The AZEK Company Inc. (AZEK) 10-Q 9 Feb 23 2023 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Dec. 31, 2022	Jan. 31, 2023
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2023
Document Period End Date	Dec. 31, 2022
Current Fiscal Year End Date	--09-30
Entity Registrant Name	AZEK Co Inc.
Entity Central Index Key	0001782754
Entity File Number	001-39322
Entity Tax Identification Number	90-1017663
Entity Interactive Data Current	Yes
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Incorporation, State or Country Code	DE
Entity Emerging Growth Company	false
Entity Address, Address Line One	1330 W Fulton Street, Suite 350
Entity Address, City or Town	Chicago
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60607
City Area Code	877
Local Phone Number	275-2935
Title of 12(b) Security	Class A Common Stock, par value $0.001 per share
Trading Symbol	AZEK
Security Exchange Name	NYSE
Common Class A [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		150,731,275
Common Class B [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		100

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2022	Sep. 30, 2022
Current assets:
Cash and cash equivalents	$ 86,865	$ 120,817
Trade receivables, net of allowances	68,290	90,159
Inventories	320,883	299,905
Prepaid expenses	22,526	17,212
Other current assets	14,946	2,501
Total current assets	513,510	530,594
Property, plant and equipment - net	513,130	517,913
Goodwill	993,995	993,995
Intangible assets - net	233,998	245,835
Other assets	94,068	94,754
Total assets	2,348,701	2,383,091
Current liabilities:
Accounts payable	48,563	48,987
Accrued rebates	54,556	50,479
Accrued interest	140	4,436
Current portion of long-term debt obligations	6,000	6,000
Accrued expenses and other liabilities	67,488	72,589
Total current liabilities	176,747	182,491
Deferred income taxes	66,052	65,195
Long-term debt—less current portion	583,726	584,879
Other non-current liabilities	109,404	106,083
Total liabilities	935,929	938,648
Commitments and contingencies (See Note 17)
Stockholders' equity:
Preferred stock, $0.001 par value; 1,000,000 shares authorized and no shares issued or outstanding at December 31, 2022 and September 30, 2022, respectively
Additional paid‑in capital	1,633,827	1,630,378
Accumulated deficit	(138,838)	(113,002)
Accumulated other comprehensive income (loss)	(1,796)
Treasury stock, at cost, 4,469,330 and 4,116,570 shares at December 31, 2022 and September 30, 2022, respectively	(80,576)	(73,088)
Total stockholders' equity	1,412,772	1,444,443
Total liabilities and stockholders' equity	2,348,701	2,383,091
Common Class A [Member]
Stockholders' equity:
Common stock	$ 155	$ 155

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2022	Sep. 30, 2022
Preferred stock, par value per share	$ 0.001	$ 0.001
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Treasury stock, shares	4,469,330	4,116,570
Common Class A [Member]
Common stock, par value per share	$ 0.001	$ 0.001
Common stock, shares authorized	1,100,000,000	1,100,000,000
Common stock, shares issued	155,196,865	155,157,220
Common Class B [Member]
Common stock, par value per share	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	100	100
Common stock, shares outstanding	100	100

Condensed Consolidated Statemen

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Statement Of Income And Comprehensive Income [Abstract]
Net sales	$ 216,259	$ 259,708
Cost of sales	168,680	171,099
Gross profit	47,579	88,609
Selling, general and administrative expenses	73,444	63,169
Operating income (loss)	(25,865)	25,440
Other expenses:
Interest expense	9,299	4,148
Total other expenses	9,299	4,148
Income (loss) before income taxes	(35,164)	21,292
Income tax expense (benefit)	(9,328)	4,585
Net income (loss)	(25,836)	16,707
Other comprehensive income (loss):
Unrealized gain (loss) due to change in fair value of derivatives, net of tax	(1,796)
Total other comprehensive income (loss)	(1,796)
Comprehensive income (loss)	$ (27,632)	$ 16,707
Net income (loss) per common share:
Basic	$ (0.17)	$ 0.11
Diluted	$ (0.17)	$ 0.11
Weighted-average common shares outstanding:
Basic	150,877,635	154,407,244
Diluted	150,877,635	156,854,925

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Class A [Member]	Common Class B [Member]	Common Stock [Member] Common Class A [Member]	Common Stock [Member] Common Class B [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning balance at Sep. 30, 2021	$ 1,427,164			$ 155			$ 1,615,236	$ (188,227)
Beginning balance (in shares) at Sep. 30, 2021				154,866,313	100
Net income (loss)	16,707							16,707
Stock-based compensation	3,970						3,970
Exercise of vested stock options	3,310						3,310
Exercise of vested stock options (in shares)				143,892
Cancellation of restricted stock awards (in shares)				(4,399)
Issuance of common stock under employee stock plan, net of shares withheld for taxes (in shares)				26,571
Ending balance at Dec. 31, 2021	1,451,151			$ 155			1,622,516	(171,520)
Ending balance (in shares) at Dec. 31, 2021				155,032,377	100
Beginning balance at Sep. 30, 2022	1,444,443			$ 155		$ (73,088)	1,630,378	(113,002)
Beginning balance (in shares) at Sep. 30, 2022				155,157,220
Beginning balance (in shares) at Sep. 30, 2022					100
Beginning balance (in shares) at Sep. 30, 2022		155,157,220	100			4,116,570
Net income (loss)	(25,836)							(25,836)
Other comprehensive income (loss)	(1,796)								$ (1,796)
Stock-based compensation	3,909						3,909
Cancellation of restricted stock awards (in shares)				(14,663)
Issuance of common stock under employee stock plan, net of shares withheld for taxes	(460)						(460)
Issuance of common stock under employee stock plan, net of shares withheld for taxes (in shares)				54,308
Treasury stock purchases	(7,488)					$ (7,488)
Treasury stock purchases (in shares)						352,760
Ending balance at Dec. 31, 2022	$ 1,412,772			$ 155		$ (80,576)	$ 1,633,827	$ (138,838)	$ (1,796)
Ending balance (in shares) at Dec. 31, 2022		155,196,865	100	155,196,865	100	4,469,330

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Operating activities:
Net income (loss)	$ (25,836)	$ 16,707
Adjustments to reconcile net income (loss) to net cash flows provided by (used in) operating activities:
Depreciation	22,002	15,202
Amortization of intangibles	11,837	12,880
Non-cash interest expense	412	1,154
Non-cash lease expense	(56)	(39)
Deferred income tax (benefit) provision	1,504	4,381
Non-cash compensation expense	5,801	3,970
Fair value adjustment for contingent consideration	400
Loss (gain) on disposition of property, plant and equipment	(66)	18
Changes in certain assets and liabilities:
Trade receivables	21,869	18,057
Inventories	(20,978)	(88,515)
Prepaid expenses and other currents assets	(16,711)	(3,330)
Accounts payable	13,029	606
Accrued expenses and interest	(7,831)	(11,626)
Other assets and liabilities	1,033	(85)
Net cash provided by (used in) operating activities	6,409	(30,620)
Investing activities:
Purchases of property, plant and equipment	(30,328)	(65,333)
Proceeds from disposition of fixed assets	65	32
Acquisitions, net of cash acquired		(91,310)
Net cash provided by (used in) investing activities	(30,263)	(156,611)
Financing activities:
Payments on 2022 Term Loan Agreement	(1,500)
Repayments of finance lease obligations	(650)	(559)
Exercise of vested stock options		3,310
Cash paid for shares withheld for taxes	(460)
Purchases of treasury stock	(7,488)
Net cash provided by (used in) financing activities	(10,098)	2,751
Net increase (decrease) in cash and cash equivalents	(33,952)	(184,480)
Cash and cash equivalents – Beginning of period	120,817	250,536
Cash and cash equivalents – End of period	86,865	66,056
Supplemental cash flow disclosure:
Cash paid for interest, net of amounts capitalized	13,020	2,782
Cash paid for income taxes, net	112	(129)
Supplemental non-cash investing and financing disclosure:
Capital expenditures in accounts payable at end of period	16,275	5,748
Right-of-use operating and finance lease assets obtained in exchange for lease liabilities	$ 1,968	$ 8,915

Organization and Summary of Sig

Organization and Summary of Significant Accounting Policies	3 Months Ended
	Dec. 31, 2022
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization and Summary of Significant Accounting Policies	1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES a. Organization The AZEK Company Inc. (the “Company”, “we”, “us” or “our”) is a Delaware corporation that holds all of the limited liability company interests in CPG International LLC, the entity which directly and indirectly holds all of the equity interests in the operating subsidiaries. The Company is an industry-leading designer and manufacturer of beautiful, low-maintenance and environmentally sustainable building products for residential, commercial and industrial markets. The Company’s products include decking, railing, trim, porch, moulding, pavers, bathroom and locker systems, as well as extruded plastic sheet products and other non-fabricated products for special applications in industrial markets. The Company operates in various locations throughout the United States. The Company’s residential products are primarily branded under the brand names AZEK, TimberTech, VERSATEX, ULTRALOX and StruXure, while the commercial products are branded under the brand names Celtec, Playboard, Seaboard, Flametec, Designboard, Cortec, Sanatec, Scranton Products, Aria Partitions, Eclipse Partitions, Hiny Hiders, Tufftec Lockers and Duralife Lockers. b. Summary of Significant Accounting Policies Basis of Presentation The Company operates on a fiscal year ending September 30. The accompanying unaudited Condensed Consolidated Financial Statements and notes have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information, and in management’s opinion, includes all adjustments, consisting of only normal recurring adjustments, necessary for the fair statement of the Company’s financial position, its results of operations and cash flows for the interim periods presented. The results of operations for the three months ended December 31, 2022 and the cash flows for the three months ended December 31, 2022 are not necessarily indicative of the results to be expected for the full fiscal year or any other period. The Company’s financial condition and results of operations are being, and are expected to continue to be affected by the current COVID-19 public health pandemic. The economic effects of the COVID-19 pandemic will likely continue to affect demand for the Company’s products in the foreseeable future. Although management has implemented measures to mitigate any impact of the COVID-19 pandemic on the Company’s business, financial condition and results of operations, these measures may not fully mitigate the impact of the COVID-19 pandemic on the Company’s business, financial condition and results of operations. Management cannot predict the degree to, or the period over, which the Company will be affected by the COVID-19 pandemic and resulting governmental and other measures. The accompanying unaudited Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and notes thereto included in the Company’s 2022 Form 10-K. The Condensed Consolidated Balance Sheet as of September 30, 2022 was derived from the audited financial statements at that date. There have been no material changes in the Company’s significant accounting policies from those that were disclosed in the 2022 Form 10-K, except as noted below. Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Significant estimates include revenue recognition, reserves for excess inventory, inventory obsolescence, inventory valuation, product warranties, customer rebates, stock-based compensation, litigation, income taxes, contingent consideration, goodwill and intangible asset valuation and accounting for long-lived assets. Management’s estimates and assumptions are evaluated on an ongoing basis and are based on historical experience, current conditions and available information. Actual results may differ from estimated amounts. Estimates are revised as additional information becomes available. Accounting Policies Refer to the Company’s 2022 Form 10-K for a discussion of the Company’s accounting policies, as updated below and for recently adopted accounting standards. Derivatives The Company uses interest rate swap agreements to hedge its exposure to interest rate risk on its Senior Secured Credit Facilities. The Company designates derivatives that meet specific accounting criteria as qualifying hedges at inception. These criteria require the Company to have the expectation that the derivative will be highly effective at offsetting changes in the fair value or expected cash flows of the hedged exposure, both at inception of the hedging relationship and on an ongoing basis. The Company recognizes all derivative instruments at fair value and classifies them on the balance sheet as either Other current assets, Other assets, Accrued expenses and other liabilities or Other non-current liabilities. The interest rate swap agreements are designated as cash flow hedges. For cash flow hedges, the Company records the effective portion of the change in fair value of the derivative as part of Accumulated other comprehensive income and recognizes those changes in earnings in the period the hedged transaction affects earnings. The Company recognizes any ineffective portion of the change in the fair value of the derivative immediately in earnings. Refer to Note 11 in the Notes to Condensed Consolidated Financial Statements Research and Development Costs Research and development costs primarily relate to new product development, product claims support and manufacturing process improvements. Such costs are expensed as incurred and are included in “Selling, general and administrative expenses” within the Condensed Consolidated Statements of Comprehensive Income. Total research and development expenses were $2.1 million and $2.0 million, respectively, for the three months ended December 31, 2022 and 2021. Recently Adopted Accounting Pronouncements On October 1, 2021, the Company adopted ASU No. 2019-12, Income Taxes (Topic 740)—Simplifying the Accounting for Income Taxes

Revenue

Revenue	3 Months Ended
	Dec. 31, 2022
Revenue From Contract With Customer [Abstract]
Revenue	2. REVENUE The Company recognizes revenues when control of the promised goods is transferred to the Company’s customers in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods, at a point in time, when shipping occurs. The Company also engages in customer rebates, which are recorded in “Net sales” in the Condensed Consolidated Statements of Comprehensive Income and in “Accrued rebates” and “Trade receivables” in the Condensed Consolidated Balance Sheets. The Company recorded accrued rebates of $54.6 million and $49.1 million as of December 31, 2022 and 2021, respectively, and contra trade receivables of $6.5 million and $4.7 million as of December 31, 2022 and 2021, respectively. The rebate activity was as follows (in thousands): Three Months Ended December 31, 2022 2021 Beginning balance $ 56,542 $ 47,648 Rebate expense 15,716 16,150 Rebate payments (11,192 ) (9,957 ) Ending balance $ 61,066 $ 53,841 The Company records deferred revenue when cash payments are received or due in advance of the Company’s performance.

Business Combinations

Business Combinations	3 Months Ended
	Dec. 31, 2022
Business Combinations [Abstract]
Business Combinations	3. BUSINESS COMBINATIONS On August 1, 2022, the Company acquired INTEX Millwork Solutions, LLC, a New Jersey LLC, or INTEX, for a total purchase price of approximately $25.7 million, which consisted of $19.9 million in cash and $5.8 million in contingent consideration, subject to customary post-closing working capital adjustments. INTEX is located in Mays Landing, New Jersey and manufactures high-quality railing solutions, column wraps and pergolas. We financed the acquisition with cash on hand. The acquisition was accounted for as a business combination under Accounting Standards Codification (“ASC”) 805 Business Combinations The following table represents the preliminary allocation of assets acquired and liabilities assumed on the acquisition date as of December 31, 2022 (in thousands): (US dollars in thousands) Total Cash and cash equivalents $ 4,279 Trade receivables 790 Inventories 1,902 Other current assets 52 Property and equipment 3,612 Intangible assets 9,300 ROU assets 580 Accounts payable (250 ) Accrued expenses (510 ) Current lease liabilities (114 ) Noncurrent lease liabilities (466 ) Total identifiable assets 19,175 Goodwill 6,557 Net assets acquired/total consideration 25,732 Less: cash acquired (4,279 ) Total consideration net of cash acquired $ 21,453 As of the acquisition date, total intangible assets and goodwill amounted to $15.9 million, comprised of $7.3 million related to customer relationships, $1.1 million related to proprietary knowledge and $0.9 million related to trademarks, as well as $6.6 million in goodwill. It is expected that $6.6 million of the goodwill is deductible for tax purposes. The estimated useful life for customer relationships is 12 years, and proprietary knowledge and trademarks is 10 years

Inventories

Inventories	3 Months Ended
	Dec. 31, 2022
Inventory Disclosure [Abstract]
Inventories	4. INVENTORIES Inventories are valued at the lower of cost or net realizable value, and are reduced for slow-moving and obsolete inventory. The inventories cost is recorded at standard cost, which approximates actual cost, on a first-in first-out (“FIFO”) basis. Inventories consisted of the following (in thousands): in thousands December 31, 2022 September 30, 2022 Raw materials $ 66,026 $ 72,464 Work in process 42,190 39,829 Finished goods 212,667 187,612 Total inventories $ 320,883 $ 299,905

Property, Plant and Equipment -

Property, Plant and Equipment - Net	3 Months Ended
	Dec. 31, 2022
Property Plant And Equipment [Abstract]
Property, Plant and Equipment - Net	5. PROPERTY, PLANT AND EQUIPMENT—NET Property, plant and equipment – net consisted of the following (in thousands): December 31, 2022 September 30, 2022 Land and improvements $ 4,829 $ 3,350 Buildings and improvements 115,451 110,300 Manufacturing equipment 565,320 540,536 Computer equipment 28,882 28,198 Furniture and fixtures 7,167 6,867 Vehicles 929 941 Total property and equipment 722,578 690,192 Construction in progress 124,282 140,566 846,860 830,758 Accumulated depreciation (333,730 ) (312,845 ) Total property and equipment – net $ 513,130 $ 517,913 Depreciation expense was approximately $22.0 million and $15.2 million in the three months ended December 31, 2022 and 2021, respectively. During the three months ended December 31, 2022 and 2021, $1.3 million and $1.1 million of interest was capitalized, respectively.

Goodwill and Intangible Assets

Goodwill and Intangible Assets - Net	3 Months Ended
	Dec. 31, 2022
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets - Net	6. GOODWILL AND INTANGIBLE ASSETS—NET Goodwill Goodwill consisted of the following (in thousands): Residential Commercial Total Goodwill as of September 30, 2022 $ 953,606 $ 40,389 $ 993,995 Acquisitions — — — Goodwill as of December 31, 2022 $ 953,606 $ 40,389 $ 993,995 Accumulated impairment losses as of September 30, 2022 — 32,200 32,200 Accumulated impairment losses as of December 31, 2022 $ — $ 32,200 $ 32,200 Intangible assets, net The Company did not have any indefinite lived intangible assets other than goodwill as of December 31, 2022 and September 30, 2022. Finite-lived intangible assets consisted of the following (in thousands): December 31, 2022 Lives in Years Gross Carrying Value Accumulated Amortization Net Carrying Value Proprietary knowledge 10 — 15 $ 300,400 $ (240,484 ) $ 59,916 Trademarks 5 — 20 230,240 (154,692 ) 75,548 Customer relationships 12 — 19 176,852 (81,672 ) 95,180 Patents 9 — 10 8,500 (5,216 ) 3,284 Other intangibles 3 — 15 4,076 (4,006 ) 70 Total intangible assets $ 720,068 $ (486,070 ) $ 233,998 September 30, 2022 Lives in Years Gross Carrying Value Accumulated Amortization Net Carrying Value Propriety knowledge 10 — 15 $ 300,400 $ (236,024 ) $ 64,376 Trademarks 5 — 20 230,240 (151,259 ) 78,981 Customer relationships 12 — 19 176,852 (78,015 ) 98,837 Patents 9 — 10 8,500 (4,950 ) 3,550 Other intangible assets 3 — 15 4,076 (3,985 ) 91 Total intangible assets $ 720,068 $ (474,233 ) $ 245,835 Amortization expense was $11.8 million and $12.9 million in the three months ended December 31, 2022 and 2021, respectively. As of December 31, 2022, the remaining weighted-average amortization period for acquired intangible assets was 11.3 years.

Composition of Certain Balance

Composition of Certain Balance Sheet Accounts	3 Months Ended
	Dec. 31, 2022
Composition Of Certain Balance Sheet Accounts Disclosure [Abstract]
Composition of Certain Balance Sheet Accounts	7. COMPOSITION OF CERTAIN BALANCE SHEET ACCOUNTS Allowance for Doubtful Accounts Allowance for doubtful accounts consisted of the following (in thousands): Three Months Ended December 31, 2022 2021 Beginning balance $ 1,397 $ 1,109 Provision 277 (45 ) Bad debt write-offs — 10 Ending balance $ 1,674 $ 1,074 Accrued Expenses and Other Liabilities Accrued expenses consisted of the following (in thousands): December 31, 2022 September 30, 2022 Employee related liabilities $ 31,627 $ 36,866 Construction in progress 9,236 9,032 Marketing 5,379 4,272 Lease liability - operating 5,119 5,223 Lease liability - finance 2,524 2,366 Warranty 2,492 2,900 Freight 2,384 1,821 Customer deposits 1,787 2,494 Professional fees 1,466 2,089 Other 5,474 5,526 Total accrued expenses and other current liabilities $ 67,488 $ 72,589

Debt

Debt	3 Months Ended
	Dec. 31, 2022
Debt Disclosure [Abstract]
Debt	8. DEBT Debt consisted of the following (in thousands): December 31, 2022 September 30, 2022 2022 Term Loan due April 28, 2029 — SOFR + 2.50% $ 598,500 $ 600,000 Revolving Credit Facility through March 31, 2026 - LIBOR + 1.25% — — Total 598,500 600,000 Less unamortized deferred financing costs (4,533 ) (4,712 ) Less unamortized original issue discount (4,241 ) (4,409 ) Less current portion (6,000 ) (6,000 ) Long-term debt—less current portion and unamortized deferred financing costs $ 583,726 $ 584,879 Term Loan Agreements The term loan agreement, as amended and restated from time to time (the “Term Loan Agreement”), was a first lien term loan originally entered into on September 30, 2013 by the Company’s wholly-owned subsidiary, CPG International LLC (as successor-in-interest to CPG Merger Sub LLC), as the initial borrower with a syndicate of lenders party thereto. On April 28, 2022, the obligations under the Term Loan Agreement were paid off in full and the Term Loan Agreement was terminated. On April 28, 2022, CPG International LLC entered into a new $600.0 million first lien term loan credit agreement (the “2022 Term Loan Agreement”), the proceeds of which were applied, among other uses, to prepay the obligations of the Term Loan Agreement in full. The 2022 Term Loan Agreement is a first lien term loan and will mature on April 28, 2029, subject to acceleration or prepayment. The 2022 Term Loan Agreement will amortize in equal quarterly installments of 0.25% of the aggregate principal amount of the loans outstanding, subject to reduction for certain prepayments. The loans thereunder bear an interest rate equal to (i) in the case of ABR borrowings, the highest of (a) the Federal Funds Rate plus 0.50%, (b) the Prime Rate as in effect on such day and (c) the one-month Term SOFR rate plus 1.00% per annum, provided that in no event will the alternative base rate be less than 1.50% per annum, plus an applicable margin of 1.50% and (ii) in the case of SOFR borrowings, the Term SOFR rate for the applicable interest period, in each case, plus an applicable margin of 2.50%. As of December 31, 2022 and September 30, 2022, CPG International LLC had $598.5 million and $600.0 million outstanding under the 2022 Term Loan Agreement. The obligations under the 2022 Term Loan Agreement are secured by a first priority security interest in the membership interests of CPG International LLC owned by the Company, the equity interests of CPG International LLC’s domestic subsidiaries, other than certain immaterial subsidiaries and other excluded subsidiaries, and all remaining assets not constituting Revolver Priority Collateral (as defined below and subject to certain exceptions) of the Company, CPG International LLC and the subsidiaries of CPG International LLC that are guarantors under the 2022 Term Loan Agreement (the “Term Loan Priority Collateral”), and a second priority security interest in the Revolver Priority Collateral. The obligations under the 2022 Term Loan Agreement are guaranteed by the Company and the wholly owned domestic subsidiaries of CPG International LLC other than certain immaterial subsidiaries and other excluded subsidiaries. Loans under the 2022 Term Loan Agreement may be voluntarily prepaid in whole, or in part, in each case without premium or penalty (other than the Prepayment Premium, as defined in , if applicable) The 2022 Term Loan Agreement contains affirmative covenants, negative covenants and events of default, which are broadly consistent with those in the Revolving Credit Facility (with certain differences consistent with the differences between a revolving loan and term loan) and that are customary for facilities of this type. The 2022 Term Loan Agreement does not have any financial maintenance covenants. The 2022 Term Loan Agreement also includes customary events of default, including the occurrence of a change of control. As of December 31, 2022, and September 30, 2022, unamortized deferred financing fees related to the 2022 Term Loan Agreement were $4.5 million and $4.7 million, respectively. Revolving Credit Facility CPG International LLC has also entered into a revolving credit facility, as amended and restated from time to time (the “Revolving Credit Facility”), with certain of our direct and indirect subsidiaries and certain lenders party thereto. The Revolving Credit Facility provides for maximum aggregate borrowings of up to $150.0 million, subject to an asset-based borrowing base. The borrowing base is limited to a set percentage of eligible accounts receivable and inventory, less reserves that may be established by the administrative agent and the collateral agent in the exercise of their reasonable credit judgment. CPG International LLC had no outstanding borrowings under the Revolving Credit Facility as of December 31, 2022 and September 30, 2022, respectively. In addition, CPG International LLC had $2.8 million of outstanding letters of credit held against the Revolving Credit Facility as of both December 31, 2022 and September 30, 2022. CPG International LLC had approximately $147.2 million available under the borrowing base for future borrowings as of December 31, 2022. CPG International LLC also has the option to increase the commitments under the Revolving Credit Facility by up to $100.0 million, subject to certain conditions. On March 31, 2021, CPG International LLC amended the Revolving Credit Facility, resulting in a repricing and extension thereof. Pursuant to such amendment, the interest rate has been reduced by 25 basis points to (i) for ABR borrowings, the highest of (a) the Federal Funds Rate plus 50 basis points, (b) the prime rate and (c) the LIBOR as of such date for a deposit in U.S. dollars with a maturity of one month plus 100 basis points, plus, in each case, a spread of 25 to 75 basis points, based on average historical availability, or (ii) for Eurocurrency borrowings, adjusted LIBOR plus a spread of 125 to 175 basis points, based on average historical availability. The maturity date for the Revolving Credit Facility was extended from May 9, 2022 to the earlier of March 31, 2026 and the date that is 91 days prior to the maturity of the Term Loan Agreement or any permitted refinancing thereof. On January 26, 2023, CPG International LLC further amended the Revolving Credit Facility, replacing all LIBOR-based provisions with provisions reflecting the Secured Overnight Financing Rate (“SOFR”), including, without limitation, the use of a new Adjusted Term SOFR benchmark rate equal to Term SOFR (as defined in the Revolving Credit Agreement) plus 0.10%. Deferred financing costs, net of accumulated amortization, related to the Revolving Credit Facility at December 31, 2022 and September 30, 2022 were $0.9 million and $0.9 million, respectively. A “commitment fee” accrues on any unused portion of the commitments under the Revolving Credit Facility during the preceding three calendar month period. If the average daily used percentage is greater than 50%, the commitment fee equals 25 basis points, and if the average daily used percentage is less than or equal to 50%, the commitment fee equals 37.5 basis points. The commitment fees were $0.1 million and $0.1 million for the three months ended December 31, 2022 and 2021, respectively. The obligations under the Revolving Credit Facility are guaranteed by the Company and its wholly owned domestic subsidiaries other than certain immaterial subsidiaries and other excluded subsidiaries. The obligations under the Revolving Credit Facility are secured by a first priority security interest in substantially all of the accounts receivable, inventory, deposit accounts, securities accounts and cash assets of the Company, CPG International LLC and the subsidiaries of CPG International LLC that are guarantors under the Revolving Credit Facility, and the proceeds thereof (subject to certain exceptions) (the “Revolver Priority Collateral”), plus a second priority security interest in all of the Term Loan Priority Collateral. The Revolving Credit Facility may be voluntarily prepaid in whole, or in part, in each case without premium or penalty. CPG International LLC is also required to make mandatory prepayments (i) when aggregate borrowings exceed commitments or the applicable borrowing base and (ii) during “cash dominion,” which occurs if (a) the availability under the Revolving Credit Facility is less than the greater of (i) $12.5 million and (ii) 10% of the lesser of (x) $150.0 million and (y) the borrowing base, for five consecutive business days or (b) certain events of default have occurred and are continuing. The Revolving Credit Facility contains affirmative covenants that are customary for financings of this type, including allowing the Revolver Administrative Agent to perform periodic field exams and appraisals to evaluate the borrowing base. The Revolving Credit Facility contains various negative covenants, including limitations on, subject to certain exceptions, the incurrence of indebtedness, the incurrence of liens, dispositions, investments, acquisitions, restricted payments, transactions with affiliates, as well as other negative covenants customary for financings of this type. The Revolving Credit Facility also includes a financial maintenance covenant, applicable only when the excess availability is less than the greater of (i) 10% of the lesser of the aggregate commitments under the Revolving Credit Facility and the borrowing base, and (ii) $12.5 million. In such circumstances, CPG International LLC would be required to maintain a minimum fixed charge coverage ratio (as defined in the Revolving Credit Facility) for the trailing four quarters equal to at least 1.0 to 1.0; subject to CPG International LLC’s ability to make an equity cure (no more than twice in any four quarter period and up to five times over the life of the facility). As of December 31, 2022, CPG International LLC was in compliance with the financial and nonfinancial covenants imposed by the Revolving Credit Facility. The Revolving Credit Facility also includes customary events of default, including the occurrence of a change of control. Interest expense consisted of the following (in thousands): Three Months Ended December 31, 2022 2021 Interest expense 2022 Term Loan Agreement $ 8,916 $ — Term Loan Agreement — 3,884 Revolving Credit Facility 151 163 Other 1,109 866 Amortization - Debt issue costs 2022 Term Loan Agreement 179 — Term Loan Agreement — 254 Revolving Credit Facility 66 66 2022 Term Loan OID 167 — Term Loan OID — 30 Capitalized interest (1,289 ) (1,115 ) Interest expense $ 9,299 $ 4,148 See Note 11 for the fair value of the Company’s debt as of December 31, 2022 and September 30, 2022.

Product Warranties

Product Warranties	3 Months Ended
	Dec. 31, 2022
Product Warranties Disclosures [Abstract]
Product Warranties	9. PRODUCT WARRANTIES The Company provides product assurance warranties of various lengths ranging from 5 years to lifetime for limited coverage for a variety of material and workmanship defects based on standard terms and conditions between the Company and its customers. Warranty coverage depends on the product involved. The warranty reserve activity consisted of the following (in thousands): Three Months Ended December 31, 2022 2021 Beginning balance $ 15,023 $ 12,699 Adjustments to reserve (172 ) 467 Warranty claims payment (313 ) (485 ) Accretion - purchase accounting valuation — — Ending balance 14,538 12,681 Current portion of accrued warranty (2,492 ) (2,885 ) Accrued warranty – less current portion $ 12,046 $ 9,796

Leases

Leases	3 Months Ended
	Dec. 31, 2022
Leases [Abstract]
Leases	10. LEASES The Company leases vehicles, machinery, manufacturing facilities, office space, land, and equipment under both operating and finance leases. We sublease excess office real estate to a third-party tenant. The Company determines if an arrangement is a lease at inception. A contract is or contains a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. As of December 31, 2022 and September 30, 2022, amounts associated with leases are included in Other assets, Accrued expense and other liabilities and Other non-current liabilities in the Company’s Condensed Consolidated Balance Sheet. For leases with initial terms greater than 12 months, the Company considers these right-of-use assets and records the related asset and obligation at the present value of lease payments over the term. For leases with initial terms equal to or less than 12 months, the Company does not consider them as right-of-use assets and instead considers them short-term lease costs that are recognized on a straight-line basis over the lease term. The Company’s leases may include escalation clauses, renewal options and/or termination options that are factored into the determination of lease term and lease payments when it is reasonably certain the option will be exercised. Renewal options range from 1 year to 20 years. Lease assets and lease liabilities as of December 31, 2022 and September 30, 2022 were as follows (in thousands): Leases Classification on Balance Sheet December 31, 2022 September 30, 2022 Assets ROU operating lease assets Other assets $ 18,670 $ 19,724 Finance lease assets Other assets 74,035 73,541 Total lease assets $ 92,705 $ 93,265 Liabilities Current Operating Accrued expenses and other liabilities $ 5,119 $ 5,223 Finance Accrued expenses and other liabilities 2,524 2,366 Non-Current Operating Other non-current liabilities 16,255 17,261 Finance Other non-current liabilities 76,639 75,706 Total lease liabilities $ 100,537 $ 100,556 The components of lease expense for the three months ended December 31, 2022 and 2021 were as follows: Three Months Ended December 31, (in thousands) 2022 2021 Operating lease expense $ 1,501 $ 1,170 Finance lease amortization of assets 1,248 717 Finance lease interest on lease liabilities 1,092 804 Short term 103 42 Sublease income (71 ) (119 ) Total lease expense $ 3,873 $ 2,614 The tables below present supplemental information related to leases as of December 31, 2022 and Weighted-average remaining lease term (years) December 31, 2022 September 30, 2022 Operating leases 6.8 6.9 Finance leases 26.0 26.5 Weighted-average discount rate Operating leases 4.2 % 4.1 % Finance leases 5.9 % 5.9 % The following table summarizes the maturities of lease liabilities at December 31, 2022: (in thousands) Operating Leases Finance Leases Total 2023 $ 4,555 $ 5,153 $ 9,708 2024 4,636 6,741 11,377 2025 3,780 6,629 10,409 2026 2,497 6,476 8,973 2027 1,877 6,070 7,947 Thereafter 7,695 122,216 129,911 Total lease payments 25,040 153,285 178,325 Less: interest (3,666 ) (74,122 ) (77,788 ) Present value of lease liability $ 21,374 $ 79,163 $ 100,537

Fair Value of Financial Instrum

Fair Value of Financial Instruments	3 Months Ended
	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	11. FAIR VALUE OF FINANCIAL INSTRUMENTS FASB Accounting Standards Codification (“ASC”) requirements for Fair Value Measurements and Disclosures establish a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into three levels. Level 1 inputs, the highest priority, are quoted prices in active markets for identical assets or liabilities. Level 2 inputs reflect other than quoted prices included in Level 1 that are either observable directly or through corroboration with observable market data. Level 3 inputs are unobservable inputs, due to little or no market activity for the asset or liability, such as internally-developed valuation models. We do not have any assets or liabilities measured at fair value on a recurring basis that are Level 3. Derivative Instruments The Company’s objective in using interest rate derivative instruments is to hedge against interest rate volatility associated with its Senior Secured Credit Facilities by converting a portion of its floating rate debt to fixed rate debt. In November 2022, the Company entered into two interest rate swap agreements with Barclays Bank PLC (“Barclays”) to manage interest rate risk related to 2022 Term Loan. Each agreement has a notional amount of $150 million and will expire on October 31, 2025. One agreement swaps variable interest at a rate based on SOFR with a fixed rate of 4.39% and the second with a fixed rate of 4.48%. At the inceptions of the swap agreements and as of December 31, 2022, both swaps were designated and qualified as cash flow hedges in accordance with ASC 815. Their gain (loss) is recorded in Accumulated other comprehensive income (loss) and then reclassified into Interest expense in the same period in which the hedged transaction affects earnings. As of December 31, 2022, the Company expects to reclass approximately $1.0 million ($0.7 million after-tax) as a reduction to interest expense in the next 12 months. The following table provides the fair values of the interest rate derivative instruments as well as their classification on the Balance Sheet as of December 31, 2022 and September 30, 2022 (in thousands): Fair Value as of Fair Value Hierarchy Balance Sheet Location December 31, 2022 September 30, 2022 Assets Interest rate swaps Level 2 Other current assets $ 1,048 $ — Liabilities Interest rate swaps Level 2 Other non-current liabilities $ 3,491 $ — The Company estimates the fair value of interest rate swaps using a valuation model based on observable market data, such as yield curves. Both swaps are classified as Level 2 measurement in the fair value hierarchy. The following table provides the effects of the interest rate derivative instruments in Statements of Income and on Accumulated other comprehensive income (loss) as of December 31, 2022 and 2021 (in thousands): Cash Flow Hedge - Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss) Location of Gain (Loss) Reclassified from Accumulated Other Cash Flow Hedge - Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) Three Months Ended December 31, Comprehensive Income (Loss) Three Months Ended December 31, 2022 2021 into Income 2022 2021 Interest rate swaps $ (1,796 ) $ — Interest expense $ (74 ) $ — Other Financial Instruments The carrying values and the estimated fair values of the debt financial instruments (Level 2 measurements) consisted of the following (in thousands): December 31, 2022 September 30, 2022 Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value 2022 Term Loan due April 28, 2029 $ 598,500 $ 586,530 $ 600,000 $ 586,500 Financial instruments remeasure at fair value on a recurring basis – During the year ended September 30, 2022, the Company entered into an arrangement for a contingent payment to the former owner and employee of StruXure. The contingent payment is based on achievement of a minimum EBITDA amount and a multiple of EBITDA, for EBITDA exceeding a higher threshold for calendar year 2022. Based on the formula, the potential contingent payout can range from zero to $13.9 million. At the date of acquisition, the fair value was estimated to be $9.5 million. As of December 31, 2022, the fair value was increased to $11.4 million based on the actual EBITDA amount for StruXure. Compensation expense of $9.5 million was recognized for the year ended September 30, 2022 and $1.9 million was recognized for the three months ended December 31, 2022. In connection with the acquisition of INTEX on August 1, 2022, the Company entered into a contingent consideration arrangement with the former owner of INTEX. The contingent consideration is based on achievement of a minimum gross profit amount for calendar year 2022. Based on the formula, the potential contingent consideration can range from zero to $6.2 million. At the date of the acquisition, the fair value was estimated to be $5.8 million. As of December 31, 2022, the fair value was increased to $6.2 million. Contingent payment of $5.8 million was included in the acquisition purchase price at the date of acquisition and the change in fair value of $0.4 million was recognized in selling, general and administrative expense for the three months ended December 31, 2022

Segments

Segments	3 Months Ended
	Dec. 31, 2022
Segment Reporting [Abstract]
Segments	12. SEGMENTS Operating segments for the Company are determined based on information used by the chief operating decision maker (“CODM”) in deciding how to evaluate performance and allocate resources to each of the segments. The CODM reviews Adjusted EBITDA and Adjusted EBITDA Margin as the key segment measures of performance. Adjusted EBITDA is defined as segment operating income (loss) plus depreciation and amortization, adjusted by adding thereto or subtracting therefrom stock-based compensation costs, business transformation costs, acquisition costs, capital structure transaction costs, and certain other costs. Adjusted EBITDA Margin is defined as Adjusted EBITDA divided by net sales. The Company has two reportable segments, Residential and Commercial. The reportable segments were determined primarily based on products and end markets as follows: • Residential—The Residential segment manufactures and distributes decking, rail, trim and accessories through a national network of dealers and distributors and multiple home improvement retailers providing extensive geographic coverage and enabling the Company to effectively serve contractors. The addition of StruXure expands our product offerings in the Residential segment. The addition of regional recyclers provides full-service recycled PVC material processing, sourcing, logistical support, and scrap management programs. This segment is impacted by trends in and the strength of home repair and remodel activity. • Commercial—The Commercial segment manufactures, fabricates and distributes resin based extruded sheeting products for a variety of commercial and industrial applications through a widespread distribution network as well as directly to original equipment manufacturers. This segment includes Scranton Products which manufactures lockers and partitions and Vycom which manufactures resin based sheeting products. This segment is impacted by trends in and the strength of the repair and remodel sector. The segment data below includes data for Residential and Commercial for the three months ended December 31, 2022 and 2021 (in thousands). Three Months Ended December 31, 2022 2021 Net sales to customers Residential $ 179,484 $ 221,133 Commercial 36,775 38,575 Total $ 216,259 $ 259,708 Adjusted EBITDA Residential $ 26,007 $ 69,431 Commercial 5,154 4,748 Total Adjusted EBITDA for reporting segments $ 31,161 $ 74,179 Unallocated net expenses (16,061 ) (15,659 ) Adjustments to Income before income tax provision Depreciation and amortization (33,840 ) (28,082 ) Stock-based compensation costs (3,957 ) (4,016 ) Acquisition costs (1) (2,435 ) (497 ) Other costs (2) (733 ) (485 ) Interest expense, net (9,299 ) (4,148 ) Income (loss) before income tax provision $ (35,164 ) $ 21,292 (1) Acquisition costs reflect costs directly related to completed acquisitions of $2.4 million and $0.5 million in the three months ended December 31, 2022 and 2021, respectively. ( 2 ) Other costs include costs for legal expense of $0.2 million and $0.3 million in the three months ended December 31, 2022 and 2021, respectively, costs related to an incentive plan and other ancillary expenses associated with the initial public offering of $0.1 million for the three months ended December 31, 2021, and other costs of $0.5 million and $0.1 million for the three months ended December 31, 2022 and 2021, respectively.

Capital Stock

Capital Stock	3 Months Ended
	Dec. 31, 2022
Stockholders Equity Note [Abstract]
Capital Stock	13. CAPITAL STOCK Share Repurchase Program On May 5, 2022, the Board of Directors authorized the Company to repurchase up to $400 million of the Company’s Class A common stock (the “Share Repurchase Program”). The Share Repurchase Program allows the Company to repurchase its shares opportunistically from time to time. Purchases may be effected through one or more open market transactions, privately negotiated transactions, transactions structured through investment banking institutions, accelerated share repurchases or tender offers, some of which may be effected through Rule 10b5-1 plans, or a combination of the foregoing. The timing of repurchases will depend upon several factors, including market and business conditions, and repurchases may be discontinued at any time. In the fiscal year ended September 30, 2022, the Company repurchased 2,508,906 shares of its Class A common stock under a $50 million accelerated share repurchase agreement at an average price of $19.93 per share. During the same period, the Company also repurchased 1,607,664 shares of its Class A common stock on the open market at an average price of $19.58 per share, totaling an approximately $31.5 million reacquisition cost. During the three months ended December 31, 2022, the Company repurchased an additional 352,760 shares of its Class A common stock on the open market at an average price of $21.23 per share, totaling an approximately $7.5 million reacquisition cost. As of December 31, 2022, the Company had approximately $311.0 million available for repurchases under the Share Repurchase Program. On August 16, 2022, the U.S. government enacted the Inflation Reduction Act of 2022 (the “Inflation Reduction Act”), The Company expects the excise tax to apply to its Share Repurchase Program, but does not expect the excise tax to have a material effect on its business.

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Dec. 31, 2022
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	14. STOCK-BASED COMPENSATION The Company grants stock-based awards to attract, retain and motivate key employees and directors. The 2020 Omnibus Incentive Compensation Plan (“2020 Plan”), provides for the grant of stock options, stock appreciation rights, restricted stock, restricted stock units, dividend equivalent rights, and performance-based or other equity-related awards to the Company’s employees and directors. The maximum aggregate number of shares that may be issued under the 2020 Plan is 15,852,319 shares with 2,688,067 shares remaining in the reserve. The total aggregate number of shares may be adjusted as determined by the Board of Directors. Stock-based compensation expense for the three months ended December 31, 2022 and 2021 was $4.0 million and $4.0 million, respectively, recognized in “Selling, general and administrative expenses” in the Condensed Consolidated Statements of Comprehensive Income. Total income tax benefit for the three months ended December 31, 2022 and 2021 was $0.8 million and $0.8 million, respectively. As of December 31, 2022, the Company had not yet recognized compensation cost on unvested stock-based awards of $39.4 million, with a weighted average remaining recognition period of 2.2 years. The Company uses the Black Scholes pricing model to estimate the fair value of its service-based awards as of the grant date. Under the terms of the 2020 Plan, all stock options will expire if not exercised within ten years of the grant date. The following table sets forth the significant assumptions used for the calculation of stock-based compensation expense for the three months ended December 31, 2022 and 2021: December 12, 2022 Grant Date November 19, 2021 Grant Date Risk-free interest rate 3.77 % 1.34 % Expected volatility 40.00 % 40.00 % Expected term (in years) 6.00 6.00 Expected dividend yield 0.00 % 0.00 % Stock Options The following table summarizes the performance-based stock option activity for the three months ended December 31, 2022: Number of Shares Weighted Average Exercise Price Per Share Weighted Average Remaining Contract Term Aggregate Intrinsic Value (in years) (in thousands) Outstanding at October 1, 2022 1,410,653 $ 23.00 Granted — — Exercised — — Cancelled/Forfeited (2,174 ) 23.00 Outstanding at December 31, 2022 1,408,479 23.00 7.1 — Vested and exercisable at December 31, 2022 1,408,479 $ 23.00 7.1 — The following table summarizes the service-based stock option activity for the three months ended December 31, 2022: Number of Shares Weighted Average Exercise Price Per Share Weighted Average Remaining Contract Term Aggregate Intrinsic Value (in years) (in thousands) Outstanding at October 1, 2022 3,557,194 $ 25.57 Granted 250,477 20.18 Exercised — — Cancelled/Forfeited (31,281 ) 23.00 Outstanding at December 31, 2022 3,776,390 25.23 7.7 42 Vested and exercisable at December 31, 2022 2,179,215 $ 23.88 7.3 — Restricted Stock Awards A summary of the service-based restricted stock awards activity during the three months ended December 31, 2022 was as follows: Number of Shares Weighted Average Grant Date Fair Value Outstanding and unvested at October 1, 2022 275,628 $ 23.00 Granted — — Vested (20,483 ) 23.00 Forfeited (14,663 ) 23.00 Outstanding and unvested at December 31, 2022 240,482 $ 23.00 Performance Restricted Stock Units Performance restricted stock units were granted to officers and certain employees of the Company and represent the right to earn shares of Company common stock based on the achievement of company-wide non-GAAP performance conditions, including cumulative net sales, average return on net tangible assets and cumulative EBITDA during the three-year performance period. Compensation cost is amortized into expense over the performance period, which is generally three years, and is based on the probability of meeting performance targets. The fair value of each performance share award is based on the closing stock price on the date of grant. A summary of the performance-based restricted stock unit awards activity for the three months ended December 31, 2022 presented at target was as follows: Number of Shares Weighted Average Grant Date Fair Value Outstanding and unvested at October 1, 2022 221,469 $ 37.51 Granted 317,033 20.18 Vested — — Forfeited (4,470 ) 38.04 Outstanding and unvested at December 31, 2022 534,032 $ 27.22 Restricted Stock Units A summary of the service-based restricted stock unit awards activity for the three months ended December 31, 2022 was as follows: Number of Shares Weighted Average Grant Date Fair Value Outstanding and unvested at October 1, 2022 574,499 $ 31.14 Granted 384,712 20.17 Vested (78,358 ) 38.18 Forfeited (9,601 ) 34.09 Outstanding and unvested at December 31, 2022 871,252 $ 25.63

Earnings Per Share

Earnings Per Share	3 Months Ended
	Dec. 31, 2022
Earnings Per Share [Abstract]
Earnings Per Share	15. EARNINGS PER SHARE The Company computes earnings per common share (“EPS”) under the two-class method which requires the allocation of all distributed and undistributed earnings attributable to the Company to common stock and other participating securities based on their respective rights to receive distributions of earnings or losses. The Company’s Class A common stock and Class B common stock equally share in distributed and undistributed earnings, therefore, no allocation to participating securities or dilutive securities is performed. Basic EPS attributable to common stockholders is calculated by dividing net income (loss) attributable to common stockholders by the weighted-average number of shares of common stock outstanding. Diluted EPS is calculated by adjusting weighted average shares outstanding for the dilutive effect of potential common shares, determined using the treasury-stock method. For purposes of the diluted EPS calculation, restricted stock awards, restricted stock units and options to purchase shares of common stock are considered to be potential common shares. The following table sets forth the computation of the Company’s basic and diluted EPS attributable to common stockholders (in thousands, except share and per share amounts): Three Months Ended December 31, 2022 2021 Numerator: Net income (loss) $ (25,836 ) $ 16,707 Net income (loss) attributable to common stockholders - basic and diluted $ (25,836 ) $ 16,707 Denominator: Weighted-average shares of common stock Basic 150,877,635 154,407,244 Diluted 150,877,635 156,854,925 Net income (loss) per share attributable to common stockholders: Net income (loss) per common share - basic $ (0.17 ) $ 0.11 Net income (loss) per common share - diluted $ (0.17 ) $ 0.11 The following table includes the number of shares that may be dilutive common shares in the future, and were not included in the computation of diluted net income per share because the effect was anti-dilutive: Three Months Ended December 31, 2022 2021 Stock Options 5,010,161 254,208 Restricted Stock Units 531,462 117,835

Income Taxes

Income Taxes	3 Months Ended
	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	16. INCOME TAXES The Company calculates the interim tax provision in accordance with the provisions of ASC 740-270, Income Taxes; Interim Reporting

Commitments And Contingencies

Commitments And Contingencies	3 Months Ended
	Dec. 31, 2022
Commitments And Contingencies Disclosure [Abstract]
Commitments And Contingencies	17. COMMITMENTS AND CONTINGENCIES Legal Proceedings During the year ended September 30, 2019, the Company was made aware of a worker’s compensation case that became reasonably possible to give rise to a liability. The case is in discovery and the nature and extent of the Company’s exposure is currently being determined. The Company expects a range of loss of $0.4 million to $0.5 million. In the normal course of the Company’s business, it is at times subject to various other legal actions, in some cases for which the relief or damages sought may be substantial. Although the Company is not able to predict the outcome of such actions, after reviewing all pending and threatened actions with counsel and based on information currently available, management believes that the outcome of such actions, individually or in the aggregate, will not have a material adverse effect on the Company’s results of operations or financial position. However, it is possible that the ultimate resolution of such matters, if unfavorable, may be material to the Company’s results of operations in a particular future period as the time and amount of any resolution of such actions and its relationship to the future results of operations are not currently known. The Company accrues for losses when they are probable of occurrence and such losses are reasonably estimable. Legal costs expected to be incurred are accounted for as they are incurred.

Condensed Financial Information

Condensed Financial Information of Registrant (Parent Company Only)	3 Months Ended
	Dec. 31, 2022
Condensed Financial Information Of Parent Company Only Disclosure [Abstract]
Condensed Financial Information of Registrant (Parent Company Only)	18. CONDENSED FINANCIAL INFORMATION OF REGISTRANT (PARENT COMPANY ONLY) The AZEK Company Inc. (parent company only) Balance Sheets (In thousands of U.S. dollars, except for share and per share amounts) December 31, 2022 September 30, 2022 ASSETS: Non-current assets: Investments in subsidiaries $ 1,412,772 $ 1,444,443 Total non-current assets 1,412,772 1,444,443 Total assets $ 1,412,772 $ 1,444,443 LIABILITIES AND STOCKHOLDERS’ EQUITY: Total liabilities $ — $ — Stockholders’ equity: Preferred stock, $0.001 par value; 1,000,000 shares authorized and no shares issued or outstanding at December 31, 2022 and September 30, 2022, respectively — — Class A common stock, $0.001 par value; 1,100,000,000 shares authorized, 155,196,865 shares issued at December 31, 2022 and 155,157,220 shares issued at September 30, 2022 155 155 Class B common stock, $0.001 par value; 100,000,000 shares authorized, 100 shares issued and outstanding at December 31, 2022 and at September 30, 2022, respectively — — Additional paid‑in capital 1,633,827 1,630,378 Accumulated deficit (138,838 ) (113,002 ) Accumulated other comprehensive income (loss) (1,796 ) — Treasury stock, at cost, 4,469,330 and 4,116,570 shares at December 31, 2022 and September 30, 2022, respectively (80,576 ) (73,088 ) Total stockholders’ equity 1,412,772 1,444,443 Total liabilities and stockholders’ equity $ 1,412,772 $ 1,444,443 Three Months Ended December 31, 2022 2021 Net income (loss) of subsidiaries $ (25,836 ) $ 16,707 Net income (loss) of subsidiaries $ (25,836 ) $ 16,707 Comprehensive income (loss) $ (27,632 ) $ 16,707 The AZEK Company Inc. did not have any cash as of December 31, 2022 or September 30, 2022, accordingly a Condensed Statement of Cash Flows has not been presented. Basis of Presentation The parent company financial statements should be read in conjunction with the Company’s Consolidated Financial Statements and the accompanying notes thereto. For purposes of this condensed financial information, the Company’s wholly owned and majority owned subsidiaries are recorded based upon its proportionate share of the subsidiaries’ net assets (similar to presenting them on the equity method). Since the restricted net assets of The AZEK Company Inc. and its subsidiaries exceed 25% of the consolidated net assets of the Company and its subsidiaries, the accompanying condensed parent company financial statements have been prepared in accordance with Rule 12-04, Schedule 1 of Regulation S-X. This information should be read in conjunction with the accompanying Condensed Consolidated Financial Statements. Dividends from Subsidiaries There were $7.5 million and $0.0 million cash dividends paid to The AZEK Company Inc. from the Company’s consolidated subsidiaries during the three months ended December 31, 2022 and 2021. The $7.5 million cash dividends were used to fund share repurchases on the open market. Restricted Payments CPG International LLC is party to the Revolving Credit Facility and the 2022 Term Loan Agreement. The obligations under the Revolving Credit Facility and 2022 Term Loan Agreement are secured by substantially all of the present and future assets of the borrowers and guarantors, including equity interests of their domestic subsidiaries, subject to certain exceptions. The obligations under the Revolving Credit Facility and 2022 Term Loan Agreement are guaranteed by the Company and its wholly owned domestic subsidiaries other than certain immaterial subsidiaries and other excluded subsidiaries. CPG International LLC is not permitted to make certain payments unless those payments are consistent with exceptions outlined in the agreements. These payments include repurchase of equity interests, fees associated with a public offering, income taxes due in other applicable payments. Further, the payments are only permitted if certain conditions are met related to availability and fixed charge coverage as defined in the Revolving Credit Facility and described in Note 8 “Debt” to these Condensed Consolidated Financial Statements.

Organization and Summary of S_2

Organization and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Dec. 31, 2022
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The Company operates on a fiscal year ending September 30. The accompanying unaudited Condensed Consolidated Financial Statements and notes have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information, and in management’s opinion, includes all adjustments, consisting of only normal recurring adjustments, necessary for the fair statement of the Company’s financial position, its results of operations and cash flows for the interim periods presented. The results of operations for the three months ended December 31, 2022 and the cash flows for the three months ended December 31, 2022 are not necessarily indicative of the results to be expected for the full fiscal year or any other period. The Company’s financial condition and results of operations are being, and are expected to continue to be affected by the current COVID-19 public health pandemic. The economic effects of the COVID-19 pandemic will likely continue to affect demand for the Company’s products in the foreseeable future. Although management has implemented measures to mitigate any impact of the COVID-19 pandemic on the Company’s business, financial condition and results of operations, these measures may not fully mitigate the impact of the COVID-19 pandemic on the Company’s business, financial condition and results of operations. Management cannot predict the degree to, or the period over, which the Company will be affected by the COVID-19 pandemic and resulting governmental and other measures. The accompanying unaudited Condensed Consolidated Financial Statements should be read in conjunction with the Consolidated Financial Statements and notes thereto included in the Company’s 2022 Form 10-K. The Condensed Consolidated Balance Sheet as of September 30, 2022 was derived from the audited financial statements at that date. There have been no material changes in the Company’s significant accounting policies from those that were disclosed in the 2022 Form 10-K, except as noted below.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Significant estimates include revenue recognition, reserves for excess inventory, inventory obsolescence, inventory valuation, product warranties, customer rebates, stock-based compensation, litigation, income taxes, contingent consideration, goodwill and intangible asset valuation and accounting for long-lived assets. Management’s estimates and assumptions are evaluated on an ongoing basis and are based on historical experience, current conditions and available information. Actual results may differ from estimated amounts. Estimates are revised as additional information becomes available.
Accounting Policies	Accounting Policies Refer to the Company’s 2022 Form 10-K for a discussion of the Company’s accounting policies, as updated below and for recently adopted accounting standards. Derivatives The Company uses interest rate swap agreements to hedge its exposure to interest rate risk on its Senior Secured Credit Facilities. The Company designates derivatives that meet specific accounting criteria as qualifying hedges at inception. These criteria require the Company to have the expectation that the derivative will be highly effective at offsetting changes in the fair value or expected cash flows of the hedged exposure, both at inception of the hedging relationship and on an ongoing basis. The Company recognizes all derivative instruments at fair value and classifies them on the balance sheet as either Other current assets, Other assets, Accrued expenses and other liabilities or Other non-current liabilities. The interest rate swap agreements are designated as cash flow hedges. For cash flow hedges, the Company records the effective portion of the change in fair value of the derivative as part of Accumulated other comprehensive income and recognizes those changes in earnings in the period the hedged transaction affects earnings. The Company recognizes any ineffective portion of the change in the fair value of the derivative immediately in earnings. Refer to Note 11 in the Notes to Condensed Consolidated Financial Statements
Derivatives	Derivatives The Company uses interest rate swap agreements to hedge its exposure to interest rate risk on its Senior Secured Credit Facilities. The Company designates derivatives that meet specific accounting criteria as qualifying hedges at inception. These criteria require the Company to have the expectation that the derivative will be highly effective at offsetting changes in the fair value or expected cash flows of the hedged exposure, both at inception of the hedging relationship and on an ongoing basis. The Company recognizes all derivative instruments at fair value and classifies them on the balance sheet as either Other current assets, Other assets, Accrued expenses and other liabilities or Other non-current liabilities. The interest rate swap agreements are designated as cash flow hedges. For cash flow hedges, the Company records the effective portion of the change in fair value of the derivative as part of Accumulated other comprehensive income and recognizes those changes in earnings in the period the hedged transaction affects earnings. The Company recognizes any ineffective portion of the change in the fair value of the derivative immediately in earnings. Refer to Note 11 in the Notes to Condensed Consolidated Financial Statements
Research and Development Costs	Research and Development Costs Research and development costs primarily relate to new product development, product claims support and manufacturing process improvements. Such costs are expensed as incurred and are included in “Selling, general and administrative expenses” within the Condensed Consolidated Statements of Comprehensive Income. Total research and development expenses were $2.1 million and $2.0 million, respectively, for the three months ended December 31, 2022 and 2021.
Recently Issued Accounting Pronouncements	Recently Adopted Accounting Pronouncements On October 1, 2021, the Company adopted ASU No. 2019-12, Income Taxes (Topic 740)—Simplifying the Accounting for Income Taxes

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Dec. 31, 2022
Revenue From Contract With Customer [Abstract]
Summary of Rebate Activity	The rebate activity was as follows (in thousands): Three Months Ended December 31, 2022 2021 Beginning balance $ 56,542 $ 47,648 Rebate expense 15,716 16,150 Rebate payments (11,192 ) (9,957 ) Ending balance $ 61,066 $ 53,841

Business Combinations (Tables)

Business Combinations (Tables)	3 Months Ended
	Dec. 31, 2022
Business Combinations [Abstract]
Summary of Preliminary Allocation of Assets Acquired and Liabilities Assumed	The following table represents the preliminary allocation of assets acquired and liabilities assumed on the acquisition date as of December 31, 2022 (in thousands): (US dollars in thousands) Total Cash and cash equivalents $ 4,279 Trade receivables 790 Inventories 1,902 Other current assets 52 Property and equipment 3,612 Intangible assets 9,300 ROU assets 580 Accounts payable (250 ) Accrued expenses (510 ) Current lease liabilities (114 ) Noncurrent lease liabilities (466 ) Total identifiable assets 19,175 Goodwill 6,557 Net assets acquired/total consideration 25,732 Less: cash acquired (4,279 ) Total consideration net of cash acquired $ 21,453

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Dec. 31, 2022
Inventory Disclosure [Abstract]
Schedule of Inventories	Inventories consisted of the following (in thousands): in thousands December 31, 2022 September 30, 2022 Raw materials $ 66,026 $ 72,464 Work in process 42,190 39,829 Finished goods 212,667 187,612 Total inventories $ 320,883 $ 299,905

Property, Plant and Equipment_2

Property, Plant and Equipment - Net (Tables)	3 Months Ended
	Dec. 31, 2022
Property Plant And Equipment [Abstract]
Summary of Property, Plant and Equipment - Net	Property, plant and equipment – net consisted of the following (in thousands): December 31, 2022 September 30, 2022 Land and improvements $ 4,829 $ 3,350 Buildings and improvements 115,451 110,300 Manufacturing equipment 565,320 540,536 Computer equipment 28,882 28,198 Furniture and fixtures 7,167 6,867 Vehicles 929 941 Total property and equipment 722,578 690,192 Construction in progress 124,282 140,566 846,860 830,758 Accumulated depreciation (333,730 ) (312,845 ) Total property and equipment – net $ 513,130 $ 517,913

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Net (Tables)	3 Months Ended
	Dec. 31, 2022
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Changes in Carrying Amount of Goodwill	Goodwill consisted of the following (in thousands): Residential Commercial Total Goodwill as of September 30, 2022 $ 953,606 $ 40,389 $ 993,995 Acquisitions — — — Goodwill as of December 31, 2022 $ 953,606 $ 40,389 $ 993,995 Accumulated impairment losses as of September 30, 2022 — 32,200 32,200 Accumulated impairment losses as of December 31, 2022 $ — $ 32,200 $ 32,200
Summary of Finite-lived Intangible Assets	Finite-lived intangible assets consisted of the following (in thousands): December 31, 2022 Lives in Years Gross Carrying Value Accumulated Amortization Net Carrying Value Proprietary knowledge 10 — 15 $ 300,400 $ (240,484 ) $ 59,916 Trademarks 5 — 20 230,240 (154,692 ) 75,548 Customer relationships 12 — 19 176,852 (81,672 ) 95,180 Patents 9 — 10 8,500 (5,216 ) 3,284 Other intangibles 3 — 15 4,076 (4,006 ) 70 Total intangible assets $ 720,068 $ (486,070 ) $ 233,998 September 30, 2022 Lives in Years Gross Carrying Value Accumulated Amortization Net Carrying Value Propriety knowledge 10 — 15 $ 300,400 $ (236,024 ) $ 64,376 Trademarks 5 — 20 230,240 (151,259 ) 78,981 Customer relationships 12 — 19 176,852 (78,015 ) 98,837 Patents 9 — 10 8,500 (4,950 ) 3,550 Other intangible assets 3 — 15 4,076 (3,985 ) 91 Total intangible assets $ 720,068 $ (474,233 ) $ 245,835

Composition of Certain Balanc_2

Composition of Certain Balance Sheet Accounts (Tables)	3 Months Ended
	Dec. 31, 2022
Composition Of Certain Balance Sheet Accounts Disclosure [Abstract]
Summary of Allowance for Doubtful Accounts	Allowance for doubtful accounts consisted of the following (in thousands): Three Months Ended December 31, 2022 2021 Beginning balance $ 1,397 $ 1,109 Provision 277 (45 ) Bad debt write-offs — 10 Ending balance $ 1,674 $ 1,074
Schedule of Accrued Expenses and Other Liabilities	Accrued expenses consisted of the following (in thousands): December 31, 2022 September 30, 2022 Employee related liabilities $ 31,627 $ 36,866 Construction in progress 9,236 9,032 Marketing 5,379 4,272 Lease liability - operating 5,119 5,223 Lease liability - finance 2,524 2,366 Warranty 2,492 2,900 Freight 2,384 1,821 Customer deposits 1,787 2,494 Professional fees 1,466 2,089 Other 5,474 5,526 Total accrued expenses and other current liabilities $ 67,488 $ 72,589

Debt (Tables)

Debt (Tables)	3 Months Ended
	Dec. 31, 2022
Debt Disclosure [Abstract]
Summary of Long-term Debt	Debt consisted of the following (in thousands): December 31, 2022 September 30, 2022 2022 Term Loan due April 28, 2029 — SOFR + 2.50% $ 598,500 $ 600,000 Revolving Credit Facility through March 31, 2026 - LIBOR + 1.25% — — Total 598,500 600,000 Less unamortized deferred financing costs (4,533 ) (4,712 ) Less unamortized original issue discount (4,241 ) (4,409 ) Less current portion (6,000 ) (6,000 ) Long-term debt—less current portion and unamortized deferred financing costs $ 583,726 $ 584,879
Summary of Interest Expense	Interest expense consisted of the following (in thousands): Three Months Ended December 31, 2022 2021 Interest expense 2022 Term Loan Agreement $ 8,916 $ — Term Loan Agreement — 3,884 Revolving Credit Facility 151 163 Other 1,109 866 Amortization - Debt issue costs 2022 Term Loan Agreement 179 — Term Loan Agreement — 254 Revolving Credit Facility 66 66 2022 Term Loan OID 167 — Term Loan OID — 30 Capitalized interest (1,289 ) (1,115 ) Interest expense $ 9,299 $ 4,148

Product Warranties (Tables)

Product Warranties (Tables)	3 Months Ended
	Dec. 31, 2022
Product Warranties Disclosures [Abstract]
Summary of Warranty Reserve Activity	Warranty coverage depends on the product involved. The warranty reserve activity consisted of the following (in thousands): Three Months Ended December 31, 2022 2021 Beginning balance $ 15,023 $ 12,699 Adjustments to reserve (172 ) 467 Warranty claims payment (313 ) (485 ) Accretion - purchase accounting valuation — — Ending balance 14,538 12,681 Current portion of accrued warranty (2,492 ) (2,885 ) Accrued warranty – less current portion $ 12,046 $ 9,796

Leases (Tables)

Leases (Tables)	3 Months Ended
	Dec. 31, 2022
Leases [Abstract]
Summary of Lease Assets and Lease Liabilities	Lease assets and lease liabilities as of December 31, 2022 and September 30, 2022 were as follows (in thousands): Leases Classification on Balance Sheet December 31, 2022 September 30, 2022 Assets ROU operating lease assets Other assets $ 18,670 $ 19,724 Finance lease assets Other assets 74,035 73,541 Total lease assets $ 92,705 $ 93,265 Liabilities Current Operating Accrued expenses and other liabilities $ 5,119 $ 5,223 Finance Accrued expenses and other liabilities 2,524 2,366 Non-Current Operating Other non-current liabilities 16,255 17,261 Finance Other non-current liabilities 76,639 75,706 Total lease liabilities $ 100,537 $ 100,556
Components of Lease Expense	The components of lease expense for the three months ended December 31, 2022 and 2021 were as follows: Three Months Ended December 31, (in thousands) 2022 2021 Operating lease expense $ 1,501 $ 1,170 Finance lease amortization of assets 1,248 717 Finance lease interest on lease liabilities 1,092 804 Short term 103 42 Sublease income (71 ) (119 ) Total lease expense $ 3,873 $ 2,614
Supplemental Information Related to Leases	The tables below present supplemental information related to leases as of December 31, 2022 and Weighted-average remaining lease term (years) December 31, 2022 September 30, 2022 Operating leases 6.8 6.9 Finance leases 26.0 26.5 Weighted-average discount rate Operating leases 4.2 % 4.1 % Finance leases 5.9 % 5.9 %
Summary of Maturities of Lease Liabilities	The following table summarizes the maturities of lease liabilities at December 31, 2022: (in thousands) Operating Leases Finance Leases Total 2023 $ 4,555 $ 5,153 $ 9,708 2024 4,636 6,741 11,377 2025 3,780 6,629 10,409 2026 2,497 6,476 8,973 2027 1,877 6,070 7,947 Thereafter 7,695 122,216 129,911 Total lease payments 25,040 153,285 178,325 Less: interest (3,666 ) (74,122 ) (77,788 ) Present value of lease liability $ 21,374 $ 79,163 $ 100,537

Fair Value Of Financial Instr_2

Fair Value Of Financial Instruments (Tables)	3 Months Ended
	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Summary of Carrying Values and the Estimated Fair Values of the Debt Financial Instruments	Derivative Instruments The Company’s objective in using interest rate derivative instruments is to hedge against interest rate volatility associated with its Senior Secured Credit Facilities by converting a portion of its floating rate debt to fixed rate debt. In November 2022, the Company entered into two interest rate swap agreements with Barclays Bank PLC (“Barclays”) to manage interest rate risk related to 2022 Term Loan. Each agreement has a notional amount of $150 million and will expire on October 31, 2025. One agreement swaps variable interest at a rate based on SOFR with a fixed rate of 4.39% and the second with a fixed rate of 4.48%. At the inceptions of the swap agreements and as of December 31, 2022, both swaps were designated and qualified as cash flow hedges in accordance with ASC 815. Their gain (loss) is recorded in Accumulated other comprehensive income (loss) and then reclassified into Interest expense in the same period in which the hedged transaction affects earnings. As of December 31, 2022, the Company expects to reclass approximately $1.0 million ($0.7 million after-tax) as a reduction to interest expense in the next 12 months. The following table provides the fair values of the interest rate derivative instruments as well as their classification on the Balance Sheet as of December 31, 2022 and September 30, 2022 (in thousands): Fair Value as of Fair Value Hierarchy Balance Sheet Location December 31, 2022 September 30, 2022 Assets Interest rate swaps Level 2 Other current assets $ 1,048 $ — Liabilities Interest rate swaps Level 2 Other non-current liabilities $ 3,491 $ — The Company estimates the fair value of interest rate swaps using a valuation model based on observable market data, such as yield curves. Both swaps are classified as Level 2 measurement in the fair value hierarchy. The following table provides the effects of the interest rate derivative instruments in Statements of Income and on Accumulated other comprehensive income (loss) as of December 31, 2022 and 2021 (in thousands): Cash Flow Hedge - Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss) Location of Gain (Loss) Reclassified from Accumulated Other Cash Flow Hedge - Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) Three Months Ended December 31, Comprehensive Income (Loss) Three Months Ended December 31, 2022 2021 into Income 2022 2021 Interest rate swaps $ (1,796 ) $ — Interest expense $ (74 ) $ — Other Financial Instruments The carrying values and the estimated fair values of the debt financial instruments (Level 2 measurements) consisted of the following (in thousands): December 31, 2022 September 30, 2022 Carrying Value Estimated Fair Value Carrying Value Estimated Fair Value 2022 Term Loan due April 28, 2029 $ 598,500 $ 586,530 $ 600,000 $ 586,500
Summary of Fair Values of Interest Rate Derivative Instruments as well as Classification on Balance Sheet	The following table provides the fair values of the interest rate derivative instruments as well as their classification on the Balance Sheet as of December 31, 2022 and September 30, 2022 (in thousands): Fair Value as of Fair Value Hierarchy Balance Sheet Location December 31, 2022 September 30, 2022 Assets Interest rate swaps Level 2 Other current assets $ 1,048 $ — Liabilities Interest rate swaps Level 2 Other non-current liabilities $ 3,491 $ —
Summary of Effects of Interest Rate Derivative Instruments	The following table provides the effects of the interest rate derivative instruments in Statements of Income and on Accumulated other comprehensive income (loss) as of December 31, 2022 and 2021 (in thousands): Cash Flow Hedge - Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss) Location of Gain (Loss) Reclassified from Accumulated Other Cash Flow Hedge - Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) Three Months Ended December 31, Comprehensive Income (Loss) Three Months Ended December 31, 2022 2021 into Income 2022 2021 Interest rate swaps $ (1,796 ) $ — Interest expense $ (74 ) $ —

Segments (Tables)

Segments (Tables)	9 Months Ended
	Jun. 30, 2022
Segment Reporting [Abstract]
Summary of Residential and Commercial Segment Reporting Information	The segment data below includes data for Residential and Commercial for the three months ended December 31, 2022 and 2021 (in thousands). Three Months Ended December 31, 2022 2021 Net sales to customers Residential $ 179,484 $ 221,133 Commercial 36,775 38,575 Total $ 216,259 $ 259,708 Adjusted EBITDA Residential $ 26,007 $ 69,431 Commercial 5,154 4,748 Total Adjusted EBITDA for reporting segments $ 31,161 $ 74,179 Unallocated net expenses (16,061 ) (15,659 ) Adjustments to Income before income tax provision Depreciation and amortization (33,840 ) (28,082 ) Stock-based compensation costs (3,957 ) (4,016 ) Acquisition costs (1) (2,435 ) (497 ) Other costs (2) (733 ) (485 ) Interest expense, net (9,299 ) (4,148 ) Income (loss) before income tax provision $ (35,164 ) $ 21,292 (1) Acquisition costs reflect costs directly related to completed acquisitions of $2.4 million and $0.5 million in the three months ended December 31, 2022 and 2021, respectively. ( 2 ) Other costs include costs for legal expense of $0.2 million and $0.3 million in the three months ended December 31, 2022 and 2021, respectively, costs related to an incentive plan and other ancillary expenses associated with the initial public offering of $0.1 million for the three months ended December 31, 2021, and other costs of $0.5 million and $0.1 million for the three months ended December 31, 2022 and 2021, respectively.

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Dec. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Share-Based Payment Award Valuation Assumptions	The following table sets forth the significant assumptions used for the calculation of stock-based compensation expense for the three months ended December 31, 2022 and 2021: December 12, 2022 Grant Date November 19, 2021 Grant Date Risk-free interest rate 3.77 % 1.34 % Expected volatility 40.00 % 40.00 % Expected term (in years) 6.00 6.00 Expected dividend yield 0.00 % 0.00 %
Performance Shares [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Share-Based Compensation Stock Options Activity	The following table summarizes the performance-based stock option activity for the three months ended December 31, 2022: Number of Shares Weighted Average Exercise Price Per Share Weighted Average Remaining Contract Term Aggregate Intrinsic Value (in years) (in thousands) Outstanding at October 1, 2022 1,410,653 $ 23.00 Granted — — Exercised — — Cancelled/Forfeited (2,174 ) 23.00 Outstanding at December 31, 2022 1,408,479 23.00 7.1 — Vested and exercisable at December 31, 2022 1,408,479 $ 23.00 7.1 —
Service Based Stock Option Activity [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Share-Based Compensation Stock Options Activity	The following table summarizes the service-based stock option activity for the three months ended December 31, 2022: Number of Shares Weighted Average Exercise Price Per Share Weighted Average Remaining Contract Term Aggregate Intrinsic Value (in years) (in thousands) Outstanding at October 1, 2022 3,557,194 $ 25.57 Granted 250,477 20.18 Exercised — — Cancelled/Forfeited (31,281 ) 23.00 Outstanding at December 31, 2022 3,776,390 25.23 7.7 42 Vested and exercisable at December 31, 2022 2,179,215 $ 23.88 7.3 —
Service Based Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Non-Vested Restricted Stock Activity	A summary of the service-based restricted stock awards activity during the three months ended December 31, 2022 was as follows: Number of Shares Weighted Average Grant Date Fair Value Outstanding and unvested at October 1, 2022 275,628 $ 23.00 Granted — — Vested (20,483 ) 23.00 Forfeited (14,663 ) 23.00 Outstanding and unvested at December 31, 2022 240,482 $ 23.00
Schedule of Unvested Restricted Stock Units	A summary of the service-based restricted stock unit awards activity for the three months ended December 31, 2022 was as follows: Number of Shares Weighted Average Grant Date Fair Value Outstanding and unvested at October 1, 2022 574,499 $ 31.14 Granted 384,712 20.17 Vested (78,358 ) 38.18 Forfeited (9,601 ) 34.09 Outstanding and unvested at December 31, 2022 871,252 $ 25.63
Performance Based Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Non-Vested Restricted Stock Activity	A summary of the performance-based restricted stock unit awards activity for the three months ended December 31, 2022 presented at target was as follows: Number of Shares Weighted Average Grant Date Fair Value Outstanding and unvested at October 1, 2022 221,469 $ 37.51 Granted 317,033 20.18 Vested — — Forfeited (4,470 ) 38.04 Outstanding and unvested at December 31, 2022 534,032 $ 27.22

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Dec. 31, 2022
Earnings Per Share [Abstract]
Summary of Computation of Basic And Diluted Earnings Per Share	The following table sets forth the computation of the Company’s basic and diluted EPS attributable to common stockholders (in thousands, except share and per share amounts): Three Months Ended December 31, 2022 2021 Numerator: Net income (loss) $ (25,836 ) $ 16,707 Net income (loss) attributable to common stockholders - basic and diluted $ (25,836 ) $ 16,707 Denominator: Weighted-average shares of common stock Basic 150,877,635 154,407,244 Diluted 150,877,635 156,854,925 Net income (loss) per share attributable to common stockholders: Net income (loss) per common share - basic $ (0.17 ) $ 0.11 Net income (loss) per common share - diluted $ (0.17 ) $ 0.11
Summary of Antidilutive Securities Excluded From Computation of Earnings Per Share	The following table includes the number of shares that may be dilutive common shares in the future, and were not included in the computation of diluted net income per share because the effect was anti-dilutive: Three Months Ended December 31, 2022 2021 Stock Options 5,010,161 254,208 Restricted Stock Units 531,462 117,835

Condensed Financial Informati_2

Condensed Financial Information of Registrant (Parent Company Only) (Tables) - Parent Company [Member]	3 Months Ended
	Dec. 31, 2022
Schedule of Balance Sheets	The AZEK Company Inc. (parent company only) Balance Sheets (In thousands of U.S. dollars, except for share and per share amounts) December 31, 2022 September 30, 2022 ASSETS: Non-current assets: Investments in subsidiaries $ 1,412,772 $ 1,444,443 Total non-current assets 1,412,772 1,444,443 Total assets $ 1,412,772 $ 1,444,443 LIABILITIES AND STOCKHOLDERS’ EQUITY: Total liabilities $ — $ — Stockholders’ equity: Preferred stock, $0.001 par value; 1,000,000 shares authorized and no shares issued or outstanding at December 31, 2022 and September 30, 2022, respectively — — Class A common stock, $0.001 par value; 1,100,000,000 shares authorized, 155,196,865 shares issued at December 31, 2022 and 155,157,220 shares issued at September 30, 2022 155 155 Class B common stock, $0.001 par value; 100,000,000 shares authorized, 100 shares issued and outstanding at December 31, 2022 and at September 30, 2022, respectively — — Additional paid‑in capital 1,633,827 1,630,378 Accumulated deficit (138,838 ) (113,002 ) Accumulated other comprehensive income (loss) (1,796 ) — Treasury stock, at cost, 4,469,330 and 4,116,570 shares at December 31, 2022 and September 30, 2022, respectively (80,576 ) (73,088 ) Total stockholders’ equity 1,412,772 1,444,443 Total liabilities and stockholders’ equity $ 1,412,772 $ 1,444,443
Schedule of Statements of Comprehensive Income (Loss)	Three Months Ended December 31, 2022 2021 Net income (loss) of subsidiaries $ (25,836 ) $ 16,707 Net income (loss) of subsidiaries $ (25,836 ) $ 16,707 Comprehensive income (loss) $ (27,632 ) $ 16,707

Organization and Summary of S_3

Organization and Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Accounting Policies [Abstract]
Research and development expenses	$ 2.1	$ 2

Revenue - Additional Informatio

Revenue - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021
Revenue From Contract With Customer [Abstract]
Accrued rebates	$ 54,556	$ 50,479	$ 49,100
Contra trade receivable	$ 6,500		$ 4,700

Revenue - Summary of Rebate Act

Revenue - Summary of Rebate Activity (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Revenue From Contract With Customer [Abstract]
Beginning balance	$ 56,542	$ 47,648
Rebate expense	15,716	16,150
Rebate payments	(11,192)	(9,957)
Ending balance	$ 61,066	$ 53,841

Business Combinations - Additio

Business Combinations - Additional Information (Detail) - USD ($) $ in Thousands		3 Months Ended
	Aug. 01, 2022	Dec. 31, 2022	Sep. 30, 2022
Business Acquisition [Line Items]
Business combination, recognized identifiable assets acquired and liabilities assumed intangible assets including goodwill		$ 15,900
Goodwill		993,995	$ 993,995
Goodwill, expected tax deductible amount		$ 6,600
Acquired finite lived intangible assets weighted average useful life		11 years 7 months 6 days
Customer Relationships [Member]
Business Acquisition [Line Items]
Business combination, recognized identifiable assets acquired and liabilities assumed intangible assets other than goodwill		$ 7,300
Acquired finite lived intangible asset useful life		12 years
Proprietary Knowledge [Member]
Business Acquisition [Line Items]
Business combination, recognized identifiable assets acquired and liabilities assumed intangible assets other than goodwill		$ 1,100
Acquired finite lived intangible asset useful life		10 years
Trademarks [Member]
Business Acquisition [Line Items]
Business combination, recognized identifiable assets acquired and liabilities assumed intangible assets other than goodwill		$ 900
Acquired finite lived intangible asset useful life		10 years
INTEX Millwork Solutions, LLC
Business Acquisition [Line Items]
Date of acquisition	Aug. 01, 2022
Purchase price	$ 25,700	$ 25,732
Payments to acquire businesses, cash	19,900
Contingent consideration	$ 5,800	6,200
Business combination, recognized identifiable assets acquired and liabilities assumed intangible assets other than goodwill		9,300
Goodwill		$ 6,557

Business Combinations - Summary

Business Combinations - Summary of Preliminary Allocation of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Aug. 01, 2022
Business Acquisition [Line Items]
Goodwill	$ 993,995	$ 993,995
INTEX Millwork Solutions, LLC
Business Acquisition [Line Items]
Cash and cash equivalents	4,279
Trade receivables	790
Inventories	1,902
Other current assets	52
Property and equipment	3,612
Intangible assets	9,300
ROU assets	580
Accounts payable	(250)
Accrued expenses	(510)
Current lease liabilities	(114)
Noncurrent lease liabilities	(466)
Total identifiable assets	19,175
Goodwill	6,557
Net assets acquired/total consideration	25,732		$ 25,700
Less: cash acquired	(4,279)
Total consideration net of cash acquired	$ 21,453

Inventories - Schedule of Inven

Inventories - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Sep. 30, 2022
Inventory Disclosure [Abstract]
Raw materials	$ 66,026	$ 72,464
Work in process	42,190	39,829
Finished goods	212,667	187,612
Total inventories	$ 320,883	$ 299,905

Property, Plant and Equipment_3

Property, Plant and Equipment - Net - Summary of Property, Plant and Equipment - Net (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Sep. 30, 2022
Property Plant And Equipment [Abstract]
Land and improvements	$ 4,829	$ 3,350
Buildings and improvements	115,451	110,300
Manufacturing equipment	565,320	540,536
Computer equipment	28,882	28,198
Furniture and fixtures	7,167	6,867
Vehicles	929	941
Property Plant and Equipment Excluding Construction in Progress Gross	722,578	690,192
Construction in progress	124,282	140,566
Property and Equipment, Gross	846,860	830,758
Accumulated depreciation	(333,730)	(312,845)
Total property and equipment – net	$ 513,130	$ 517,913

Property, Plant and Equipment_4

Property, Plant and Equipment - Net - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Property Plant And Equipment [Abstract]
Depreciation	$ 22	$ 15.2
Interest Capitalized	$ 1.3	$ 1.1

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Net - Summary of Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Sep. 30, 2022
Goodwill [Line Items]
Goodwill, beginning balance	$ 993,995
Acquisitions	0
Goodwill, ending balance	993,995
Accumulated impairment losses	32,200	$ 32,200
Residential [Member]
Goodwill [Line Items]
Goodwill, beginning balance	953,606
Acquisitions	0
Goodwill, ending balance	953,606
Commercial [Member]
Goodwill [Line Items]
Goodwill, beginning balance	40,389
Acquisitions	0
Goodwill, ending balance	40,389
Accumulated impairment losses	$ 32,200	$ 32,200

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Net - Additional Information (Detail) - USD ($)	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2022
Goodwill And Intangible Assets Disclosure [Abstract]
Indefinite lived intangible assets other than goodwill	$ 0		$ 0
Amortization expense	$ 11,837,000	$ 12,880,000
Remaining weighted-average amortization period for acquired intangible assets	11 years 3 months 18 days

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Net - Summary of Finite-Lived Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022
Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 720,068	$ 720,068
Accumulated Amortization	(486,070)	(474,233)
Net Carrying Value	$ 233,998	245,835
Proprietary Knowledge [Member]
Finite Lived Intangible Assets [Line Items]
Acquired finite lived intangible asset useful life	10 years
Gross Carrying Value	$ 300,400	300,400
Accumulated Amortization	(240,484)	(236,024)
Net Carrying Value	$ 59,916	64,376
Trademarks [Member]
Finite Lived Intangible Assets [Line Items]
Acquired finite lived intangible asset useful life	10 years
Gross Carrying Value	$ 230,240	230,240
Accumulated Amortization	(154,692)	(151,259)
Net Carrying Value	$ 75,548	78,981
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Acquired finite lived intangible asset useful life	12 years
Gross Carrying Value	$ 176,852	176,852
Accumulated Amortization	(81,672)	(78,015)
Net Carrying Value	95,180	98,837
Patents [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	8,500	8,500
Accumulated Amortization	(5,216)	(4,950)
Net Carrying Value	3,284	3,550
Other intangibles [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	4,076	4,076
Accumulated Amortization	(4,006)	(3,985)
Net Carrying Value	$ 70	$ 91
Minimum [Member] | Proprietary Knowledge [Member]
Finite Lived Intangible Assets [Line Items]
Acquired finite lived intangible asset useful life	10 years	10 years
Minimum [Member] | Trademarks [Member]
Finite Lived Intangible Assets [Line Items]
Acquired finite lived intangible asset useful life	5 years	5 years
Minimum [Member] | Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Acquired finite lived intangible asset useful life	12 years	12 years
Minimum [Member] | Patents [Member]
Finite Lived Intangible Assets [Line Items]
Acquired finite lived intangible asset useful life	9 years	9 years
Minimum [Member] | Other intangibles [Member]
Finite Lived Intangible Assets [Line Items]
Acquired finite lived intangible asset useful life	3 years	3 years
Maximum [Member] | Proprietary Knowledge [Member]
Finite Lived Intangible Assets [Line Items]
Acquired finite lived intangible asset useful life	15 years	15 years
Maximum [Member] | Trademarks [Member]
Finite Lived Intangible Assets [Line Items]
Acquired finite lived intangible asset useful life	20 years	20 years
Maximum [Member] | Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Acquired finite lived intangible asset useful life	19 years	19 years
Maximum [Member] | Patents [Member]
Finite Lived Intangible Assets [Line Items]
Acquired finite lived intangible asset useful life	10 years	10 years
Maximum [Member] | Other intangibles [Member]
Finite Lived Intangible Assets [Line Items]
Acquired finite lived intangible asset useful life	15 years	15 years

Composition of Certain Balanc_3

Composition of Certain Balance Sheet Accounts - Summary of Allowance for Doubtful Accounts (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Allowance For Credit Loss [Abstract]
Beginning balance	$ 1,397	$ 1,109
Provision	277	(45)
Bad debt write-offs		10
Ending balance	$ 1,674	$ 1,074

Composition of Certain Balanc_4

Composition of Certain Balance Sheet Accounts - Summary of Accrued Expenses and Other Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Sep. 30, 2022
Accrued Liabilities And Other Liabilities [Abstract]
Employee related liabilities	$ 31,627	$ 36,866
Construction in progress	9,236	9,032
Marketing	5,379	4,272
Lease liability - operating	5,119	5,223
Lease liability - finance	$ 2,524	$ 2,366
Finance Lease Liability Current Statement Of Financial Position Extensible List	Total accrued expenses and other current liabilities	Total accrued expenses and other current liabilities
Warranty	$ 2,492	$ 2,900
Freight	2,384	1,821
Customer deposits	1,787	2,494
Professional fees	1,466	2,089
Other	5,474	5,526
Total accrued expenses and other current liabilities	$ 67,488	$ 72,589

Debt - Summary of Long-Term Deb

Debt - Summary of Long-Term Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Sep. 30, 2022
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 598,500	$ 600,000
Less unamortized deferred financing costs	(4,533)	(4,712)
Less unamortized original issue discount	(4,241)	(4,409)
Less current portion	(6,000)	(6,000)
Long-term debt—less current portion and unamortized deferred financing costs	583,726	584,879
2022 Term Loan [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	598,500	600,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Less unamortized deferred financing costs	$ (900)	$ (900)

Debt - Summary of Long-Term D_2

Debt - Summary of Long-Term Debt (Detail) (Parenthetical)		3 Months Ended	12 Months Ended
	Apr. 28, 2022	Dec. 31, 2022	Sep. 30, 2022
2022 Term Loan Agreement
Debt Instrument [Line Items]
Debt instrument maturity date	Apr. 28, 2029	Apr. 28, 2029
Debt instrument, description of variable rate basis		SOFR + 2.50% + 0.1%	SOFR + 2.50% + 0.1%
Debt instrument, basis spread on variable rate		2.50%	2.50%
Debt instrument rate		6.92%	4.09%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt instrument maturity date		Mar. 31, 2026
Debt instrument, description of variable rate basis		LIBOR + 1.25%	LIBOR + 1.25%
Debt instrument, basis spread on variable rate		1.25%	1.25%

Debt - Additional Information (

Debt - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended		12 Months Ended
	Jan. 26, 2023	Apr. 28, 2022	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2022
Debt Instrument [Line Items]
Long-term Debt, Gross			$ 598,500		$ 600,000
Deferred financing cost			$ 4,533		$ 4,712
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt instrument maturity date			Mar. 31, 2026
Debt instrument, basis spread on variable rate			1.25%		1.25%
Deferred financing cost			$ 900		$ 900
Aggregate maximum borrowing capacity			150,000
Outstanding letters of credit			2,800		$ 2,800
Option to increase the commitments			$ 100,000
Debt instrument interest rate description			interest rate has been reduced by 25 basis points to (i) for ABR borrowings, the highest of (a) the Federal Funds Rate plus 50 basis points, (b) the prime rate and (c) the LIBOR as of such date for a deposit in U.S. dollars with a maturity of one month plus 100 basis points, plus, in each case, a spread of 25 to 75 basis points, based on average historical availability, or (ii) for Eurocurrency borrowings, adjusted LIBOR plus a spread of 125 to 175 basis points, based on average historical availability.
Debt instrument, description of variable rate basis			LIBOR + 1.25%		LIBOR + 1.25%
Line of credit facility, commitment fee description			If the average daily used percentage is greater than 50%, the commitment fee equals 25 basis points, and if the average daily used percentage is less than or equal to 50%, the commitment fee equals 37.5 basis points.
Line of credit facility, commitment fee amount			$ 100	$ 100
Debt instrument, covenant description			(i) 10% of the lesser of the aggregate commitments under the Revolving Credit Facility and the borrowing base, and (ii) $12.5 million
Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Debt instrument maturity date			Mar. 31, 2026
Revolving Credit Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Debt instrument maturity date			May 09, 2022
Revolving Credit Facility [Member] | CPG International LLC [Member]
Debt Instrument [Line Items]
Outstanding letters of credit			$ 0		$ 0
Available borrowing capacity			$ 147,200
Debt instrument, covenant description			CPG International LLC is also required to make mandatory prepayments (i) when aggregate borrowings exceed commitments or the applicable borrowing base and (ii) during “cash dominion,” which occurs if (a) the availability under the Revolving Credit Facility is less than the greater of (i) $12.5 million and (ii) 10% of the lesser of (x) $150.0 million and (y) the borrowing base, for five consecutive business days or (b) certain events of default have occurred and are continuing.
Revolving Credit Facility [Member] | CPG International LLC [Member] | Maximum [Member]
Debt Instrument [Line Items]
Maximum fixed charge coverage ratio			100
Revolving Credit Facility [Member] | CPG International LLC [Member] | Minimum [Member]
Debt Instrument [Line Items]
Minimum fixed charge coverage ratio			100
Revolving Credit Facility [Member] | Abr Borrowings
Debt Instrument [Line Items]
Debt instrument interest rate description			(i) for ABR borrowings, the highest of (a) the Federal Funds Rate plus 50 basis points, (b) the prime rate and (c) the LIBOR as of such date for a deposit in U.S. dollars with a maturity of one month plus 100 basis points, plus, in each case, a spread of 25 to 75 basis points, based on average historical availability,
Revolving Credit Facility [Member] | Eurocurrency Borrowings [Member]
Debt Instrument [Line Items]
Debt instrument interest rate description			for Eurocurrency borrowings, adjusted LIBOR plus a spread of 125 to 175 basis points, based on average historical availability
Federal Funds Rate | Revolving Credit Facility [Member] | Abr Borrowings
Debt Instrument [Line Items]
Debt instrument, description of variable rate basis			Federal Funds Rate plus 50 basis points
Team SOFR | Revolving Credit Facility [Member] | CPG International LLC [Member] | Subsequent Event
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	0.10%
Prime Rate [Member] | Revolving Credit Facility [Member] | Abr Borrowings
Debt Instrument [Line Items]
Debt instrument, description of variable rate basis			prime rate
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member] | Abr Borrowings
Debt Instrument [Line Items]
Debt instrument, description of variable rate basis			LIBOR as of such date for a deposit in U.S. dollars with a maturity of one month plus 100 basis points, plus, in each case, a spread of 25 to 75 basis points
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member] | Eurocurrency Borrowings [Member]
Debt Instrument [Line Items]
Debt instrument, description of variable rate basis			LIBOR plus a spread of 125 to 175 basis points
2022 Term Loan Agreement
Debt Instrument [Line Items]
Long-term Debt, Gross		$ 600,000	$ 598,500		$ 600,000
Debt instrument maturity date		Apr. 28, 2029	Apr. 28, 2029
Percentage of principal amount to be repaid by way of instalments		0.25%
Debt instrument, basis spread on variable rate			2.50%		2.50%
Deferred financing cost			$ 4,500		$ 4,700
Debt instrument, description of variable rate basis			SOFR + 2.50% + 0.1%		SOFR + 2.50% + 0.1%
2022 Term Loan Agreement | Federal Funds Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		0.50%
Applicable margin rate		1.50%
2022 Term Loan Agreement | Team SOFR
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		1%
Applicable margin rate		2.50%
2022 Term Loan Agreement | Alternative Base Rate
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		1.50%

Debt - Summary of Interest Expe

Debt - Summary of Interest Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Interest expense
Other	$ 1,109	$ 866
Amortization - Debt issue costs
Capitalized interest	(1,289)	(1,115)
Interest expense	9,299	4,148
2022 Term Loan Agreement
Interest expense
Interest Expense, debt	8,916
Amortization - Debt issue costs
Amortization of debt issuance costs	179
Term Loan OID	167
Term Loan
Interest expense
Interest Expense, debt		3,884
Amortization - Debt issue costs
Amortization of debt issuance costs		254
Term Loan OID		30
Revolving Credit Facility [Member]
Interest expense
Interest Expense, debt	151	163
Amortization - Debt issue costs
Amortization of debt issuance costs	$ 66	$ 66

Product Warranties - Additional

Product Warranties - Additional Information (Detail)	3 Months Ended
	Dec. 31, 2022
Product Warranties Disclosures [Abstract]
Assurance of product	The Company provides product assurance warranties of various lengths ranging from 5 years to lifetime for limited coverage for a variety of material and workmanship defects based on standard terms and conditions between the Company and its customers.

Product Warranties - Summary of

Product Warranties - Summary of Warranty Reserve Activity (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Product Warranties Disclosures [Abstract]
Beginning balance	$ 15,023	$ 12,699
Adjustments to reserve	(172)	467
Warranty claims payment	(313)	(485)
Ending balance	14,538	12,681
Current portion of accrued warranty	(2,492)	(2,885)
Accrued warranty – less current portion	$ 12,046	$ 9,796

Leases - Additional Information

Leases - Additional Information (Detail)	Dec. 31, 2022
Minimum [Member]
Lessee Lease Description [Line Items]
Renewal options range	1 year
Maximum [Member]
Lessee Lease Description [Line Items]
Renewal options range	20 years

Leases - Summary of Lease Asset

Leases - Summary of Lease Assets and Lease Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Sep. 30, 2022
Assets
ROU operating lease assets	$ 18,670	$ 19,724
Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List	Other assets	Other assets
Finance lease assets	$ 74,035	$ 73,541
Finance Lease Right Of Use Asset Statement Of Financial Position Extensible List	Other assets	Other assets
Total lease assets	$ 92,705	$ 93,265
Current liabilities
Lease liability - operating	$ 5,119	$ 5,223
Operating Lease Liability Current Statement Of Financial Position Extensible List	Accrued expenses and other liabilities	Accrued expenses and other liabilities
Lease liability - finance	$ 2,524	$ 2,366
Finance Lease Liability Current Statement Of Financial Position Extensible List	Accrued expenses and other liabilities	Accrued expenses and other liabilities
Non-Current liabilities
Operating	$ 16,255	$ 17,261
Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List	Other non-current liabilities	Other non-current liabilities
Finance	$ 76,639	$ 75,706
Finance Lease Liability Noncurrent Statement Of Financial Position Extensible List	Other non-current liabilities	Other non-current liabilities
Total lease liabilities	$ 100,537	$ 100,556

Leases - Components of Lease Ex

Leases - Components of Lease Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Operating lease expense	$ 1,501	$ 1,170
Finance lease amortization of assets	1,248	717
Finance lease interest on lease liabilities	1,092	804
Short term	103	42
Sublease income	(71)	(119)
Total lease expense	$ 3,873	$ 2,614

Leases - Supplemental Informati

Leases - Supplemental Information related to Leases (Detail)	Dec. 31, 2022	Sep. 30, 2022
Weighted-average remaining lease term
Operating leases	6 years 9 months 18 days	6 years 10 months 24 days
Finance leases	26 years	26 years 6 months
Weighted-average discount rate
Operating leases	4.20%	4.10%
Finance leases	5.90%	5.90%

Leases - Summary of Maturities

Leases - Summary of Maturities of Lease Liabilities (Detail) $ in Thousands	Dec. 31, 2022 USD ($)
Operating Leases
2023	$ 4,555
2024	4,636
2025	3,780
2026	2,497
2027	1,877
Thereafter	7,695
Total lease payments	25,040
Less: interest	(3,666)
Present value of lease liability	21,374
Finance Leases
2023	5,153
2024	6,741
2025	6,629
2026	6,476
2027	6,070
Thereafter	122,216
Total lease payments	153,285
Less: interest	(74,122)
Present value of lease liability	79,163
Total
2023	9,708
2024	11,377
2025	10,409
2026	8,973
2027	7,947
Thereafter	129,911
Total lease payments	178,325
Less: interest	(77,788)
Present value of lease liability	$ 100,537

Fair Value Of Financial Instr_3

Fair Value Of Financial Instruments - Additional Information (Detail) $ in Thousands		3 Months Ended	12 Months Ended
	Aug. 01, 2022 USD ($)	Dec. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Nov. 30, 2022 USD ($) Agreement	Dec. 29, 2021 USD ($)
Fair Value Of Financial Instruments [Line Items]
Fair value adjustment for contingent consideration		$ 400
StruXure Outdoor, LLC [Member]
Fair Value Of Financial Instruments [Line Items]
Contingent payment arrangements, range of outcomes, value, low		0
Contingent payment arrangements, range of outcomes, value, high		13,900
Contingent consideration		11,400			$ 9,500
Contingent payment compensation expense		1,900	$ 9,500
INTEX Millwork Solutions, LLC
Fair Value Of Financial Instruments [Line Items]
Contingent payment arrangements, range of outcomes, value, low	$ 0
Contingent payment arrangements, range of outcomes, value, high	6,200
Contingent consideration	$ 5,800	6,200
Date of acquisition	Aug. 01, 2022
INTEX Millwork Solutions, LLC | Selling, General and Administrative Expense [Member]
Fair Value Of Financial Instruments [Line Items]
Fair value adjustment for contingent consideration		$ 400
Derivatives [Member]
Fair Value Of Financial Instruments [Line Items]
Number of interest rate swap agreements | Agreement				2
Derivative, notional amount				$ 150,000
Derivative, maturity date		Oct. 31, 2025
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, before tax		$ 1,000
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, after tax		$ 700
Derivatives [Member] | Interest Rate Swap 2 [Member]
Fair Value Of Financial Instruments [Line Items]
Derivative, fixed interest rate				4.39%
Derivatives [Member] | Interest Rate Swap 1 [Member]
Fair Value Of Financial Instruments [Line Items]
Derivative, fixed interest rate				4.48%

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Summary of Fair Values of Interest Rate Derivative Instruments as well as Classification on the Balance Sheet (Detail) - Fair Value, Inputs, Level 2 [Member] - USD ($) $ in Thousands	Dec. 31, 2022	Sep. 30, 2022
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate swaps	$ 1,048
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]	Other current assets	Other current assets
Interest rate swaps	$ 3,491
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other non-current liabilities	Other non-current liabilities

Fair Value Of Financial Instr_5

Fair Value Of Financial Instruments - Summary of Effects of Interest Rate Derivative Instruments (Detail) $ in Thousands	3 Months Ended
	Dec. 31, 2022 USD ($)
Effect Of Cash Flow Hedge Accounting On AOCI [Line Items]
Cash Flow Hedge - Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss)	$ (1,796)
Interest Expense [Member]
Effect Of Cash Flow Hedge Accounting On AOCI [Line Items]
Cash Flow Hedge - Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss)	$ (74)

Fair Value Of Financial Instr_6

Fair Value Of Financial Instruments - Summary of Carrying Values and the Estimated Fair Values of the Debt Financial Instruments (Detail) - 2022 Term Loan due April 28, 2029 [Member] - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Schedule of carrying values and the estimated fair values of the debt financial instruments [Line Items]
Debt instrument maturity date	Apr. 28, 2029
Carrying Value [Member] | Fair Value, Inputs, Level 2 [Member]
Schedule of carrying values and the estimated fair values of the debt financial instruments [Line Items]
Loans payable	$ 598,500	$ 600,000
Estimated Fair Value [Member] | Fair Value, Inputs, Level 2 [Member]
Schedule of carrying values and the estimated fair values of the debt financial instruments [Line Items]
Loans payable	$ 586,530	$ 586,500

Segments - Additional Informati

Segments - Additional Information (Detail)	3 Months Ended
	Dec. 31, 2022 Segment
Segment Reporting [Abstract]
Number of Reportable Segments	2

Segments - Summary of Residenti

Segments - Summary of Residential and Commercial Segment Reporting Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Net sales to customers	$ 216,259	$ 259,708
Adjusted EBITDA
Total Adjusted EBITDA for reporting segments	31,161	74,179
Unallocated net expenses	(16,061)	(15,659)
Adjustments to Income before income tax provision
Depreciation and amortization	(33,840)	(28,082)
Stock-based compensation costs	(3,957)	(4,016)
Acquisition costs	(2,435)	(497)
Other costs	(733)	(485)
Interest expense, net	(9,299)	(4,148)
Income (loss) before income tax provision	(35,164)	21,292
Residential [Member]
Segment Reporting Information [Line Items]
Net sales to customers	179,484	221,133
Adjusted EBITDA
Total Adjusted EBITDA for reporting segments	26,007	69,431
Commercial [Member]
Segment Reporting Information [Line Items]
Net sales to customers	36,775	38,575
Adjusted EBITDA
Total Adjusted EBITDA for reporting segments	$ 5,154	$ 4,748

Segments - Summary of Residen_2

Segments - Summary of Residential and Commercial Segment Reporting Information (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Business Transformation Costs [Line Items]
Business acquisition acquisition costs completed acquisitions	$ 2,435	$ 497
Legal expenses	200	300
Other costs, other	$ 500	100
IPO [Member]
Business Transformation Costs [Line Items]
Costs related to an incentive plan		$ 100

Capital Stock - Additional Info

Capital Stock - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	May 05, 2022
Class Of Stock [Line Items]
Number of shares available for repurchase	$ 311,000,000
Common Class A [Member]
Class Of Stock [Line Items]
Stock repurchase program, shares repurchased	352,760	1,607,664
Average price	$ 21.23	$ 19.58
Reacquisition cost	$ 7,500,000	$ 31,500,000
Common Class A [Member] | Accelerated Share Repurchase Agreement [Member]
Class Of Stock [Line Items]
Stock repurchase program, shares repurchased		2,508,906
Average price		$ 19.93
Reacquisition cost		$ 50,000,000
Common Class A [Member] | Maximum [Member]
Class Of Stock [Line Items]
Stock repurchase program, authorized amount			$ 400,000,000

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expenses	$ 3,957	$ 4,016
Income tax benefit stock based compensation expenses	800	800
Unvested stock compensation not recognised	$ 39,400
Unvested stock awards weighted average remaining period of recognition	2 years 2 months 12 days
Selling, General and Administrative Expense [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expenses	$ 4,000	$ 4,000
2020 Omnibus Incentive Compensation Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum number of shares authorised under share based compensation plan	15,852,319
Common stock shares reserved for future issuance	2,688,067
Stock based compensation period of expiry of stock options	10 years

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Share-Based Payment Award Valuation Assumptions (Detail)	3 Months Ended
	Dec. 12, 2022	Dec. 31, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Risk-free interest rate	3.77%	1.34%
Expected volatility	40%	40%
Expected term (in years)	6 years	6 years
Expected dividend yield	0%	0%

Stock-Based Compensation - Su_2

Stock-Based Compensation - Summary of Stock Option Activities (Detail) $ / shares in Units, $ in Thousands	3 Months Ended
	Dec. 31, 2022 USD ($) $ / shares shares
Performance Shares [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Option, Outstanding | shares	1,410,653
Number of Option, Granted | shares
Number of Option, Exercised | shares
Number of Option, Cancelled/Forfeited | shares	(2,174)
Number of Option, Outstanding | shares	1,408,479
Number of Option, Vested and exercisable | shares	1,408,479
Weighted Average Exercise Price Per Share, Outstanding | $ / shares	$ 23
Weighted Average Exercise Price Per Share, Granted | $ / shares	0
Weighted Average Exercise Price Per Share, Exercised | $ / shares	0
Weighted Average Exercise Price Per Share, Cancelled/Forfeited | $ / shares	23
Weighted Average Exercise Price Per Share, Outstanding | $ / shares	23
Weighted Average Exercise Price Per Share, Vested and exercisable | $ / shares	$ 23
Weighted Average Remaining Contract Term, Outstanding	7 years 1 month 6 days
Weighted Average Remaining Contract Term, Vested and exercisable	7 years 1 month 6 days
Service Based Stock Option Activity [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Option, Outstanding | shares	3,557,194
Number of Option, Granted | shares	250,477
Number of Option, Cancelled/Forfeited | shares	(31,281)
Number of Option, Outstanding | shares	3,776,390
Number of Option, Vested and exercisable | shares	2,179,215
Weighted Average Exercise Price Per Share, Outstanding | $ / shares	$ 25.57
Weighted Average Exercise Price Per Share, Granted | $ / shares	20.18
Weighted Average Exercise Price Per Share, Cancelled/Forfeited | $ / shares	23
Weighted Average Exercise Price Per Share, Outstanding | $ / shares	25.23
Weighted Average Exercise Price Per Share, Vested and exercisable | $ / shares	$ 23.88
Weighted Average Remaining Contract Term, Outstanding	7 years 8 months 12 days
Weighted Average Remaining Contract Term, Vested and exercisable	7 years 3 months 18 days
Weighted Average Intrinsic Value, Outstanding | $	$ 42

Stock-Based Compensation - Su_3

Stock-Based Compensation - Summary of Stock Awards Activity Other Than Options (Detail)	3 Months Ended
	Dec. 31, 2022 $ / shares shares
Service Based Restricted Stock Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Outstanding and unvested | shares	275,628
Number of Shares, Granted | shares
Number of Shares, Vested | shares	(20,483)
Number of Shares, Forfeited | shares	(14,663)
Number of Shares, Outstanding and unvested | shares	240,482
Weighted Average Grant Date Fair Value, Outstanding and unvested | $ / shares	$ 23
Weighted Average Grant Date Fair Value, Granted | $ / shares
Weighted Average Grant Date Fair Value, Vested | $ / shares	23
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	23
Weighted Average Grant Date Fair Value, Outstanding and unvested | $ / shares	$ 23
Performance Based Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Outstanding and unvested | shares	221,469
Number of Shares, Granted | shares	317,033
Number of Shares, Vested | shares
Number of Shares, Forfeited | shares	(4,470)
Number of Shares, Outstanding and unvested | shares	534,032
Weighted Average Grant Date Fair Value, Outstanding and unvested | $ / shares	$ 37.51
Weighted Average Grant Date Fair Value, Granted | $ / shares	20.18
Weighted Average Grant Date Fair Value, Vested | $ / shares
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	38.04
Weighted Average Grant Date Fair Value, Outstanding and unvested | $ / shares	$ 27.22

Stock-Based Compensation - Su_4

Stock-Based Compensation - Summary of Restricted Stock Unit Awards Activity (Detail) - Service Based Restricted Stock Units [Member]	3 Months Ended
	Dec. 31, 2022 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Outstanding and unvested | shares	574,499
Number of Shares, Granted | shares	384,712
Number of Shares, Vested | shares	(78,358)
Number of Shares, Forfeited | shares	(9,601)
Number of Shares, Outstanding and unvested | shares	871,252
Weighted Average Grant Date Fair Value, Outstanding and unvested | $ / shares	$ 31.14
Weighted Average Grant Date Fair Value, Granted | $ / shares	20.17
Weighted Average Grant Date Fair Value, Vested | $ / shares	38.18
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	34.09
Weighted Average Grant Date Fair Value, Outstanding and unvested | $ / shares	$ 25.63

Earnings Per Share - Summary of

Earnings Per Share - Summary of Computation of Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Net income (loss) per common share:
Net income (loss)	$ (25,836)	$ 16,707
Net income (loss) attributable to common stockholders — basic	(25,836)	16,707
Net income (loss) attributable to common stockholders — diluted	$ (25,836)	$ 16,707
Denominator:
Basic	150,877,635	154,407,244
Diluted	150,877,635	156,854,925
Basic	$ (0.17)	$ 0.11
Diluted	$ (0.17)	$ 0.11

Earnings Per Share - Summary _2

Earnings Per Share - Summary of Antidilutive Securities Excluded From Computation of Earnings Per Share (Detail) - shares	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	5,010,161	254,208
Restricted Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	531,462	117,835

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail)	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Effective income tax reconciliation percentage	26.50%	21.50%

Commitments And Contingencies -

Commitments And Contingencies - Additional Information (Detail) - Workmen Compensation [Member] $ in Millions	Sep. 30, 2019 USD ($)
Minimum [Member]
Loss Contingencies [Line Items]
Estimate Of Possible Loss	$ 0.4
Maximum [Member]
Loss Contingencies [Line Items]
Estimate Of Possible Loss	$ 0.5

Condensed Financial Informati_3

Condensed Financial Information of Registrant (Parent Company Only) - Schedule of Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Non-current assets:
Total assets	$ 2,348,701	$ 2,383,091
LIABILITIES AND STOCKHOLDERS' EQUITY:
Total liabilities	935,929	938,648
Stockholders' equity:
Preferred stock, $0.001 par value; 1,000,000 shares authorized and no shares issued or outstanding at December 31, 2022 and September 30, 2022, respectively
Additional paid‑in capital	1,633,827	1,630,378
Accumulated deficit	(138,838)	(113,002)
Accumulated other comprehensive income (loss)	(1,796)
Total stockholders' equity	1,412,772	1,444,443	$ 1,451,151	$ 1,427,164
Total liabilities and stockholders' equity	2,348,701	2,383,091
Treasury stock, at cost, 4,469,330 and 4,116,570 shares at December 31, 2022 and September 30, 2022, respectively	80,576	73,088
Parent Company [Member]
Non-current assets:
Investments in subsidiaries	1,412,772	1,444,443
Total non-current assets	1,412,772	1,444,443
Total assets	1,412,772	1,444,443
Stockholders' equity:
Preferred stock, $0.001 par value; 1,000,000 shares authorized and no shares issued or outstanding at December 31, 2022 and September 30, 2022, respectively
Additional paid‑in capital	1,633,827	1,630,378
Accumulated deficit	(138,838)	(113,002)
Accumulated other comprehensive income (loss)	(1,796)
Total stockholders' equity	1,412,772	1,444,443
Total liabilities and stockholders' equity	1,412,772	1,444,443
Treasury stock, at cost, 4,469,330 and 4,116,570 shares at December 31, 2022 and September 30, 2022, respectively	(80,576)	(73,088)
Common Class A [Member]
Stockholders' equity:
Common stock value	155	155
Common Class A [Member] | Parent Company [Member]
Stockholders' equity:
Common stock value	$ 155	$ 155

Condensed Financial Informati_4

Condensed Financial Information of Registrant (Parent Company Only) - Schedule of Balance Sheets (Parenthetical) (Detail) - $ / shares	Dec. 31, 2022	Sep. 30, 2022
Preferred stock, par value per share	$ 0.001	$ 0.001
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Treasury stock, shares	4,469,330	4,116,570
Common Class A [Member]
Common stock, par value per share	$ 0.001	$ 0.001
Common stock, shares authorized	1,100,000,000	1,100,000,000
Common stock, shares issued	155,196,865	155,157,220
Common Class B [Member]
Common stock, par value per share	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	100	100
Common stock, shares outstanding	100	100
Parent Company [Member]
Preferred stock, par value per share	$ 0.001	$ 0.001
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Treasury stock, shares	4,469,330	4,116,570
Parent Company [Member] | Common Class A [Member]
Common stock, par value per share	$ 0.001	$ 0.001
Common stock, shares authorized	1,100,000,000	1,100,000,000
Common stock, shares issued	155,196,865	155,157,220
Parent Company [Member] | Common Class B [Member]
Common stock, par value per share	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	100	100
Common stock, shares outstanding	100	100

Condensed Financial Informati_5

Condensed Financial Information of Registrant (Parent Company Only) - Schedule of Statements of Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Condensed Statement of Income Captions [Line Items]
Comprehensive income (loss)	$ (27,632)	$ 16,707
Parent Company [Member]
Condensed Statement of Income Captions [Line Items]
Net income (loss) of subsidiaries	(25,836)	16,707
Comprehensive income (loss)	$ (27,632)	$ 16,707

Condensed Financial Informati_6

Condensed Financial Information of Registrant (Parent Company Only) - Additional Information (Detail) - Parent Company [Member] - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Condensed Statement of Income Captions [Line Items]
Minimum threshold percentage of restricted net assets	25%
Cash dividends paid	$ 7.5	$ 0
Share repurchase on open market	$ 7.5