10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2023

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission file number: 001-36557

ADVANCED DRAINAGE SYSTEMS, INC.

(Exact name of registrant as specified in its charter)

Delaware	51-0105665
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)

4640 Trueman Boulevard, Hilliard, Ohio 43026

(Address of Principal Executive Offices, Including Zip Code)

(614) 658-0050

(Registrant’s Telephone Number, Including Area Code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.01 par value per share	WMS	New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one):

Large Accelerated Filer	☒	Accelerated Filer	☐
Non-Accelerated Filer	☐	Smaller Reporting Company	☐
Emerging Growth Company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

As of July 26, 2023, the registrant had 78,692,236 shares of common stock outstanding, which excludes 234,762 shares of unvested restricted common stock. The shares of common stock trade on the New York Stock Exchange under the ticker symbol “WMS.”

TABLE OF CONTENTS

PART I. FINANCIAL INFORMATION
Item 1.	Condensed Consolidated Financial Statements (Unaudited)	Page
	Condensed Consolidated Balance Sheets as of June 30, 2023 and March 31, 2023	3
	Condensed Consolidated Statements of Operations for the three months ended June 30, 2023 and 2022	4
	Condensed Consolidated Statements of Comprehensive Income for the three months ended June 30, 2023 and 2022	5
	Condensed Consolidated Statements of Cash Flows for the three months ended June 30, 2023 and 2022	6
	Condensed Consolidated Statements of Stockholders’ Equity and Mezzanine Equity for the three months ended June 30, 2023 and 2022	7
	Notes to the Condensed Consolidated Financial Statements	8
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	15
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	21
Item 4.	Controls and Procedures	21
PART II. OTHER INFORMATION
Item 1.	Legal Proceedings	22
Item 1A.	Risk Factors	22
Item 2.	Unregistered Sale of Equity Securities and Use of Proceeds	22
Item 3.	Defaults Upon Senior Securities	22
Item 4.	Mine Safety Disclosures	22
Item 5.	Other Information	22
Item 6.	Exhibits	23
Signatures		24

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PART I. FINANCIAL INFORMATION

ADVANCED DRAINAGE SYSTEMS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited) (In thousands, except par value)

	June 30, 2023		March 31, 2023
ASSETS
Current assets:
Cash	$	366,104	$	217,128
Receivables (less allowance for doubtful accounts of $6,734 and $8,227, respectively)	342,338		306,945
Inventories	434,631		463,994
Other current assets	25,450		29,422
Total current assets	1,168,523		1,017,489
Property, plant and equipment, net	747,312		733,059
Other assets:
Goodwill	620,428		620,193
Intangible assets, net	394,837		407,627
Other assets	117,569		122,757
Total assets	$	3,048,669	$	2,901,125
LIABILITIES, MEZZANINE EQUITY AND STOCKHOLDERS’ EQUITY
Current liabilities:
Current maturities of debt obligations	$	13,806	$	14,693
Current maturities of finance lease obligations	10,447		8,541
Accounts payable	205,591		210,111
Other accrued liabilities	137,511		142,400
Accrued income taxes	52,232		3,057
Total current liabilities	419,587		378,802
Long-term debt obligations (less unamortized debt issuance costs of $11,293 and $11,804, respectively)	1,266,797		1,269,391
Long-term finance lease obligations	28,795		32,272
Deferred tax liabilities	158,942		159,056
Other liabilities	62,682		66,744
Total liabilities	1,936,803		1,906,265
Commitments and contingencies (see Note 9)
Mezzanine equity:
Redeemable common stock: $0.01 par value; 9,132 and 9,429 shares outstanding, respectively	148,397		153,220
Total mezzanine equity	148,397		153,220
Stockholders’ equity:
Common stock; $0.01 par value: 1,000,000 shares authorized; 79,651 and 79,057  shares issued, respectively; 69,541 and 69,518 shares outstanding, respectively	11,654		11,647
Paid-in capital	1,147,449		1,134,864
Common stock in treasury, at cost	(977,812)		(920,999)
Accumulated other comprehensive loss	(25,399)		(27,580)
Retained earnings	788,780		626,215
Total ADS stockholders’ equity	944,672		824,147
Noncontrolling interest in subsidiaries	18,797		17,493
Total stockholders’ equity	963,469		841,640
Total liabilities, mezzanine equity and stockholders’ equity	$	3,048,669	$	2,901,125

See accompanying Notes to Condensed Consolidated Financial Statements.

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ADVANCED DRAINAGE SYSTEMS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited) (In thousands, except per share data)

	Three Months Ended June 30,
	2023		2022
Net sales	$	778,046	$	914,186
Cost of goods sold	446,586		562,079
Gross profit	331,460		352,107
Operating expenses:
Selling, general and administrative	86,511		86,520
(Gain) loss on disposal of assets and costs from exit and disposal activities	(13,304)		303
Intangible amortization	12,802		13,677
Income from operations	245,451		251,607
Other expense:
Interest expense	21,712		11,072
Derivative gains and other income, net	(3,549)		(1,902)
Income before income taxes	227,288		242,437
Income tax expense	55,058		55,065
Equity in net income of unconsolidated affiliates	(1,675)		(1,110)
Net income	173,905		188,482
Less: net income attributable to noncontrolling interest	253		1,336
Net income attributable to ADS	$	173,652	$	187,146
Weighted average common shares outstanding:
Basic	78,908		83,144
Diluted	79,634		84,389
Net income per share:
Basic	$	2.20	$	2.25
Diluted	$	2.18	$	2.22

See accompanying Notes to Condensed Consolidated Financial Statements.

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ADVANCED DRAINAGE SYSTEMS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited) (In thousands)

	Three Months Ended June 30,
	2023		2022
Net income	$	173,905	$	188,482
Currency translation gain (loss)	3,232		(3,898)
Comprehensive income	177,137		184,584
Less: other comprehensive income attributable to noncontrolling interest	1,051		5
Less: net income attributable to noncontrolling interest	253		1,336
Total comprehensive income attributable to ADS	$	175,833	$	183,243

See accompanying Notes to Condensed Consolidated Financial Statements.

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ADVANCED DRAINAGE SYSTEMS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited) (In thousands)

	Three Months Ended June 30,
	2023		2022
Cash Flows from Operating Activities
Net income	$	173,905	$	188,482
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	37,240		35,578
Deferred income taxes	573		(1,272)
(Gain) loss on disposal of assets and costs from exit and disposal activities	(13,304)		303
Stock-based compensation	6,903		6,273
Amortization of deferred financing charges	511		344
Fair market value adjustments to derivatives	(36)		(90)
Equity in net income of unconsolidated affiliates	(1,675)		(1,110)
Other operating activities	501		(3,535)
Changes in working capital:
Receivables	(33,406)		(79,616)
Inventories	30,860		8,039
Prepaid expenses and other current assets	(3,699)		(4,840)
Accounts payable, accrued expenses, and other liabilities	45,594		101,209
Net cash provided by operating activities	243,967		249,765
Cash Flows from Investing Activities
Capital expenditures	(42,078)		(36,189)
Proceeds from disposition of assets	19,979		—
Acquisition, net of cash acquired	—		(47,492)
Other investing activities	155		13
Net cash used in investing activities	(21,944)		(83,668)
Cash Flows from Financing Activities
Payments on syndicated Term Loan Facility	(1,750)		(1,750)
Proceeds from Revolving Credit Agreement	—		26,200
Payments on Revolving Credit Agreement	—		(140,500)
Proceeds from Amended Revolving Credit Agreement	—		97,000
Payments on Amended Revolving Credit Agreement	—		(97,000)
Proceeds from Senior Notes due 2030	—		500,000
Debt issuance costs	—		(11,575)
Payments on Equipment Financing	(2,256)		(3,548)
Payments on finance lease obligations	(2,769)		(1,721)
Repurchase of common stock	(47,778)		(57,699)
Cash dividends paid	(11,084)		(10,170)
Proceeds from exercise of stock options	867		1,249
Payment of withholding taxes on vesting of restricted stock units	(8,742)		(22,809)
Net cash (used in) provided by financing activities	(73,512)		277,677
Effect of exchange rate changes on cash	465		(203)
Net change in cash	148,976		443,571
Cash at beginning of period	217,128		20,125
Cash at end of period	$	366,104	$	463,696
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for income taxes	$	1,553	$	5,055
Cash paid for interest	8,499		4,714
Non-cash operating, investing and financing activities:
Repurchase of common stock pending settlement	—		9,662
Share repurchase excise tax accrual	293		—
Acquisition of property, plant and equipment under finance lease and incurred lease obligations	944		1,754
Balance in accounts payable for the acquisition of property, plant and equipment	19,781		16,881

c

See accompanying Notes to Condensed Consolidated Financial Statements.

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ADVANCED DRAINAGE SYSTEMS, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY AND MEZZANINE EQUITY

(Unaudited) (In thousands)

	Common Stock			Paid -In Capital		Common Stock in Treasury				Accumulated Other Compre-hensive Loss		Retained Earnings		Total ADS Stockholders’ Equity		Non- controlling Interest in  Subsidiaries		Total Stock- holders’ Equity		Redeemable Common Stock			Redeemable Convertible Preferred Stock			Total Mezzanine Equity
	Shares	Amount				Shares		Amount												Shares	Amount		Shares	Amount
Balance at April 1, 2022	75,529	$	11,612	$	1,065,628	3,220		$	(318,691)	$	(24,386)	$	158,876	$	893,039	$	16,622	$	909,661	—	—		15,630	$	195,384	$	195,384
Net income	—	—		—		—		—		—		187,146		187,146		1,336		188,482		—	—		—	—		—
Other comprehensive (loss) income	—	—		—		—		—		(3,903)		—		(3,903)		5		(3,898)		—	—		—	—		—
Common stock dividends ($0.12 per share)	—	—		—		—		—		—		(10,200)		(10,200)		—		(10,200)		—	—		—	—		—
Share repurchases	—	—		—		772		(67,361)		—		—		(67,361)		—		(67,361)		—	—		—	—		—
ESOP share conversion	—	—		—		—		—		—		—		—		—		—		12,022	195,384		(15,630)	(195,384)		—
KSOP redeemable common stock conversion	403	4		6,552		—		—		—		—		6,556		—		6,556		(403)	(6,556)		—	—		(6,556)
Exercise of common stock options	67	1		1,248		—		—		—		—		1,249		—		1,249		—	—		—	—		—
Restricted stock awards	81	1		—		24		(2,458)		—		—		(2,457)		—		(2,457)		—	—		—	—		—
Performance-based restricted stock units	527	5		—		205		(20,351)		—		—		(20,346)		—		(20,346)		—	—		—	—		—
Stock-based compensation expense	—	—		6,273		—		—		—		—		6,273		—		6,273		—	—		—	—		—
Balance at June 30, 2022	76,607	$	11,623	$	1,079,701	$	4,221	$	(408,861)	$	(28,289)	$	335,822	$	989,996	$	17,963	$	1,007,959	11,619	$	188,828	—	—		$	188,828
Balance at April 1, 2023	79,057	$	11,647	$	1,134,864	$	9,539	$	(920,999)	$	(27,580)	$	626,215	$	824,147	$	17,493	$	841,640	9,429	$	153,220	—	—		$	153,220
Net income	—	—		—		—		—		—		173,652		173,652		253		173,905		—	—		—	—		—
Other comprehensive income	—	—		—		—		—		2,181		—		2,181		1,051		3,232		—	—		—	—		—
Common stock dividends ($0.14 per share)	—	—		—		—		—		—		(11,087)		(11,087)		—		(11,087)		—	—		—	—		—
Share repurchases	—	—		—		474		(48,071)		—		—		(48,071)		—		(48,071)		—	—		—	—		—
KSOP redeemable common stock conversion	297	3		4,820		—		—		—		—		4,823		—		4,823		(297)	(4,823)		—	—		(4,823)
Exercise of common stock options	21	1		866		—		—		—		—		867		—		867		—	—		—	—		—
Restricted stock awards	76	1		—		25		(2,346)		—		—		(2,345)		—		(2,345)		—	—		—	—		—
Performance-based restricted stock units	200	2		—		72		(6,396)		—		—		(6,394)		—		(6,394)		—	—		—	—		—
Stock-based compensation expense	—	—		6,903		—		—		—		—		6,903		—		6,903		—	—		—	—		—
Other	—	—		(4)		—		—		—		—		(4)		—		(4)		—	—		—	—		—
Balance at June 30, 2023	79,651	$	11,654	$	1,147,449	10,110		$	(977,812)	$	(25,399)	$	788,780	$	944,672	$	18,797	$	963,469	9,132	$	148,397	—	—		$	148,397

See accompanying Notes to Condensed Consolidated Financial Statements.

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ADVANCED DRAINAGE SYSTEMS, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

1.BACKGROUND AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Description of Business - Advanced Drainage Systems, Inc. and subsidiaries (collectively referred to as “ADS” or the “Company”), incorporated in Delaware, designs, manufactures and markets innovative water management solutions in the stormwater and onsite septic wastewater industries, providing superior drainage solutions for use in the construction and agriculture marketplace. ADS’s products are used across a broad range of end markets and applications, including non-residential, infrastructure and agriculture applications.

The Company is managed and reports results of operations in three reportable segments: Pipe, Infiltrator Water Technologies Ultimate Holdings, Inc ("Infiltrator") and International. The Company also reports the results of its Allied Products and all other business segments as Allied Products and Other.

Historically, sales of the Company’s products have been higher in the first and second quarters of each fiscal year due to favorable weather and longer daylight conditions accelerating construction activity during these periods. Seasonal variations in operating results may also be impacted by inclement weather conditions, such as cold or wet weather, which can delay projects.

Basis of Presentation - The Company prepares its Condensed Consolidated Financial Statements in accordance with accounting principles generally accepted in the United States of America (“GAAP”). The Condensed Consolidated Balance Sheet as of March 31, 2023 was derived from audited financial statements included in the Annual Report on Form 10-K for the year ended March 31, 2023 (“Fiscal 2023 Form 10-K”). The accompanying unaudited Condensed Consolidated Financial Statements contain all adjustments, of a normal recurring nature, necessary to present fairly its financial position as of June 30, 2023 and the results of operations for the three months ended June 30, 2023 and cash flows for the three months ended June 30, 2023. The interim Condensed Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements, including the notes thereto, filed in the Company’s Fiscal 2023 Form 10-K.

Principles of Consolidation - The Condensed Consolidated Financial Statements include the Company, its wholly-owned subsidiaries, its majority-owned subsidiaries and variable interest entities (“VIEs”) of which the Company is the primary beneficiary. The Company uses the equity method of accounting for equity investments where it exercises significant influence but does not hold a controlling financial interest. Such investments are recorded in Other assets in the Condensed Consolidated Balance Sheets and the related equity earnings from these investments are included in Equity in net income of unconsolidated affiliates in the Condensed Consolidated Statements of Operations. All intercompany balances and transactions have been eliminated in consolidation.

Recent Accounting Guidance - There have been no new accounting pronouncements issued or adopted since the filing of the Fiscal 2023 Form 10-K that have significance, or potential significance, to the Condensed Consolidated Financial Statements.

2.GAIN ON DISPOSAL OF ASSETS AND COSTS FROM EXIT AND DISPOSAL ACTIVITIES

On April 14, 2023, the Company completed its divestiture of substantially all of the assets of Spartan Concrete, Inc. to a third party purchaser for consideration of $20.0 million. The Company recognized a gain on the sale of $14.9 million on the Condensed Consolidated Statements of Operations. Prior to the divestiture, the Company recorded the results of operations in Allied & Other.

3.REVENUE RECOGNITION

Revenue Disaggregation - The Company disaggregates net sales by Domestic, International and Infiltrator and further disaggregates Domestic and International by product type, consistent with its reportable segment disclosure. This disaggregation level best depicts how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. Refer to “Note 12. Business Segments Information” for the Company’s disaggregation of Net sales by reportable segment.

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Contract Balances - The Company recognizes a contract asset representing the Company’s right to recover products upon the receipt of returned products and a contract liability for the customer refund. The following table presents the balance of the Company’s contract asset and liability as of the periods presented:

(In thousands)	June 30, 2023		March 31, 2023
Contract asset - product returns	$	1,167	$	933
Refund liability	3,857		2,664

4.LEASES

Nature of the Company’s Leases - The Company has operating and finance leases for plants, yards, corporate offices, tractors, trailers and other equipment. The Company’s leases have remaining terms of less than one year to 14 years. A portion of the Company’s yard leases include an option to extend the leases for up to five years. The Company has included renewal options which are reasonably certain to be exercised in its right-of-use assets and lease liabilities.

5.INVENTORIES

Inventories as of the periods presented consisted of the following:

(In thousands)	June 30, 2023		March 31, 2023
Raw materials	$	98,665	$	108,206
Finished goods	335,966		355,788
Total inventories	$	434,631	$	463,994

6.NET INCOME PER SHARE AND STOCKHOLDERS' EQUITY

Net Income per Share - The following table presents information necessary to calculate net income per share for the periods presented, as well as potentially dilutive securities excluded from the weighted average number of diluted common shares outstanding because their inclusion would have been anti-dilutive:

	Three Months Ended June 30,
(In thousands, except per share data)	2023		2022
NET INCOME PER SHARE—BASIC:
Net income available to common stockholders – Basic	$	173,652	$	187,146
Weighted average number of common shares outstanding – Basic	78,908		83,144
Net income per common share – Basic	$	2.20	$	2.25
NET INCOME PER SHARE—DILUTED:
Net income available to common stockholders – Diluted	$	173,652	$	187,146
Weighted average number of common shares outstanding – Basic	78,908		83,144
Assumed restricted stock	52		147
Assumed exercise of stock options	577		757
Assumed performance units	97		341
Weighted average number of common shares outstanding – Diluted	79,634		84,389
Net income per common share – Diluted	$	2.18	$	2.22
Potentially dilutive securities excluded as anti-dilutive	1		24

7.RELATED PARTY TRANSACTIONS

ADS Mexicana - ADS conducts business in Mexico and Central America through its joint venture ADS Mexicana, S.A. de C.V. (“ADS Mexicana”). ADS owns 51% of the outstanding stock of ADS Mexicana and consolidates ADS Mexicana for financial reporting purposes.

On June 6, 2022, the Company and ADS Mexicana amended the Intercompany Revolving Credit Promissory Note (the “Intercompany Note”) with a borrowing capacity of $9.5 million. The Intercompany Note matures on June 8, 2027. The Intercompany Note indemnifies the ADS Mexicana joint venture partner for 49% of any unpaid borrowings. The interest rates under the Intercompany Note are determined by certain base rates or Secured

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Overnight Financing Rate (“SOFR”) plus an applicable margin based on the Leverage Ratio. As of both June 30, 2023 and March 31, 2023, there were no borrowings outstanding under the Intercompany Note.

South American Joint Venture - The Tuberias Tigre - ADS Limitada joint venture (the “South American Joint Venture”) manufactures and sells HDPE corrugated pipe in certain South American markets. ADS owns 50% of the South American Joint Venture. ADS is the guarantor of 50% of the South American Joint Venture’s credit arrangement, and the debt guarantee is shared equally with the joint venture partner. The Company’s maximum potential obligation under this guarantee is $11.0 million as of June 30, 2023. The maximum borrowings permitted under the South American Joint Venture’s credit facility are $22.0 million. The Company does not anticipate any required contributions related to the balance of this credit arrangement. As of June 30, 2023 and March 31, 2023, the outstanding principal balances of the South American Joint Venture’s credit facility including letters of credit were $4.5 million and $5.5 million, respectively. As of June 30, 2023, there were no U.S. dollar denominated loans. The weighted average interest rate as of June 30, 2023 was 11.8% on Chilean peso denominated loans.

8.DEBT

Long-term debt as of the periods presented consisted of the following:

(In thousands)	June 30, 2023		March 31, 2023
Term Loan Facility	$	425,500	$	427,250
Senior Notes due 2027	350,000		350,000
Senior Notes due 2030	500,000		500,000
Revolving Credit Facility	—		—
Equipment Financing	16,396		18,638
Total	1,291,896		1,295,888
Less: Unamortized debt issuance costs	11,293		11,804
Less: Current maturities	13,806		14,693
Long-term debt obligations	$	1,266,797	$	1,269,391

Senior Secured Credit Facilities – In May 2022, the Company entered into a Second Amendment (the "Second Amendment") to the Company's Base Credit Agreement with Barclays Bank PLC, as administrative agent under the Term Loan Facility, PNC Bank, National Association, as new administrative agent under the Revolving Credit Facility. Among other things, the Second Amendment (i) amended the Base Credit Agreement by increasing the Revolving Credit Facility (the "Amended Revolving Credit Facility") from $350 million to $600 million (including an increase of the sub-limit for the swing-line sub-facility from $50 million to $60 million), (ii) extended the maturity date of the Revolving Credit Facility to May 26, 2027, (iii) revised the “applicable margin” to provide an additional step-down to 175 basis points (for Term Benchmark based loans) and 75 basis points (for base rate loans) in the event the consolidated senior secured net leverage ratio is less than 2.00 to 1.00, and (iv) reset the “incremental amount” and the investment basket in non-guarantors and joint ventures. The Second Amendment also revised the reference interest rate from LIBOR to SOFR for both the Amended Revolving Credit Facility and the Term Loan Facility. Letters of credit outstanding at June 30, 2023 and March 31, 2023 amounted to $11.2 million and $9.7 million, respectively, and reduced the availability of the Revolving Credit Facility.

Senior Notes due 2027 – On September 23, 2019, the Company issued $350.0 million aggregate principal amount of 5.0% Senior Notes due 2027 (the “2027 Notes”) pursuant to an Indenture, dated September 23, 2019 (the “2027 Indenture”), among the Company, the guarantors party thereto (the “Guarantors”) and U.S. Bank National Association, as Trustee (the “Trustee”).

Senior Notes due 2030 – On June 9, 2022, the Company issued $500.0 million aggregate principal amount of 6.375% Senior Notes due 2030 (the “2030 Notes”) pursuant to an Indenture, dated June 9, 2022 (the "2030 Indenture"), among the Company, the Guarantors and the Trustee.

Equipment Financing – The assets under the Equipment Financing acquired are titled to the Company and included in Property, plant and equipment, net on the Company's Condensed Consolidated Balance Sheet. The equipment financing has an initial term of between 12 and 84 months, based on the life of the equipment, and bears a weighted average interest of 1.6% as of June 30, 2023. The current portion of the equipment financing is $6.8 million, and the long-term portion is $9.6 million at June 30, 2023.

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Valuation of Debt - The carrying amounts of current financial assets and liabilities approximate fair value because of the immediate or short-term maturity of these items. The following table presents the carrying and fair value of the Company’s 2027 Notes, 2030 Notes and Equipment Financing for the periods presented:

	June 30, 2023				March 31, 2023
(In thousands)	Fair Value		Carrying Value		Fair Value		Carrying Value
Senior Notes due 2027	$	332,371	$	350,000	$	333,970	$	350,000
Senior Notes due 2030	493,510		500,000		496,605		500,000
Equipment Financing	15,828		16,396		17,921		18,638
Total fair value	$	841,709	$	866,396	$	848,496	$	868,638

The fair values of the 2027 Notes and 2030 Notes were determined based on quoted market data for the Company’s 2027 Notes and 2030 Notes, respectively. The fair value of the Equipment Financing was determined based on a comparison of the interest rate and terms of such borrowings to the rates and terms of similar debt available for the period. The categorization of the framework used to evaluate the 2027 Notes, 2030 Notes and Equipment Financing are considered Level 2. The Company believes the carrying amount on the remaining long-term debt, including the Term Loan Facility and Revolving Credit Facility, is not materially different from its fair value as the interest rates and terms of the borrowings are similar to currently available borrowings.

9.COMMITMENTS AND CONTINGENCIES

Purchase Commitments - The Company has historically secured supplies of resin raw material by agreeing to purchase quantities during a future given period at a fixed price. These purchase contracts typically ranged from 1 to 12 months and occur in the ordinary course of business. The Company does not have any outstanding purchase commitments with fixed price and quantity as of June 30, 2023. The Company also enters into equipment purchase contracts with manufacturers.

Litigation and Other Proceedings – The Company is involved from time to time in various legal proceedings that arise in the ordinary course of business, including but not limited to commercial disputes, environmental matters, employee related claims, intellectual property disputes and litigation in connection with transactions including acquisitions and divestitures. The Company does not believe that such litigation, claims, and administrative proceedings will have a material adverse impact on the Company’s financial position or results of operations. The Company records a liability when a loss is considered probable, and the amount can be reasonably estimated.

10.INCOME TAXES

The Company’s effective tax rate will vary based on a variety of factors, including overall profitability, the geographical mix of income before taxes and related tax rates in jurisdictions where it operates and other one-time charges, as well as the occurrence of discrete events. For the three months ended June 30, 2023 and 2022, the Company utilized an effective tax rate of 24.2% and 22.7%, respectively, to calculate its provision for income taxes. State and local income taxes increased the effective rate for the three months ended June 30, 2023 and 2022. Additionally, the discrete income tax benefit related to the stock-based compensation windfall decreased the effective tax rate for the three months ended June 30, 2022.

11.STOCK-BASED COMPENSATION

ADS has several programs for stock-based payments to employees and non-employee members of its Board of Directors, including stock options, performance-based restricted stock units and restricted stock. The Company recognized stock-based compensation expense in the following line items of the Condensed Consolidated Statements of Operations for the periods presented:

	Three Months Ended June 30,
(In thousands)	2023		2022
Component of income before income taxes:
Cost of goods sold	$	813	$	674
Selling, general and administrative expenses	6,090		5,599
Total stock-based compensation expense	$	6,903	$	6,273

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The following table summarizes stock-based compensation expense by award type for the periods presented:

	Three Months Ended June 30,
(In thousands)	2023		2022
Stock-based compensation expense:
Stock Options	$	1,434	$	1,279
Restricted Stock	2,027		1,761
Performance-based Restricted Stock Units	2,884		2,740
Non-Employee Directors	558		493
Total stock-based compensation expense	$	6,903	$	6,273

2017 Omnibus Incentive Plan - The 2017 Incentive Plan provides for the issuance of a maximum of 5.0 million shares of the Company’s common stock for awards made thereunder, which awards may consist of stock options, restricted stock, restricted stock units, stock appreciation rights, phantom stock, cash-based awards, performance awards (which may take the form of performance cash, performance units or performance shares) or other stock-based awards.

Restricted Stock – During the three months ended June 30, 2023, the Company granted 0.1 million shares of restricted stock with a grant date fair value of $11.0 million.

Performance-based Restricted Stock Units ("Performance Units") – During the three months ended June 30, 2023, the Company granted 0.1 million performance share units at a grant date fair value of $8.7 million.

Options – During the three months ended June 30, 2023, the Company granted 0.2 million nonqualified stock options under the 2017 Incentive Plan with a grant date fair value of $7.4 million. The Company estimates the fair value of stock options using a Black-Scholes option-pricing model. The following table summarizes the assumptions used to estimate the fair value of stock-options during the period presented:

	Three Months Ended June 30, 2023
Common stock price	$96.51
Expected stock price volatility	45.6%
Risk-free interest rate	3.8%
Weighted-average expected option life (years)	6
Dividend yield	0.58%

12.BUSINESS SEGMENTS INFORMATION

The Company operates its business in three distinct reportable segments: “Pipe”, “International” and “Infiltrator.” “Allied Products & Other” represents the Company’s Allied Products and all other business segments. The Chief Operating Decision Maker (the “CODM”) evaluates segment reporting based on Net Sales and Segment Adjusted Gross Profit. The Company calculated Segment Adjusted Gross Profit as Net sales less Costs of goods sold, depreciation and amortization, stock-based compensation and non-cash charges. A measure of assets is not applicable, as segment assets are not regularly reviewed by the CODM for evaluating performance or allocating resources.

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The following table sets forth reportable segment information with respect to the amount of Net sales contributed by each class of similar products for the periods presented:

	Three Months Ended
	June 30, 2023						June 30, 2022
(In thousands)	Net Sales		Intersegment Net Sales		Net Sales from External Customers		Net Sales		Intersegment Net Sales		Net Sales from External Customers
Pipe	$	428,572	$	(8,144)	$	420,428	$	524,857	$	(9,874)	$	514,983
Infiltrator	141,486		(18,578)		122,908		166,290		(28,906)		137,384
International
International - Pipe	37,178		(528)		36,650		53,419		(5,859)		47,560
International - Allied Products & Other	15,598		—		15,598		18,095		—		18,095
Total International	52,776		(528)		52,248		71,514		(5,859)		65,655
Allied Products & Other	183,445		(983)		182,462		198,909		(2,745)		196,164
Intersegment Eliminations	(28,233)		28,233		—		(47,384)		47,384		—
Total Consolidated	$	778,046	$	—	$	778,046	$	914,186	$	—	$	914,186

The following sets forth certain financial information attributable to the reportable segments for the periods presented:

	Three Months Ended June 30,
(In thousands)	2023		2022
Segment Adjusted Gross Profit
Pipe	$	160,649	$	168,579
Infiltrator	74,264		75,794
International	16,029		20,484
Allied Products & Other	106,185		109,041
Intersegment Eliminations	(2,055)		(815)
Total	$	355,072	$	373,083
Depreciation and Amortization
Pipe	$	14,728	$	12,865
Infiltrator	5,358		4,867
International	1,238		1,371
Allied Products & Other(a)	15,916		16,475
Total	$	37,240	$	35,578
Capital Expenditures
Pipe	$	29,604	$	20,274
Infiltrator	5,454		12,532
International	1,149		913
Allied Products & Other(a)	5,871		2,470
Total	$	42,078	$	36,189

(a)Includes depreciation, amortization and capital expenditures not allocated to a reportable segment. The amortization expense of Infiltrator intangible assets is included in Allied Products & Other.

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	Three Months Ended June 30,
(In thousands)	2023		2022
Reconciliation of Segment Adjusted Gross Profit:
Total Gross Profit	$	331,460	$	352,107
Depreciation and Amortization	22,799		20,302
Stock-based compensation expense	813		674
Total Segment Adjusted Gross Profit	$	355,072	$	373,083

13.SUBSEQUENT EVENTS

Common Stock Dividend - During the second quarter of fiscal 2024, the Company declared a quarterly cash dividend of $0.14 per share of common stock. The dividend is payable on September 15, 2023 to stockholders of record at the close of business on September 1, 2023.

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Item 2.         Management’s Discussion and Analysis of Financial Condition and Results of Operations

Unless the context otherwise indicates or requires, as used in this Quarterly Report on Form 10-Q ("Form 10-Q"), the terms “we,” “our,” “us,” “ADS” and the “Company” refer to Advanced Drainage Systems, Inc. and its directly- and indirectly-owned subsidiaries as a combined entity, except where it is clear that the terms mean only Advanced Drainage Systems, Inc. exclusive of its subsidiaries. We consolidate our joint ventures for purposes of GAAP, except for our South American Joint Venture.

Our fiscal year begins on April 1 and ends on March 31. Unless otherwise noted, references to “year” pertain to our fiscal year. For example, 2024 refers to fiscal 2024, which is the period from April 1, 2023 to March 31, 2024.

The following discussion and analysis of the financial condition and results of our operations should be read in conjunction with our Condensed Consolidated Financial Statements and related footnotes included elsewhere in this Form 10-Q and with the audited Consolidated Financial Statements included in our Fiscal 2023 Form 10-K, as filed with the Securities and Exchange Commission (the “SEC”) on May 18, 2023. In addition to historical condensed consolidated financial information, the following discussion contains forward-looking statements that reflect our plans, estimates and beliefs. Our actual results could differ materially from those discussed in the forward-looking statements. This discussion contains forward-looking statements that are based on the beliefs of our management, as well as assumptions made by, and information currently available to, our management. Our actual results could differ materially from those discussed in the forward-looking statements. For more information, see the section below entitled “Forward Looking Statements.”

Overview

ADS is the leading manufacturer of innovative water management solutions in the stormwater and onsite septic wastewater industries, providing superior drainage solutions for use in the construction and agriculture marketplaces. Our innovative products, for which we hold many patents, are used across a broad range of end markets and applications, including non-residential, infrastructure and agriculture applications. We have established a leading position in many of these end markets by leveraging our national sales and distribution platform, industry-acclaimed engineering support, overall product breadth and scale plus manufacturing excellence.

Executive Summary

First Quarter Fiscal 2024 Results

•Net sales decreased 14.9% to $778.0 million

•Net income decreased 7.7% to $173.9 million

•Net income per diluted share decreased 1.7% to $2.18

•Adjusted EBITDA, a non-GAAP measure, decreased 5.9% to $281.3 million

•Cash provided by operating activities decreased 2.3% to $244.0 million

•Free cash flow, a non-GAAP measure, decreased 5.5% to $201.9 million

Net sales decreased $136.1 million, or 14.9%, to $778.0 million, as compared to $914.2 million in the prior year quarter. Domestic pipe sales decreased $96.3 million, or 18.3%, to $428.6 million. Domestic allied products & other sales decreased $15.5 million, or 7.8%, to $183.4 million. Infiltrator sales decreased $24.8 million, or 14.9%, to $141.5 million. The decrease in domestic net sales was primarily driven by lower demand in the U.S. construction end markets. International sales decreased $18.7 million, or 26.2%, to $52.8 million.

Gross profit decreased $20.6 million, or 5.9%, to $331.5 million as compared to $352.1 million in the prior year. The decrease in gross profit is primarily due to the decrease in volume and higher manufacturing costs, partially offset by favorable pricing and material costs.

Adjusted EBITDA, a non-GAAP measure, decreased $17.7 million, or 5.9%, to $281.3 million, as compared to $299.0 million in the prior year. As a percentage of Net sales, Adjusted EBITDA was 36.2% as compared to 32.7% in the prior year.

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Results of Operations

Comparison of the Three Months Ended June 30, 2023 to the Three Months Ended June 30, 2022

The following table summarizes our operating results as a percentage of Net sales that have been derived from our Condensed Consolidated Financial Statements for the periods presented. We believe this presentation is useful to investors in comparing historical results.

Consolidated Statements of Operations data:	For the Three Months Ended June 30,
(In thousands)	2023				2022
Net sales	$	778,046	100.0	%	$	914,186	100.0	%
Cost of goods sold	446,586		57.4		562,079		61.5
Gross profit	331,460		42.6		352,107		38.5
Selling, general and administrative	86,511		11.1		86,520		9.5
(Gain) loss on disposal of assets and costs from exit and disposal activities	(13,304)		(1.7)		303		—
Intangible amortization	12,802		1.6		13,677		1.5
Income from operations	245,451		31.5		251,607		27.5
Interest expense	21,712		2.8		11,072		1.2
Derivative gains and other income, net	(3,549)		(0.5)		(1,902)		(0.2)
Income before income taxes	227,288		29.2		242,437		26.5
Income tax expense	55,058		7.1		55,065		6.0
Equity in net income of unconsolidated affiliates	(1,675)		(0.2)		(1,110)		(0.1)
Net income	173,905		22.4		188,482		20.6
Less: net income attributable to noncontrolling interest	253		—		1,336		0.1
Net income attributable to ADS	$	173,652	22.3	%	$	187,146	20.5	%

Net sales - The following table presents Net sales to external customers by reportable segment for the three months ended June 30, 2023 and 2022.

(Amounts in thousands)	2023		2022		$ Variance		% Variance
Pipe	$	420,428	$	514,983	$	(94,555)	(18.4)	%
Infiltrator	122,908		137,384		(14,476)		(10.5)
International	52,248		65,655		(13,407)		(20.4)
Allied Products & Other	182,462		196,164		(13,702)		(7.0)
Total Consolidated	$	778,046	$	914,186	$	(136,140)	(14.9)	%

Our consolidated Net sales for the three months ended June 30, 2023 decreased by $136.1 million, or 14.9%, compared to the same period in fiscal 2023. The decrease in Net sales was primarily a result of lower volume at our domestic Pipe and Infiltrator segments. The decrease in our International segment was driven by volume decreases in the Canadian and Mexican businesses. The decrease in Allied Products & Other was driven primarily by volume decreases partially offset by improvements in price/mix.

Cost of goods sold and Gross profit - The following table presents gross profit by reportable segment for the three months ended June 30, 2023 and 2022.

(Amounts in thousands)	2023		2022		$ Variance		% Variance
Pipe	$	145,256	$	155,099	$	(9,843)	(6.3)	%
Infiltrator	68,867		70,869		(2,002)		(2.8)
International	14,791		19,109		(4,318)		(22.6)
Allied Products & Other	104,601		107,845		(3,244)		(3.0)
Intersegment eliminations	(2,055)		(815)		(1,240)		152.1
Total gross profit	$	331,460	$	352,107	$	(20,647)	(5.9)	%

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Our consolidated Cost of goods sold for the three months ended June 30, 2023 decreased by $115.5 million, or 20.5%, and our consolidated Gross profit decreased by $20.6 million, or 5.9%, compared to the same period in fiscal 2023. The decrease in our gross profit was primarily due to a decrease in volume and lower material and transportation costs.

Selling, general and administrative expenses

	Three Months Ended June 30,
(Amounts in thousands)	2023			2022
Selling, general and administrative expenses	$	86,511		$	86,520
% of Net sales	11.1		%	9.5		%

Selling, general and administrative expenses for three months ended June 30, 2023 decreased from the same period in fiscal 2023 and as a percentage of sales, increased by 1.6%. The increase in Selling, general and administrative expenses as a percentage of revenue is the result of increased headcount and decreased sales.

(Gain) loss on disposal of assets and costs from exit and disposal activities - The gain on disposal of assets in the current year was due to the sale of Spartan Concrete.

Interest expense - Interest expense increased $10.6 million in the three months ended June 30, 2023 compared to the same period in the previous fiscal year. The increase was primarily due to increased average debt levels and an increase in interest rates.

Income tax expense - The following table presents the effective tax rates for the periods presented:

	Three Months Ended June 30,
	2023		2022
Effective tax rate	24.2	%	22.7	%

The change in the effective tax rate for the three months ended June 30, 2023 was primarily related to the decrease of the discrete income tax benefit related to the stock-based compensation windfall. See “Note 10. Income Taxes” for additional information.

Adjusted EBITDA and Adjusted EBITDA Margin - Adjusted EBITDA and Adjusted EBITDA Margin, which are non-GAAP financial measures, have been presented in this Form 10-Q as supplemental measures of financial performance that are not required by, or presented in accordance with GAAP and should not be considered as alternatives to net income as measures of financial performance or cash flows from operations or any other performance measure derived in accordance with GAAP. We calculate Adjusted EBITDA as net income (loss) before interest, income taxes, depreciation and amortization, stock-based compensation expense, non-cash charges and certain other expenses. We calculate Adjusted EBITDA Margin as Adjusted EBITDA divided by net sales.

Adjusted EBITDA and Adjusted EBITDA Margin are included in this Form 10-Q because they are key metrics used by management and our board of directors to assess our consolidated financial performance. These non-GAAP financial measures are frequently used by analysts, investors and other interested parties to evaluate companies in our industry. In addition to covenant compliance and executive performance evaluations, we use these non-GAAP financial measures to supplement GAAP measures of performance to evaluate the effectiveness of our consolidated business strategies, to make budgeting decisions and to compare our performance against that of other peer companies using similar measures. We use Adjusted EBITDA Margin to evaluate our ability to generate profitable sales.

Adjusted EBITDA and Adjusted EBITDA Margin contain certain other limitations, including the failure to reflect our cash expenditures, cash requirements for working capital needs, cash expenditures to replace assets being depreciated and amortized and interest expense, or the cash requirements necessary to service interest on principal payments on our indebtedness. In evaluating Adjusted EBITDA and Adjusted EBITDA Margin, you should be aware that in the future we will incur expenses that are the same as or similar to some of the adjustments in this presentation, such as stock-based compensation expense, derivative fair value adjustments, and foreign currency transaction losses. Management compensates for these limitations by relying on our GAAP results and using non-GAAP measures on a supplemental basis.

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The following table presents a reconciliation of Adjusted EBITDA to Net income, the most comparable GAAP measure, for each of the periods presented.

	Three Months Ended June 30,
(In thousands)	2023			2022
Net income	$	173,905		$	188,482
Depreciation and amortization	37,240			35,578
Interest expense	21,712			11,072
Income tax expense	55,058			55,065
EBITDA	287,915			290,197
(Gain) loss on disposal of assets and costs from exit and disposal activities	(13,304)			303
Stock-based compensation expense	6,903			6,273
Transaction costs(a)	1,972			1,715
Interest income	(3,489)			(117)
Other adjustments(b)	1,316			672
Adjusted EBITDA	$	281,313		$	299,043
Adjusted EBITDA Margin	36.2		%	32.7		%

(a)Represents expenses recorded related to legal, accounting and other professional fees incurred in connection with business or asset acquisitions and dispositions.

(b)Includes derivative fair value adjustments, foreign currency transaction (gains) losses, the proportionate share of interest, income taxes, depreciation and amortization related to the South American Joint Venture, which is accounted for under the equity method of accounting and executive retirement expense.

Liquidity and Capital Resources

Historically we have funded our operations through internally generated cash flow supplemented by debt financings, equity issuance and finance and operating leases. These sources have been sufficient historically to fund our primary liquidity requirements, including working capital, capital expenditures, debt service and dividend payments for our common stock. From time to time, we may explore additional financing methods and other means to raise capital. There can be no assurance that any additional financing will be available to us on acceptable terms or at all.

Free Cash Flow - Free cash flow is a non-GAAP financial measure that comprises cash flow from operations less capital expenditures and is used by management and our Board of Directors to assess our ability to generate cash. Accordingly, free cash flow has been presented as a supplemental measure of liquidity that is not required by, or presented in accordance with GAAP, because management believes that free cash flow provides useful information to investors and others in understanding and evaluating our ability to generate cash flow from operations after capital expenditures. Free cash flow is not a GAAP measure of our liquidity and should not be considered as an alternative to cash flow from operating activities as a measure of liquidity or any other liquidity measure derived in accordance with GAAP. Our measure of free cash flow is not necessarily comparable to other similarly titled captions of other companies due to different methods of calculation.

	Three Months Ended June 30,
(Amounts in thousands)	2023		2022
Net cash provided by operating activities	$	243,967	$	249,765
Capital expenditures	(42,078)		(36,189)
Free Cash Flow	$	201,889	$	213,576

The following table presents key liquidity metrics utilized by management including the leverage ratio which is calculated as net debt divided by the trailing twelve months Adjusted EBITDA:

(Amounts in thousands)	June 30, 2023
Total debt (debt and finance lease obligations)	$	1,319,845
Cash	366,104
Net debt (total debt less cash)	953,741
Leverage Ratio	1.1

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The following table summarizes our available liquidity for the period presented:

(Amounts in thousands)	June 30, 2023
Revolver capacity	$	600,000
Less: outstanding borrowings	—
Less: letters of credit	(11,150)
Revolver available liquidity	$	588,850

In addition to the available liquidity above, we have the ability to borrow up to $1.3 billion under our Senior Secured Credit Facility, subject to leverage ratio restrictions.

Working Capital and Cash Flows

As of June 30, 2023, we had $955.0 million in liquidity, including $366.1 million of cash, $588.9 million in borrowings available under our Revolving Credit Agreement, net of outstanding letters of credit. We believe that our cash on hand, together with the availability of borrowings under our Credit Agreement and other financing arrangements and cash generated from operations, will be sufficient to meet our working capital requirements, anticipated capital expenditures, and scheduled principal and interest payments on our indebtedness for at least the next twelve months.

Working Capital - Working capital increased to $748.9 million as of June 30, 2023, from $638.7 million as of March 31, 2023. The increase in working capital is primarily due to an increase in cash and increase in accounts receivable due to seasonality partially offset by an increase in accrued taxes due to the timing of payments and a planned decrease in inventory.

	Three Months Ended June 30,
(Amounts in thousands)	2023		2022
Net cash provided by operating activities	$	243,967	$	249,765
Net cash used in investing activities	(21,944)		(83,668)
Net cash (used in) provided by financing activities	(73,512)		277,677

Operating Cash Flows – Cash flows from operating activities decreased $5.8 million during the three months ended June 30, 2023 primarily driven by changes in net working capital.

Investing Cash Flows - Cash flows used in investing activities during the three months ended June 30, 2023 decreased by $61.7 million compared to the same period in fiscal 2023. The decrease in cash used in investing activities was primarily due to the acquisition of Cultec, Inc. in fiscal 2023.

Capital expenditures totaled $42.1 million and $36.2 million for the three months ended June 30, 2023 and 2022, respectively. Our capital expenditures for the three months ended June 30, 2023 were used primarily to support facility expansions, equipment replacements and technology improvement initiatives.

We currently anticipate that we will make capital expenditures of approximately $200 to $225 million in fiscal year 2024, including approximately $115 million of open orders as of June 30, 2023. Such capital expenditures are expected to be financed using funds generated by operations.

Financing Cash Flows - During the three months ended June 30, 2023, cash used in financing activities included the repurchase of common stock of $47.8 million, $11.1 million of dividend payments, and $8.7 million for shares withheld for tax purposes.

During the three months ended June 30, 2022, cash provided by financing activities included the issuance of $500.0 million of 2030 Notes and proceeds of $123.2 million on our revolving credit facilities. Cash used in financing activities during the three months ended June 30, 2022 included payments of $237.5 million on our revolving credit facilities, repurchase of common stock of $57.7 million, $22.8 million of shares withheld for tax purposes, and $10.1 million of dividend payments.

Cash held by Foreign Subsidiaries - As of June 30, 2023, we had $9.4 million in cash that was held by our foreign subsidiaries, including $2.0 million held by our Canadian subsidiaries. We continue to evaluate our strategy regarding foreign cash, but our earnings in foreign subsidiaries still remain indefinitely reinvested, except for Canada. We plan to repatriate earnings from Canada and believe that there will be no additional tax costs associated with the repatriation of such earnings other than any potential non-U.S. withholding taxes.

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Financing Transactions - There have been no changes in our debt disclosures from those disclosed in “Liquidity and Capital Resources” in our Fiscal 2023 Form 10-K. We are in compliance with our debt covenants as of June 30, 2023.

Off-Balance Sheet Arrangements

Excluding the guarantees of 50% of certain debt of our unconsolidated South American Joint Venture as further discussed in “Note 7. Related Party Transactions” to the Condensed Consolidated Financial Statements, we do not have any other off-balance sheet arrangements. As of June 30, 2023, our South American Joint Venture had approximately $4.5 million of outstanding debt subject to our guarantees. We do not believe that this guarantee will have a current or future effect on our financial condition, results of operations, liquidity or capital resources.

Critical Accounting Policies and Estimates

There have been no changes in critical accounting policies from those disclosed in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our Fiscal 2023 Form 10-K, except as disclosed in "Note 1. Background and Summary of Significant Accounting Policies.”

Forward-Looking Statements

This Form 10-Q includes forward-looking statements. Some of the forward-looking statements can be identified by the use of terms such as “believes,” “expects,” “may,” “will,” “would,” “should,” “could,” “seeks,” “predict,” “potential,” “continue,” “intends,” “plans,” “projects,” “estimates,” “anticipates” or other comparable terms. These forward-looking statements include all matters that are not related to present facts or current conditions or that are not historical facts. They appear in a number of places throughout this Form 10-Q and include statements regarding our intentions, beliefs or current expectations concerning, among other things, our consolidated results of operations, financial condition, liquidity, prospects, growth strategies, and the industries in which we operate and include, without limitation, statements relating to our future performance.

Forward-looking statements are subject to known and unknown risks and uncertainties, many of which are beyond our control. We caution you that forward-looking statements are not guarantees of future performance and that our actual consolidated results of operations, financial condition, liquidity and industry development may differ materially from those made in or suggested by the forward-looking statements contained in this Form 10-Q. In addition, even if our actual consolidated results of operations, financial condition, liquidity and industry development are consistent with the forward-looking statements contained in this Form 10-Q, those results or developments may not be indicative of results or developments in subsequent periods. A number of important factors could cause actual results to differ materially from those contained in or implied by the forward-looking statements, including those reflected in forward-looking statements relating to our operations and business, the risks and uncertainties discussed in this Form 10-Q (including under the headings “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations”), and those described from time to time in our other filings with the SEC. Factors that could cause actual results to differ from those reflected in forward-looking statements relating to our operations and business include:

•fluctuations in the price and availability of resins and other raw materials and our ability to pass any increased costs of raw materials on to our customers in a timely manner;

•disruption or volatility in general business and economic conditions in the markets in which we operate;

•cyclicality and seasonality of the non-residential and residential construction markets and infrastructure spending;

•the risks of increasing competition in our existing and future markets;

•uncertainties surrounding the integration and realization of anticipated benefits of acquisitions;

•the effect of any claims, litigation, investigations or proceedings, including those described under “Item 1. Legal Proceedings” of this Form 10-Q;

•the effect of weather or seasonality;

•the loss of any of our significant customers;

•the risks of doing business internationally;

•the risks of conducting a portion of our operations through joint ventures;

•our ability to expand into new geographic or product markets;

•the risk associated with manufacturing processes;

•the effect of global climate change;

•cybersecurity risks;

•our ability to manage our supply purchasing and customer credit policies;

•our ability to control labor costs and to attract, train and retain highly qualified employees and key personnel;

•our ability to protect our intellectual property rights;

•changes in laws and regulations, including environmental laws and regulations;

•the risks associated with our current levels of indebtedness, including borrowings under our existing credit agreement and outstanding indebtedness under our existing senior notes; and

- 20 -

•other risks and uncertainties, including those listed under “Item 1A. Risk Factors.” in the Fiscal 2023 Form 10-K.

All forward-looking statements are made only as of the date of this report and we do not undertake any obligation, other than as may be required by law, to update or revise any forward-looking statements to reflect future events or developments. Comparisons of results for current and any prior periods are not intended to express any future trends, or indications of future performance, unless expressed as such, and should only be viewed as historical data.

Item 3.         Quantitative and Qualitative Disclosures about Market Risk

We are subject to various market risks, primarily related to changes in interest rates, credit, raw material supply prices and, to a lesser extent, foreign currency exchange rates. Our financial position, results of operations or cash flows may be negatively impacted in the event of adverse movements in the respective market rates or prices in each of these risk categories. Our exposure in each category is limited to those risks that arise in the normal course of business, as we do not engage in speculative, non-operating transactions. Our exposure to market risk has not materially changed from what we previously disclosed in Part II. Item 7A. “Quantitative and Qualitative Disclosures about Market Risk” of our Fiscal 2023 Form 10-K except as disclosed below.

Interest Rate Risk - We are subject to interest rate risk associated with our bank debt. A 1.0% increase in interest rates on our variable-rate debt would increase our annual forecasted interest expense by approximately $4.2 million based on our borrowings as of June 30, 2023. Assuming the Revolving Credit Facility is fully drawn, each 1.0% increase or decrease in the applicable interest rate would change our interest expense by approximately $10.2 million, for the twelve months ended June 30, 2023.

Item 4.         Controls and Procedures

Evaluation of Disclosure Controls and Procedures - The Company’s Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”) are responsible for evaluating the effectiveness of our disclosure controls and procedures as defined in the Securities Exchange Act of 1934, as amended (the “Exchange Act”), rules 13a-15(e) and 15d-15(e). The Company’s disclosure controls and procedures are designed to provide reasonable assurance that the information required to be disclosed in the Company’s reports under the Exchange Act, is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to management, including the Company’s CEO and CFO, as appropriate to allow timely decisions regarding required disclosure. Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives, and management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

Based on the evaluation of our disclosure controls and procedures, our CEO and CFO concluded that the Company’s disclosure controls and procedures were effective as of the end of the period covered by this report.

Changes in Internal Control over Financial Reporting - There were no changes in the Company’s internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) of the Exchange Act that occurred during the three months ended June 30, 2023 that has materially affected, or is reasonably likely to materially affect, internal control over financial reporting.

- 21 -

PART II. OTHER INFORMATION

Item 1.         Legal Proceedings

The Company is involved from time to time in various legal proceedings that arise in the ordinary course of business, including but not limited to commercial disputes, environmental matters, employee related claims, intellectual property disputes and litigation in connection with transactions including acquisitions and divestitures. The Company does not believe that such litigation, claims, and administrative proceedings will have a material adverse impact on the Company’s financial position or results of operations.

Please see “Note 9. Commitments and Contingencies,” of the Condensed Consolidated Financial Statements of this Form 10-Q for more information regarding legal proceedings.

Item 1A.     Risk Factors

Important risk factors that could affect our operations and financial performance, or that could cause results or events to differ from current expectations, are described in “Part I, Item 1A — Risk Factors” of our Fiscal 2023 Form 10-K. These factors are further supplemented by those discussed in “Part II, Item 7A — Quantitative and Qualitative Disclosures about Market Risk” of our Fiscal 2023 Form 10-K and in “Part I, Item 3 — Quantitative and Qualitative Disclosures about Market Risk” and “Part II, Item 1 — Legal Proceedings” of this Form 10-Q.

Item 2.        Unregistered Sale of Equity Securities and Use of Proceeds

In February 2022, our Board of Directors authorized a $1.0 billion common stock repurchase program. Repurchase of common stock will be made in accordance with applicable securities laws. During the three months ended June 30, 2023, the Company repurchased 0.5 million shares of common stock at a cost of $47.8 million. As of June 30, 2023, approximately $377.2 million of common stock may be repurchased under the authorization. The stock repurchase program does not obligate us to acquire any particular amount of common stock and may be suspended or terminated at any time at our discretion.

The following table provides information with respect to repurchases of our common stock by us and our “affiliated purchasers” (as defined by Rule 10b-18(a)(3) under the Exchange Act) during the three months ended June 30, 2023:

Period	Total Number of Shares Purchased	Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plan	Approximate Dollar Value of Shares that May Yet Be Purchased Under the Plan
	(amounts in thousands, except per share data)
April 1, 2023 to April 30, 2023	—	$	—	—	$	424,973
May 1, 2023 to May 31, 2023	216	96.50		216	404,149
June 1, 2023 to June 30, 2023	258	104.43		258	377,195
Total	474	$	100.82	474	$	377,195

Item 3.        Defaults Upon Senior Securities

None.

Item 4.        Mine Safety Disclosures

Not applicable.

Item 5.        Other Information

None.

- 22 -

Item 6. Exhibits

The following exhibits are filed herewith or incorporated herein by reference.

Exhibit Number	Exhibit Description
31.1*	Certification of President and Chief Executive Officer of Advanced Drainage Systems, Inc. pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2*	Certification of Executive Vice President and Chief Financial Officer of Advanced Drainage Systems, Inc. pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1*	Certification of Principal Executive Officer of Advanced Drainage Systems, Inc. pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2*	Certification of Principal Financial Officer of Advanced Drainage Systems, Inc. pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS*	Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH*	Inline XBRL Taxonomy Extension Schema.
101.CAL*	Inline XBRL Taxonomy Extension Calculation Linkbase.
101.DEF*	Inline XBRL Taxonomy Extension Definition Linkbase.
101.LAB*	Inline XBRL Taxonomy Extension Label Linkbase.
101.PRE*	Inline XBRL Taxonomy Extension Presentation Linkbase.
104	The cover page for the Company’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2023, has been formatted in Inline XBRL and contained in Exhibit 101.

* Filed herewith

- 23 -

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Date: August 3, 2023

ADVANCED DRAINAGE SYSTEMS, INC.
By:	/s/ D. Scott Barbour
	D. Scott Barbour
	President and Chief Executive Officer
	(Principal Executive Officer)
By:	/s/ Scott A. Cottrill
	Scott A. Cottrill
	Executive Vice President, Chief Financial Officer and Secretary
	(Principal Financial Officer)
By:	/s/ Tim A. Makowski
	Tim A. Makowski
	Vice President, Controller, and Chief Accounting Officer

- 24 -

EX-31.1

Exhibit 31.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

I, D. Scott Barbour, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q (this “Report”) of the registrant, Advanced Drainage Systems, Inc.;

2.Based on my knowledge, this Report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this Report;

3.Based on my knowledge, the financial statements and other financial information included in this Report fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this Report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15(d)-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this Report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this Report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this Report based on such evaluation; and

d.Disclosed in this Report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 3, 2023

By:	/s/ D. Scott Barbour
D. Scott Barbour
President and Chief Executive Officer
(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

I, Scott A. Cottrill, certify that:

1.I have reviewed this Quarterly Report on Form 10-Q (this “Report”) of the registrant, Advanced Drainage Systems, Inc.;

2.Based on my knowledge, this Report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this Report;

3.Based on my knowledge, the financial statements and other financial information included in this Report fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this Report;

4.The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15(d)-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this Report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this Report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this Report based on such evaluation; and

d.Disclosed in this Report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: August 3, 2023

By:	/s/ Scott A. Cottrill
Scott A. Cottrill
Executive Vice President,
Chief Financial Officer and
Secretary
(Principal Financial Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned hereby certifies, pursuant to the requirement set forth in Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended, and in accordance with 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, in his capacity as the principal executive officer of Advanced Drainage Systems, Inc. (the “Company”), that, to the best of his knowledge, the Quarterly Report on Form 10-Q of the Company for the quarter ended June 30, 2023 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and that the information contained in such report fairly presents, in all material respects, the financial condition and results of operations of the Company as of the dates and for the periods presented in the financial statements included in such report.

August 3, 2023

/s/ D. Scott Barbour

D. Scott Barbour

President and Chief Executive Officer

(Principal Executive Officer)

The foregoing certification is being furnished solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Report or as a separate document. A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned hereby certifies, pursuant to the requirement set forth in Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended, and in accordance with 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, in his capacity as the principal financial officer of Advanced Drainage Systems, Inc. (the “Company”), that, to the best of his knowledge, the Quarterly Report on Form 10-Q of the Company for the quarter ended June 30, 2023 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, and that the information contained in such report fairly presents, in all material respects, the financial condition and results of operations of the Company as of the dates and for the periods presented in the financial statements included in such report.

August 3, 2023

/s/ Scott A. Cottrill

Scott A. Cottrill

Chief Financial Officer

(Principal Financial Officer)

The foregoing certification is being furnished solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Report or as a separate document. A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Cover - shares	3 Months Ended
	Jun. 30, 2023	Jul. 26, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2023
Document Transition Report	false
Entity File Number	001-36557
Entity Registrant Name	ADVANCED DRAINAGE SYSTEMS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	51-0105665
Entity Address, Address Line One	4640 Trueman Boulevard
Entity Address, City or Town	Hilliard
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	43026
City Area Code	614
Local Phone Number	658-0050
Title of each class	Common Stock, $0.01 par value per share
Trading Symbol(s)	WMS
Name of each exchange on which registered	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		78,692,236
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Entity Central Index Key	0001604028
Current Fiscal Year End Date	--03-31

XML

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023
Current assets:
Cash	$ 366,104	$ 217,128
Receivables (less allowance for doubtful accounts of $6,734 and $8,227, respectively)	342,338	306,945
Inventories	434,631	463,994
Other current assets	25,450	29,422
Total current assets	1,168,523	1,017,489
Property, plant and equipment, net	747,312	733,059
Other assets:
Goodwill	620,428	620,193
Intangible assets, net	394,837	407,627
Other assets	117,569	122,757
Total assets	3,048,669	2,901,125
Current liabilities:
Current maturities of debt obligations	13,806	14,693
Current maturities of finance lease obligations	10,447	8,541
Accounts payable	205,591	210,111
Other accrued liabilities	137,511	142,400
Accrued income taxes	52,232	3,057
Total current liabilities	419,587	378,802
Long-term debt obligations (less unamortized debt issuance costs of $11,293 and $11,804, respectively)	1,266,797	1,269,391
Long-term finance lease obligations	28,795	32,272
Deferred tax liabilities	158,942	159,056
Other liabilities	62,682	66,744
Total liabilities	1,936,803	1,906,265
Commitments and contingencies (see Note 9)
Mezzanine equity:
Redeemable common stock: $0.01 par value; 9,132 and 9,429 shares outstanding, respectively	148,397	153,220
Total mezzanine equity	148,397	153,220
Stockholders’ equity:
Common stock; $0.01 par value: 1,000,000 shares authorized; 79,651 and 79,057 shares issued, respectively; 69,541 and 69,518 shares outstanding, respectively	11,654	11,647
Paid-in capital	1,147,449	1,134,864
Common stock in treasury, at cost	(977,812)	(920,999)
Accumulated other comprehensive loss	(25,399)	(27,580)
Retained earnings	788,780	626,215
Total ADS stockholders’ equity	944,672	824,147
Noncontrolling interest in subsidiaries	18,797	17,493
Total stockholders’ equity	963,469	841,640
Total liabilities, mezzanine equity and stockholders’ equity	$ 3,048,669	$ 2,901,125

XML

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023
Allowance for doubtful accounts	$ 6,734	$ 8,227
Unamortized debt issuance costs	$ 11,293	$ 11,804
Common stock, par value per share	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	79,651,000	79,057,000
Common stock, shares outstanding (in shares)	69,541,000	69,518,000
Redeemable Common Stock
Mezzanine equity, par value per share	$ 0.01	$ 0.01
Mezzanine equity, shares outstanding (in shares)	9,132,000	9,429,000
Redeemable Convertible Preferred Stock
Mezzanine equity, shares outstanding (in shares)	0	0

XML

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Income Statement [Abstract]
Net sales	$ 778,046,000	$ 914,186,000
Cost of goods sold	446,586,000	562,079,000
Gross profit	331,460,000	352,107,000
Operating expenses:
Selling, general and administrative	86,511,000	86,520,000
(Gain) loss on disposal of assets and costs from exit and disposal activities	(13,304,000)	303,000
Intangible amortization	12,802,000	13,677,000
Income from operations	245,451,000	251,607,000
Other expense:
Interest expense	21,712,000	11,072,000
Derivative gains and other income, net	(3,549,000)	(1,902,000)
Income before income taxes	227,288,000	242,437,000
Income tax expense	55,058,000	55,065,000
Equity in net income of unconsolidated affiliates	(1,675,000)	(1,110,000)
Net income	173,905,000	188,482,000
Less: net income attributable to noncontrolling interest	253,000	1,336,000
Net income attributable to ADS	$ 173,652,000	$ 187,146,000
Weighted average common shares outstanding:
Basic (in shares)	78,908	83,144
Diluted (in shares)	79,634	84,389
Net income per share:
Basic (in dollars per share)	$ 2.20	$ 2.25
Diluted (in dollars per share)	$ 2.18	$ 2.22

XML

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 173,905,000	$ 188,482,000
Currency translation gain (loss)	3,232,000	(3,898,000)
Comprehensive income	177,137,000	184,584,000
Less: other comprehensive income attributable to noncontrolling interest	1,051,000	5,000
Less: net income attributable to noncontrolling interest	253,000	1,336,000
Total comprehensive income attributable to ADS	$ 175,833,000	$ 183,243,000

XML

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash Flows from Operating Activities
Net income	$ 173,905,000	$ 188,482,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	37,240,000	35,578,000
Deferred income taxes	573,000	(1,272,000)
(Gain) loss on disposal of assets and costs from exit and disposal activities	(13,304,000)	303,000
Stock-based compensation	6,903,000	6,273,000
Amortization of deferred financing charges	511,000	344,000
Fair market value adjustments to derivatives	(36,000)	(90,000)
Equity in net income of unconsolidated affiliates	(1,675,000)	(1,110,000)
Other operating activities	501,000	(3,535,000)
Changes in working capital:
Receivables	(33,406,000)	(79,616,000)
Inventories	30,860,000	8,039,000
Prepaid expenses and other current assets	(3,699,000)	(4,840,000)
Accounts payable, accrued expenses, and other liabilities	45,594,000	101,209,000
Net cash provided by operating activities	243,967,000	249,765,000
Cash Flows from Investing Activities
Capital expenditures	(42,078,000)	(36,189,000)
Proceeds from Sale of Productive Assets	19,979,000	0
Acquisition, net of cash acquired	0	(47,492,000)
Other investing activities	155,000	13,000
Net cash used in investing activities	(21,944,000)	(83,668,000)
Cash Flows from Financing Activities
Payments on syndicated Term Loan Facility	(1,750,000)	(1,750,000)
Proceeds from Senior Notes due 2030	0	500,000,000
Debt issuance costs	0	(11,575,000)
Payments on Equipment Financing	(2,256,000)	(3,548,000)
Payments on finance lease obligations	(2,769,000)	(1,721,000)
Repurchase of common stock	(47,778,000)	(57,699,000)
Cash dividends paid	(11,084,000)	(10,170,000)
Proceeds from exercise of stock options	867,000	1,249,000
Payment of withholding taxes on vesting of restricted stock units	(8,742,000)	(22,809,000)
Net cash (used in) provided by financing activities	(73,512,000)	277,677,000
Effect of exchange rate changes on cash	465,000	(203,000)
Net change in cash	148,976,000	443,571,000
Cash at beginning of period	217,128,000	20,125,000
Cash at end of period	366,104,000	463,696,000
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for income taxes	1,553,000	5,055,000
Cash paid for interest	8,499,000	4,714,000
Non-cash operating, investing and financing activities:
Repurchase of common stock pending settlement	0	9,662,000
Excise tax accrual, share repurchase	293,000	0
Acquisition of property, plant and equipment under finance lease and incurred lease obligations	944,000	1,754,000
Balance in accounts payable for the acquisition of property, plant and equipment	19,781,000	16,881,000
Revolving Credit Agreement
Cash Flows from Financing Activities
Proceeds from Revolving Credit Agreement	0	26,200,000
Payments on Revolving Credit Agreement	0	(140,500,000)
Amended Revolving Credit Facility
Cash Flows from Financing Activities
Proceeds from Revolving Credit Agreement	0	97,000,000
Payments on Revolving Credit Agreement	$ 0	$ (97,000,000)

XML

Condensed Consolidated Statements of Stockholders' Equity and Mezzanine Equity (Unaudited) - USD ($) shares in Thousands	Total	Total Mezzanine Equity	Total Mezzanine Equity ESOP share conversion	Total Mezzanine Equity KSOP redeemable common stock conversion	Redeemable Common Stock	Redeemable Common Stock ESOP share conversion	Redeemable Common Stock KSOP redeemable common stock conversion	Redeemable Convertible Preferred Stock	Redeemable Convertible Preferred Stock ESOP share conversion	Total ADS Stockholders’ Equity	Common Stock	Paid -In Capital	Common Stock in Treasury	Accumulated Other Compre-hensive Loss	Retained Earnings	Non- controlling Interest in Subsidiaries
Beginning balance, common stock (in shares) at Mar. 31, 2022											75,529
Beginning balance, treasury stock (in shares) at Mar. 31, 2022													3,220
Beginning balance at Mar. 31, 2022	$ 909,661,000									$ 893,039,000	$ 11,612,000	$ 1,065,628,000	$ (318,691,000)	$ (24,386,000)	$ 158,876,000	$ 16,622,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	188,482,000									187,146,000					187,146,000	1,336,000
Other comprehensive (loss) income	(3,898,000)									(3,903,000)				(3,903,000)		5,000
Common stock dividends	(10,200,000)									(10,200,000)					(10,200,000)
Share repurchases (in shares)													772
Share repurchases	(67,361,000)									(67,361,000)			$ (67,361,000)
KSOP redeemable common stock conversion (in shares)											403
KSOP redeemable common stock conversion	6,556,000									6,556,000	$ 4,000	6,552,000
Exercise of common stock options (in shares)											67
Exercise of common stock options	1,249,000									1,249,000	$ 1,000	1,248,000
Restricted stock awards (in shares)											81		24
Restricted stock awards	(2,457,000)									(2,457,000)	$ 1,000		$ (2,458,000)
Performance-based restricted stock units (in shares)											527		205
Performance-based restricted stock units	(20,346,000)									(20,346,000)	$ 5,000		$ (20,351,000)
Stock-based compensation expense	6,273,000									6,273,000		6,273,000
Ending balance, common stock (in shares) at Jun. 30, 2022											76,607
Ending balance, treasury stock (in shares) at Jun. 30, 2022													4,221
Ending balance at Jun. 30, 2022	$ 1,007,959,000									989,996,000	$ 11,623,000	1,079,701,000	$ (408,861,000)	(28,289,000)	335,822,000	17,963,000
Mezzanine equity, beginning balance (in shares) at Mar. 31, 2022					0			15,630
Mezzanine equity, beginning balance at Mar. 31, 2022		$ 195,384,000			$ 0			$ 195,384,000
Increase (Decrease) in Temporary Equity [Roll Forward]
Conversion of convertible securities (in shares)						12,022	(403)		(15,630)
Temporary equity, conversion of convertible securities			$ 0	$ (6,556,000)		$ 195,384,000	$ (6,556,000)		$ (195,384,000)
Mezzanine equity, ending balance (in shares) at Jun. 30, 2022					11,619			0
Mezzanine equity, ending balance at Jun. 30, 2022		188,828,000			$ 188,828,000			$ 0
Increase (Decrease) in Temporary Equity [Roll Forward]
Common stock dividends per share (in dollars per share)	$ 0.12
Beginning balance, common stock (in shares) at Mar. 31, 2023	69,518										79,057
Beginning balance, treasury stock (in shares) at Mar. 31, 2023													9,539
Beginning balance at Mar. 31, 2023	$ 841,640,000									824,147,000	$ 11,647,000	1,134,864,000	$ (920,999,000)	(27,580,000)	626,215,000	17,493,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	173,905,000									173,652,000					173,652,000	253,000
Other comprehensive (loss) income	3,232,000									2,181,000				2,181,000		1,051,000
Common stock dividends	(11,087,000)									(11,087,000)					(11,087,000)
Share repurchases (in shares)													474
Share repurchases	(48,071,000)									(48,071,000)			$ (48,071,000)
KSOP redeemable common stock conversion (in shares)											297
KSOP redeemable common stock conversion	4,823,000									4,823,000	$ 3,000	4,820,000
Exercise of common stock options (in shares)											21
Exercise of common stock options	867,000									867,000	$ 1,000	866,000
Restricted stock awards (in shares)											76		25
Restricted stock awards	(2,345,000)									(2,345,000)	$ 1,000		$ (2,346,000)
Performance-based restricted stock units (in shares)											200		72
Performance-based restricted stock units	(6,394,000)									(6,394,000)	$ 2,000		$ (6,396,000)
Stock-based compensation expense	6,903,000									6,903,000		6,903,000
Other	$ (4,000)									(4,000)		(4,000)
Ending balance, common stock (in shares) at Jun. 30, 2023	69,541										79,651
Ending balance, treasury stock (in shares) at Jun. 30, 2023													10,110
Ending balance at Jun. 30, 2023	$ 963,469,000									$ 944,672,000	$ 11,654,000	$ 1,147,449,000	$ (977,812,000)	$ (25,399,000)	$ 788,780,000	$ 18,797,000
Mezzanine equity, beginning balance (in shares) at Mar. 31, 2023					9,429			0
Mezzanine equity, beginning balance at Mar. 31, 2023	153,220,000	153,220,000			$ 153,220,000			$ 0
Increase (Decrease) in Temporary Equity [Roll Forward]
Conversion of convertible securities (in shares)							(297)
Temporary equity, conversion of convertible securities				$ (4,823,000)			$ (4,823,000)
Mezzanine equity, ending balance (in shares) at Jun. 30, 2023					9,132			0
Mezzanine equity, ending balance at Jun. 30, 2023	$ 148,397,000	$ 148,397,000			$ 148,397,000			$ 0
Increase (Decrease) in Temporary Equity [Roll Forward]
Common stock dividends per share (in dollars per share)	$ 0.14

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Condensed Consolidated Statements of Stockholders' Equity and Mezzanine Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Statement of Stockholders' Equity [Abstract]
Common stock dividends per share	$ 0.14	$ 0.12

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Background and Summary of Significant Accounting Policies

3 Months Ended

Jun. 30, 2023

Accounting Policies [Abstract]

Background and Summary of Significant Accounting Policies

BACKGROUND AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Description of Business - Advanced Drainage Systems, Inc. and subsidiaries (collectively referred to as “ADS” or the “Company”), incorporated in Delaware, designs, manufactures and markets innovative water management solutions in the stormwater and onsite septic wastewater industries, providing superior drainage solutions for use in the construction and agriculture marketplace. ADS’s products are used across a broad range of end markets and applications, including non-residential, infrastructure and agriculture applications.

The Company is managed and reports results of operations in three reportable segments: Pipe, Infiltrator Water Technologies Ultimate Holdings, Inc ("Infiltrator") and International. The Company also reports the results of its Allied Products and all other business segments as Allied Products and Other.

Historically, sales of the Company’s products have been higher in the first and second quarters of each fiscal year due to favorable weather and longer daylight conditions accelerating construction activity during these periods. Seasonal variations in operating results may also be impacted by inclement weather conditions, such as cold or wet weather, which can delay projects.

Basis of Presentation - The Company prepares its Condensed Consolidated Financial Statements in accordance with accounting principles generally accepted in the United States of America (“GAAP”). The Condensed Consolidated Balance Sheet as of March 31, 2023 was derived from audited financial statements included in the Annual Report on Form 10-K for the year ended March 31, 2023 (“Fiscal 2023 Form 10-K”). The accompanying unaudited Condensed Consolidated Financial Statements contain all adjustments, of a normal recurring nature, necessary to present fairly its financial position as of June 30, 2023 and the results of operations for the three months ended June 30, 2023 and cash flows for the three months ended June 30, 2023. The interim Condensed Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements, including the notes thereto, filed in the Company’s Fiscal 2023 Form 10-K.

Principles of Consolidation - The Condensed Consolidated Financial Statements include the Company, its wholly-owned subsidiaries, its majority-owned subsidiaries and variable interest entities (“VIEs”) of which the Company is the primary beneficiary. The Company uses the equity method of accounting for equity investments where it exercises significant influence but does not hold a controlling financial interest. Such investments are recorded in Other assets in the Condensed Consolidated Balance Sheets and the related equity earnings from these investments are included in Equity in net income of unconsolidated affiliates in the Condensed Consolidated Statements of Operations. All intercompany balances and transactions have been eliminated in consolidation.

Recent Accounting Guidance - There have been no new accounting pronouncements issued or adopted since the filing of the Fiscal 2023 Form 10-K that have significance, or potential significance, to the Condensed Consolidated Financial Statements.

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Discontinued Operations and Disposal Groups	3 Months Ended
	Jun. 30, 2023
Discontinued Operations and Disposal Groups [Abstract]
Loss on Disposal of Assets and Costs from Exit and Disposal Activities	GAIN ON DISPOSAL OF ASSETS AND COSTS FROM EXIT AND DISPOSAL ACTIVITIESOn April 14, 2023, the Company completed its divestiture of substantially all of the assets of Spartan Concrete, Inc. to a third party purchaser for consideration of $20.0 million. The Company recognized a gain on the sale of $14.9 million on the Condensed Consolidated Statements of Operations. Prior to the divestiture, the Company recorded the results of operations in Allied & Other.

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Revenue Recognition

3 Months Ended

Jun. 30, 2023

Revenue from Contract with Customer [Abstract]

Revenue Recognition

REVENUE RECOGNITIONRevenue Disaggregation - The Company disaggregates net sales by Domestic, International and Infiltrator and further disaggregates Domestic and International by product type, consistent with its reportable segment disclosure. This disaggregation level best depicts how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. Refer to “Note 12. Business Segments Information” for the Company’s disaggregation of Net sales by reportable segment.

Contract Balances - The Company recognizes a contract asset representing the Company’s right to recover products upon the receipt of returned products and a contract liability for the customer refund. The following table presents the balance of the Company’s contract asset and liability as of the periods presented:

(In thousands)	June 30, 2023		March 31, 2023
Contract asset - product returns	$	1,167	$	933
Refund liability	3,857		2,664

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Leases	3 Months Ended
	Jun. 30, 2023
Leases [Abstract]
Leases	LEASESNature of the Company’s Leases - The Company has operating and finance leases for plants, yards, corporate offices, tractors, trailers and other equipment. The Company’s leases have remaining terms of less than one year to 14 years. A portion of the Company’s yard leases include an option to extend the leases for up to five years. The Company has included renewal options which are reasonably certain to be exercised in its right-of-use assets and lease liabilities.

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Inventories

3 Months Ended

Jun. 30, 2023

Inventory Disclosure [Abstract]

Inventories

INVENTORIES

Inventories as of the periods presented consisted of the following:

(In thousands)	June 30, 2023		March 31, 2023
Raw materials	$	98,665	$	108,206
Finished goods	335,966		355,788
Total inventories	$	434,631	$	463,994

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Net Income Per Share and Stockholders' Equity

3 Months Ended

Jun. 30, 2023

Net Income Per Share And Stockholders Equity [Abstract]

Net Income Per Share and Stockholders' Equity

NET INCOME PER SHARE AND STOCKHOLDERS' EQUITY

Net Income per Share - The following table presents information necessary to calculate net income per share for the periods presented, as well as potentially dilutive securities excluded from the weighted average number of diluted common shares outstanding because their inclusion would have been anti-dilutive:

	Three Months Ended June 30,
(In thousands, except per share data)	2023		2022
NET INCOME PER SHARE—BASIC:
Net income available to common stockholders – Basic	$	173,652	$	187,146
Weighted average number of common shares outstanding – Basic	78,908		83,144
Net income per common share – Basic	$	2.20	$	2.25
NET INCOME PER SHARE—DILUTED:
Net income available to common stockholders – Diluted	$	173,652	$	187,146
Weighted average number of common shares outstanding – Basic	78,908		83,144
Assumed restricted stock	52		147
Assumed exercise of stock options	577		757
Assumed performance units	97		341
Weighted average number of common shares outstanding – Diluted	79,634		84,389
Net income per common share – Diluted	$	2.18	$	2.22
Potentially dilutive securities excluded as anti-dilutive	1		24

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Related Party Transactions

3 Months Ended

Jun. 30, 2023

Related Party Transactions [Abstract]

Related Party Transactions

RELATED PARTY TRANSACTIONS

ADS Mexicana - ADS conducts business in Mexico and Central America through its joint venture ADS Mexicana, S.A. de C.V. (“ADS Mexicana”). ADS owns 51% of the outstanding stock of ADS Mexicana and consolidates ADS Mexicana for financial reporting purposes.

On June 6, 2022, the Company and ADS Mexicana amended the Intercompany Revolving Credit Promissory Note (the “Intercompany Note”) with a borrowing capacity of $9.5 million. The Intercompany Note matures on June 8, 2027. The Intercompany Note indemnifies the ADS Mexicana joint venture partner for 49% of any unpaid borrowings. The interest rates under the Intercompany Note are determined by certain base rates or Secured

Overnight Financing Rate (“SOFR”) plus an applicable margin based on the Leverage Ratio. As of both June 30, 2023 and March 31, 2023, there were no borrowings outstanding under the Intercompany Note.

South American Joint Venture - The Tuberias Tigre - ADS Limitada joint venture (the “South American Joint Venture”) manufactures and sells HDPE corrugated pipe in certain South American markets. ADS owns 50% of the South American Joint Venture. ADS is the guarantor of 50% of the South American Joint Venture’s credit arrangement, and the debt guarantee is shared equally with the joint venture partner. The Company’s maximum potential obligation under this guarantee is $11.0 million as of June 30, 2023. The maximum borrowings permitted under the South American Joint Venture’s credit facility are $22.0 million. The Company does not anticipate any required contributions related to the balance of this credit arrangement. As of June 30, 2023 and March 31, 2023, the outstanding principal balances of the South American Joint Venture’s credit facility including letters of credit were $4.5 million and $5.5 million, respectively. As of June 30, 2023, there were no U.S. dollar denominated loans. The weighted average interest rate as of June 30, 2023 was 11.8% on Chilean peso denominated loans.

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Debt

3 Months Ended

Jun. 30, 2023

Debt Disclosure [Abstract]

Debt

DEBT

Long-term debt as of the periods presented consisted of the following:

(In thousands)	June 30, 2023		March 31, 2023
Term Loan Facility	$	425,500	$	427,250
Senior Notes due 2027	350,000		350,000
Senior Notes due 2030	500,000		500,000
Revolving Credit Facility	—		—
Equipment Financing	16,396		18,638
Total	1,291,896		1,295,888
Less: Unamortized debt issuance costs	11,293		11,804
Less: Current maturities	13,806		14,693
Long-term debt obligations	$	1,266,797	$	1,269,391

Senior Secured Credit Facilities – In May 2022, the Company entered into a Second Amendment (the "Second Amendment") to the Company's Base Credit Agreement with Barclays Bank PLC, as administrative agent under the Term Loan Facility, PNC Bank, National Association, as new administrative agent under the Revolving Credit Facility. Among other things, the Second Amendment (i) amended the Base Credit Agreement by increasing the Revolving Credit Facility (the "Amended Revolving Credit Facility") from $350 million to $600 million (including an increase of the sub-limit for the swing-line sub-facility from $50 million to $60 million), (ii) extended the maturity date of the Revolving Credit Facility to May 26, 2027, (iii) revised the “applicable margin” to provide an additional step-down to 175 basis points (for Term Benchmark based loans) and 75 basis points (for base rate loans) in the event the consolidated senior secured net leverage ratio is less than 2.00 to 1.00, and (iv) reset the “incremental amount” and the investment basket in non-guarantors and joint ventures. The Second Amendment also revised the reference interest rate from LIBOR to SOFR for both the Amended Revolving Credit Facility and the Term Loan Facility. Letters of credit outstanding at June 30, 2023 and March 31, 2023 amounted to $11.2 million and $9.7 million, respectively, and reduced the availability of the Revolving Credit Facility.

Senior Notes due 2027 – On September 23, 2019, the Company issued $350.0 million aggregate principal amount of 5.0% Senior Notes due 2027 (the “2027 Notes”) pursuant to an Indenture, dated September 23, 2019 (the “2027 Indenture”), among the Company, the guarantors party thereto (the “Guarantors”) and U.S. Bank National Association, as Trustee (the “Trustee”).

Senior Notes due 2030 – On June 9, 2022, the Company issued $500.0 million aggregate principal amount of 6.375% Senior Notes due 2030 (the “2030 Notes”) pursuant to an Indenture, dated June 9, 2022 (the "2030 Indenture"), among the Company, the Guarantors and the Trustee.

Equipment Financing – The assets under the Equipment Financing acquired are titled to the Company and included in Property, plant and equipment, net on the Company's Condensed Consolidated Balance Sheet. The equipment financing has an initial term of between 12 and 84 months, based on the life of the equipment, and bears a weighted average interest of 1.6% as of June 30, 2023. The current portion of the equipment financing is $6.8 million, and the long-term portion is $9.6 million at June 30, 2023.

Valuation of Debt - The carrying amounts of current financial assets and liabilities approximate fair value because of the immediate or short-term maturity of these items. The following table presents the carrying and fair value of the Company’s 2027 Notes, 2030 Notes and Equipment Financing for the periods presented:

	June 30, 2023				March 31, 2023
(In thousands)	Fair Value		Carrying Value		Fair Value		Carrying Value
Senior Notes due 2027	$	332,371	$	350,000	$	333,970	$	350,000
Senior Notes due 2030	493,510		500,000		496,605		500,000
Equipment Financing	15,828		16,396		17,921		18,638
Total fair value	$	841,709	$	866,396	$	848,496	$	868,638

The fair values of the 2027 Notes and 2030 Notes were determined based on quoted market data for the Company’s 2027 Notes and 2030 Notes, respectively. The fair value of the Equipment Financing was determined based on a comparison of the interest rate and terms of such borrowings to the rates and terms of similar debt available for the period. The categorization of the framework used to evaluate the 2027 Notes, 2030 Notes and Equipment Financing are considered Level 2. The Company believes the carrying amount on the remaining long-term debt, including the Term Loan Facility and Revolving Credit Facility, is not materially different from its fair value as the interest rates and terms of the borrowings are similar to currently available borrowings.

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Commitments and Contingencies

3 Months Ended

Jun. 30, 2023

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

COMMITMENTS AND CONTINGENCIES

Purchase Commitments - The Company has historically secured supplies of resin raw material by agreeing to purchase quantities during a future given period at a fixed price. These purchase contracts typically ranged from 1 to 12 months and occur in the ordinary course of business. The Company does not have any outstanding purchase commitments with fixed price and quantity as of June 30, 2023. The Company also enters into equipment purchase contracts with manufacturers.

Litigation and Other Proceedings – The Company is involved from time to time in various legal proceedings that arise in the ordinary course of business, including but not limited to commercial disputes, environmental matters, employee related claims, intellectual property disputes and litigation in connection with transactions including acquisitions and divestitures. The Company does not believe that such litigation, claims, and administrative proceedings will have a material adverse impact on the Company’s financial position or results of operations. The Company records a liability when a loss is considered probable, and the amount can be reasonably estimated.

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Income Taxes	3 Months Ended
	Jun. 30, 2023
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXESThe Company’s effective tax rate will vary based on a variety of factors, including overall profitability, the geographical mix of income before taxes and related tax rates in jurisdictions where it operates and other one-time charges, as well as the occurrence of discrete events. For the three months ended June 30, 2023 and 2022, the Company utilized an effective tax rate of 24.2% and 22.7%, respectively, to calculate its provision for income taxes. State and local income taxes increased the effective rate for the three months ended June 30, 2023 and 2022. Additionally, the discrete income tax benefit related to the stock-based compensation windfall decreased the effective tax rate for the three months ended June 30, 2022.

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Stock-Based Compensation

3 Months Ended

Jun. 30, 2023

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation

STOCK-BASED COMPENSATION

ADS has several programs for stock-based payments to employees and non-employee members of its Board of Directors, including stock options, performance-based restricted stock units and restricted stock. The Company recognized stock-based compensation expense in the following line items of the Condensed Consolidated Statements of Operations for the periods presented:

	Three Months Ended June 30,
(In thousands)	2023		2022
Component of income before income taxes:
Cost of goods sold	$	813	$	674
Selling, general and administrative expenses	6,090		5,599
Total stock-based compensation expense	$	6,903	$	6,273

The following table summarizes stock-based compensation expense by award type for the periods presented:

	Three Months Ended June 30,
(In thousands)	2023		2022
Stock-based compensation expense:
Stock Options	$	1,434	$	1,279
Restricted Stock	2,027		1,761
Performance-based Restricted Stock Units	2,884		2,740
Non-Employee Directors	558		493
Total stock-based compensation expense	$	6,903	$	6,273

2017 Omnibus Incentive Plan - The 2017 Incentive Plan provides for the issuance of a maximum of 5.0 million shares of the Company’s common stock for awards made thereunder, which awards may consist of stock options, restricted stock, restricted stock units, stock appreciation rights, phantom stock, cash-based awards, performance awards (which may take the form of performance cash, performance units or performance shares) or other stock-based awards.

Restricted Stock – During the three months ended June 30, 2023, the Company granted 0.1 million shares of restricted stock with a grant date fair value of $11.0 million.

Performance-based Restricted Stock Units ("Performance Units") – During the three months ended June 30, 2023, the Company granted 0.1 million performance share units at a grant date fair value of $8.7 million.

Options – During the three months ended June 30, 2023, the Company granted 0.2 million nonqualified stock options under the 2017 Incentive Plan with a grant date fair value of $7.4 million. The Company estimates the fair value of stock options using a Black-Scholes option-pricing model. The following table summarizes the assumptions used to estimate the fair value of stock-options during the period presented:

	Three Months Ended June 30, 2023
Common stock price	$96.51
Expected stock price volatility	45.6%
Risk-free interest rate	3.8%
Weighted-average expected option life (years)	6
Dividend yield	0.58%

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Business Segments Information

3 Months Ended

Jun. 30, 2023

Segment Reporting [Abstract]

Business Segments Information

BUSINESS SEGMENTS INFORMATIONThe Company operates its business in three distinct reportable segments: “Pipe”, “International” and “Infiltrator.” “Allied Products & Other” represents the Company’s Allied Products and all other business segments. The Chief Operating Decision Maker (the “CODM”) evaluates segment reporting based on Net Sales and Segment Adjusted Gross Profit. The Company calculated Segment Adjusted Gross Profit as Net sales less Costs of goods sold, depreciation and amortization, stock-based compensation and non-cash charges. A measure of assets is not applicable, as segment assets are not regularly reviewed by the CODM for evaluating performance or allocating resources.

The following table sets forth reportable segment information with respect to the amount of Net sales contributed by each class of similar products for the periods presented:

	Three Months Ended
	June 30, 2023						June 30, 2022
(In thousands)	Net Sales		Intersegment Net Sales		Net Sales from External Customers		Net Sales		Intersegment Net Sales		Net Sales from External Customers
Pipe	$	428,572	$	(8,144)	$	420,428	$	524,857	$	(9,874)	$	514,983
Infiltrator	141,486		(18,578)		122,908		166,290		(28,906)		137,384
International
International - Pipe	37,178		(528)		36,650		53,419		(5,859)		47,560
International - Allied Products & Other	15,598		—		15,598		18,095		—		18,095
Total International	52,776		(528)		52,248		71,514		(5,859)		65,655
Allied Products & Other	183,445		(983)		182,462		198,909		(2,745)		196,164
Intersegment Eliminations	(28,233)		28,233		—		(47,384)		47,384		—
Total Consolidated	$	778,046	$	—	$	778,046	$	914,186	$	—	$	914,186

The following sets forth certain financial information attributable to the reportable segments for the periods presented:

	Three Months Ended June 30,
(In thousands)	2023		2022
Segment Adjusted Gross Profit
Pipe	$	160,649	$	168,579
Infiltrator	74,264		75,794
International	16,029		20,484
Allied Products & Other	106,185		109,041
Intersegment Eliminations	(2,055)		(815)
Total	$	355,072	$	373,083
Depreciation and Amortization
Pipe	$	14,728	$	12,865
Infiltrator	5,358		4,867
International	1,238		1,371
Allied Products & Other(a)	15,916		16,475
Total	$	37,240	$	35,578
Capital Expenditures
Pipe	$	29,604	$	20,274
Infiltrator	5,454		12,532
International	1,149		913
Allied Products & Other(a)	5,871		2,470
Total	$	42,078	$	36,189

(a)Includes depreciation, amortization and capital expenditures not allocated to a reportable segment. The amortization expense of Infiltrator intangible assets is included in Allied Products & Other.

	Three Months Ended June 30,
(In thousands)	2023		2022
Reconciliation of Segment Adjusted Gross Profit:
Total Gross Profit	$	331,460	$	352,107
Depreciation and Amortization	22,799		20,302
Stock-based compensation expense	813		674
Total Segment Adjusted Gross Profit	$	355,072	$	373,083

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Subsequent Events	3 Months Ended
	Jun. 30, 2023
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTSCommon Stock Dividend - During the second quarter of fiscal 2024, the Company declared a quarterly cash dividend of $0.14 per share of common stock. The dividend is payable on September 15, 2023 to stockholders of record at the close of business on September 1, 2023.

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Background and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Jun. 30, 2023
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation - The Company prepares its Condensed Consolidated Financial Statements in accordance with accounting principles generally accepted in the United States of America (“GAAP”). The Condensed Consolidated Balance Sheet as of March 31, 2023 was derived from audited financial statements included in the Annual Report on Form 10-K for the year ended March 31, 2023 (“Fiscal 2023 Form 10-K”). The accompanying unaudited Condensed Consolidated Financial Statements contain all adjustments, of a normal recurring nature, necessary to present fairly its financial position as of June 30, 2023 and the results of operations for the three months ended June 30, 2023 and cash flows for the three months ended June 30, 2023. The interim Condensed Consolidated Financial Statements should be read in conjunction with the audited Consolidated Financial Statements, including the notes thereto, filed in the Company’s Fiscal 2023 Form 10-K.
Principles of Consolidation	Principles of Consolidation - The Condensed Consolidated Financial Statements include the Company, its wholly-owned subsidiaries, its majority-owned subsidiaries and variable interest entities (“VIEs”) of which the Company is the primary beneficiary. The Company uses the equity method of accounting for equity investments where it exercises significant influence but does not hold a controlling financial interest. Such investments are recorded in Other assets in the Condensed Consolidated Balance Sheets and the related equity earnings from these investments are included in Equity in net income of unconsolidated affiliates in the Condensed Consolidated Statements of Operations. All intercompany balances and transactions have been eliminated in consolidation.
Recent Accounting Guidance	Recent Accounting Guidance - There have been no new accounting pronouncements issued or adopted since the filing of the Fiscal 2023 Form 10-K that have significance, or potential significance, to the Condensed Consolidated Financial Statements.
Leases	Nature of the Company’s Leases - The Company has operating and finance leases for plants, yards, corporate offices, tractors, trailers and other equipment. The Company’s leases have remaining terms of less than one year to 14 years. A portion of the Company’s yard leases include an option to extend the leases for up to five years. The Company has included renewal options which are reasonably certain to be exercised in its right-of-use assets and lease liabilities.

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Revenue Recognition (Tables)

3 Months Ended

Jun. 30, 2023

Revenue from Contract with Customer [Abstract]

Schedule of Contract Asset and Liability

The following table presents the balance of the Company’s contract asset and liability as of the periods presented:

(In thousands)	June 30, 2023		March 31, 2023
Contract asset - product returns	$	1,167	$	933
Refund liability	3,857		2,664

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Inventories (Tables)

3 Months Ended

Jun. 30, 2023

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories as of the periods presented consisted of the following:

(In thousands)	June 30, 2023		March 31, 2023
Raw materials	$	98,665	$	108,206
Finished goods	335,966		355,788
Total inventories	$	434,631	$	463,994

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Net Income Per Share and Stockholders' Equity (Tables)

3 Months Ended

Jun. 30, 2023

Net Income Per Share And Stockholders Equity [Abstract]

Summary of Net Income Per Share

The following table presents information necessary to calculate net income per share for the periods presented, as well as potentially dilutive securities excluded from the weighted average number of diluted common shares outstanding because their inclusion would have been anti-dilutive:

	Three Months Ended June 30,
(In thousands, except per share data)	2023		2022
NET INCOME PER SHARE—BASIC:
Net income available to common stockholders – Basic	$	173,652	$	187,146
Weighted average number of common shares outstanding – Basic	78,908		83,144
Net income per common share – Basic	$	2.20	$	2.25
NET INCOME PER SHARE—DILUTED:
Net income available to common stockholders – Diluted	$	173,652	$	187,146
Weighted average number of common shares outstanding – Basic	78,908		83,144
Assumed restricted stock	52		147
Assumed exercise of stock options	577		757
Assumed performance units	97		341
Weighted average number of common shares outstanding – Diluted	79,634		84,389
Net income per common share – Diluted	$	2.18	$	2.22
Potentially dilutive securities excluded as anti-dilutive	1		24

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Debt (Tables)

3 Months Ended

Jun. 30, 2023

Debt Disclosure [Abstract]

Long-Term Debt

Long-term debt as of the periods presented consisted of the following:

(In thousands)	June 30, 2023		March 31, 2023
Term Loan Facility	$	425,500	$	427,250
Senior Notes due 2027	350,000		350,000
Senior Notes due 2030	500,000		500,000
Revolving Credit Facility	—		—
Equipment Financing	16,396		18,638
Total	1,291,896		1,295,888
Less: Unamortized debt issuance costs	11,293		11,804
Less: Current maturities	13,806		14,693
Long-term debt obligations	$	1,266,797	$	1,269,391

Summary of Carrying And Fair Value of Senior Notes

The following table presents the carrying and fair value of the Company’s 2027 Notes, 2030 Notes and Equipment Financing for the periods presented:

	June 30, 2023				March 31, 2023
(In thousands)	Fair Value		Carrying Value		Fair Value		Carrying Value
Senior Notes due 2027	$	332,371	$	350,000	$	333,970	$	350,000
Senior Notes due 2030	493,510		500,000		496,605		500,000
Equipment Financing	15,828		16,396		17,921		18,638
Total fair value	$	841,709	$	866,396	$	848,496	$	868,638

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Stock-Based Compensation (Tables)

3 Months Ended

Jun. 30, 2023

Share-Based Payment Arrangement [Abstract]

Summary of Stock-based Compensation Expense

The Company recognized stock-based compensation expense in the following line items of the Condensed Consolidated Statements of Operations for the periods presented:

	Three Months Ended June 30,
(In thousands)	2023		2022
Component of income before income taxes:
Cost of goods sold	$	813	$	674
Selling, general and administrative expenses	6,090		5,599
Total stock-based compensation expense	$	6,903	$	6,273

The following table summarizes stock-based compensation expense by award type for the periods presented:

	Three Months Ended June 30,
(In thousands)	2023		2022
Stock-based compensation expense:
Stock Options	$	1,434	$	1,279
Restricted Stock	2,027		1,761
Performance-based Restricted Stock Units	2,884		2,740
Non-Employee Directors	558		493
Total stock-based compensation expense	$	6,903	$	6,273

Summary of Assumption Used to Estimate Fair Value of Stock Options

The following table summarizes the assumptions used to estimate the fair value of stock-options during the period presented:

	Three Months Ended June 30, 2023
Common stock price	$96.51
Expected stock price volatility	45.6%
Risk-free interest rate	3.8%
Weighted-average expected option life (years)	6
Dividend yield	0.58%

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Business Segments Information (Tables)

3 Months Ended

Jun. 30, 2023

Segment Reporting [Abstract]

Schedule of Revenue from Reportable Segments by Product Type

The following table sets forth reportable segment information with respect to the amount of Net sales contributed by each class of similar products for the periods presented:

	Three Months Ended
	June 30, 2023						June 30, 2022
(In thousands)	Net Sales		Intersegment Net Sales		Net Sales from External Customers		Net Sales		Intersegment Net Sales		Net Sales from External Customers
Pipe	$	428,572	$	(8,144)	$	420,428	$	524,857	$	(9,874)	$	514,983
Infiltrator	141,486		(18,578)		122,908		166,290		(28,906)		137,384
International
International - Pipe	37,178		(528)		36,650		53,419		(5,859)		47,560
International - Allied Products & Other	15,598		—		15,598		18,095		—		18,095
Total International	52,776		(528)		52,248		71,514		(5,859)		65,655
Allied Products & Other	183,445		(983)		182,462		198,909		(2,745)		196,164
Intersegment Eliminations	(28,233)		28,233		—		(47,384)		47,384		—
Total Consolidated	$	778,046	$	—	$	778,046	$	914,186	$	—	$	914,186

Schedule of Financial Information Attributable to Reportable Segments

The following sets forth certain financial information attributable to the reportable segments for the periods presented:

	Three Months Ended June 30,
(In thousands)	2023		2022
Segment Adjusted Gross Profit
Pipe	$	160,649	$	168,579
Infiltrator	74,264		75,794
International	16,029		20,484
Allied Products & Other	106,185		109,041
Intersegment Eliminations	(2,055)		(815)
Total	$	355,072	$	373,083
Depreciation and Amortization
Pipe	$	14,728	$	12,865
Infiltrator	5,358		4,867
International	1,238		1,371
Allied Products & Other(a)	15,916		16,475
Total	$	37,240	$	35,578
Capital Expenditures
Pipe	$	29,604	$	20,274
Infiltrator	5,454		12,532
International	1,149		913
Allied Products & Other(a)	5,871		2,470
Total	$	42,078	$	36,189

(a)Includes depreciation, amortization and capital expenditures not allocated to a reportable segment. The amortization expense of Infiltrator intangible assets is included in Allied Products & Other.

Reconciliation of Gross Profit to Segment Adjusted Gross Profit

	Three Months Ended June 30,
(In thousands)	2023		2022
Reconciliation of Segment Adjusted Gross Profit:
Total Gross Profit	$	331,460	$	352,107
Depreciation and Amortization	22,799		20,302
Stock-based compensation expense	813		674
Total Segment Adjusted Gross Profit	$	355,072	$	373,083

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Background and Summary of Significant Accounting Policies (Detail)	3 Months Ended
	Jun. 30, 2023 segment
Accounting Policies [Abstract]
Number of reportable segments	3

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Discontinued Operations and Disposal Groups (Details) - USD ($)		3 Months Ended
	Apr. 14, 2023	Jun. 30, 2023	Jun. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Sale of Productive Assets		$ 19,979,000	$ 0
Spartan Concrete, Inc.
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on Disposition of Other Assets	$ 14,900,000
Proceeds from Sale of Productive Assets	$ 20,000,000

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Revenue Recognition - Schedule of Contract Asset and Liability (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023
Revenue from Contract with Customer [Abstract]
Contract asset - product returns	$ 1,167	$ 933
Refund liability	$ 3,857	$ 2,664

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Leases (Detail)	3 Months Ended
	Jun. 30, 2023
Minimum
Lessee Lease Description [Line Items]
Remaining lease term	1 year
Maximum
Lessee Lease Description [Line Items]
Remaining lease term	14 years
Maximum | Yard
Lessee Lease Description [Line Items]
Lease renewal term	5 years

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Inventories - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023
Inventory Disclosure [Abstract]
Raw materials	$ 98,665	$ 108,206
Finished goods	335,966	355,788
Total inventories	$ 434,631	$ 463,994

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Net Income Per Share and Stockholders' Equity - Summary of Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
NET INCOME PER SHARE—BASIC:
Net income available to common stockholders – Basic	$ 173,652	$ 187,146
Weighted average number of common shares outstanding – Basic (in shares)	78,908	83,144
Net income per common share - Basic (in dollars per share)	$ 2.20	$ 2.25
NET INCOME PER SHARE—DILUTED:
Net income available to common stockholders – Diluted	$ 173,652	$ 187,146
Weighted average number of common shares outstanding – Basic (in shares)	78,908	83,144
Weighted average number of common shares outstanding – Diluted (in shares)	79,634	84,389
Net income per common share - Diluted (in dollars per share)	$ 2.18	$ 2.22
Potentially dilutive securities excluded as anti-dilutive (in shares)	1	24
Assumed restricted stock
NET INCOME PER SHARE—DILUTED:
Dilutive securities (in shares)	52	147
Assumed exercise of stock options
NET INCOME PER SHARE—DILUTED:
Dilutive securities (in shares)	577	757
Assumed performance units
NET INCOME PER SHARE—DILUTED:
Dilutive securities (in shares)	97	341

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Related Party Transactions (Detail) - USD ($)	3 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 06, 2022
South American Joint Venture
Related Party Transaction [Line Items]
Maximum borrowings permitted under credit facility	$ 22,000,000
Company's ownership percentage	50.00%
Percentage of debt guarantee	50.00%
Maximum potential payment under guarantee	$ 11,000,000
Outstanding principal balance including letters of credit	4,500,000	$ 5,500,000
South American Joint Venture | US Dollar Denominated Loans
Related Party Transaction [Line Items]
Outstanding principal balance including letters of credit	$ 0
South American Joint Venture | Chilean Peso Denominated Loans
Related Party Transaction [Line Items]
Weighted average interest rate	11.80%
Consolidated Entity, Excluding Consolidated VIE
Related Party Transaction [Line Items]
Maximum borrowings permitted under credit facility			$ 9,500,000
Maximum borrowings permitted under credit facility	$ 0
Consolidated Entity, Excluding Consolidated VIE | ADS Mexicana
Related Party Transaction [Line Items]
Company's ownership percentage	51.00%
Percentage of ownership in joint venture			49.00%

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Debt - Long-Term Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023
Debt Instrument [Line Items]
Long-term debt , gross	$ 1,291,896	$ 1,295,888
Less: Unamortized debt issuance costs	11,293	11,804
Less: Current maturities	13,806	14,693
Long-term debt obligations	1,266,797	1,269,391
Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt , gross	0	0
Term Loan Facility
Debt Instrument [Line Items]
Long-term debt , gross	425,500	427,250
Senior Notes | Senior Notes due 2027
Debt Instrument [Line Items]
Long-term debt , gross	350,000	350,000
Senior Notes | Senior Notes due 2030
Debt Instrument [Line Items]
Long-term debt , gross	500,000	500,000
Equipment Financing
Debt Instrument [Line Items]
Long-term debt , gross	16,396	$ 18,638
Less: Current maturities	6,800
Long-term debt obligations	$ 9,600

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Debt - Senior Secured Credit Facility (Detail) $ in Millions	1 Months Ended
	May 31, 2022 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Sep. 30, 2019 USD ($)
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowings permitted under credit facility	$ 600.0			$ 350.0
Leverage ratio, maximum for variable rate step-down	2.00
Outstanding letters of credit		$ 11.2	$ 9.7
Revolving Credit Facility | Term Benchmark Based Loans Rate
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%
Revolving Credit Facility | Base Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.75%
Sublimit of Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowings permitted under credit facility	$ 60.0			$ 50.0

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Debt - Senior Notes (Detail) - USD ($) $ in Millions	Jun. 09, 2022	Sep. 23, 2019
Senior Notes due 2027
Debt Instrument [Line Items]
Aggregate principal amount		$ 350.0
Debt instrument, interest rate		5.00%
Senior Notes due 2030
Debt Instrument [Line Items]
Aggregate principal amount	$ 500.0
Debt instrument, interest rate	6.375%

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Debt - Equipment Financing (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2023	Mar. 31, 2023
Debt Instrument [Line Items]
Current maturities of debt obligations	$ 13,806	$ 14,693
Long-term debt obligations	$ 1,266,797	$ 1,269,391
Equipment Financing
Debt Instrument [Line Items]
Weighted average interest rate of equipment financing	1.60%
Current maturities of debt obligations	$ 6,800
Long-term debt obligations	$ 9,600
Minimum | Equipment Financing
Debt Instrument [Line Items]
Equipment financing term	12 months
Maximum | Equipment Financing
Debt Instrument [Line Items]
Equipment financing term	84 months

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Debt - Valuation of Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023
Fair Value
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	$ 841,709	$ 848,496
Fair Value | Equipment Financing
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	15,828	17,921
Carrying Value
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	866,396	868,638
Carrying Value | Equipment Financing
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	16,396	18,638
Senior Notes due 2027 | Fair Value | Senior Notes
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	332,371	333,970
Senior Notes due 2027 | Carrying Value | Senior Notes
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	350,000	350,000
Senior Notes due 2030 | Fair Value | Senior Notes
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	493,510	496,605
Senior Notes due 2030 | Carrying Value | Senior Notes
Debt Instrument [Line Items]
Fair value of senior notes and equipment financing	$ 500,000	$ 500,000

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Commitments and Contingencies (Detail) - Inventory	3 Months Ended
	Jun. 30, 2023 USD ($)
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Total purchase commitment	$ 0
Minimum
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Purchase commitment contract period	1 month
Maximum
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Purchase commitment contract period	12 months

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Income Taxes (Detail)	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Income Tax Disclosure [Abstract]
Effective income tax rate	24.20%	22.70%

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Stock-Based Compensation - Summary of Stock-based Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	$ 6,903	$ 6,273
Non-Employee Directors
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	558	493
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	1,434	1,279
Assumed performance units
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	2,027	1,761
Performance-based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	2,884	2,740
Cost of goods sold
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	813	674
Selling, general and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Additional stock-based compensation expense	$ 6,090	$ 5,599

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Stock-Based Compensation (2017 Omnibus Plan) - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	May 24, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock awards	$ (2,345)	$ (2,457)
2017 Omnibus Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock awards (in shares)	100,000
Restricted stock awards	$ 11,000
2017 Omnibus Plan | Performance-based Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of performance units granted (in shares)	100,000
Number of performance units granted, value	$ 8,700
2017 Omnibus Plan | Assumed exercise of stock options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of stock options granted (in shares)	200,000
Number of stock options granted, value	$ 7,400
2017 Omnibus Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock approved for issuance (in shares)			5,000,000

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Stock-Based Compensation - Summary of Assumption Used to Estimate Fair Value of Stock Options (Detail)	3 Months Ended
	Jun. 30, 2023 $ / shares
Share-Based Payment Arrangement [Abstract]
Common stock price (in dollars per share)	$ 96.51
Expected stock price volatility	45.60%
Risk-free interest rate	3.80%
Weighted-average expected option life (years)	6 years
Dividend yield	0.58%

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Business Segments Information - Additional Information (Detail)	3 Months Ended
	Jun. 30, 2023 segment
Segment Reporting [Abstract]
Number of reportable segments	3

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Business Segments Information - Schedule of Revenue from Reportable Segments by Product Type (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Net Sales	$ 778,046	$ 914,186
Operating Segments
Segment Reporting Information [Line Items]
Net Sales	(28,233)	(47,384)
Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	28,233	47,384
Pipe
Segment Reporting Information [Line Items]
Net Sales	420,428	514,983
Pipe | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	428,572	524,857
Pipe | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	(8,144)	(9,874)
Infiltrator
Segment Reporting Information [Line Items]
Net Sales	122,908	137,384
Infiltrator | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	141,486	166,290
Infiltrator | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	(18,578)	(28,906)
International
Segment Reporting Information [Line Items]
Net Sales	52,248	65,655
International | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	52,776	71,514
International | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	(528)	(5,859)
International | International - Pipe
Segment Reporting Information [Line Items]
Net Sales	36,650	47,560
International | International - Pipe | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	37,178	53,419
International | International - Pipe | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	(528)	(5,859)
International | International - Allied Products & Other
Segment Reporting Information [Line Items]
Net Sales	15,598	18,095
International | International - Allied Products & Other | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	15,598	18,095
Allied Products & Other
Segment Reporting Information [Line Items]
Net Sales	182,462	196,164
Allied Products & Other | Operating Segments
Segment Reporting Information [Line Items]
Net Sales	183,445	198,909
Allied Products & Other | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net Sales	$ (983)	$ (2,745)

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Business Segments Information - Schedule of Financial Information Attributable to Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Segment Adjusted Gross Profit	$ 355,072	$ 373,083
Depreciation and Amortization	37,240	35,578
Capital Expenditures	42,078	36,189
Operating Segments | Pipe
Segment Reporting Information [Line Items]
Segment Adjusted Gross Profit	160,649	168,579
Depreciation and Amortization	14,728	12,865
Capital Expenditures	29,604	20,274
Operating Segments | Infiltrator
Segment Reporting Information [Line Items]
Segment Adjusted Gross Profit	74,264	75,794
Depreciation and Amortization	5,358	4,867
Capital Expenditures	5,454	12,532
Operating Segments | International
Segment Reporting Information [Line Items]
Segment Adjusted Gross Profit	16,029	20,484
Depreciation and Amortization	1,238	1,371
Capital Expenditures	1,149	913
Operating Segments | Allied Products & Other
Segment Reporting Information [Line Items]
Segment Adjusted Gross Profit	106,185	109,041
Depreciation and Amortization	15,916	16,475
Capital Expenditures	5,871	2,470
Intersegment Eliminations
Segment Reporting Information [Line Items]
Segment Adjusted Gross Profit	$ (2,055)	$ (815)

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Business Segments Information - Reconciliation of Gross Profit to Segment Adjusted Gross Profit (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Gross profit	$ 331,460	$ 352,107
Total Segment Adjusted Gross Profit	355,072	373,083
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Depreciation and Amortization	22,799	20,302
Stock-based compensation expense	$ 813	$ 674

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Subsequent Events (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended
	Aug. 03, 2023	Jun. 30, 2023	Jun. 30, 2022
Subsequent Event [Line Items]
Common stock dividends per share (in dollars per share)		$ 0.14	$ 0.12
Stock repurchased during period		$ 48,071	$ 67,361
Subsequent Event
Subsequent Event [Line Items]
Common stock dividends per share (in dollars per share)	$ 0.14