operations from currency fluctuations for US dollar based purchases, do not qualify for hedge accounting. For the three months ended December 31, 2019 , fair value gains of $72 were recorded to Other liabilities and to Other income for the outstanding contracts, based on similar contract values (level 2 inputs). Realized gains of $3 were recorded in Other income during the three months ended December 31, 2019 for all settled contracts. All contracts expire in 30 to 270

REVENUE

REVENUE	3 Months Ended
	Dec. 31, 2019
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 ended December 31, 2019 and 2018, income from operations included net unfavorable catch-up adjustments approximating $3,000 and $2,500 , 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. The estimated remaining costs to complete loss contracts as of December 31, 2019 and September 30, 2019 were approximately $9,828 and $9,790 , respectively, and is recorded as a reduction to gross margin on the Consolidated Statements of Operations and Comprehensive Income (Loss). This loss had an immaterial impact on Griffon's Consolidated Financial Statements. 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 December 31, 2019, we had $370,200 of remaining performance obligations, which we also refer to as total backlog. We expect to recognize approximately 74% 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 $96,826 as of December 31, 2019 compared to $105,111 as of September 30, 2019. The $8,285 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, 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 December 31, 2019 and September 30, 2019, approximately $13,900 and $13,100 , respectively, of contract costs and recognized income not yet billed were expected to be collected after one year. As of December 31, 2019, Contract costs and recognized income not yet billed included approximately $4,100 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 $21,217 as of December 31, 2019 compared to $26,259 as of September 30, 2019. The $5,042

ACQUISITIONS

ACQUISITIONS	3 Months Ended
	Dec. 31, 2019
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 $10,531 (GBP 8,150 ). 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 6,021 , inventory of GBP 2,441 , accounts receivable and other assets of GBP 1,432 and accrued liabilities of GBP 1,744 . The Company did no

INVENTORIES

INVENTORIES	3 Months Ended
	Dec. 31, 2019
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 December 31, 2019 At September 30, 2019 Raw materials and supplies $ 124,014 $ 121,791 Work in process 100,607 93,830 Finished goods 242,448 226,500 Total $ 467,069 $ 442,121

PROPERTY, PLANT AND EQUIPMENT

PROPERTY, PLANT AND EQUIPMENT	3 Months Ended
	Dec. 31, 2019
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 December 31, 2019 At September 30, 2019 Land, building and building improvements $ 143,942 $ 133,036 Machinery and equipment 576,230 580,698 Leasehold improvements 50,603 49,808 770,775 763,542 Accumulated depreciation and amortization (438,627 ) (426,216 ) Total $ 332,148 $ 337,326 Depreciation and amortization expense for property, plant and equipment was $13,432 and $12,667 for the quarters ended December 31, 2019 and 2018 , respectively. Depreciation included in SG&A expenses was $4,951 and $4,681 for the quarters ended December 31, 2019 and 2018, 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 three months ended December 31, 2019

GOODWILL AND OTHER INTANGIBLES

GOODWILL AND OTHER INTANGIBLES	3 Months Ended
	Dec. 31, 2019
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 three months ended December 31, 2019 : At September 30, 2019 Goodwill from acquisitions Other At December 31, 2019 Consumer and Professional Products $ 227,269 $ 7,942 $ 1,581 $ 236,792 Home and Building Products 191,253 — — 191,253 Defense Electronics 18,545 — — 18,545 Total $ 437,067 $ 7,942 $ 1,581 $ 446,590 The following table provides the gross carrying value and accumulated amortization for each major class of intangible assets: At December 31, 2019 At September 30, 2019 Gross Carrying Amount Accumulated Amortization Average Life (Years) Gross Carrying Amount Accumulated Amortization Customer relationships & other $ 184,980 $ 60,327 23 $ 183,515 $ 57,783 Technology and patents 19,317 7,640 13 19,167 7,329 Total amortizable intangible assets 204,297 67,967 202,682 65,112 Trademarks 221,413 — 219,069 — Total intangible assets $ 425,710 $ 67,967 $ 421,751 $ 65,112 Amortization expense for intangible assets was $2,393 and $2,418 for the quarters ended December 31, 2019 and 2018, respectively. 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 - $9,593 ; 2021 - $9,387 ; 2022 - $9,387 ; 2023 - $9,234 ; 2024 - $9,208 ; 2025 - $9,208 ; thereafter $80,313 . No event or indicator of impairment occurred during the three months ended December 31, 2019 which would require impairment testing of long-lived intangible assets including goodwill.

INCOME TAXES

INCOME TAXES	3 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES During the quarter ended December 31, 2019, the Company recognized a tax provision of $6,339 on income before taxes of $16,951 , compared to a tax provision of $5,212 on income before taxes of $13,965 in the comparable prior year quarter. The current year quarter included restructuring charges of $6,434 ( $4,148 , net of tax) and net discrete tax and certain other tax provisions, net of $833 , that affect comparability. The prior year quarter included net discrete tax and certain other tax provisions of $467 that affect comparability. Excluding these items, the effective tax rates for the quarters ended December 31, 2019 and 2018 were 33.3% and 34.0% , respectively.

LONG-TERM DEBT

LONG-TERM DEBT	3 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
LONG-TERM DEBT	LONG-TERM DEBT At December 31, 2019 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 2022 (a) $ 1,000,000 $ 778 $ (8,214 ) $ 992,564 5.25 % $ 1,000,000 $ 867 $ (9,175 ) $ 991,692 5.25 % Revolver due 2025 (b) 100,117 — (1,043 ) 99,074 Variable 50,000 — (1,243 ) 48,757 Variable Capital lease - real estate (d) 3,573 — (48 ) 3,525 5.00 % 4,388 — (55 ) 4,333 5.00 % Non US lines of credit (e) 9,965 — (42 ) 9,923 Variable 17,576 — (45 ) 17,531 Variable Non US term loans (e) 37,422 — (181 ) 37,241 Variable 36,977 — (188 ) 36,789 Variable Other long term debt (f) 4,275 — (17 ) 4,258 Variable 5,190 — (18 ) 5,172 Variable Totals 1,155,352 778 (9,545 ) 1,146,585 1,114,131 867 (10,724 ) 1,104,274 less: Current portion (9,451 ) — — (9,451 ) (10,525 ) — — (10,525 ) Long-term debt $ 1,145,901 $ 778 $ (9,545 ) $ 1,137,134 $ 1,103,606 $ 867 $ (10,724 ) $ 1,093,749 Three Months Ended December 31, 2019 Three Months Ended December 31, 2018 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 2022 (a) 5.7 % $ 13,125 $ 67 $ 951 $ 14,143 5.7 % $ 13,125 $ 68 $ 951 $ 14,144 Revolver due 2025 (b) Variable 1,382 — 232 1,614 Variable 933 — 141 1,074 ESOP Loans (c) n/a — — — — 5.5 % 488 — 31 519 Capital lease - real estate (d) 5.6 % 61 — 6 67 5.6 % 115 — 6 121 Non US lines of credit (e) Variable 4 — 4 8 Variable 7 — 4 11 Non US term loans (e) Variable 272 — 12 284 Variable 448 — 27 475 Other long term debt (f) Variable 160 — — 160 Variable 182 — 3 185 Capitalized interest (65 ) — — (65 ) — — — — Totals $ 14,939 $ 67 $ 1,205 $ 16,211 $ 15,298 $ 68 $ 1,163 $ 16,529 (1) n/a = not applicable (a) On October 2, 2017, in an unregistered offering through a private placement under Rule 144A, Griffon completed the add-on offering of $275,000 principal amount of its 5.25% senior notes due 2022, at 101.00% of par, to Griffon's previously issued $125,000 principal amount of its 5.25% senior notes due 2022, at 98.76% of par, completed on May 18, 2016 and $600,000 5.25% senior notes due in 2022, at par, which was completed on February 27, 2014 (collectively the “Senior Notes”). As of December 31, 2019 , 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 February 5, 2018, July 20, 2016 and June 18, 2014, Griffon exchanged all of the $275,000 , $125,000 and $600,000 Senior Notes, respectively, for substantially identical Senior Notes registered under the Securities Act of 1933 via an exchange offer. The fair value of the Senior Notes approximated $1,005,200 on December 31, 2019 based upon quoted market prices (level 1 inputs). In connection with the issuance of the senior notes, Griffon capitalized $21,801 of underwriting fees and other expenses. All capitalized fees for the Senior Notes will amortize over the term of the notes and, at December 31, 2019 , $8,214 remained to be amortized. (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, except that if the Senior Notes are not refinanced prior to December 1, 2021, then the Credit Agreement will mature on December 1, 2021. 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 1.00% for base rate loans and 2.00% 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 December 31, 2019 , under the Credit Agreement, there were $100,117 of outstanding borrowings; outstanding standby letters of credit were $21,129 ; and $228,754 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 December 31, 2019 was $31,783 . (d) Two Griffon subsidiaries have capital leases outstanding for real estate located in Troy, Ohio and Ocala, Florida. The leases mature in 2021 and 2020 , respectively, and bear interest at fixed rates of approximately 5.0% and 8.0% , respectively. The Troy, Ohio lease is secured by a mortgage on the real estate and is guaranteed by Griffon. The Ocala, Florida lease contains two five -year renewal options. At December 31, 2019 , $3,525 was outstanding, net of issuance costs. (e) In November 2012, Garant G.P. (“Garant”) entered into a CAD 15,000 ( $11,480 as of December 31, 2019 ) revolving credit facility. The facility accrues interest at LIBOR (USD) or the Bankers Acceptance Rate (CDN) plus 1.3% per annum ( 3.06% LIBOR USD and 3.29% Bankers Acceptance Rate CDN as of December 31, 2019 ). The revolving facility matures in October 2022. Garant is required to maintain a certain minimum equity. At December 31, 2019 , there were no borrowings under the revolving credit facility with CAD 15,000 ( $11,480 as of December 31, 2019 ) 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 13,375 due upon maturity in March 2022, and accrues interest at Bank Bill Swap Bid Rate “BBSY” plus 1.90% per annum ( 2.87% at December 31, 2019 ). As of December 31, 2019 , the term loan had an outstanding balance of AUD 24,625 ( $17,225 as of December 31, 2019 ). The revolving facility and receivable purchase facility mature in March 2020, but are renewable upon mutual agreement with the lender. The revolving facility and receivable purchase facility accrue interest at BBSY plus 1.8% and 1.0% , respectively, per annum ( 2.72% and 1.92% , respectively, at December 31, 2019 ). At December 31, 2019 , there were no borrowings under the revolver and the receivable purchase facilities had an outstanding balance of AUD 10,000 ( $6,995 as of December 31, 2019 ). 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 7,000 and GBP 2,333 , respectively. The Term Loan and Mortgage Loans accrue interest at the GBP LIBOR Rate plus 2.25% and 1.8% , respectively ( 2.95% and 2.50% at December 31, 2019 , respectively). The revolving facility matures in June 2020, but is renewable upon mutual agreement with the lender, and accrues interest at the Bank of England Base Rate plus 1.5% ( 2.25% as of December 31, 2019 ). As of December 31, 2019 , the revolver had an outstanding balance of GBP 2,264 ( $2,970 as December 31, 2019 ) while the term and mortgage loan balances amounted to GBP 15,398 ( $20,197 as of December 31, 2019). 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 December 31, 2019 , Griffon and its subsidiaries were in compliance with the terms and covenants of all credit and loan agreements.

SHAREHOLDERS' EQUITY

SHAREHOLDERS' EQUITY	3 Months Ended
	Dec. 31, 2019
Stockholders' Equity Note [Abstract]
SHAREHOLDERS' EQUITY	SHAREHOLDERS’ EQUITY During the first quarter of 2020, the Company paid a quarterly cash dividend of $0.075 per share. 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 $350,000 credit facility; dividends paid on allocated shares in the ESOP are allocated to participant accounts in the form of additional shares. On January 30, 2020, the Board of Directors declared a quarterly cash dividend of $0.075 per share, payable on March 19, 2020 to shareholders of record as of the close of business on February 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 under 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 December 31, 2019 , after giving effect to Amendment No. 2 to the Incentive Plan, there were 1,782,950 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. On January 30, 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. Additionally, 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 $9,586 , or a weighted average fair value of $14.52 per share. For the quarters ended December 31, 2019 and 2018, stock based compensation expense totaled $3,150 and $2,933 , respectively. 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 ended December 31, 2019, Griffon did not purchase any shares of common stock under these repurchase programs. As of December 31, 2019 , an aggregate of $57,955 remains under Griffon's Board authorized repurchase programs. During the three months ended December 31, 2019 , 79,552 shares, with a market value of $1,688 , or $21.22 per share were withheld to settle employee taxes due upon the vesting of restricted stock, and were added to treasury stock. Furthermore, during the three months ended December 31, 2019, an additional 3,307 shares, with a market value of $70 , or $21.22

EARNINGS PER SHARE (EPS)

EARNINGS PER SHARE (EPS)	3 Months Ended
	Dec. 31, 2019
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 December 31, 2019 2018 Weighted average shares outstanding - basic 41,173 40,750 Incremental shares from stock based compensation 2,722 1,138 Weighted average shares outstanding - diluted 43,895 41,888

BUSINESS SEGMENTS

BUSINESS SEGMENTS	3 Months Ended
	Dec. 31, 2019
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 it 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 December 31, REVENUE 2019 2018 Consumer and Professional Products $ 241,076 $ 216,474 Home and Building Products 241,381 223,295 Defense Electronics 65,981 70,753 Total consolidated net sales $ 548,438 $ 510,522 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 December 31, 2019 2018 Residential repair and remodel $ 35,090 $ 27,158 Retail 119,620 113,365 Residential new construction 14,973 14,272 Industrial 10,623 9,758 International excluding North America 60,770 51,921 Total Consumer and Professional Products 241,076 216,474 Residential repair and remodel 121,997 113,367 Commercial construction 91,887 84,376 Residential new construction 27,497 25,552 Total Home and Building Products 241,381 223,295 U.S. Government 42,701 45,560 International 18,533 22,099 Commercial 4,747 3,094 Total Defense Electronics $ 65,981 $ 70,753 Total Consolidated Revenue $ 548,438 $ 510,522 The following table presents revenue disaggregated by geography based on the location of the Company's customer: For the Three Months Ended December 31, 2019 Revenue by Geographic Area - Destination Consumer and Professional Products Home and Building Products Defense Electronics Total United States $ 160,158 $ 226,950 $ 46,143 $ 433,251 Europe 6,605 23 5,985 12,613 Canada 17,781 11,253 2,574 31,608 Australia 54,228 — 606 54,834 All other countries 2,304 $ 3,155 10,673 16,132 Consolidated revenue $ 241,076 $ 241,381 $ 65,981 $ 548,438 For the Three Months Ended December 31, 2018 Revenue by Geographic Area - Destination Consumer and Professional Products Home and Building Products Defense Electronics Total United States $ 142,916 $ 209,827 $ 48,295 $ 401,038 Europe 7,865 17 10,311 18,193 Canada 19,365 10,981 2,629 32,975 Australia 44,039 184 609 44,832 All other countries 2,289 2,286 8,909 13,484 Consolidated revenue $ 216,474 $ 223,295 $ 70,753 $ 510,522 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 on 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 (loss) before taxes: For the Three Months Ended December 31, 2019 2018 Segment adjusted EBITDA: Consumer and Professional Products $ 21,926 $ 20,565 Home and Building Products 40,701 31,295 Defense Electronics 4,475 4,785 Segment adjusted EBITDA 67,102 56,645 Unallocated amounts, excluding depreciation (11,942 ) (11,264 ) Adjusted EBITDA 55,160 45,381 Net interest expense (15,950 ) (16,331 ) Depreciation and amortization (15,825 ) (15,085 ) Restructuring charges (6,434 ) — Income before taxes $ 16,951 $ 13,965 Unallocated amounts typically include general corporate expenses not attributable to a reportable segment. For the Three Months Ended December 31, DEPRECIATION and AMORTIZATION 2019 2018 Segment: Consumer and Professional Products $ 8,231 $ 7,806 Home and Building Products 4,800 4,509 Defense Electronics 2,644 2,636 Total segment depreciation and amortization 15,675 14,951 Corporate 150 134 Total consolidated depreciation and amortization $ 15,825 $ 15,085 CAPITAL EXPENDITURES Segment: Consumer and Professional Products $ 3,732 $ 4,334 Home and Building Products 7,939 2,811 Defense Electronics 1,289 1,234 Total segment 12,960 8,379 Corporate 212 18 Total consolidated capital expenditures $ 13,172 $ 8,397 ASSETS At December 31, 2019 At September 30, 2019 Segment assets: Consumer and Professional Products $ 1,235,734 $ 1,070,510 Home and Building Products 589,478 571,216 Defense Electronics 340,788 347,575 Total segment assets 2,166,000 1,989,301 Corporate 88,598 82,429 Total continuing assets 2,254,598 2,071,730 Assets of discontinued operations 3,204 3,209 Consolidated total $ 2,257,802 $ 2,074,939

EMPLOYEE BENEFIT PLANS

EMPLOYEE BENEFIT PLANS	3 Months Ended
	Dec. 31, 2019
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 December 31, 2019 2018 Interest cost $ 1,151 $ 1,570 Expected return on plan assets (2,586 ) (2,583 ) Amortization: Prior service cost 4 4 Recognized actuarial loss 1,042 222 Net periodic expense (income) $ (389 ) $ (787 )

RECENT ACCOUNTING PRONOUNCEMENT

RECENT ACCOUNTING PRONOUNCEMENTS	3 Months Ended
	Dec. 31, 2019
Accounting Changes and Error Corrections [Abstract]
RECENT ACCOUNTING PRONOUNCEMENTS	RECENT ACCOUNTING PRONOUNCEMENTS In February 2016, the 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 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. In May 2017, the FASB issued guidance to address the situation when a company modifies the terms of a stock compensation award previously granted to an employee. This guidance is effective, and should be applied prospectively, for fiscal years beginning after December 15, 2017. Early adoption is permitted as of the beginning of an annual period. The new guidance was effective for the Company beginning in fiscal 2019; however, the Company adopted this guidance as of October 1, 2018 and it did not have a material impact on the Company's financial condition, results of operations and related disclosures. In March 2017, the FASB issued amendments to the Compensation - Retirement Benefits guidance which requires companies to retrospectively present the service cost component of net periodic benefit cost for pension and retiree medical plans along with other compensation costs in operating income and present the other components of net periodic benefit cost below operating income in the income statement. The guidance also allows only the service cost component of net periodic benefit cost to be eligible for capitalization within inventory or fixed assets on a prospective basis. This guidance was effective for fiscal years beginning after December 15, 2017. The Company adopted the requirements of the standard as of October 1, 2018 on a retrospective basis reclassifying the other components of the net periodic benefit costs from Selling, general and administrative expenses to a non-service expense within Other (income) expense, net. This guidance did not have a material impact on the Company's results of operations. See Note 11 - Employee Benefit Plans for further information on the implementation of this guidance. 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. In August 2016, the FASB issued guidance on the Statement of Cash Flows Classification of certain cash receipts and cash payments (a consensus of the FASB Emerging Issues Task Force). This guidance addresses the following eight specific cash flow issues: Debt prepayment or debt extinguishment costs; settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies (including bank-owned life insurance policies); distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle. This guidance was effective for the Company beginning in fiscal 2019. The Company adopted the requirements of the standard in the first quarter of 2019 and it did not have a material impact on the Company's financial condition, results of operations and 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. Issued but not yet effective accounting pronouncements 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 2020. 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 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 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. 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	3 Months Ended
	Dec. 31, 2019
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 months ended December 31, 2019 and 2018. 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 of Plastics and 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 December 31, 2019 At September 30, 2019 Assets of discontinued operations: Prepaid and other current assets $ 321 $ 321 Other long-term assets 2,883 2,888 Total assets of discontinued operations $ 3,204 $ 3,209 Liabilities of discontinued operations: Accrued liabilities, current $ 3,787 $ 4,333 Other long-term liabilities 3,216 3,331 Total liabilities of discontinued operations $ 7,003 $ 7,664

RESTRUCTURING CHARGES

RESTRUCTURING CHARGES	3 Months Ended
	Dec. 31, 2019
Restructuring and Related Activities [Abstract]
RESTRUCTURING CHARGES	RESTRUCTURING CHARGES In November 2019, Griffon announced the development of a new 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 ended December 31, 2019, CPP incurred pre-tax restructuring and related exit costs approximating $6,434 , comprised of cash charges of $2,274 and non-cash, asset-related charges of $4,160 ; the cash charges included $2,134 for one-time termination benefits and other personnel-related costs and $140 for facility exit costs. Non-cash charges included a $1,740 impairment charge related to a facility’s operating lease as well as $671 of leasehold improvements made to the leased facility 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 28 . 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 December 31, 2019 Cost of goods and services $ 2,723 Selling, general and administrative expenses 3,711 Total restructuring charges $ 6,434 For the Three Months Ended December 31, 2019 Personnel related costs $ 2,134 Facilities, exit costs and other 140 Non-cash facility and other 4,160 Total $ 6,434 The following table summarizes the accrued liabilities of the Company's restructuring actions: Personnel related costs Facilities & Non-Cash Facility and Other Costs Total Accrued liability at September 30, 2019 $ — $ — $ — $ — 2020 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 (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)	3 Months Ended
	Dec. 31, 2019
Other Income and Expenses [Abstract]
OTHER INCOME (EXPENSE)	OTHER INCOME (EXPENSE) For the quarters ended December 31, 2019 and 2018 , Other income (expense) includes $(376) and $502 , 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 $389 and $787 , respectively, as well as $81 and $(77) , respectively, of net investment (loss) income. During the quarter ended December 31, 2019, Other income (expense) also includes a one-time contract award of $700

WARRANTY LIABILITY

WARRANTY LIABILITY	3 Months Ended
	Dec. 31, 2019
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 December 31, 2019 2018 Balance, beginning of period $ 7,894 $ 8,174 Warranties issued and changes in estimated pre-existing warranties 3,365 4,061 Actual warranty costs incurred (3,915 ) (3,194 ) Balance, end of period $ 7,344 $ 9,041

OTHER COMPREHENSIVE INCOME (LOS

OTHER COMPREHENSIVE INCOME (LOSS)	3 Months Ended
	Dec. 31, 2019
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 December 31, 2019 Three Months Ended December 31, 2018 Pre-tax Tax Net of tax Pre-tax Tax Net of tax Foreign currency translation adjustments $ 6,470 $ — $ 6,470 $ (5,736 ) $ — $ (5,736 ) Pension and other defined benefit plans 847 (175 ) 672 271 (87 ) 184 Cash flow hedges (430 ) 129 (301 ) 157 (55 ) 102 Total other comprehensive income (loss) $ 6,887 $ (46 ) $ 6,841 $ (5,308 ) $ (142 ) $ (5,450 ) The components of Accumulated other comprehensive income (loss) are as follows: At December 31, 2019 At September 30, 2019 Foreign currency translation adjustments $ (24,814 ) $ (31,284 ) Pension and other defined benefit plans (34,142 ) (34,814 ) Change in Cash flow hedges (119 ) 182 $ (59,075 ) $ (65,916 ) Amounts reclassified from accumulated other comprehensive income (loss) to income were as follows: For the Three Months Ended December 31, Gain (Loss) 2019 2018 Pension amortization $ (1,046 ) $ (226 ) Cash flow hedges (56 ) 682 Total gain (loss) $ (1,102 ) $ 456 Tax benefit (expense) 231 (158 ) Total $ (871 ) $ 298

LEASES

LEASES	3 Months Ended
	Dec. 31, 2019
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 quarter ended December 31, 2019, a $1,740 impairment charge was recorded related to a facility’s operating lease as well as $671 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 carryforward 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 December 31, 2019 Fixed $ 9,552 Variable (a), (b) 1,753 Short-term (b) 1,430 Total* $ 12,735 (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 Three Months ended December 31, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 12,277 Financing cash flows from finance leases 962 Total $ 13,239 Supplemental Condensed Consolidated Balance Sheet information related to leases were as follows: At December 31, 2019 Operating Leases: Right of use assets: Operating right-of-use assets $ 154,379 Lease Liabilities: Current portion of operating lease liabilities $ 28,292 Long-term operating lease liabilities 130,949 Total operating lease liabilities $ 159,241 Finance Leases: Property, plant and equipment, net (1) $ 5,506 Lease Liabilities: Notes payable and current portion of long-term debt $ 3,144 Long-term debt, net 2,500 Total financing lease liabilities $ 5,644 (1) Finance lease assets are recorded net of accumulated depreciation of $983 . The aggregate future maturities of lease payments for operating leases and finance leases as of December 31, 2019 are as follows (in thousands): Operating Leases Finance Leases 2020 (a) $ 26,011 $ 2,874 2021 30,778 2,156 2022 26,198 572 2023 19,978 224 2024 14,248 — 2025 12,200 — Thereafter 65,898 — Total lease payments 195,311 5,826 Less: Imputed Interest (36,070 ) (182 ) Present value of lease liabilities $ 159,241 $ 5,644 (a) Excluding the three months ended December 31, 2019 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 December 31, 2019 Weighted-average remaining lease term (years) Operating leases 8.8 Finance Leases 2.3 Weighted-average discount rate Operating Leases 4.10 % Finance Leases 5.72 %
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 quarter ended December 31, 2019, a $1,740 impairment charge was recorded related to a facility’s operating lease as well as $671 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 carryforward 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 December 31, 2019 Fixed $ 9,552 Variable (a), (b) 1,753 Short-term (b) 1,430 Total* $ 12,735 (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 Three Months ended December 31, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 12,277 Financing cash flows from finance leases 962 Total $ 13,239 Supplemental Condensed Consolidated Balance Sheet information related to leases were as follows: At December 31, 2019 Operating Leases: Right of use assets: Operating right-of-use assets $ 154,379 Lease Liabilities: Current portion of operating lease liabilities $ 28,292 Long-term operating lease liabilities 130,949 Total operating lease liabilities $ 159,241 Finance Leases: Property, plant and equipment, net (1) $ 5,506 Lease Liabilities: Notes payable and current portion of long-term debt $ 3,144 Long-term debt, net 2,500 Total financing lease liabilities $ 5,644 (1) Finance lease assets are recorded net of accumulated depreciation of $983 . The aggregate future maturities of lease payments for operating leases and finance leases as of December 31, 2019 are as follows (in thousands): Operating Leases Finance Leases 2020 (a) $ 26,011 $ 2,874 2021 30,778 2,156 2022 26,198 572 2023 19,978 224 2024 14,248 — 2025 12,200 — Thereafter 65,898 — Total lease payments 195,311 5,826 Less: Imputed Interest (36,070 ) (182 ) Present value of lease liabilities $ 159,241 $ 5,644 (a) Excluding the three months ended December 31, 2019 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 December 31, 2019 Weighted-average remaining lease term (years) Operating leases 8.8 Finance Leases 2.3 Weighted-average discount rate Operating Leases 4.10 % Finance Leases 5.72 %

COMMITMENTS AND CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	3 Months Ended
	Dec. 31, 2019
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. At the conclusion of the remediation phase to the satisfaction of the DEC, the DEC will issue a Certificate of Completion. AMES has performed significant investigative and remedial activities over the last few years under work plans approved by the DEC and is currently implementing a Remedial Action Work Plan for the site that was approved by the DEC; remediation of the site is expected to be completed by spring 2020. The DEC has indicated it may require additional remediation off-site. 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. 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	3 Months Ended
	Dec. 31, 2019
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 December 31, 2019 and September 30, 2019 and for the three months ended December 31, 2019 and 2018 . 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 indenture relating to the Senior Notes (the “Indenture”) contains 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 Indenture; (ii) a public equity offering of a subsidiary guarantor that qualifies as a “Minority Business” as defined in the Indenture (generally, a business the EBITDA of which constitutes less than 50% CONDENSED CONSOLIDATING BALANCE SHEETS At December 31, 2019 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation CURRENT ASSETS Cash and equivalents $ 3,070 $ 25,532 $ 36,190 $ — $ 64,792 Accounts receivable, net of allowances — 241,261 32,533 (1,222 ) 272,572 Contract costs and recognized income not yet billed, net of progress payments — 94,672 2,154 — 96,826 Inventories, net — 391,447 75,869 (247 ) 467,069 Prepaid and other current assets 11,041 26,573 6,906 (146 ) 44,374 Assets of discontinued operations — — 321 — 321 Total Current Assets 14,111 779,485 153,973 (1,615 ) 945,954 PROPERTY, PLANT AND EQUIPMENT, net 1,313 284,774 46,061 — 332,148 OPERATING LEASE RIGHT-OF-USE ASSETS 10,483 125,259 18,637 — 154,379 GOODWILL — 375,734 70,856 — 446,590 INTANGIBLE ASSETS, net 92 222,536 135,115 — 357,743 INTERCOMPANY RECEIVABLE 40,433 907,715 105,239 (1,053,387 ) — EQUITY INVESTMENTS IN SUBSIDIARIES 1,654,370 495,645 3,353,794 (5,503,809 ) — OTHER ASSETS 8,206 24,343 — (14,444 ) 18,105 ASSETS OF DISCONTINUED OPERATIONS — — 2,883 — 2,883 Total Assets $ 1,729,008 $ 3,215,491 $ 3,886,558 $ (6,573,255 ) $ 2,257,802 CURRENT LIABILITIES Notes payable and current portion of long-term debt $ — $ 2,589 $ 6,862 $ — $ 9,451 Accounts payable and accrued liabilities 48,147 299,912 — (1,078 ) 346,981 Current portion of operating lease liabilities 1,823 22,389 4,080 — 28,292 Liabilities of discontinued operations — — 3,787 — 3,787 Total Current Liabilities 49,970 324,890 14,729 (1,078 ) 388,511 LONG-TERM DEBT, net 1,091,638 2,743 42,753 — 1,137,134 LONG-TERM OPERATING LEASE LIABILITIES 9,816 106,191 14,942 — 130,949 INTERCOMPANY PAYABLES 64,689 527,147 490,808 (1,082,644 ) — OTHER LIABILITIES 18,202 79,514 13,754 (8,171 ) 103,299 LIABILITIES OF DISCONTINUED OPERATIONS — — 3,216 — 3,216 Total Liabilities 1,234,315 1,040,485 580,202 (1,091,893 ) 1,763,109 SHAREHOLDERS’ EQUITY 494,693 2,175,006 3,306,356 (5,481,362 ) 494,693 Total Liabilities and Shareholders’ Equity $ 1,729,008 $ 3,215,491 $ 3,886,558 $ (6,573,255 ) $ 2,257,802 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 December 31, 2019 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation Revenue $ — $ 441,392 $ 117,039 $ (9,993 ) $ 548,438 Cost of goods and services — 327,213 81,678 (10,374 ) 398,517 Gross profit — 114,179 35,361 381 149,921 Selling, general and administrative expenses 6,018 87,848 24,024 (92 ) 117,798 Income (loss) from operations (6,018 ) 26,331 11,337 473 32,123 Other income (expense) Interest income (expense), net (6,324 ) (9,673 ) 47 — (15,950 ) Other, net (97 ) (1,351 ) 2,699 (473 ) 778 Total other income (expense) (6,421 ) (11,024 ) 2,746 (473 ) (15,172 ) Income (loss) before taxes (12,439 ) 15,307 14,083 — 16,951 Provision (benefit) for income taxes (4,395 ) 5,727 5,007 — 6,339 Income (loss) before equity in net income of subsidiaries (8,044 ) 9,580 9,076 — 10,612 Equity in net income (loss) of subsidiaries 18,656 9,196 9,580 (37,432 ) — Net Income (loss) $ 10,612 $ 18,776 $ 18,656 $ (37,432 ) $ 10,612 Comprehensive income (loss) $ 17,453 $ 18,776 $ 18,656 $ (37,432 ) $ 17,453 CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) For the Three Months Ended December 31, 2018 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation Revenue $ — $ 419,244 $ 98,240 $ (6,962 ) $ 510,522 Cost of goods and services — 309,097 65,702 (7,323 ) 367,476 Gross profit — 110,147 32,538 361 143,046 Selling, general and administrative expenses 5,060 84,976 23,817 (99 ) 113,754 Income (loss) from operations (5,060 ) 25,171 8,721 460 29,292 Other income (expense) Interest income (expense), net (6,307 ) (9,130 ) (894 ) — (16,331 ) Other, net (262 ) 687 1,041 (462 ) 1,004 Total other income (expense) (6,569 ) (8,443 ) 147 (462 ) (15,327 ) Income (loss) before taxes (11,629 ) 16,728 8,868 (2 ) 13,965 Provision (benefit) for income taxes (3,535 ) 5,974 2,775 (2 ) 5,212 Income (loss) before equity in net income of subsidiaries (8,094 ) 10,754 6,093 — 8,753 Equity in net income (loss) of subsidiaries 16,847 6,050 10,754 (33,651 ) — Net Income (loss) $ 8,753 $ 16,804 $ 16,847 $ (33,651 ) $ 8,753 Comprehensive income (loss) $ 3,303 $ 53,569 $ (4,551 ) $ (49,018 ) $ 3,303 CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Three Months Ended December 31, 2019 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation CASH FLOWS FROM OPERATING ACTIVITIES: Net income (loss) $ 10,612 $ 18,776 $ 18,656 $ (37,432 ) $ 10,612 Net cash provided by (used in) operating activities: (42,309 ) 12,888 11,252 — (18,169 ) CASH FLOWS FROM INVESTING ACTIVITIES: Acquisition of property, plant and equipment (212 ) (12,463 ) (497 ) — (13,172 ) Acquired businesses, net of cash acquired — — (10,531 ) — (10,531 ) Proceeds from sale of assets — 184 — — 184 Net cash provided by (used in) investing activities (212 ) (12,279 ) (11,028 ) — (23,519 ) CASH FLOWS FROM FINANCING ACTIVITIES: Purchase of shares for treasury (1,758 ) — — — (1,758 ) Proceeds from long-term debt 65,329 13 6,615 — 71,957 Payments of long-term debt (16,179 ) (40 ) (15,826 ) — (32,045 ) Financing costs (21 ) — — — (21 ) Dividends paid (3,392 ) — — — (3,392 ) Other, net (37 ) (3 ) — — (40 ) Net cash provided by (used in) financing activities 43,942 (30 ) (9,211 ) — 34,701 CASH FLOWS FROM DISCONTINUED OPERATIONS: Net cash provided by (used) in discontinued operations — — (606 ) — (606 ) Effect of exchange rate changes on cash and equivalents — (264 ) 272 — 8 NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS 1,421 315 (9,321 ) — (7,585 ) CASH AND EQUIVALENTS AT BEGINNING OF PERIOD 1,649 25,217 45,511 — 72,377 CASH AND EQUIVALENTS AT END OF PERIOD $ 3,070 $ 25,532 $ 36,190 $ — $ 64,792 CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Three Months Ended December 31, 2018 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation CASH FLOWS FROM OPERATING ACTIVITIES: Net income (loss) $ 8,753 $ 16,804 $ 16,847 $ (33,651 ) $ 8,753 Net cash provided by (used in) operating activities: (23,532 ) 16,272 8,301 — 1,041 CASH FLOWS FROM INVESTING ACTIVITIES: Acquisition of property, plant and equipment (18 ) (6,935 ) (1,444 ) — (8,397 ) Acquired businesses, net of cash acquired (9,219 ) — — — (9,219 ) Proceeds from sale of assets — 38 13 — 51 Net cash provided by (used in) investing activities (9,237 ) (6,897 ) (1,431 ) — (17,565 ) CASH FLOWS FROM FINANCING ACTIVITIES: Purchase of shares for treasury (1,348 ) — — — (1,348 ) Proceeds from long-term debt 32,412 — 6,553 — 38,965 Payments of long-term debt (569 ) (855 ) (2,898 ) — (4,322 ) Change in short-term borrowings — 38 — — 38 Contingent consideration for acquired businesses — — (1,686 ) — (1,686 ) Financing costs (67 ) — — — (67 ) Dividends paid (3,143 ) — — — (3,143 ) Other, net 137 7,240 (7,240 ) — 137 Net cash provided by (used in) financing activities 27,422 6,423 (5,271 ) — 28,574 CASH FLOWS FROM DISCONTINUED OPERATIONS: Net cash provided by (used in) discontinued operations — — (458 ) — (458 ) Effect of exchange rate changes on cash and equivalents — (55 ) 457 — 402 NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS (5,347 ) 15,743 1,598 — 11,994 CASH AND EQUIVALENTS AT BEGINNING OF PERIOD 15,976 16,353 37,429 — 69,758 CASH AND EQUIVALENTS AT END OF PERIOD $ 10,629 $ 32,096 $ 39,027 $ — $ 81,752

DESCRIPTION OF BUSINESS AND B_2

DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (Policies)	3 Months Ended
	Dec. 31, 2019
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 HBP 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 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 Inventories are stated at the lower of cost (first-in, first-out or average) or market.
Recent Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS In February 2016, the 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 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. In May 2017, the FASB issued guidance to address the situation when a company modifies the terms of a stock compensation award previously granted to an employee. This guidance is effective, and should be applied prospectively, for fiscal years beginning after December 15, 2017. Early adoption is permitted as of the beginning of an annual period. The new guidance was effective for the Company beginning in fiscal 2019; however, the Company adopted this guidance as of October 1, 2018 and it did not have a material impact on the Company's financial condition, results of operations and related disclosures. In March 2017, the FASB issued amendments to the Compensation - Retirement Benefits guidance which requires companies to retrospectively present the service cost component of net periodic benefit cost for pension and retiree medical plans along with other compensation costs in operating income and present the other components of net periodic benefit cost below operating income in the income statement. The guidance also allows only the service cost component of net periodic benefit cost to be eligible for capitalization within inventory or fixed assets on a prospective basis. This guidance was effective for fiscal years beginning after December 15, 2017. The Company adopted the requirements of the standard as of October 1, 2018 on a retrospective basis reclassifying the other components of the net periodic benefit costs from Selling, general and administrative expenses to a non-service expense within Other (income) expense, net. This guidance did not have a material impact on the Company's results of operations. See Note 11 - Employee Benefit Plans for further information on the implementation of this guidance. 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. In August 2016, the FASB issued guidance on the Statement of Cash Flows Classification of certain cash receipts and cash payments (a consensus of the FASB Emerging Issues Task Force). This guidance addresses the following eight specific cash flow issues: Debt prepayment or debt extinguishment costs; settlement of zero-coupon debt instruments or other debt instruments with coupon interest rates that are insignificant in relation to the effective interest rate of the borrowing; contingent consideration payments made after a business combination; proceeds from the settlement of insurance claims; proceeds from the settlement of corporate-owned life insurance policies (including bank-owned life insurance policies); distributions received from equity method investees; beneficial interests in securitization transactions; and separately identifiable cash flows and application of the predominance principle. This guidance was effective for the Company beginning in fiscal 2019. The Company adopted the requirements of the standard in the first quarter of 2019 and it did not have a material impact on the Company's financial condition, results of operations and 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. Issued but not yet effective accounting pronouncements 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 2020. 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 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 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. 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)	3 Months Ended
	Dec. 31, 2019
Inventory Disclosure [Abstract]
Schedule of Inventory	The following table details the components of inventory: At December 31, 2019 At September 30, 2019 Raw materials and supplies $ 124,014 $ 121,791 Work in process 100,607 93,830 Finished goods 242,448 226,500 Total $ 467,069 $ 442,121

PROPERTY, PLANT AND EQUIPMENT (

PROPERTY, PLANT AND EQUIPMENT (Tables)	3 Months Ended
	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Summary of Property, Plant and Equipment	The following table details the components of property, plant and equipment, net: At December 31, 2019 At September 30, 2019 Land, building and building improvements $ 143,942 $ 133,036 Machinery and equipment 576,230 580,698 Leasehold improvements 50,603 49,808 770,775 763,542 Accumulated depreciation and amortization (438,627 ) (426,216 ) Total $ 332,148 $ 337,326

GOODWILL AND OTHER INTANGIBLES

GOODWILL AND OTHER INTANGIBLES (Tables)	3 Months Ended
	Dec. 31, 2019
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 three months ended December 31, 2019 : At September 30, 2019 Goodwill from acquisitions Other At December 31, 2019 Consumer and Professional Products $ 227,269 $ 7,942 $ 1,581 $ 236,792 Home and Building Products 191,253 — — 191,253 Defense Electronics 18,545 — — 18,545 Total $ 437,067 $ 7,942 $ 1,581 $ 446,590
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 December 31, 2019 At September 30, 2019 Gross Carrying Amount Accumulated Amortization Average Life (Years) Gross Carrying Amount Accumulated Amortization Customer relationships & other $ 184,980 $ 60,327 23 $ 183,515 $ 57,783 Technology and patents 19,317 7,640 13 19,167 7,329 Total amortizable intangible assets 204,297 67,967 202,682 65,112 Trademarks 221,413 — 219,069 — Total intangible assets $ 425,710 $ 67,967 $ 421,751 $ 65,112

LONG-TERM DEBT (Tables)

LONG-TERM DEBT (Tables)	3 Months Ended
	Dec. 31, 2019
Debt Disclosure [Abstract]
Summary of Long-Term Debt	At December 31, 2019 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 2022 (a) $ 1,000,000 $ 778 $ (8,214 ) $ 992,564 5.25 % $ 1,000,000 $ 867 $ (9,175 ) $ 991,692 5.25 % Revolver due 2025 (b) 100,117 — (1,043 ) 99,074 Variable 50,000 — (1,243 ) 48,757 Variable Capital lease - real estate (d) 3,573 — (48 ) 3,525 5.00 % 4,388 — (55 ) 4,333 5.00 % Non US lines of credit (e) 9,965 — (42 ) 9,923 Variable 17,576 — (45 ) 17,531 Variable Non US term loans (e) 37,422 — (181 ) 37,241 Variable 36,977 — (188 ) 36,789 Variable Other long term debt (f) 4,275 — (17 ) 4,258 Variable 5,190 — (18 ) 5,172 Variable Totals 1,155,352 778 (9,545 ) 1,146,585 1,114,131 867 (10,724 ) 1,104,274 less: Current portion (9,451 ) — — (9,451 ) (10,525 ) — — (10,525 ) Long-term debt $ 1,145,901 $ 778 $ (9,545 ) $ 1,137,134 $ 1,103,606 $ 867 $ (10,724 ) $ 1,093,749 (a) On October 2, 2017, in an unregistered offering through a private placement under Rule 144A, Griffon completed the add-on offering of $275,000 principal amount of its 5.25% senior notes due 2022, at 101.00% of par, to Griffon's previously issued $125,000 principal amount of its 5.25% senior notes due 2022, at 98.76% of par, completed on May 18, 2016 and $600,000 5.25% senior notes due in 2022, at par, which was completed on February 27, 2014 (collectively the “Senior Notes”). As of December 31, 2019 , 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 February 5, 2018, July 20, 2016 and June 18, 2014, Griffon exchanged all of the $275,000 , $125,000 and $600,000 Senior Notes, respectively, for substantially identical Senior Notes registered under the Securities Act of 1933 via an exchange offer. The fair value of the Senior Notes approximated $1,005,200 on December 31, 2019 based upon quoted market prices (level 1 inputs). In connection with the issuance of the senior notes, Griffon capitalized $21,801 of underwriting fees and other expenses. All capitalized fees for the Senior Notes will amortize over the term of the notes and, at December 31, 2019 , $8,214 remained to be amortized. (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, except that if the Senior Notes are not refinanced prior to December 1, 2021, then the Credit Agreement will mature on December 1, 2021. 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 1.00% for base rate loans and 2.00% 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 December 31, 2019 , under the Credit Agreement, there were $100,117 of outstanding borrowings; outstanding standby letters of credit were $21,129 ; and $228,754 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 December 31, 2019 was $31,783 . (d) Two Griffon subsidiaries have capital leases outstanding for real estate located in Troy, Ohio and Ocala, Florida. The leases mature in 2021 and 2020 , respectively, and bear interest at fixed rates of approximately 5.0% and 8.0% , respectively. The Troy, Ohio lease is secured by a mortgage on the real estate and is guaranteed by Griffon. The Ocala, Florida lease contains two five -year renewal options. At December 31, 2019 , $3,525 was outstanding, net of issuance costs. (e) In November 2012, Garant G.P. (“Garant”) entered into a CAD 15,000 ( $11,480 as of December 31, 2019 ) revolving credit facility. The facility accrues interest at LIBOR (USD) or the Bankers Acceptance Rate (CDN) plus 1.3% per annum ( 3.06% LIBOR USD and 3.29% Bankers Acceptance Rate CDN as of December 31, 2019 ). The revolving facility matures in October 2022. Garant is required to maintain a certain minimum equity. At December 31, 2019 , there were no borrowings under the revolving credit facility with CAD 15,000 ( $11,480 as of December 31, 2019 ) 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 13,375 due upon maturity in March 2022, and accrues interest at Bank Bill Swap Bid Rate “BBSY” plus 1.90% per annum ( 2.87% at December 31, 2019 ). As of December 31, 2019 , the term loan had an outstanding balance of AUD 24,625 ( $17,225 as of December 31, 2019 ). The revolving facility and receivable purchase facility mature in March 2020, but are renewable upon mutual agreement with the lender. The revolving facility and receivable purchase facility accrue interest at BBSY plus 1.8% and 1.0% , respectively, per annum ( 2.72% and 1.92% , respectively, at December 31, 2019 ). At December 31, 2019 , there were no borrowings under the revolver and the receivable purchase facilities had an outstanding balance of AUD 10,000 ( $6,995 as of December 31, 2019 ). 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 7,000 and GBP 2,333 , respectively. The Term Loan and Mortgage Loans accrue interest at the GBP LIBOR Rate plus 2.25% and 1.8% , respectively ( 2.95% and 2.50% at December 31, 2019 , respectively). The revolving facility matures in June 2020, but is renewable upon mutual agreement with the lender, and accrues interest at the Bank of England Base Rate plus 1.5% ( 2.25% as of December 31, 2019 ). As of December 31, 2019 , the revolver had an outstanding balance of GBP 2,264 ( $2,970 as December 31, 2019 ) while the term and mortgage loan balances amounted to GBP 15,398 ( $20,197 as of December 31, 2019). 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 December 31, 2019 , 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 December 31, 2019 Three Months Ended December 31, 2018 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 2022 (a) 5.7 % $ 13,125 $ 67 $ 951 $ 14,143 5.7 % $ 13,125 $ 68 $ 951 $ 14,144 Revolver due 2025 (b) Variable 1,382 — 232 1,614 Variable 933 — 141 1,074 ESOP Loans (c) n/a — — — — 5.5 % 488 — 31 519 Capital lease - real estate (d) 5.6 % 61 — 6 67 5.6 % 115 — 6 121 Non US lines of credit (e) Variable 4 — 4 8 Variable 7 — 4 11 Non US term loans (e) Variable 272 — 12 284 Variable 448 — 27 475 Other long term debt (f) Variable 160 — — 160 Variable 182 — 3 185 Capitalized interest (65 ) — — (65 ) — — — — Totals $ 14,939 $ 67 $ 1,205 $ 16,211 $ 15,298 $ 68 $ 1,163 $ 16,529 (1) n/a = not applicable (a) On October 2, 2017, in an unregistered offering through a private placement under Rule 144A, Griffon completed the add-on offering of $275,000 principal amount of its 5.25% senior notes due 2022, at 101.00% of par, to Griffon's previously issued $125,000 principal amount of its 5.25% senior notes due 2022, at 98.76% of par, completed on May 18, 2016 and $600,000 5.25% senior notes due in 2022, at par, which was completed on February 27, 2014 (collectively the “Senior Notes”). As of December 31, 2019 , 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 February 5, 2018, July 20, 2016 and June 18, 2014, Griffon exchanged all of the $275,000 , $125,000 and $600,000 Senior Notes, respectively, for substantially identical Senior Notes registered under the Securities Act of 1933 via an exchange offer. The fair value of the Senior Notes approximated $1,005,200 on December 31, 2019 based upon quoted market prices (level 1 inputs). In connection with the issuance of the senior notes, Griffon capitalized $21,801 of underwriting fees and other expenses. All capitalized fees for the Senior Notes will amortize over the term of the notes and, at December 31, 2019 , $8,214 remained to be amortized. (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, except that if the Senior Notes are not refinanced prior to December 1, 2021, then the Credit Agreement will mature on December 1, 2021. 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 1.00% for base rate loans and 2.00% 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 December 31, 2019 , under the Credit Agreement, there were $100,117 of outstanding borrowings; outstanding standby letters of credit were $21,129 ; and $228,754 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 December 31, 2019 was $31,783 . (d) Two Griffon subsidiaries have capital leases outstanding for real estate located in Troy, Ohio and Ocala, Florida. The leases mature in 2021 and 2020 , respectively, and bear interest at fixed rates of approximately 5.0% and 8.0% , respectively. The Troy, Ohio lease is secured by a mortgage on the real estate and is guaranteed by Griffon. The Ocala, Florida lease contains two five -year renewal options. At December 31, 2019 , $3,525 was outstanding, net of issuance costs. (e) In November 2012, Garant G.P. (“Garant”) entered into a CAD 15,000 ( $11,480 as of December 31, 2019 ) revolving credit facility. The facility accrues interest at LIBOR (USD) or the Bankers Acceptance Rate (CDN) plus 1.3% per annum ( 3.06% LIBOR USD and 3.29% Bankers Acceptance Rate CDN as of December 31, 2019 ). The revolving facility matures in October 2022. Garant is required to maintain a certain minimum equity. At December 31, 2019 , there were no borrowings under the revolving credit facility with CAD 15,000 ( $11,480 as of December 31, 2019 ) 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 13,375 due upon maturity in March 2022, and accrues interest at Bank Bill Swap Bid Rate “BBSY” plus 1.90% per annum ( 2.87% at December 31, 2019 ). As of December 31, 2019 , the term loan had an outstanding balance of AUD 24,625 ( $17,225 as of December 31, 2019 ). The revolving facility and receivable purchase facility mature in March 2020, but are renewable upon mutual agreement with the lender. The revolving facility and receivable purchase facility accrue interest at BBSY plus 1.8% and 1.0% , respectively, per annum ( 2.72% and 1.92% , respectively, at December 31, 2019 ). At December 31, 2019 , there were no borrowings under the revolver and the receivable purchase facilities had an outstanding balance of AUD 10,000 ( $6,995 as of December 31, 2019 ). 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 7,000 and GBP 2,333 , respectively. The Term Loan and Mortgage Loans accrue interest at the GBP LIBOR Rate plus 2.25% and 1.8% , respectively ( 2.95% and 2.50% at December 31, 2019 , respectively). The revolving facility matures in June 2020, but is renewable upon mutual agreement with the lender, and accrues interest at the Bank of England Base Rate plus 1.5% ( 2.25% as of December 31, 2019 ). As of December 31, 2019 , the revolver had an outstanding balance of GBP 2,264 ( $2,970 as December 31, 2019 ) while the term and mortgage loan balances amounted to GBP 15,398 ( $20,197 as of December 31, 2019). 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 December 31, 2019 , Griffon and its subsidiaries were in compliance with the terms and covenants of all credit and loan agreements.

EARNINGS PER SHARE (EPS) (Table

EARNINGS PER SHARE (EPS) (Tables)	3 Months Ended
	Dec. 31, 2019
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 December 31, 2019 2018 Weighted average shares outstanding - basic 41,173 40,750 Incremental shares from stock based compensation 2,722 1,138 Weighted average shares outstanding - diluted 43,895 41,888

BUSINESS SEGMENTS (Tables)

BUSINESS SEGMENTS (Tables)	3 Months Ended
	Dec. 31, 2019
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 December 31, REVENUE 2019 2018 Consumer and Professional Products $ 241,076 $ 216,474 Home and Building Products 241,381 223,295 Defense Electronics 65,981 70,753 Total consolidated net sales $ 548,438 $ 510,522 For the Three Months Ended December 31, 2019 2018 Segment adjusted EBITDA: Consumer and Professional Products $ 21,926 $ 20,565 Home and Building Products 40,701 31,295 Defense Electronics 4,475 4,785 Segment adjusted EBITDA 67,102 56,645 Unallocated amounts, excluding depreciation (11,942 ) (11,264 ) Adjusted EBITDA 55,160 45,381 Net interest expense (15,950 ) (16,331 ) Depreciation and amortization (15,825 ) (15,085 ) Restructuring charges (6,434 ) — Income before taxes $ 16,951 $ 13,965 Unallocated amounts typically include general corporate expenses not attributable to a reportable segment. For the Three Months Ended December 31, DEPRECIATION and AMORTIZATION 2019 2018 Segment: Consumer and Professional Products $ 8,231 $ 7,806 Home and Building Products 4,800 4,509 Defense Electronics 2,644 2,636 Total segment depreciation and amortization 15,675 14,951 Corporate 150 134 Total consolidated depreciation and amortization $ 15,825 $ 15,085 CAPITAL EXPENDITURES Segment: Consumer and Professional Products $ 3,732 $ 4,334 Home and Building Products 7,939 2,811 Defense Electronics 1,289 1,234 Total segment 12,960 8,379 Corporate 212 18 Total consolidated capital expenditures $ 13,172 $ 8,397 ASSETS At December 31, 2019 At September 30, 2019 Segment assets: Consumer and Professional Products $ 1,235,734 $ 1,070,510 Home and Building Products 589,478 571,216 Defense Electronics 340,788 347,575 Total segment assets 2,166,000 1,989,301 Corporate 88,598 82,429 Total continuing assets 2,254,598 2,071,730 Assets of discontinued operations 3,204 3,209 Consolidated total $ 2,257,802 $ 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 December 31, 2019 2018 Residential repair and remodel $ 35,090 $ 27,158 Retail 119,620 113,365 Residential new construction 14,973 14,272 Industrial 10,623 9,758 International excluding North America 60,770 51,921 Total Consumer and Professional Products 241,076 216,474 Residential repair and remodel 121,997 113,367 Commercial construction 91,887 84,376 Residential new construction 27,497 25,552 Total Home and Building Products 241,381 223,295 U.S. Government 42,701 45,560 International 18,533 22,099 Commercial 4,747 3,094 Total Defense Electronics $ 65,981 $ 70,753 Total Consolidated Revenue $ 548,438 $ 510,522 The following table presents revenue disaggregated by geography based on the location of the Company's customer: For the Three Months Ended December 31, 2019 Revenue by Geographic Area - Destination Consumer and Professional Products Home and Building Products Defense Electronics Total United States $ 160,158 $ 226,950 $ 46,143 $ 433,251 Europe 6,605 23 5,985 12,613 Canada 17,781 11,253 2,574 31,608 Australia 54,228 — 606 54,834 All other countries 2,304 $ 3,155 10,673 16,132 Consolidated revenue $ 241,076 $ 241,381 $ 65,981 $ 548,438 For the Three Months Ended December 31, 2018 Revenue by Geographic Area - Destination Consumer and Professional Products Home and Building Products Defense Electronics Total United States $ 142,916 $ 209,827 $ 48,295 $ 401,038 Europe 7,865 17 10,311 18,193 Canada 19,365 10,981 2,629 32,975 Australia 44,039 184 609 44,832 All other countries 2,289 2,286 8,909 13,484 Consolidated revenue $ 216,474 $ 223,295 $ 70,753 $ 510,522

EMPLOYEE BENEFIT PLANS (Tables)

EMPLOYEE BENEFIT PLANS (Tables)	3 Months Ended
	Dec. 31, 2019
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 December 31, 2019 2018 Interest cost $ 1,151 $ 1,570 Expected return on plan assets (2,586 ) (2,583 ) Amortization: Prior service cost 4 4 Recognized actuarial loss 1,042 222 Net periodic expense (income) $ (389 ) $ (787 )

DISCONTINUED OPERATIONS (Tables

DISCONTINUED OPERATIONS (Tables)	3 Months Ended
	Dec. 31, 2019
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 of Plastics and 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 December 31, 2019 At September 30, 2019 Assets of discontinued operations: Prepaid and other current assets $ 321 $ 321 Other long-term assets 2,883 2,888 Total assets of discontinued operations $ 3,204 $ 3,209 Liabilities of discontinued operations: Accrued liabilities, current $ 3,787 $ 4,333 Other long-term liabilities 3,216 3,331 Total liabilities of discontinued operations $ 7,003 $ 7,664

RESTRUCTURING CHARGES (Tables)

RESTRUCTURING CHARGES (Tables)	3 Months Ended
	Dec. 31, 2019
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 December 31, 2019 Cost of goods and services $ 2,723 Selling, general and administrative expenses 3,711 Total restructuring charges $ 6,434 For the Three Months Ended December 31, 2019 Personnel related costs $ 2,134 Facilities, exit costs and other 140 Non-cash facility and other 4,160 Total $ 6,434
Summary of Accrued Liability for the Restructuring and Related Charges	The following table summarizes the accrued liabilities of the Company's restructuring actions: Personnel related costs Facilities & Non-Cash Facility and Other Costs Total Accrued liability at September 30, 2019 $ — $ — $ — $ — 2020 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 (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)	3 Months Ended
	Dec. 31, 2019
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 December 31, 2019 2018 Balance, beginning of period $ 7,894 $ 8,174 Warranties issued and changes in estimated pre-existing warranties 3,365 4,061 Actual warranty costs incurred (3,915 ) (3,194 ) Balance, end of period $ 7,344 $ 9,041

OTHER COMPREHENSIVE INCOME (L_2

OTHER COMPREHENSIVE INCOME (LOSS) (Tables)	3 Months Ended
	Dec. 31, 2019
OCI, Net of Tax [Abstract]
Summary of Comprehensive Income (Loss)	The amounts recognized in other comprehensive income (loss) were as follows: Three Months Ended December 31, 2019 Three Months Ended December 31, 2018 Pre-tax Tax Net of tax Pre-tax Tax Net of tax Foreign currency translation adjustments $ 6,470 $ — $ 6,470 $ (5,736 ) $ — $ (5,736 ) Pension and other defined benefit plans 847 (175 ) 672 271 (87 ) 184 Cash flow hedges (430 ) 129 (301 ) 157 (55 ) 102 Total other comprehensive income (loss) $ 6,887 $ (46 ) $ 6,841 $ (5,308 ) $ (142 ) $ (5,450 ) The components of Accumulated other comprehensive income (loss) are as follows: At December 31, 2019 At September 30, 2019 Foreign currency translation adjustments $ (24,814 ) $ (31,284 ) Pension and other defined benefit plans (34,142 ) (34,814 ) Change in Cash flow hedges (119 ) 182 $ (59,075 ) $ (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 December 31, Gain (Loss) 2019 2018 Pension amortization $ (1,046 ) $ (226 ) Cash flow hedges (56 ) 682 Total gain (loss) $ (1,102 ) $ 456 Tax benefit (expense) 231 (158 ) Total $ (871 ) $ 298

LEASES (Tables)

LEASES (Tables)	3 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Schedule of Lease Cost	Supplemental cash flow information were as follows: For the Three Months ended December 31, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 12,277 Financing cash flows from finance leases 962 Total $ 13,239 Supplemental Condensed Consolidated Balance Sheet information related to leases were as follows: At December 31, 2019 Operating Leases: Right of use assets: Operating right-of-use assets $ 154,379 Lease Liabilities: Current portion of operating lease liabilities $ 28,292 Long-term operating lease liabilities 130,949 Total operating lease liabilities $ 159,241 Finance Leases: Property, plant and equipment, net (1) $ 5,506 Lease Liabilities: Notes payable and current portion of long-term debt $ 3,144 Long-term debt, net 2,500 Total financing lease liabilities $ 5,644 (1) Finance lease assets are recorded net of accumulated depreciation of $983 . For the Three Months ended December 31, 2019 Fixed $ 9,552 Variable (a), (b) 1,753 Short-term (b) 1,430 Total* $ 12,735 (a) Primarily related to common-area maintenance and property taxes. (b) Not recorded on the balance sheet. Average lease terms and discount rates were as follows: At December 31, 2019 Weighted-average remaining lease term (years) Operating leases 8.8 Finance Leases 2.3 Weighted-average discount rate Operating Leases 4.10 % Finance Leases 5.72 %
Summary of Future Maturities of Lease Payments for Operating Leases	The aggregate future maturities of lease payments for operating leases and finance leases as of December 31, 2019 are as follows (in thousands): Operating Leases Finance Leases 2020 (a) $ 26,011 $ 2,874 2021 30,778 2,156 2022 26,198 572 2023 19,978 224 2024 14,248 — 2025 12,200 — Thereafter 65,898 — Total lease payments 195,311 5,826 Less: Imputed Interest (36,070 ) (182 ) Present value of lease liabilities $ 159,241 $ 5,644 (a) Excluding the three months ended December 31, 2019
Summary of Maturities of Operating Lease Liabilities	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
Schedule of Maturities of Finance Lease Liabilities	The aggregate future maturities of lease payments for operating leases and finance leases as of December 31, 2019 are as follows (in thousands): Operating Leases Finance Leases 2020 (a) $ 26,011 $ 2,874 2021 30,778 2,156 2022 26,198 572 2023 19,978 224 2024 14,248 — 2025 12,200 — Thereafter 65,898 — Total lease payments 195,311 5,826 Less: Imputed Interest (36,070 ) (182 ) Present value of lease liabilities $ 159,241 $ 5,644 (a) Excluding the three months ended December 31, 2019

CONSOLIDATING GUARANTOR AND N_2

CONSOLIDATING GUARANTOR AND NON-GUARANTOR FINANCIAL INFORMATION (Tables)	3 Months Ended
	Dec. 31, 2019
Consolidating Guarantor And Non Guarantor Financial Information [Abstract]
Condensed Consolidating Balance Sheets	CONDENSED CONSOLIDATING BALANCE SHEETS At December 31, 2019 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation CURRENT ASSETS Cash and equivalents $ 3,070 $ 25,532 $ 36,190 $ — $ 64,792 Accounts receivable, net of allowances — 241,261 32,533 (1,222 ) 272,572 Contract costs and recognized income not yet billed, net of progress payments — 94,672 2,154 — 96,826 Inventories, net — 391,447 75,869 (247 ) 467,069 Prepaid and other current assets 11,041 26,573 6,906 (146 ) 44,374 Assets of discontinued operations — — 321 — 321 Total Current Assets 14,111 779,485 153,973 (1,615 ) 945,954 PROPERTY, PLANT AND EQUIPMENT, net 1,313 284,774 46,061 — 332,148 OPERATING LEASE RIGHT-OF-USE ASSETS 10,483 125,259 18,637 — 154,379 GOODWILL — 375,734 70,856 — 446,590 INTANGIBLE ASSETS, net 92 222,536 135,115 — 357,743 INTERCOMPANY RECEIVABLE 40,433 907,715 105,239 (1,053,387 ) — EQUITY INVESTMENTS IN SUBSIDIARIES 1,654,370 495,645 3,353,794 (5,503,809 ) — OTHER ASSETS 8,206 24,343 — (14,444 ) 18,105 ASSETS OF DISCONTINUED OPERATIONS — — 2,883 — 2,883 Total Assets $ 1,729,008 $ 3,215,491 $ 3,886,558 $ (6,573,255 ) $ 2,257,802 CURRENT LIABILITIES Notes payable and current portion of long-term debt $ — $ 2,589 $ 6,862 $ — $ 9,451 Accounts payable and accrued liabilities 48,147 299,912 — (1,078 ) 346,981 Current portion of operating lease liabilities 1,823 22,389 4,080 — 28,292 Liabilities of discontinued operations — — 3,787 — 3,787 Total Current Liabilities 49,970 324,890 14,729 (1,078 ) 388,511 LONG-TERM DEBT, net 1,091,638 2,743 42,753 — 1,137,134 LONG-TERM OPERATING LEASE LIABILITIES 9,816 106,191 14,942 — 130,949 INTERCOMPANY PAYABLES 64,689 527,147 490,808 (1,082,644 ) — OTHER LIABILITIES 18,202 79,514 13,754 (8,171 ) 103,299 LIABILITIES OF DISCONTINUED OPERATIONS — — 3,216 — 3,216 Total Liabilities 1,234,315 1,040,485 580,202 (1,091,893 ) 1,763,109 SHAREHOLDERS’ EQUITY 494,693 2,175,006 3,306,356 (5,481,362 ) 494,693 Total Liabilities and Shareholders’ Equity $ 1,729,008 $ 3,215,491 $ 3,886,558 $ (6,573,255 ) $ 2,257,802 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 December 31, 2019 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation Revenue $ — $ 441,392 $ 117,039 $ (9,993 ) $ 548,438 Cost of goods and services — 327,213 81,678 (10,374 ) 398,517 Gross profit — 114,179 35,361 381 149,921 Selling, general and administrative expenses 6,018 87,848 24,024 (92 ) 117,798 Income (loss) from operations (6,018 ) 26,331 11,337 473 32,123 Other income (expense) Interest income (expense), net (6,324 ) (9,673 ) 47 — (15,950 ) Other, net (97 ) (1,351 ) 2,699 (473 ) 778 Total other income (expense) (6,421 ) (11,024 ) 2,746 (473 ) (15,172 ) Income (loss) before taxes (12,439 ) 15,307 14,083 — 16,951 Provision (benefit) for income taxes (4,395 ) 5,727 5,007 — 6,339 Income (loss) before equity in net income of subsidiaries (8,044 ) 9,580 9,076 — 10,612 Equity in net income (loss) of subsidiaries 18,656 9,196 9,580 (37,432 ) — Net Income (loss) $ 10,612 $ 18,776 $ 18,656 $ (37,432 ) $ 10,612 Comprehensive income (loss) $ 17,453 $ 18,776 $ 18,656 $ (37,432 ) $ 17,453 CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) For the Three Months Ended December 31, 2018 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation Revenue $ — $ 419,244 $ 98,240 $ (6,962 ) $ 510,522 Cost of goods and services — 309,097 65,702 (7,323 ) 367,476 Gross profit — 110,147 32,538 361 143,046 Selling, general and administrative expenses 5,060 84,976 23,817 (99 ) 113,754 Income (loss) from operations (5,060 ) 25,171 8,721 460 29,292 Other income (expense) Interest income (expense), net (6,307 ) (9,130 ) (894 ) — (16,331 ) Other, net (262 ) 687 1,041 (462 ) 1,004 Total other income (expense) (6,569 ) (8,443 ) 147 (462 ) (15,327 ) Income (loss) before taxes (11,629 ) 16,728 8,868 (2 ) 13,965 Provision (benefit) for income taxes (3,535 ) 5,974 2,775 (2 ) 5,212 Income (loss) before equity in net income of subsidiaries (8,094 ) 10,754 6,093 — 8,753 Equity in net income (loss) of subsidiaries 16,847 6,050 10,754 (33,651 ) — Net Income (loss) $ 8,753 $ 16,804 $ 16,847 $ (33,651 ) $ 8,753 Comprehensive income (loss) $ 3,303 $ 53,569 $ (4,551 ) $ (49,018 ) $ 3,303
Condensed Consolidating Statements of Cash Flows	CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Three Months Ended December 31, 2019 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation CASH FLOWS FROM OPERATING ACTIVITIES: Net income (loss) $ 10,612 $ 18,776 $ 18,656 $ (37,432 ) $ 10,612 Net cash provided by (used in) operating activities: (42,309 ) 12,888 11,252 — (18,169 ) CASH FLOWS FROM INVESTING ACTIVITIES: Acquisition of property, plant and equipment (212 ) (12,463 ) (497 ) — (13,172 ) Acquired businesses, net of cash acquired — — (10,531 ) — (10,531 ) Proceeds from sale of assets — 184 — — 184 Net cash provided by (used in) investing activities (212 ) (12,279 ) (11,028 ) — (23,519 ) CASH FLOWS FROM FINANCING ACTIVITIES: Purchase of shares for treasury (1,758 ) — — — (1,758 ) Proceeds from long-term debt 65,329 13 6,615 — 71,957 Payments of long-term debt (16,179 ) (40 ) (15,826 ) — (32,045 ) Financing costs (21 ) — — — (21 ) Dividends paid (3,392 ) — — — (3,392 ) Other, net (37 ) (3 ) — — (40 ) Net cash provided by (used in) financing activities 43,942 (30 ) (9,211 ) — 34,701 CASH FLOWS FROM DISCONTINUED OPERATIONS: Net cash provided by (used) in discontinued operations — — (606 ) — (606 ) Effect of exchange rate changes on cash and equivalents — (264 ) 272 — 8 NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS 1,421 315 (9,321 ) — (7,585 ) CASH AND EQUIVALENTS AT BEGINNING OF PERIOD 1,649 25,217 45,511 — 72,377 CASH AND EQUIVALENTS AT END OF PERIOD $ 3,070 $ 25,532 $ 36,190 $ — $ 64,792 CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS For the Three Months Ended December 31, 2018 ($ in thousands) Parent Company Guarantor Companies Non-Guarantor Companies Elimination Consolidation CASH FLOWS FROM OPERATING ACTIVITIES: Net income (loss) $ 8,753 $ 16,804 $ 16,847 $ (33,651 ) $ 8,753 Net cash provided by (used in) operating activities: (23,532 ) 16,272 8,301 — 1,041 CASH FLOWS FROM INVESTING ACTIVITIES: Acquisition of property, plant and equipment (18 ) (6,935 ) (1,444 ) — (8,397 ) Acquired businesses, net of cash acquired (9,219 ) — — — (9,219 ) Proceeds from sale of assets — 38 13 — 51 Net cash provided by (used in) investing activities (9,237 ) (6,897 ) (1,431 ) — (17,565 ) CASH FLOWS FROM FINANCING ACTIVITIES: Purchase of shares for treasury (1,348 ) — — — (1,348 ) Proceeds from long-term debt 32,412 — 6,553 — 38,965 Payments of long-term debt (569 ) (855 ) (2,898 ) — (4,322 ) Change in short-term borrowings — 38 — — 38 Contingent consideration for acquired businesses — — (1,686 ) — (1,686 ) Financing costs (67 ) — — — (67 ) Dividends paid (3,143 ) — — — (3,143 ) Other, net 137 7,240 (7,240 ) — 137 Net cash provided by (used in) financing activities 27,422 6,423 (5,271 ) — 28,574 CASH FLOWS FROM DISCONTINUED OPERATIONS: Net cash provided by (used in) discontinued operations — — (458 ) — (458 ) Effect of exchange rate changes on cash and equivalents — (55 ) 457 — 402 NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS (5,347 ) 15,743 1,598 — 11,994 CASH AND EQUIVALENTS AT BEGINNING OF PERIOD 15,976 16,353 37,429 — 69,758 CASH AND EQUIVALENTS AT END OF PERIOD $ 10,629 $ 32,096 $ 39,027 $ — $ 81,752

DESCRIPTION OF BUSINESS AND B_3

DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (Details)	3 Months Ended
	Dec. 31, 2019segment
Home and Building Products
Segment Reporting Information [Line Items]
Number of operating segments	3

FAIR VALUE MEASUREMENTS (Detail

FAIR VALUE MEASUREMENTS (Details) - 3 months ended Dec. 31, 2019 $ / shares in Units, £ in Thousands, $ in Thousands, $ in Thousands	USD ($)$ / shares	GBP (£)	AUD ($)	USD ($)
Australian Dollar Forward Contracts | Cost of goods and services
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Losses recorded for settled contracts	$ 56
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			$ 20,000
Contracts weighted average rate price (in dollars per share) | $ / shares	$ 1.43
AOCI currency translation adjustment before tax				$ 202
AOCI currency translation adjustment after tax				$ 119
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	180 days
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 | £		£ 750
Contracts weighted average rate price (in dollars per share) | $ / shares	$ 0.76
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			$ 4,050
Derivative, average forward exchange rate		1.30	1.30	1.30
Not Designated as Hedging Instrument | Canadian Dollar Forward Contracts | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts duration	30 days
Not Designated as Hedging Instrument | Canadian Dollar Forward Contracts | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign currency contracts duration	270 days
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Insurance contracts fair value				$ 3,445
Fair Value, Inputs, Level 2 | Not Designated as Hedging Instrument | Canadian Dollar Forward Contracts
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	$ 72
Fair Value, Inputs, Level 2 | Not Designated as Hedging Instrument | Canadian Dollar Forward Contracts | Other Income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Realized gains (losses)	$ 3
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				2,835
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				2,236
Senior notes due 2022 | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Convertible debt, fair value disclosures				$ 1,005,200

REVENUE - Narrative (Details)

REVENUE - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	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	$ (3,000)	$ (2,500)
Accumulated estimated costs to complete loss contracts	$ 9,828		$ 9,790

REVENUE - Transaction Price All

REVENUE - Transaction Price Allocated to the Remaining Performance Obligations (Details) $ in Thousands	Dec. 31, 2019USD ($)
Revenue from Contract with Customer [Abstract]
Remaining performance obligations (backlog)	$ 370,200
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
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	74.00%
Remaining performance obligations (backlog), expected timing of satisfaction, period	12 months

REVENUE - Contract Balances (De

REVENUE - Contract Balances (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Sep. 30, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract costs and recognized income not yet billed, net of progress payments	$ 96,826	$ 105,111
Decrease in contract assets balance	8,285
Contract costs and recognized income not yet billed, net of progress payments, noncurrent	13,900	13,100
Unbilled receivable reserve	4,100
Billings in excess of costs	21,217
Increase (decrease) in billings in excess of costs	$ (5,042)
Calculated under Revenue Guidance in Effect before Topic 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract costs and recognized income not yet billed, net of progress payments		105,111
Billings in excess of costs		$ 26,259

ACQUISITIONS (Details)

ACQUISITIONS (Details) £ in Thousands	Nov. 29, 2019GBP (£)	Nov. 29, 2019USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Sep. 30, 2019USD ($)
Business Acquisition [Line Items]
Goodwill | $			$ 446,590,000		$ 437,067,000
Acquisition related costs | $			$ 0	$ 0
Vatre Group Limited
Business Acquisition [Line Items]
Percentage of outstanding stock acquired	100.00%
Business combination, consideration transferred	£ 8,150	$ 10,531,000
Goodwill	6,021
Inventory	2,441
Accounts receivable and other assets	1,432
Accrued liabilities	£ 1,744

INVENTORIES - Summary of Invent

INVENTORIES - Summary of Inventories Stated at Lower Cost (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 124,014	$ 121,791
Work in process	100,607	93,830
Finished goods	242,448	226,500
Total	$ 467,069	$ 442,121

PROPERTY, PLANT AND EQUIPMENT -

PROPERTY, PLANT AND EQUIPMENT - Summary of Property Plant and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	$ 770,775	$ 763,542
Accumulated depreciation and amortization	(438,627)	(426,216)
Total	332,148	337,326
Land, building and building improvements
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	143,942	133,036
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	576,230	580,698
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property plant and equipment gross	$ 50,603	$ 49,808

PROPERTY, PLANT AND EQUIPMENT_2

PROPERTY, PLANT AND EQUIPMENT - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 13,432	$ 12,667
Selling, general and administrative expenses
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 4,951	$ 4,681

GOODWILL AND OTHER INTANGIBLE_2

GOODWILL AND OTHER INTANGIBLES - Summary of Changes in Carrying Value of Goodwill (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2019USD ($)
Goodwill [Roll Forward]
September 30, 2019	$ 437,067
Goodwill from acquisitions	7,942
Other adjustments including currency translations	1,581
December 31, 2019	446,590
Consumer and Professional Products
Goodwill [Roll Forward]
September 30, 2019	227,269
Goodwill from acquisitions	7,942
Other adjustments including currency translations	1,581
December 31, 2019	236,792
Home and Building Products
Goodwill [Roll Forward]
September 30, 2019	191,253
Goodwill from acquisitions	0
Other adjustments including currency translations	0
December 31, 2019	191,253
Defense Electronics
Goodwill [Roll Forward]
September 30, 2019	18,545
Goodwill from acquisitions	0
Other adjustments including currency translations	0
December 31, 2019	$ 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	3 Months Ended
	Dec. 31, 2019	Sep. 30, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 204,297	$ 202,682
Accumulated Amortization	67,967	65,112
Trademarks	221,413	219,069
Total intangible assets	425,710	421,751
Customer relationships & other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	184,980	183,515
Accumulated Amortization	$ 60,327	57,783
Average Life (Years)	23 years
Technology and patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 19,317	19,167
Accumulated Amortization	$ 7,640	$ 7,329
Average Life (Years)	13 years

GOODWILL AND OTHER INTANGIBLE_4

GOODWILL AND OTHER INTANGIBLES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense	$ 2,393	$ 2,418
Estimated amortization expense, remainder of 2020	9,593
Estimated amortization expense, fiscal 2021	9,387
Estimated amortization expense, fiscal 2022	9,387
Estimated amortization expense, fiscal 2023	9,234
Estimated amortization expense, fiscal 2024	9,208
Estimated amortization expense, fiscal 2025	9,208
Estimated amortization expense, thereafter	$ 80,313

INCOME TAXES (Details)

INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Provision from income taxes	$ 6,339	$ 5,212
Income before taxes	16,951	13,965
Restructuring charges	6,434
Restructuring charges, net of tax	4,148
Other tax provisions	$ 833	$ 467
Effective tax rate	33.30%	34.00%

LONG-TERM DEBT - Summary of Lon

LONG-TERM DEBT - Summary of Long-Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019	Feb. 05, 2018	Oct. 02, 2017	May 18, 2016	Feb. 27, 2014
Debt Instrument [Line Items]
Outstanding Balance	$ 1,155,352	$ 1,114,131
Less: current portion, outstanding balance	(9,451)	(10,525)
Long-term debt, outstanding balance	1,145,901	1,103,606
Original Issuer Premium	778	867
Less: current portion, original issuer premium, current	0	0
Long-term debt, original issuer premium, noncurrent	778	867
Capitalized Fees & Expenses	(9,545)	(10,724)
Balance Sheet	1,146,585	1,104,274
Less: current portion, balance sheets	(9,451)	(10,525)
Long-term debt, balance sheets	1,137,134	1,093,749
Senior notes due 2022
Debt Instrument [Line Items]
Outstanding Balance	1,000,000	1,000,000
Original Issuer Premium	778	867
Capitalized Fees & Expenses	(8,214)	(9,175)	$ (21,801)
Balance Sheet	$ 992,564	$ 991,692
Coupon Interest Rate	5.25%	5.25%		5.25%	5.25%	5.25%
Revolver due 2025
Debt Instrument [Line Items]
Outstanding Balance	$ 100,117	$ 50,000
Original Issuer Premium	0	0
Capitalized Fees & Expenses	(1,043)	(1,243)
Balance Sheet	99,074	48,757
ESOP Loans
Debt Instrument [Line Items]
Balance Sheet	31,783
Capital lease - real estate
Debt Instrument [Line Items]
Outstanding Balance	3,573	4,388
Original Issuer Premium	0	0
Capitalized Fees & Expenses	(48)	(55)
Balance Sheet	$ 3,525	$ 4,333
Coupon Interest Rate	5.00%	5.00%
Non US lines of credit
Debt Instrument [Line Items]
Outstanding Balance	$ 9,965	$ 17,576
Original Issuer Premium	0	0
Capitalized Fees & Expenses	(42)	(45)
Balance Sheet	9,923	17,531
Non US term loans
Debt Instrument [Line Items]
Outstanding Balance	37,422	36,977
Original Issuer Premium	0	0
Capitalized Fees & Expenses	(181)	(188)
Balance Sheet	37,241	36,789
Other long term debt
Debt Instrument [Line Items]
Outstanding Balance	4,275	5,190
Original Issuer Premium	0	0
Capitalized Fees & Expenses	(17)	(18)
Balance Sheet	$ 4,258	$ 5,172

LONG-TERM DEBT - Summary of Int

LONG-TERM DEBT - Summary of Interest Expense Incurred (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Cash interest, capitalized interest	$ (65)	$ 0
Cash interest	14,939	15,298
Amort. Debt Discount	67	68
Amort. Debt Issuance Costs & Other Fees	1,205	1,163
Total Interest Expense	$ 16,211	$ 16,529
Senior notes due 2022
Debt Instrument [Line Items]
Effective Interest Rate	5.70%	5.70%
Cash interest, including amounts capitalized	$ 13,125	$ 13,125
Amort. Debt Discount	67	68
Amort. Debt Issuance Costs & Other Fees	951	951
Total Interest Expense	14,143	14,144
Revolver due 2025
Debt Instrument [Line Items]
Cash interest, including amounts capitalized	1,382	933
Amort. Debt Discount	0	0
Amort. Debt Issuance Costs & Other Fees	232	141
Total Interest Expense	1,614	$ 1,074
ESOP Loans
Debt Instrument [Line Items]
Effective Interest Rate		5.50%
Cash interest, including amounts capitalized	0	$ 488
Amort. Debt Discount	0	0
Amort. Debt Issuance Costs & Other Fees	0	31
Total Interest Expense	$ 0	$ 519
Capital lease - real estate
Debt Instrument [Line Items]
Effective Interest Rate	5.60%	5.60%
Cash interest, including amounts capitalized	$ 61	$ 115
Amort. Debt Discount	0	0
Amort. Debt Issuance Costs & Other Fees	6	6
Total Interest Expense	67	121
Non US lines of credit
Debt Instrument [Line Items]
Cash interest, including amounts capitalized	4	7
Amort. Debt Discount	0	0
Amort. Debt Issuance Costs & Other Fees	4	4
Total Interest Expense	8	11
Non US term loans
Debt Instrument [Line Items]
Cash interest, including amounts capitalized	272	448
Amort. Debt Discount	0	0
Amort. Debt Issuance Costs & Other Fees	12	27
Total Interest Expense	284	475
Other long term debt
Debt Instrument [Line Items]
Cash interest, including amounts capitalized	160	182
Amort. Debt Discount	0	0
Amort. Debt Issuance Costs & Other Fees	0	3
Total Interest Expense	$ 160	$ 185

LONG-TERM DEBT - Narrative (Det

LONG-TERM DEBT - Narrative (Details) $ in Thousands	Oct. 02, 2017USD ($)	Jun. 30, 2017USD ($)	Mar. 31, 2019AUD ($)	Jul. 31, 2018GBP (£)	Nov. 30, 2012CAD ($)	Dec. 31, 2019USD ($)option	Jan. 30, 2020USD ($)	Jan. 29, 2020USD ($)	Dec. 31, 2019GBP (£)	Dec. 31, 2019AUD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2019CAD ($)	Sep. 30, 2019USD ($)	Mar. 13, 2019USD ($)	Feb. 05, 2018USD ($)	Jul. 20, 2016USD ($)	May 18, 2016USD ($)	Jun. 18, 2014USD ($)	Feb. 27, 2014USD ($)
Debt Instrument [Line Items]
Mortgage loan balance											$ 1,146,585,000		$ 1,104,274,000
Capitalized fees & expenses											9,545,000		$ 10,724,000
Maximum percentage of equity interest of subsidiaries borrowings guaranteed						65.00%
Basis spread on variable rate					1.30%
Long-term line of credit											$ 21,129,000
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									8.00%	8.00%	8.00%	8.00%
Number of option to extend | option						2
Lease renewal term									5 years	5 years	5 years	5 years
London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate				1.80%		2.00%
Revolver due 2025
Debt Instrument [Line Items]
Long-term line of credit											$ 100,117,000
Remaining borrowing capacity											$ 228,754,000
Revolver due 2025 | Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate						1.00%
Term Loan
Debt Instrument [Line Items]
Periodic payment terms, balloon payment to be paid | £				£ 7,000,000
Interest rate at period end									2.95%	2.95%	2.95%	2.95%
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
Long-term line of credit, revolver outstanding balance									£ 2,264,000		$ 2,970,000
Term Loan | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread on variable rate				2.25%
Revolving Credit Facility
Debt Instrument [Line Items]
Basis spread on variable rate				1.50%
Interest rate at period end									2.25%	2.25%	2.25%	2.25%
Revolving Credit Facility | Ames UK
Debt Instrument [Line Items]
Face amount | £				£ 5,000,000
Term and Mortgage Loan July 2018 | Ames UK
Debt Instrument [Line Items]
Mortgage loan balance									£ 15,398,000		$ 20,197,000
Senior notes due 2022
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.25%								5.25%	5.25%	5.25%	5.25%	5.25%				5.25%		5.25%
Face amount																		$ 600,000,000	$ 600,000,000
Mortgage loan balance											$ 992,564,000		$ 991,692,000
Capitalized fees & expenses											8,214,000		9,175,000		$ 21,801,000
Senior notes due 2022 | Fair Value, Inputs, Level 1
Debt Instrument [Line Items]
Convertible debt, fair value disclosures											1,005,200,000
Revolver due 2025
Debt Instrument [Line Items]
Mortgage loan balance											99,074,000		48,757,000
Capitalized fees & expenses											1,043,000		$ 1,243,000
Maximum borrowing capacity														$ 350,000,000
ESOP Loans
Debt Instrument [Line Items]
Mortgage loan balance											$ 31,783,000
Periodic payment terms, balloon payment to be paid		$ 569,000
Debt instrument, periodic payment, principal						$ 635,000
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 instrument, interest rate, stated percentage									5.00%	5.00%	5.00%	5.00%	5.00%
Mortgage loan balance											$ 3,525,000		$ 4,333,000
Capitalized fees & expenses											48,000		55,000
Non US lines of credit
Debt Instrument [Line Items]
Mortgage loan balance											9,923,000		17,531,000
Capitalized fees & expenses											42,000		$ 45,000
Long-term line of credit											0
Remaining borrowing capacity											$ 11,480,000	$ 15,000
Proceeds from long-term lines of credit					$ 15,000	$ 11,480,000
Non US lines of credit | Libor Rate
Debt Instrument [Line Items]
Interest rate at period end									3.06%	3.06%	3.06%	3.06%
Non US lines of credit | Bankers Acceptance Rate
Debt Instrument [Line Items]
Interest rate at period end									3.29%	3.29%	3.29%	3.29%
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)
Term Loan December 2013 and May 2014 | Northcote Holdings Pty. Ltd
Debt Instrument [Line Items]
Basis spread on variable rate			1.90%
Long-term line of credit										$ 24,625,000	$ 17,225,000
Debt instrument, interest rate, effective percentage									2.87%	2.87%	2.87%	2.87%
Mortgages | Ames UK
Debt Instrument [Line Items]
Face amount | £				4,000,000
Periodic payment terms, balloon payment to be paid | £				2,333,000
Debt instrument, periodic payment, principal | £				£ 83,000
Interest rate at period end									2.50%	2.50%	2.50%	2.50%
Senior notes due 2022 | Senior Notes
Debt Instrument [Line Items]
Proceeds from issuance of debt	$ 275,000,000
Face amount															$ 275,000,000
Mortgage loan balance											$ 1,000,000,000
Unamortized debt issuance expense											8,214,000
Senior Notes due 2022, May 2016 Add-On Issuance | Senior Notes
Debt Instrument [Line Items]
Issuance price, percentage	101.00%																98.76%
Face amount																$ 125,000,000	$ 125,000,000
Term Loan Due 2019 | Medium-term Notes
Debt Instrument [Line Items]
Periodic payment terms, balloon payment to be paid			$ 13,375,000
Receivables Purchase Facility
Debt Instrument [Line Items]
Mortgage loan balance										$ 10,000,000	$ 6,995,000
Basis spread on variable rate			1.00%
Debt instrument, interest rate, effective percentage									1.92%	1.92%	1.92%	1.92%
Line of Credit One | Non US lines of credit | Northcote Holdings Pty. Ltd
Debt Instrument [Line Items]
Mortgage loan balance											$ 0
Basis spread on variable rate			1.80%
Debt instrument, interest rate, effective percentage									2.72%	2.72%	2.72%	2.72%
Subsequent Event | 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
Subsequent Event | Letter of Credit Subfacility | Revolver due 2025
Debt Instrument [Line Items]
Maximum borrowing capacity							100,000,000	50,000,000
Subsequent Event | Multicurrency Subfacility | Revolver due 2025
Debt Instrument [Line Items]
Maximum borrowing capacity							$ 200,000,000	$ 100,000,000

SHAREHOLDERS' EQUITY (Details)

SHAREHOLDERS' EQUITY (Details)

Jan. 30, 2020USD ($)senior_executive$ / sharesshares

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

Sep. 30, 2019$ / shares

Jun. 30, 2019$ / shares

Mar. 31, 2019$ / shares

Dec. 31, 2018USD ($)$ / sharesshares

Sep. 30, 2019$ / shares

Mar. 13, 2019USD ($)

Aug. 01, 2018USD ($)

Jan. 31, 2018shares

Aug. 03, 2016USD ($)

Jan. 29, 2016shares

Class of Stock [Line Items]

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

$ 0.0750

$ 0.0725

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%

Stock-based compensation | $

$ 3,150,000

$ 2,933,000

Stock repurchase program, authorized amount | $

$ 50,000,000

$ 50,000,000

Stock repurchase program, remaining authorized repurchase amount | $

$ 57,955,000

Incentive Stock Options

Class of Stock [Line Items]

Number of shares available for grant (in shares)

1,782,950

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

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]

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

79,552

3,307

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

$ 1,688,000

$ 70,000

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

$ 21.22

$ 21.22

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

Subsequent Event | Restricted Stock | Employees, executives

Class of Stock [Line Items]

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

804,674

Subsequent Event | 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

Number of executive officers granted shares | senior_executive

7

Subsequent Event | 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 | $

$ 9,586,000

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

$ 14.52

Number of executive officers granted shares | senior_executive

2

Award post-vesting holding period

2 years

Subsequent Event | 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

Subsequent Event | 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

Subsequent Event | 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

Subsequent Event | Restricted Stock | Non-employees, directors | Tranche One

Class of Stock [Line Items]

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

44,902

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

$ 22.05

Incentive Plan

Class of Stock [Line Items]

Number of shares authorized for award (in shares)

1,000,000

5,050,000

Incentive Plan | Incentive Stock Options

Class of Stock [Line Items]

Number of shares authorized for award (in shares)

600,000

Incentive Plan | Subsequent Event

Class of Stock [Line Items]

Number of additional shares authorized for award (in shares)

1,700,000

Revolver due 2025

Class of Stock [Line Items]

Maximum borrowing capacity | $

$ 350,000,000

Quarterly Dividend

Class of Stock [Line Items]

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

$ 0.075

$ 0.0725

$ 0.0725

$ 0.0725

$ 0.0725

$ 0.29

Quarterly Dividend | Subsequent Event

Class of Stock [Line Items]

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

$ 0.075

EARNINGS PER SHARE (EPS) (Detai

EARNINGS PER SHARE (EPS) (Details) - shares shares in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Weighted average shares outstanding - basic	41,173	40,750
Incremental shares from stock based compensation	2,722	1,138
Weighted average shares outstanding - diluted	43,895	41,888

BUSINESS SEGMENTS - Revenues (D

BUSINESS SEGMENTS - Revenues (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2019USD ($)segment	Dec. 31, 2018USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	3
Revenue	$ 548,438	$ 510,522
Consumer and Professional Products
Segment Reporting Information [Line Items]
Revenue	241,076	216,474
Home and Building Products
Segment Reporting Information [Line Items]
Revenue	241,381	223,295
Defense Electronics
Segment Reporting Information [Line Items]
Revenue	$ 65,981	$ 70,753

BUSINESS SEGMENTS - Disaggregat

BUSINESS SEGMENTS - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 548,438	$ 510,522
United States
Disaggregation of Revenue [Line Items]
Revenue	433,251	401,038
Europe
Disaggregation of Revenue [Line Items]
Revenue	12,613	18,193
Canada
Disaggregation of Revenue [Line Items]
Revenue	31,608	32,975
Australia
Disaggregation of Revenue [Line Items]
Revenue	54,834	44,832
All other countries
Disaggregation of Revenue [Line Items]
Revenue	16,132	13,484
Consumer and Professional Products
Disaggregation of Revenue [Line Items]
Revenue	241,076	216,474
Consumer and Professional Products | United States
Disaggregation of Revenue [Line Items]
Revenue	160,158	142,916
Consumer and Professional Products | Europe
Disaggregation of Revenue [Line Items]
Revenue	6,605	7,865
Consumer and Professional Products | Canada
Disaggregation of Revenue [Line Items]
Revenue	17,781	19,365
Consumer and Professional Products | Australia
Disaggregation of Revenue [Line Items]
Revenue	54,228	44,039
Consumer and Professional Products | All other countries
Disaggregation of Revenue [Line Items]
Revenue	2,304	2,289
Consumer and Professional Products | Residential repair and remodel
Disaggregation of Revenue [Line Items]
Revenue	35,090	27,158
Consumer and Professional Products | Retail
Disaggregation of Revenue [Line Items]
Revenue	119,620	113,365
Consumer and Professional Products | Residential new construction
Disaggregation of Revenue [Line Items]
Revenue	14,973	14,272
Consumer and Professional Products | Industrial
Disaggregation of Revenue [Line Items]
Revenue	10,623	9,758
Consumer and Professional Products | International excluding North America
Disaggregation of Revenue [Line Items]
Revenue	60,770	51,921
Home and Building Products
Disaggregation of Revenue [Line Items]
Revenue	241,381	223,295
Home and Building Products | United States
Disaggregation of Revenue [Line Items]
Revenue	226,950	209,827
Home and Building Products | Europe
Disaggregation of Revenue [Line Items]
Revenue	23	17
Home and Building Products | Canada
Disaggregation of Revenue [Line Items]
Revenue	11,253	10,981
Home and Building Products | Australia
Disaggregation of Revenue [Line Items]
Revenue	0	184
Home and Building Products | All other countries
Disaggregation of Revenue [Line Items]
Revenue	3,155	2,286
Home and Building Products | Residential repair and remodel
Disaggregation of Revenue [Line Items]
Revenue	121,997	113,367
Home and Building Products | Commercial construction
Disaggregation of Revenue [Line Items]
Revenue	91,887	84,376
Home and Building Products | Residential new construction
Disaggregation of Revenue [Line Items]
Revenue	27,497	25,552
Defense Electronics
Disaggregation of Revenue [Line Items]
Revenue	65,981	70,753
Defense Electronics | United States
Disaggregation of Revenue [Line Items]
Revenue	46,143	48,295
Defense Electronics | Europe
Disaggregation of Revenue [Line Items]
Revenue	5,985	10,311
Defense Electronics | Canada
Disaggregation of Revenue [Line Items]
Revenue	2,574	2,629
Defense Electronics | Australia
Disaggregation of Revenue [Line Items]
Revenue	606	609
Defense Electronics | All other countries
Disaggregation of Revenue [Line Items]
Revenue	10,673	8,909
Defense Electronics | U.S. Government
Disaggregation of Revenue [Line Items]
Revenue	42,701	45,560
Defense Electronics | International
Disaggregation of Revenue [Line Items]
Revenue	18,533	22,099
Defense Electronics | Commercial
Disaggregation of Revenue [Line Items]
Revenue	$ 4,747	$ 3,094

BUSINESS SEGMENTS - Segment EBI

BUSINESS SEGMENTS - Segment EBITDA (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Adjusted EBITDA	$ 55,160	$ 45,381
Net interest expense	(15,950)	(16,331)
Depreciation and amortization	(15,825)	(15,085)
Income before taxes	16,951	13,965
Operating Segments
Segment Reporting Information [Line Items]
Adjusted EBITDA	67,102	56,645
Depreciation and amortization	(15,675)	(14,951)
Operating Segments | Consumer and Professional Products
Segment Reporting Information [Line Items]
Adjusted EBITDA	21,926	20,565
Depreciation and amortization	(8,231)	(7,806)
Operating Segments | Home and Building Products
Segment Reporting Information [Line Items]
Adjusted EBITDA	40,701	31,295
Depreciation and amortization	(4,800)	(4,509)
Operating Segments | Defense Electronics
Segment Reporting Information [Line Items]
Adjusted EBITDA	4,475	4,785
Depreciation and amortization	(2,644)	(2,636)
Segment Reconciling Items
Segment Reporting Information [Line Items]
Adjusted EBITDA	11,942	11,264
Net interest expense	(15,950)	(16,331)
Depreciation and amortization	(15,825)	(15,085)
Restructuring charges	$ (6,434)	$ 0

BUSINESS SEGMENTS - Depreciatio

BUSINESS SEGMENTS - Depreciation, Amortization And Capital Expenditures (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
DEPRECIATION and AMORTIZATION	$ 15,825	$ 15,085
CAPITAL EXPENDITURES	13,172	8,397
Operating Segments
Segment Reporting Information [Line Items]
DEPRECIATION and AMORTIZATION	15,675	14,951
CAPITAL EXPENDITURES	12,960	8,379
Corporate
Segment Reporting Information [Line Items]
DEPRECIATION and AMORTIZATION	150	134
CAPITAL EXPENDITURES	212	18
Consumer and Professional Products | Operating Segments
Segment Reporting Information [Line Items]
DEPRECIATION and AMORTIZATION	8,231	7,806
CAPITAL EXPENDITURES	3,732	4,334
Home and Building Products | Operating Segments
Segment Reporting Information [Line Items]
DEPRECIATION and AMORTIZATION	4,800	4,509
CAPITAL EXPENDITURES	7,939	2,811
Defense Electronics | Operating Segments
Segment Reporting Information [Line Items]
DEPRECIATION and AMORTIZATION	2,644	2,636
CAPITAL EXPENDITURES	$ 1,289	$ 1,234

BUSINESS SEGMENTS - Summary of

BUSINESS SEGMENTS - Summary of Segment Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019
Segment Reporting Information [Line Items]
Continuing assets	$ 2,254,598	$ 2,071,730
Assets of discontinued operations	3,204	3,209
Total Assets	2,257,802	2,074,939
Operating Segments
Segment Reporting Information [Line Items]
Continuing assets	2,166,000	1,989,301
Operating Segments | Consumer and Professional Products
Segment Reporting Information [Line Items]
Continuing assets	1,235,734	1,070,510
Operating Segments | Home and Building Products
Segment Reporting Information [Line Items]
Continuing assets	589,478	571,216
Operating Segments | Defense Electronics
Segment Reporting Information [Line Items]
Continuing assets	340,788	347,575
Corporate
Segment Reporting Information [Line Items]
Continuing assets	$ 88,598	$ 82,429

EMPLOYEE BENEFIT PLANS (Details

EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Retirement Benefits [Abstract]
Interest cost	$ 1,151	$ 1,570
Expected return on plan assets	(2,586)	(2,583)
Amortization:
Prior service cost	4	4
Recognized actuarial loss	1,042	222
Net periodic expense (income)	$ (389)	$ (787)

RECENT ACCOUNTING PRONOUNCEME_2

RECENT ACCOUNTING PRONOUNCEMENTS (Details) - USD ($) $ in Thousands		Dec. 31, 2019	Oct. 01, 2019	Oct. 01, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
ROU assets		$ 154,379
Lease liabilities		$ 159,241
Accounting Standards Update 2016-02
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
ROU assets			$ 163,552
Lease liabilities			$ 163,676
Adoption of ASC 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cumulative impact of adoption	[1]			$ 5,673
Retained Earnings | Adoption of ASC 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Cumulative impact of adoption	[1]			$ 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
	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Feb. 06, 2018	Dec. 31, 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
PPC | Discontinued Operations, Disposed of by Sale
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
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	Dec. 31, 2019	Sep. 30, 2019
Assets of discontinued operations:
Total assets of discontinued operations	$ 3,204	$ 3,209
PPC and Installation Services and other discontinued activities | Discontinued Operations
Assets of discontinued operations:
Prepaid and other current assets	321	321
Other long-term assets	2,883	2,888
Total assets of discontinued operations	3,204	3,209
Liabilities of discontinued operations:
Accrued liabilities, current	3,787	4,333
Other long-term liabilities	3,216	3,331
Total liabilities of discontinued operations	$ 7,003	$ 7,664

RESTRUCTURING CHARGES - Narrati

RESTRUCTURING CHARGES - Narrative (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2019USD ($)position
Restructuring Cost and Reserve [Line Items]
Restructuring charges, pre-tax	$ 6,434
Non-cash charges	4,160
Restructuring costs	2,274
Impairment charge, operating lease	1,740
Impairment charge, leasehold improvements	671
Impairment charge, manufacturing assets	$ 1,749
Reduction of headcount | position	28
One-time charges
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	$ 35,000
Capital investments
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	40,000
Cash charges
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	16,000
Personnel related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	12,000
Restructuring charges, pre-tax	2,134
Non-cash charges	0
Restructuring costs	2,134
Facilities, exit costs and other
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	4,000
Restructuring charges, pre-tax	140
Non-cash charges	0
Restructuring costs	140
Asset write-downs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	$ 19,000

RESTRUCTURING CHARGES - Summary

RESTRUCTURING CHARGES - Summary of the Restructuring and Other Related Charges (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2019USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 6,434
Personnel related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,134
Facilities, exit costs and other
Restructuring Cost and Reserve [Line Items]
Restructuring charges	140
Non-cash facility and other
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4,160
Cost of sales
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,723
Selling, general and administrative expenses
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 3,711

RESTRUCTURING CHARGES - Summa_2

RESTRUCTURING CHARGES - Summary of Accrued Liability for the Restructuring and Related Charges (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2019USD ($)
Restructuring Reserve [Roll Forward]
Restructuring reserve	$ 0
2020 restructuring charges	6,434
Cash payments	(761)
Non-cash charges	(4,160)
Restructuring reserve	1,513
Personnel related costs
Restructuring Reserve [Roll Forward]
Restructuring reserve	0
2020 restructuring charges	2,134
Cash payments	(621)
Non-cash charges	0
Restructuring reserve	1,513
Facilities, exit costs and other
Restructuring Reserve [Roll Forward]
Restructuring reserve	0
2020 restructuring charges	140
Cash payments	(140)
Non-cash charges	0
Restructuring reserve	0
Other related costs
Restructuring Reserve [Roll Forward]
Restructuring reserve	0
2020 restructuring charges	4,160
Cash payments	0
Non-cash charges	(4,160)
Restructuring reserve	$ 0

OTHER INCOME (EXPENSE) (Details

OTHER INCOME (EXPENSE) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Other Income and Expenses [Abstract]
Foreign currency transaction gain (loss), before tax	$ (376)	$ 502
Net periodic benefit income	389	787
Investment income, net	81	$ (77)
Contract award income	$ 700

WARRANTY LIABILITY - Narrative

WARRANTY LIABILITY - Narrative (Details)	3 Months Ended
	Dec. 31, 2019
Defense Electronics | Minimum
Product Warranty Liability [Line Items]
Product warranty period	1 year
Defense Electronics | 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
	Dec. 31, 2019	Dec. 31, 2018
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]
Balance, beginning of period	$ 7,894	$ 8,174
Warranties issued and changes in estimated pre-existing warranties	3,365	4,061
Actual warranty costs incurred	(3,915)	(3,194)
Balance, end of period	$ 7,344	$ 9,041

OTHER COMPREHENSIVE INCOME (L_3

OTHER COMPREHENSIVE INCOME (LOSS) - Summary of OCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), pre-tax	$ 6,887	$ (5,308)
Total other comprehensive income (loss), tax	(46)	(142)
Total other comprehensive income (loss), net of taxes	6,841	(5,450)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), pre-tax	6,470	(5,736)
Total other comprehensive income (loss), tax	0	0
Total other comprehensive income (loss), net of taxes	6,470	(5,736)
Pension and other defined benefit plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), pre-tax	847	271
Total other comprehensive income (loss), tax	(175)	(87)
Total other comprehensive income (loss), net of taxes	672	184
Cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total other comprehensive income (loss), pre-tax	(430)	157
Total other comprehensive income (loss), tax	129	(55)
Total other comprehensive income (loss), net of taxes	$ (301)	$ 102

OTHER COMPREHENSIVE INCOME (L_4

OTHER COMPREHENSIVE INCOME (LOSS) - AOCI (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	$ 494,693	$ 477,763	$ 471,561	$ 474,391
Foreign currency translation adjustments
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	(24,814)	(31,284)
Pension and other defined benefit plans
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	(34,142)	(34,814)
Cash flow hedges
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	(119)	182
Accumulated other comprehensive income (loss), attributable to parent
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	$ (59,075)	$ (65,916)	$ (39,562)	$ (34,112)

OTHER COMPREHENSIVE INCOME (L_5

OTHER COMPREHENSIVE INCOME (LOSS) - Amounts Reclassified from AOCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Total gain (loss)	$ 16,951	$ 13,965
Tax benefit (expense)	(6,339)	(5,212)
Net income	10,612	8,753
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)	(1,046)	(226)
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)	(56)	682
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)	(1,102)	456
Tax benefit (expense)	231	(158)
Net income	$ (871)	$ 298

LEASES - Narrative (Details)

LEASES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2019	Oct. 01, 2019
Lessee, Lease, Description [Line Items]
ROU assets	$ 154,379
Lease liabilities	159,241
Impairment charge, operating lease	1,740
Impairment charge, leasehold improvements	$ 671
Accounting Standards Update 2016-02
Lessee, Lease, Description [Line Items]
ROU assets		$ 163,552
Lease liabilities		$ 163,676

LEASES - Schedule of Lease Cost

LEASES - Schedule of Lease Cost (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2019USD ($)
Lease Cost
Fixed	$ 9,552
Variable	1,753
Short-term	1,430
Total	$ 12,735

LEASES - Supplemental Cash Flow

LEASES - Supplemental Cash Flow Information (Details) $ in Thousands	3 Months Ended
	Dec. 31, 2019USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 12,277
Financing cash flows from finance leases	962
Total	$ 13,239

LEASES - Summary of Supplementa

LEASES - Summary of Supplemental Balance Sheet Information (Details) $ in Thousands	Dec. 31, 2019USD ($)
Operating Leases:
Right-of-use assets, other asset	$ 154,379
Current portion of operating lease liabilities	28,292
LONG-TERM OPERATING LEASE LIABILITIES	130,949
Total operating lease liabilities	159,241
Finance Leases:
Property, plant and equipment, net	5,506
Lease liabilities, notes payable and current portion of long-term debt	3,144
Lease liabilities, long-term debt, net	2,500
Total financing lease liabilities	5,644
Accumulated depreciation	$ 983

LEASES - Summary of Future Matu

LEASES - Summary of Future Maturities of Lease Payments for Operating Leases (Details) $ in Thousands	Dec. 31, 2019USD ($)
Operating Leases
2020	$ 26,011
2021	30,778
2022	26,198
2023	19,978
2024	14,248
2025	12,200
Thereafter	65,898
Total lease payments	195,311
Less: Imputed Interest	(36,070)
Present value of lease liabilities	159,241
Finance Leases
2020	2,874
2021	2,156
2022	572
2023	224
2024	0
2025	0
Thereafter	0
Total lease payments	5,826
Less: Imputed Interest	(182)
Present value of lease liabilities	$ 5,644

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)	Dec. 31, 2019
Weighted-average remaining lease term (years)
Operating leases	8 years 9 months 18 days
Finance Leases	2 years 3 months 18 days
Weighted-average discount rate
Operating Leases	4.10%
Finance Leases	5.72%

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)	3 Months Ended
	Dec. 31, 2019
Investment [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
Investment [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	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
CURRENT ASSETS
Cash and equivalents	$ 64,792	$ 72,377
Accounts receivable, net of allowances	272,572	264,450
Contract costs and recognized income not yet billed, net of progress payments	96,826	105,111
Inventories, net	467,069	442,121
Prepaid and other current assets	44,374	40,799
Assets of discontinued operations	321	321
Total Current Assets	945,954	925,179
PROPERTY, PLANT AND EQUIPMENT, net	332,148	337,326
OPERATING LEASE RIGHT-OF-USE ASSETS	154,379
GOODWILL	446,590	437,067
INTANGIBLE ASSETS, net	357,743	356,639
INTERCOMPANY RECEIVABLE	0	0
EQUITY INVESTMENTS IN SUBSIDIARIES	0	0
OTHER ASSETS	18,105	15,840
ASSETS OF DISCONTINUED OPERATIONS	2,883	2,888
Total Assets	2,257,802	2,074,939
CURRENT LIABILITIES
Notes payable and current portion of long-term debt	9,451	10,525
Accounts payable and accrued liabilities	346,981	375,241
Current portion of operating lease liabilities	28,292
Liabilities of discontinued operations	3,787	4,333
Total Current Liabilities	388,511	390,099
LONG-TERM DEBT, net	1,137,134	1,093,749
LONG-TERM OPERATING LEASE LIABILITIES	130,949
INTERCOMPANY PAYABLES	0	0
OTHER LIABILITIES	103,299	109,997
LIABILITIES OF DISCONTINUED OPERATIONS	3,216	3,331
Total Liabilities	1,763,109	1,597,176
SHAREHOLDERS’ EQUITY	494,693	477,763	$ 471,561	$ 474,391
Total Liabilities and Shareholders’ Equity	2,257,802	2,074,939
Reportable Legal Entities | Parent Company
CURRENT ASSETS
Cash and equivalents	3,070	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	11,041	8,238
Assets of discontinued operations	0	0
Total Current Assets	14,111	9,887
PROPERTY, PLANT AND EQUIPMENT, net	1,313	1,184
OPERATING LEASE RIGHT-OF-USE ASSETS	10,483
GOODWILL	0	0
INTANGIBLE ASSETS, net	92	93
INTERCOMPANY RECEIVABLE	40,433	5,834
EQUITY INVESTMENTS IN SUBSIDIARIES	1,654,370	1,628,031
OTHER ASSETS	8,206	8,182
ASSETS OF DISCONTINUED OPERATIONS	0	0
Total Assets	1,729,008	1,653,211
CURRENT LIABILITIES
Notes payable and current portion of long-term debt	0	0
Accounts payable and accrued liabilities	48,147	41,796
Current portion of operating lease liabilities	1,823
Liabilities of discontinued operations	0	0
Total Current Liabilities	49,970	41,796
LONG-TERM DEBT, net	1,091,638	1,040,449
LONG-TERM OPERATING LEASE LIABILITIES	9,816
INTERCOMPANY PAYABLES	64,689	71,634
OTHER LIABILITIES	18,202	21,569
LIABILITIES OF DISCONTINUED OPERATIONS	0	0
Total Liabilities	1,234,315	1,175,448
SHAREHOLDERS’ EQUITY	494,693	477,763
Total Liabilities and Shareholders’ Equity	1,729,008	1,653,211
Reportable Legal Entities | Guarantor Companies
CURRENT ASSETS
Cash and equivalents	25,532	25,217
Accounts receivable, net of allowances	241,261	227,069
Contract costs and recognized income not yet billed, net of progress payments	94,672	104,109
Inventories, net	391,447	372,839
Prepaid and other current assets	26,573	25,754
Assets of discontinued operations	0	0
Total Current Assets	779,485	754,988
PROPERTY, PLANT AND EQUIPMENT, net	284,774	289,282
OPERATING LEASE RIGHT-OF-USE ASSETS	125,259
GOODWILL	375,734	375,734
INTANGIBLE ASSETS, net	222,536	224,275
INTERCOMPANY RECEIVABLE	907,715	864,884
EQUITY INVESTMENTS IN SUBSIDIARIES	495,645	581,438
OTHER ASSETS	24,343	24,635
ASSETS OF DISCONTINUED OPERATIONS	0	0
Total Assets	3,215,491	3,115,236
CURRENT LIABILITIES
Notes payable and current portion of long-term debt	2,589	3,075
Accounts payable and accrued liabilities	299,912	266,411
Current portion of operating lease liabilities	22,389
Liabilities of discontinued operations	0	0
Total Current Liabilities	324,890	269,486
LONG-TERM DEBT, net	2,743	3,119
LONG-TERM OPERATING LEASE LIABILITIES	106,191
INTERCOMPANY PAYABLES	527,147	457,265
OTHER LIABILITIES	79,514	81,582
LIABILITIES OF DISCONTINUED OPERATIONS	0	0
Total Liabilities	1,040,485	811,452
SHAREHOLDERS’ EQUITY	2,175,006	2,303,784
Total Liabilities and Shareholders’ Equity	3,215,491	3,115,236
Reportable Legal Entities | Non-Guarantor Companies
CURRENT ASSETS
Cash and equivalents	36,190	45,511
Accounts receivable, net of allowances	32,533	38,580
Contract costs and recognized income not yet billed, net of progress payments	2,154	1,002
Inventories, net	75,869	69,540
Prepaid and other current assets	6,906	6,951
Assets of discontinued operations	321	321
Total Current Assets	153,973	161,905
PROPERTY, PLANT AND EQUIPMENT, net	46,061	46,860
OPERATING LEASE RIGHT-OF-USE ASSETS	18,637
GOODWILL	70,856	61,333
INTANGIBLE ASSETS, net	135,115	132,271
INTERCOMPANY RECEIVABLE	105,239	75,684
EQUITY INVESTMENTS IN SUBSIDIARIES	3,353,794	3,233,038
OTHER ASSETS	0	(2,352)
ASSETS OF DISCONTINUED OPERATIONS	2,883	2,888
Total Assets	3,886,558	3,711,627
CURRENT LIABILITIES
Notes payable and current portion of long-term debt	6,862	7,450
Accounts payable and accrued liabilities	0	68,390
Current portion of operating lease liabilities	4,080
Liabilities of discontinued operations	3,787	4,333
Total Current Liabilities	14,729	80,173
LONG-TERM DEBT, net	42,753	50,181
LONG-TERM OPERATING LEASE LIABILITIES	14,942
INTERCOMPANY PAYABLES	490,808	444,557
OTHER LIABILITIES	13,754	15,017
LIABILITIES OF DISCONTINUED OPERATIONS	3,216	3,331
Total Liabilities	580,202	593,259
SHAREHOLDERS’ EQUITY	3,306,356	3,118,368
Total Liabilities and Shareholders’ Equity	3,886,558	3,711,627
Elimination
CURRENT ASSETS
Cash and equivalents	0	0
Accounts receivable, net of allowances	(1,222)	(1,199)
Contract costs and recognized income not yet billed, net of progress payments	0	0
Inventories, net	(247)	(258)
Prepaid and other current assets	(146)	(144)
Assets of discontinued operations	0	0
Total Current Assets	(1,615)	(1,601)
PROPERTY, PLANT AND EQUIPMENT, net	0	0
OPERATING LEASE RIGHT-OF-USE ASSETS	0
GOODWILL	0	0
INTANGIBLE ASSETS, net	0	0
INTERCOMPANY RECEIVABLE	(1,053,387)	(946,402)
EQUITY INVESTMENTS IN SUBSIDIARIES	(5,503,809)	(5,442,507)
OTHER ASSETS	(14,444)	(14,625)
ASSETS OF DISCONTINUED OPERATIONS	0	0
Total Assets	(6,573,255)	(6,405,135)
CURRENT LIABILITIES
Notes payable and current portion of long-term debt	0	0
Accounts payable and accrued liabilities	(1,078)	(1,356)
Current portion of operating lease liabilities	0
Liabilities of discontinued operations	0	0
Total Current Liabilities	(1,078)	(1,356)
LONG-TERM DEBT, net	0	0
LONG-TERM OPERATING LEASE LIABILITIES	0
INTERCOMPANY PAYABLES	(1,082,644)	(973,456)
OTHER LIABILITIES	(8,171)	(8,171)
LIABILITIES OF DISCONTINUED OPERATIONS	0	0
Total Liabilities	(1,091,893)	(982,983)
SHAREHOLDERS’ EQUITY	(5,481,362)	(5,422,152)
Total Liabilities and Shareholders’ Equity	$ (6,573,255)	$ (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
	Dec. 31, 2019	Dec. 31, 2018
Condensed Income Statements, Captions [Line Items]
Revenue	$ 548,438	$ 510,522
Cost of goods and services	398,517	367,476
Gross profit	149,921	143,046
Selling, general and administrative expenses	117,798	113,754
Income from operations	32,123	29,292
Other income (expense)
Interest income (expense), net	(15,950)	(16,331)
Other, net	778	1,004
Total other expense, net	(15,172)	(15,327)
Income before taxes	16,951	13,965
Provision (benefit) for income taxes	6,339	5,212
Income (loss) before equity in net income of subsidiaries	10,612	8,753
Equity in net income (loss) of subsidiaries	0	0
Net income	10,612	8,753
Comprehensive income (loss)	17,453	3,303
Reportable Legal Entities | Parent Company
Condensed Income Statements, Captions [Line Items]
Revenue	0	0
Cost of goods and services	0	0
Gross profit	0	0
Selling, general and administrative expenses	6,018	5,060
Income from operations	(6,018)	(5,060)
Other income (expense)
Interest income (expense), net	(6,324)	(6,307)
Other, net	(97)	(262)
Total other expense, net	(6,421)	(6,569)
Income before taxes	(12,439)	(11,629)
Provision (benefit) for income taxes	(4,395)	(3,535)
Income (loss) before equity in net income of subsidiaries	(8,044)	(8,094)
Equity in net income (loss) of subsidiaries	18,656	16,847
Net income	10,612	8,753
Comprehensive income (loss)	17,453	3,303
Reportable Legal Entities | Guarantor Companies
Condensed Income Statements, Captions [Line Items]
Revenue	441,392	419,244
Cost of goods and services	327,213	309,097
Gross profit	114,179	110,147
Selling, general and administrative expenses	87,848	84,976
Income from operations	26,331	25,171
Other income (expense)
Interest income (expense), net	(9,673)	(9,130)
Other, net	(1,351)	687
Total other expense, net	(11,024)	(8,443)
Income before taxes	15,307	16,728
Provision (benefit) for income taxes	5,727	5,974
Income (loss) before equity in net income of subsidiaries	9,580	10,754
Equity in net income (loss) of subsidiaries	9,196	6,050
Net income	18,776	16,804
Comprehensive income (loss)	18,776	53,569
Reportable Legal Entities | Non-Guarantor Companies
Condensed Income Statements, Captions [Line Items]
Revenue	117,039	98,240
Cost of goods and services	81,678	65,702
Gross profit	35,361	32,538
Selling, general and administrative expenses	24,024	23,817
Income from operations	11,337	8,721
Other income (expense)
Interest income (expense), net	47	(894)
Other, net	2,699	1,041
Total other expense, net	2,746	147
Income before taxes	14,083	8,868
Provision (benefit) for income taxes	5,007	2,775
Income (loss) before equity in net income of subsidiaries	9,076	6,093
Equity in net income (loss) of subsidiaries	9,580	10,754
Net income	18,656	16,847
Comprehensive income (loss)	18,656	(4,551)
Elimination
Condensed Income Statements, Captions [Line Items]
Revenue	(9,993)	(6,962)
Cost of goods and services	(10,374)	(7,323)
Gross profit	381	361
Selling, general and administrative expenses	(92)	(99)
Income from operations	473	460
Other income (expense)
Interest income (expense), net	0	0
Other, net	(473)	(462)
Total other expense, net	(473)	(462)
Income before taxes	0	(2)
Provision (benefit) for income taxes	0	(2)
Income (loss) before equity in net income of subsidiaries	0	0
Equity in net income (loss) of subsidiaries	(37,432)	(33,651)
Net income	(37,432)	(33,651)
Comprehensive income (loss)	$ (37,432)	$ (49,018)

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
	Dec. 31, 2019	Dec. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 10,612	$ 8,753
Net cash provided by (used in) operating activities:	(18,169)	1,041
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment	(13,172)	(8,397)
Acquired businesses, net of cash acquired	(10,531)	(9,219)
Proceeds from sale of assets	184	51
Net cash used in investing activities	(23,519)	(17,565)
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury	(1,758)	(1,348)
Proceeds from long-term debt	71,957	38,965
Payments of long-term debt	(32,045)	(4,322)
Change in short-term borrowings	0	38
Contingent consideration for acquired businesses	0	(1,686)
Financing costs	(21)	(67)
Dividends paid	(3,392)	(3,143)
Other, net	(40)	137
Net cash provided by financing activities	34,701	28,574
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash provided by (used) in discontinued operations	(606)	(458)
Effect of exchange rate changes on cash and equivalents	8	402
NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS	(7,585)	11,994
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	72,377	69,758
CASH AND EQUIVALENTS AT END OF PERIOD	64,792	81,752
Reportable Legal Entities | Parent Company
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	10,612	8,753
Net cash provided by (used in) operating activities:	(42,309)	(23,532)
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment	(212)	(18)
Acquired businesses, net of cash acquired	0	(9,219)
Proceeds from sale of assets	0	0
Net cash used in investing activities	(212)	(9,237)
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury	(1,758)	(1,348)
Proceeds from long-term debt	65,329	32,412
Payments of long-term debt	(16,179)	(569)
Change in short-term borrowings		0
Contingent consideration for acquired businesses		0
Financing costs	(21)	(67)
Dividends paid	(3,392)	(3,143)
Other, net	(37)	137
Net cash provided by financing activities	43,942	27,422
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 INCREASE (DECREASE) IN CASH AND EQUIVALENTS	1,421	(5,347)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	1,649	15,976
CASH AND EQUIVALENTS AT END OF PERIOD	3,070	10,629
Reportable Legal Entities | Guarantor Companies
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	18,776	16,804
Net cash provided by (used in) operating activities:	12,888	16,272
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment	(12,463)	(6,935)
Acquired businesses, net of cash acquired	0	0
Proceeds from sale of assets	184	38
Net cash used in investing activities	(12,279)	(6,897)
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury	0	0
Proceeds from long-term debt	13	0
Payments of long-term debt	(40)	(855)
Change in short-term borrowings		38
Contingent consideration for acquired businesses		0
Financing costs	0	0
Dividends paid	0	0
Other, net	(3)	7,240
Net cash provided by financing activities	(30)	6,423
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash provided by (used) in discontinued operations	0	0
Effect of exchange rate changes on cash and equivalents	(264)	(55)
NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS	315	15,743
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	25,217	16,353
CASH AND EQUIVALENTS AT END OF PERIOD	25,532	32,096
Reportable Legal Entities | Non-Guarantor Companies
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	18,656	16,847
Net cash provided by (used in) operating activities:	11,252	8,301
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property, plant and equipment	(497)	(1,444)
Acquired businesses, net of cash acquired	(10,531)	0
Proceeds from sale of assets	0	13
Net cash used in investing activities	(11,028)	(1,431)
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of shares for treasury	0	0
Proceeds from long-term debt	6,615	6,553
Payments of long-term debt	(15,826)	(2,898)
Change in short-term borrowings		0
Contingent consideration for acquired businesses		(1,686)
Financing costs	0	0
Dividends paid	0	0
Other, net	0	(7,240)
Net cash provided by financing activities	(9,211)	(5,271)
CASH FLOWS FROM DISCONTINUED OPERATIONS:
Net cash provided by (used) in discontinued operations	(606)	(458)
Effect of exchange rate changes on cash and equivalents	272	457
NET INCREASE (DECREASE) IN CASH AND EQUIVALENTS	(9,321)	1,598
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	45,511	37,429
CASH AND EQUIVALENTS AT END OF PERIOD	36,190	39,027
Elimination
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	(37,432)	(33,651)
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
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
Change in short-term borrowings		0
Contingent consideration for acquired businesses		0
Financing costs	0	0
Dividends paid	0	0
Other, net	0	0
Net cash provided by 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 INCREASE (DECREASE) IN CASH AND EQUIVALENTS	0	0
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	0	0
CASH AND EQUIVALENTS AT END OF PERIOD	$ 0	$ 0