NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) $ / shares in Units, £ in Thousands												1 Months Ended					9 Months Ended	12 Months Ended
		Sep. 30, 2018 AUD ($)		Apr. 16, 2018 USD ($) $ / shares	Oct. 02, 2017 USD ($)	Jun. 30, 2017 USD ($)	Jan. 17, 2017 USD ($) shares	Jul. 31, 2016 AUD ($) loan	Jul. 14, 2016 USD ($)	Mar. 13, 2015	Feb. 27, 2014 USD ($)	Jul. 31, 2018 GBP (£)	Aug. 31, 2016 USD ($)	Jul. 31, 2016 AUD ($) loan	Nov. 30, 2012 CAD ($)	Oct. 31, 2006 USD ($)	Jun. 30, 2018	Sep. 30, 2018 USD ($) $ / shares		Sep. 30, 2017 USD ($) $ / shares shares	Sep. 30, 2016 USD ($) $ / shares	Sep. 30, 2018 USD ($)		Sep. 30, 2018 CAD ($)		Feb. 05, 2018 USD ($)	Dec. 18, 2017 USD ($)	Sep. 30, 2017 AUD ($)		Sep. 30, 2017 USD ($)		Mar. 31, 2017 AUD ($)	Dec. 31, 2016 AUD ($)	Nov. 30, 2016 AUD ($)	Jul. 20, 2016 USD ($)	May 18, 2016 USD ($)	Mar. 31, 2016 USD ($) property	Mar. 22, 2016 USD ($)	Mar. 21, 2016 USD ($)	Sep. 30, 2015 USD ($)	Jun. 18, 2014 USD ($)	Dec. 21, 2009 USD ($)
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument exercised period																		5 years
Minimum payments under capital leases for 2018																						$ 4,242,000
Minimum payments under capital leases for 2019																						3,764,000
Minimum payments under capital leases for 2020																						2,102,000
Minimum payments under capital leases for 2021																						443,000
Minimum payments under capital leases for 2022																						35,000
Minimum payments under capital leases thereafter																						0
Capital leased assets, gross																						41,742,000								$ 19,238,000
Capital leases, lessee balance sheet, assets by major class, accumulated depreciation																						31,969,000								11,831,000
Deferred interest charges																						80,000								105,000
Amortization																		$ 3,514,000		$ 1,683,000	$ 1,628,000
Proceeds from long-term debt																		$ 443,058,000		$ 233,443,000	302,362,000
Payments to acquire buildings																$ 10,000,000
Capital lease maturity year																2022
Long-term debt, percentage bearing fixed interest, percentage rate																5.00%
Minimum payments under debt agreements for 2018																						13,011,000
Minimum payments under debt agreements for 2019																						43,330,000
Minimum payment under debt engagement for 2020																						6,802,000
Minimum payments under debt agreements for 2021																						5,233,000
Minimum payments under debt agreements for 2022																						4,827,000
Minimum payments under debt agreements thereafter																						1,061,489,000
Debt instrument, face amount													$ 35,092,000
Capitalized fees & expenses																						14,830,000								12,066,000
Underwriting fees and other expense capitalized																					$ 13,329,000
Maximum percentage of equity interest of subsidiaries borrowings guaranteed										65.00%
Line of credit facility, amount outstanding																								$ 0
Debt instrument, basis spread on variable rate															1.30%
Outstanding debt																						1,121,082,000								979,158,000
Long-term debt, gross																						1,134,692,000								992,401,000
Amount of line note available to purchase common stock in open market													$ 10,908,000
Common stock, dividends, per share, cash paid (in Dollars per share) | $ / shares																		$ 0.28		$ 0.24	$ 0.20
Stock issued during period, shares, ESOP | shares																				621,875
Debt instrument, interest rate during period																				5.55%
Issuance of treasury stock in settlement of convertible debt																				$ 48,858,000
Term Loan [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid | £												£ 7,000
Term Loan [Member] | Ames UK [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, face amount | £												14,000
Debt instrument, periodic payment, principal | £												£ 350
Long-term Line of Credit, Noncurrent																						23,987,000
Revolver due 2019 [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Line of credit facility, remaining borrowing capacity																						310,377,000
Revolving Credit Facility [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, basis spread on variable rate		2.25%										1.50%
Revolving Credit Facility [Member] | Ames UK [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, face amount | £												£ 5,000
Letter Of Credit Subfacility [Member] | Revolver due 2019 [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Line of credit facility, current borrowing capacity																																						$ 50,000
Line of credit facility, amount outstanding																						14,623,000
Multicurrency Subfacility [Member] | Revolver due 2019 [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Line of credit facility, current borrowing capacity																																						100,000,000
Margin Rate [Member] | Revolver due 2019 [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Line of credit facility, interest rate during period																		1.75%
LIBOR Rate [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Line of credit facility, interest rate during period																		2.75%
Convert. debt due 2017 [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, face amount																																										$ 100,000,000
Stated percentage																																										4.00%
ESOP Loans [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Stock issued during period, value, ESOP																				$ 10,908,000
ESOP, weighted average purchase price of shares purchased (in Dollars per share) | $ / shares																				$ 17.54
Revolving Facility, June 2017 [Member] | Revolving Credit Facility [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Line of credit facility, amount outstanding		$ 11,000,000																				7,951,000
Maximum borrowing capacity								$ 10,000,000						$ 10,000,000																			$ 20,000	$ 10,000,000
Secured Debt [Member] | Term Loan 1 [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Repayments of Debt				$ 5,705,000
Capital lease - real estate [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Proceeds from long-term debt																$ 14,290,000
Capitalized fees & expenses																						80,000	[1]							105,000	[2]
Outstanding debt																						7,423,000								5,207,000	[2]
Long-term debt, gross																						$ 7,503,000	[1]							$ 5,312,000	[2]
Debt instrument, interest rate during period	[2]																			5.50%	5.50%
Debt instrument, interest rate at period end		5.00%	[1]																			5.00%	[1]	5.00%	[1]			5.00%	[2]	5.00%	[2]
Senior notes [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, face amount																										$ 275,000,000									$ 125,000,000
Senior notes [Member] | Level 1 [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Notes payable, fair value disclosure																						$ 990,000,000
Senior notes [Member] | Reissued Senior Notes [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, face amount																										$ 725,000,000
Senior notes [Member] | Senior Notes due 2022, May 2016 Add-On Issuance [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, face amount					$ 275,000,000																															$ 125,000,000
Issuance price, percentage					101.00%																															98.76%
Senior notes [Member] | Senior note due 2022 [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, face amount											$ 600,000,000
Unamortized debt issuance expense																						14,830,000
Stated percentage											5.25%
Proceeds from issuance of debt					$ 275,000,000
Outstanding debt																						1,000,000,000
Senior notes [Member] | Senior note due 2022 [Member] | Senior notes due 2018 [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, face amount											$ 550,000,000
Stated percentage											7.125%
Payment of tender offer premium											$ 31,530,000
Debt instrument, periodic payment, interest											$ 16,716,000
Senior note due 2022 [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Capitalized fees & expenses																						12,968,000	[3]				$ 8,472,000
Outstanding debt																						988,252,000
Long-term debt, gross	[3]																					$ 1,000,000,000
Debt instrument, interest rate during period																		5.66%	[3]		5.48%
Debt instrument, interest rate at period end	[3]	5.25%																				5.25%		5.25%
Senior Notes Two Thousand Twenty Two [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, face amount																																									$ 600,000,000
Stated percentage					5.25%						5.25%																									5.25%
Original debt, amount									$ 125,000,000
Convertible Notes 2017 [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt Conversion, Converted Instrument, Amount							$ 173,855,000
Debt conversion, converted instrument, cash received							125,000,000
Issuance of treasury stock in settlement of convertible debt							$ 48,858,000
Converted instrument, shares issued | shares							1,954,993,000
Senior notes due 2018 [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Capitalized fees & expenses	[3]																													$ 9,220,000
Outstanding debt	[3]																													714,603,000
Long-term debt, gross	[3]																													$ 725,000,000
Debt instrument, interest rate at period end	[3]																											5.25%		5.25%
Revolver due 2019 [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Capitalized fees & expenses																						$ 1,413,000	[4]							$ 1,951,000	[3]
Line of credit facility, current borrowing capacity																																						$ 350,000	$ 250,000,000
Outstanding debt																						23,587,000	[4]							142,265,000	[3]
Long-term debt, gross																						25,000,000	[4]							144,216,000	[3]
Real estate mortgages [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, face amount																																					$ 8,000,000			$ 32,280,000
Number of secured properties | property																																					4
Capitalized fees & expenses	[5]																													320,000
Debt instrument, description of variable rate basis																		LIBOR plus 2.75%
Debt instrument, basis spread on variable rate																		1.50%
Outstanding debt	[5]																													23,322,000
Long-term debt, gross	[5]																													23,642,000
Debt instrument, interest rate during period	[5]																	3.30%		2.60%	2.20%
ESOP Loans [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Capitalized fees & expenses																						186,000	[2]							310,000	[6]
Debt instrument, description of variable rate basis																		The loan bears interest at a) LIBOR plus 2.38% or b) the lender’s prime rate, at Griffon’s option.
Outstanding debt																						34,508,000								42,365,000	[6]
Long-term debt, gross																						34,694,000	[2]							42,675,000	[6]
Debt instrument, periodic payment, principal						$ 569,000
Debt instrument, interest rate during period	[6]																	6.30%		4.20%	3.10%
Revolver due 2013 [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, description of variable rate basis																		The revolving credit facility accrues interest at EURIBOR plus 2.20% per annum.
Non U.S. term loans [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Capitalized fees & expenses																						148,000	[7]							108,000	[1]
Outstanding debt																						53,385,000								35,835,000	[1]
Long-term debt, gross																						53,533,000	[7]							35,943,000	[1]
Non U.S. lines of credit [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Capitalized fees & expenses	[1]																					16,000								31,000
Line of credit facility, remaining borrowing capacity																						11,498,000		$ 15,000,000
Outstanding debt																						7,935,000								9,371,000	[1]
Long-term debt, gross	[1]																					$ 7,951,000								$ 9,402,000
Proceeds from long-term lines of credit (in Euro)															$ 15,000,000			$ 11,498
Line of credit facility, interest rate description																		The facility accrues interest at LIBOR (USD) or the Bankers Acceptance Rate (CDN) plus 1.3% per annum.
Non U.S. lines of credit [Member] | LIBOR Rate [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Line of credit facility, interest rate at period end		3.70%																				3.70%		3.70%
Non U.S. lines of credit [Member] | Bankers Acceptance Rate [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Line of credit facility, interest rate at period end		3.24%																				3.24%		3.24%
Medium-term Notes [Member] | Term Loan Due 2019 [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, face amount								$ 30,000,000						$ 30,000,000
Number of loans refinanced with new debt instrument | loan								2						2
Line of credit facility, amount outstanding		$ 40,875,000																				$ 29,546,000
Debt instrument, periodic payment, principal														$ 1,250,000
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid								$ 37,125,000						$ 37,125,000
Term Loan May 2014 [Member] | Northcote Holdings Pty. Ltd [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Maximum borrowing capacity increase																												$ 15,000,000				$ 5,000,000
Mortgages [Member] | Ames UK [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, face amount | £												4,000
Debt instrument, periodic payment, principal | £												83
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid | £												£ 2,333
London Interbank Offered Rate (LIBOR) [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, basis spread on variable rate		2.60%										1.80%
London Interbank Offered Rate (LIBOR) [Member] | Term Loan [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, basis spread on variable rate		3.05%										2.25%
London Interbank Offered Rate (LIBOR) [Member] | Secured Debt [Member] | Term Loan 1 [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, basis spread on variable rate						3.00%
Bank Bill Swap Bid Rate [Member] | Revolving Facility, June 2017 [Member] | Revolving Credit Facility [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, basis spread on variable rate														2.00%
Line of credit facility, interest rate at period end		3.90%																				3.90%		3.90%
Bank Bill Swap Bid Rate [Member] | Medium-term Notes [Member] | Term Loan Due 2019 [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, basis spread on variable rate								2.00%
Debt instrument, interest rate at period end		3.99%																				3.99%		3.99%
Sterling Base Rate [Member] | Invoice Discounting Arrangement [Member] | Secured Debt [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Debt instrument, basis spread on variable rate																	2.00%
Special Dividends [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Common stock, dividends, per share, cash paid (in Dollars per share) | $ / shares				$ 1.00
Troy, Ohio [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Long-term debt, percentage bearing fixed interest, percentage rate		5.00%																				5.00%		5.00%
Ocala, Florida [Member]
NOTES PAYABLE, CAPITALIZED LEASES AND LONG-TERM DEBT (Details) [Line Items]
Long-term debt, percentage bearing fixed interest, percentage rate		8.00%																				8.00%		8.00%

[1] In November 2012, Garant G.P. (“Garant”) entered into a CAD 15,000 ($11,498 as of September 30, 2018) revolving credit facility. The facility accrues interest at LIBOR (USD) or the Bankers Acceptance Rate (CDN) plus 1.3% per annum (3.70% LIBOR USD and 3.24% Bankers Acceptance Rate CDN as of September 30, 2018). The revolving facility matures in October 2019. Garant is required to maintain a certain minimum equity. As of September 30, 2018, there were no borrowings under the revolving credit facility with CAD 15,000 ($11,498 as of September 30, 2018) available for borrowin

[2] Two Griffon subsidiaries have capital leases outstanding for real estate located in Troy, Ohio and Ocala, Florida. The leases mature in 2021 and 2022, 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.

[3] 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 101.0% 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 September 30, 2018, outstanding Senior Notes due totaled $1,000,000; interest is payable semi-annually on March 1 and September 1. The net proceeds of the $275,000 add-on offering were used to acquire ClosetMaid with the remaining proceeds used to pay down outstanding loan borrowings under Griffon's Revolving Credit Facility (the "Credit Agreement"). The net proceeds of the previously issued $125,000 add-on offering were used to pay down outstanding revolving loan borrowings under the Credit Agreement.Proceeds from the $600,000 5.25% senior notes due in 2022 were used to redeem $550,000 of 7.125% senior notes due 2018, to pay a call and tender offer premium of $31,530 and to make interest payments of $16,716, with the balance used to pay a portion of the related transaction fees and expenses. In connection with the issuance of the Senior Notes, all obligations under the $550,000 of 7.125% senior notes due in 2018 were discharged. 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 $990,000 on September 30, 2018 based upon quoted market prices (level 1 inputs). In connection with the issuance and exchange of the $275,000 senior notes, Griffon capitalized $8,472 of underwriting fees and other expenses; in addition to $13,329 capitalized under the previously issued $725,000 Senior Notes. All capitalized fees for the Senior Notes will amortize over the term of the notes and, at September 30, 2018, $14,830 remained to be amortized.(b)On March 22, 2016, Griffon amended its Credit Agreement to increase the credit facility from $250,000 to $350,000, extend its maturity from March 13, 2020 to March 22, 2021, and modify certain other provisions of the facility. On October 2, 2017 and on May 31, 2018, Griffon amended the Credit Agreement in connection with the ClosetMaid and the CornellCookson acquisitions, respectively, to modify the net leverage covenant. The facility includes a letter of credit sub-facility with a limit of $50,000 and a multi-currency sub-facility of $100,000. The Credit Agreement provides for same day borrowings of base rate loans. Borrowings under the Credit Agreement may be repaid and re-borrowed at any time, subject to final maturity of the facility or the occurrence of an event of default under the Credit Agreement. Interest is payable on borrowings at either a LIBOR or base rate benchmark rate, in each case without a floor, plus an applicable margin, which adjusts based on financial performance. Current margins are 1.75% for base rate loans and 2.75% 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 (except that a lien on the assets of Griffon’s material domestic subsidiaries securing a limited amount of the debt under the credit agreement relating to Griffon's Employee Stock Ownership Plan ("ESOP") ranks pari passu with the lien granted on such assets under the Credit Agreement; see footnote (e) below). At September 30, 2018, under the Credit Agreement, there were $25,000 outstanding borrowings; outstanding standby letters of credit were $14,623; and $310,377 was available, subject to certain loan covenants, for borrowing at that date

[4] On December 21, 2009, Griffon issued $100,000 principal of 4% convertible subordinated notes due 2017 (the “2017 Notes”). On July 14, 2016, Griffon announced that it would settle, upon conversion, up to $125,000 of the conversion value of the 2017 Notes in cash, with amounts in excess of $125,000, if any, to be settled in shares of Griffon common stock. On January 17, 2017, Griffon settled the convertible debt for $173,855 with $125,000 in cash, utilizing borrowings under the Credit Agreement, and $48,858, or 1,954,993 shares of common stock issued from treasury.(d)

[5] In September 2015 and March 2016, Griffon entered into mortgage loans in the amount of $32,280 and $8,000, respectively, and were due to mature in September 2025 and April 2018, respectively. The mortgage loans were secured and collateralized by four properties occupied by Griffon's subsidiaries and were guaranteed by Griffon. The loans had an interest at a rate of LIBOR plus 1.50%.

[6] In August 2016, Griffon’s ESOP entered into an agreement that refinanced the existing ESOP loan into a new Term Loan in the amount of $35,092 (the "Agreement"). The Agreement also provided for a Line Note with $10,908 available to purchase shares of Griffon common stock in the open market. During 2017, Griffon's ESOP purchased 621,875 shares of common stock for a total of $10,908 or $17.54 per share, under a borrowing line that has now been fully utilized. On June 30, 2017, the Term Loan and Line Note were combined into a single Term Loan. The Term Loan bears interest at LIBOR plus 3.0%. The Term Loan requires quarterly principal payments of $569 with a balloon payment due at maturity on March 22, 2020. As a result of the special cash dividend of $1.00 per share, paid on April 16, 2018, the outstanding balance of the Term Loan was reduced by $5,705. As of September 30, 2018, $34,508, net of issuance costs, was outstanding under the Term Loan. The Term Loan is secured by shares purchased with the proceeds of the loan and with a lien on a specific amount of Griffon assets (which lien ranks pari passu with the lien granted on such assets under the Credit Agreement) and is guaranteed by Griffon.

[7] n July 2016, Griffon Australia Holdings Pty Ltd and its Australian subsidiaries ("Griffon Australia") entered into an AUD 30,000 term loan and an AUD 10,000 revolver. The term loan refinanced two existing term loans and the revolver replaced two existing lines. In December 2016, the amount available under the revolver was increased from AUD 10,000 to AUD 20,000 and, in March 2017 the term loan commitment was increased by AUD 5,000. In September 2017, the term commitment was increased by AUD 15,000. The term loan requires quarterly principal payments of AUD 1,250 plus interest with a balloon payment of AUD 37,125 due upon maturity in October 2019, and accrues interest at Bank Bill Swap Bid Rate “BBSY” plus 2.00% per annum (3.99% at September 30, 2018). As of September 30, 2018, the term had an outstanding balance of AUD 40,875 ($29,546 as of September 30, 2018). The revolving facility matures in March 2019, but is renewable upon mutual agreement with the lender, and accrues interest at BBSY plus 2.0% per annum (3.90% at September 30, 2018). At September 30, 2018, the revolver had an outstanding balance of AUD 11,000 ($7,951 at September 30, 2018). The revolver and the term loan are both secured by substantially all of the assets of Griffon Australia and its subsidiaries. Griffon guarantees the term loan. 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.A UK subsidiary of Griffon maintained an invoice discounting arrangement secured by trade receivables. Interest was variable at 2.0% over the Sterling base rate. This facility was canceled in July 2018. In July 2018, the AMES Companies UK Ltd and its subsidiaries ("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 (3.05% and 2.60% at September 30, 2018, respectively). The revolving facility matures in July 2019, 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 September 30, 2018). 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. The invoice discounting arrangement was canceled and replaced by the above loan facilities. As of September 30, 2018, outstanding borrowings on these facilities totaled $23,987.(h)