Advanced Drainage Systems (WMS) 10-Q 20 Jan 17 2017 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Sep. 30, 2016	Dec. 31, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Trading Symbol	WMS
Entity Registrant Name	ADVANCED DRAINAGE SYSTEMS, INC.
Entity Central Index Key	1,604,028
Current Fiscal Year End Date	--03-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		55,113,227

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Mar. 31, 2016
Current assets:
Cash	$ 8,804	$ 6,555
Receivables (less allowance for doubtful accounts of $10,008 and $7,956, respectively)	215,294	186,883
Inventories	223,226	230,466
Deferred income taxes and other current assets	7,573	15,658
Total current assets	454,897	439,562
Property, plant and equipment, net	397,409	391,744
Other assets:
Goodwill	100,696	100,885
Intangible assets, net	55,682	59,869
Other assets	46,195	45,256
Total assets	1,054,879	1,037,316
Current liabilities:
Current maturities of debt obligations	36,497	35,870
Current maturities of capital lease obligations	20,640	19,231
Accounts payable	95,437	119,606
Current portion of liability-classified stock-based awards	14,344	10,118
Other accrued liabilities	59,582	65,099
Accrued income taxes	13,126	2,260
Total current liabilities	239,626	252,184
Long-term debt obligation (less unamortized debt issuance costs of $2,429 and $3,131, respectively)	312,712	312,214
Long-term capital lease obligations	59,170	56,809
Deferred tax liabilities	54,602	63,952
Other liabilities	32,147	37,921
Total liabilities	698,257	723,080
Commitments and contingencies (see Note 7)
Mezzanine equity:
Redeemable convertible preferred stock: $0.01 par value; 47,070 shares authorized; 44,170 shares issued; 24,429 and 24,819 shares outstanding, respectively	305,361	310,240
Deferred compensation - unearned ESOP shares	(202,008)	(205,664)
Redeemable noncontrolling interest in subsidiaries	8,415	7,171
Total mezzanine equity	111,768	111,747
Stockholders' equity:
Common stock; $0.01 par value: 1,000,000 shares authorized; 153,560 shares issued; 55,020 and 54,437 shares outstanding, respectively	12,393	12,393
Paid-in capital	748,177	739,097
Common stock in treasury, at cost	(438,404)	(440,995)
Accumulated other comprehensive loss	(24,362)	(21,261)
Retained deficit	(67,109)	(101,778)
Total ADS stockholders' equity	230,695	187,456
Noncontrolling interest in subsidiaries	14,159	15,033
Total stockholders' equity	244,854	202,489
Total liabilities, mezzanine equity and stockholders' equity	$ 1,054,879	$ 1,037,316

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2016	Mar. 31, 2016
Allowance for doubtful accounts	$ 10,008	$ 7,956
Unamortized debt issuance costs	$ 2,429	$ 3,131
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	1,000,000,000	1,000,000,000
Common stock, shares issued	153,560,000	153,560,000
Common stock, shares outstanding	55,020,000	54,437,000
Redeemable Convertible Preferred Stock [Member]
Mezzanine equity, par value	$ 0.01	$ 0.01
Mezzanine equity, shares authorized	47,070,000	47,070,000
Mezzanine equity, shares issued	44,170,000	44,170,000
Mezzanine equity, shares outstanding	24,429,000	24,819,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Net sales	$ 360,785	$ 383,329	$ 718,361	$ 732,453
Cost of goods sold	270,273	296,800	531,243	571,447
Gross profit	90,512	86,529	187,118	161,006
Operating expenses:
Selling	23,210	22,594	47,440	43,821
General and administrative	21,181	25,673	55,710	44,358
Loss on disposal of assets or businesses	737	295	939	1,161
Intangible amortization	2,128	2,341	4,315	4,867
Income from operations	43,256	35,626	78,714	66,799
Other expense:
Interest expense	4,546	4,947	9,330	9,233
Derivative (gains) losses and other (income) expense, net	(1,734)	9,192	(4,771)	15,772
Income before income taxes	40,444	21,487	74,155	41,794
Income tax expense	15,348	5,187	29,542	13,066
Equity in net loss of unconsolidated affiliates	815	372	911	18
Net income	24,281	15,928	43,702	28,710
Less net income attributable to noncontrolling interest	547	3,582	1,695	4,670
Net income attributable to ADS	23,734	12,346	42,007	24,040
Accretion of Redeemable noncontrolling interest	(380)	(257)	(742)	(257)
Dividends to Redeemable convertible preferred stockholders	(415)	(362)	(840)	(733)
Dividends paid to unvested restricted stockholders	(24)	(6)	(54)	(12)
Net income available to common stockholders and participating securities	22,915	11,721	40,371	23,038
Undistributed income allocated to participating securities	(2,040)	(980)	(3,563)	(1,949)
Net income available to common stockholders	$ 20,875	$ 10,741	$ 36,808	$ 21,089
Weighted average common shares outstanding:
Basic	54,429	53,882	54,250	53,753
Diluted	55,276	55,194	55,115	55,093
Net income per share:
Basic	$ 0.38	$ 0.20	$ 0.68	$ 0.39
Diluted	0.38	0.19	0.67	0.38
Cash dividends declared per share	$ 0.06	$ 0.05	$ 0.12	$ 0.10

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 24,281	$ 15,928	$ 43,702	$ 28,710
Currency translation	(2,047)	(10,979)	(5,168)	(10,470)
Comprehensive income	22,234	4,949	38,534	18,240
Less other comprehensive loss attributable to noncontrolling interest, net of tax	(566)	(1,726)	(2,067)	(2,308)
Less net income attributable to noncontrolling interest	547	3,582	1,695	4,670
Total comprehensive income attributable to ADS	$ 22,253	$ 3,093	$ 38,906	$ 15,878

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Statement of Cash Flows [Abstract]
Cash Flows from Operating Activities	$ 45,576	$ 16,924
Cash Flows from Investing Activities
Capital expenditures	(23,796)	(21,534)
Cash paid for acquisitions, net of cash acquired		(3,188)
Proceeds of note receivable to related party		3,854
Issuance of note receivable to related party		(3,854)
Other investing activities	(622)	(378)
Net cash used in investing activities	(24,418)	(25,100)
Cash Flows from Financing Activities
Proceeds from Revolving Credit Facility	235,600	252,800
Payments on Revolving Credit Facility	(207,900)	(223,000)
Payments on Term Loan	(5,000)	(3,750)
Payments on Senior Notes	(25,000)
Proceeds from notes, mortgages and other debt		6,682
Payments of notes, mortgages and other debt	(430)	(7,092)
Payments on capital lease obligations	(10,810)	(10,247)
Cash dividends paid	(7,338)	(8,173)
Proceeds from exercise of stock options	2,687	823
Other financing activities	(620)	(369)
Net cash (used in) provided by financing activities	(18,811)	7,674
Effect of exchange rate changes on cash	(98)	360
Net change in cash	2,249	(142)
Cash at beginning of period	6,555	3,623
Cash at end of period	8,804	3,481
SUPPLEMENTAL CASH FLOW INFORMATION
Cash paid for income taxes	3,125	16,756
Cash paid for interest	9,409	8,702
Non-cash operating, investing and financing activities:
Acquisition of property, plant and equipment under capital lease and incurred lease obligations	14,915	25,598
Balance in accounts payable for the acquisition of property, plant and equipment	1,165	$ 195
Acquisition of property, plant and equipment under financing facility	$ 3,153

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Paid-In Capital [Member]	Common Stock in Treasury [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings (Deficit) [Member]	Total ADS Stockholders' Equity [Member]	Non-controlling Interest in Subsidiaries [Member]
Beginning Balance, Value at Mar. 31, 2015	$ 177,125	$ 12,393	$ 723,495	$ (445,065)	$ (15,521)	$ (114,590)	$ 160,712	$ 16,413
Net income	28,599					24,040	24,040	4,559
Other comprehensive loss	(10,470)				(8,162)		(8,162)	(2,308)
Redeemable convertible preferred stock dividends	(657)					(657)	(657)
Common stock dividends	(5,386)					(5,386)	(5,386)
Dividend paid to noncontrolling interest holder	(2,130)							(2,130)
Allocation of ESOP shares to participants for compensation	2,707		2,707				2,707
Exercise of common stock options	2,427		2,037	390			2,427
Restricted stock awards	500		209	291			500
ESOP distribution in common stock	7,188		5,222	1,966			7,188
Acquisition of Redeemable noncontrolling interest	0	0	0	0	0	0	0	0
Accretion of Redeemable noncontrolling interest	(159)		(159)				(159)
Ending Balance, Value at Sep. 30, 2015	199,744	$ 12,393	733,511	$ (442,418)	(23,683)	(96,593)	183,210	16,534
Beginning Balance, Shares at Mar. 31, 2015		153,560		100,038
Exercise of common stock options, Shares				(77)
Restricted stock awards, Shares				(66)
ESOP distribution in common stock, Shares				(442)
Ending Balance, Shares at Sep. 30, 2015		153,560		99,453
Beginning Balance, Value at Mar. 31, 2016	202,489	$ 12,393	739,097	$ (440,995)	(21,261)	(101,778)	187,456	15,033
Net income	43,200					42,007	42,007	1,193
Other comprehensive loss	(5,168)				(3,101)		(3,101)	(2,067)
Redeemable convertible preferred stock dividends	(763)					(763)	(763)
Common stock dividends	(6,575)					(6,575)	(6,575)
Allocation of ESOP shares to participants for compensation	1,447		1,447				1,447
Exercise of common stock options	5,598		4,550	1,048			5,598
Restricted stock awards	203		(4)	207			203
ESOP distribution in common stock	4,879		3,543	1,336			4,879
Accretion of Redeemable noncontrolling interest	(456)		(456)				(456)
Ending Balance, Value at Sep. 30, 2016	$ 244,854	$ 12,393	$ 748,177	$ (438,404)	$ (24,362)	$ (67,109)	$ 230,695	$ 14,159
Beginning Balance, Shares at Mar. 31, 2016		153,560		99,123
Exercise of common stock options, Shares				(236)
Restricted stock awards, Shares				(47)
ESOP distribution in common stock, Shares				(300)
Ending Balance, Shares at Sep. 30, 2016		153,560		98,540

Condensed Consolidated Stateme8

Condensed Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Stockholders' Equity [Abstract]
Common stock dividends per share	$ 0.06	$ 0.05	$ 0.12	$ 0.10

Condensed Consolidated Stateme9

Condensed Consolidated Statements of Mezzanine Equity - USD ($) shares in Thousands, $ in Thousands	Total	Redeemable Non-controlling Interest [Member]	Redeemable Convertible Preferred Stock [Member]	Deferred Compensation - Unearned ESOP Shares [Member]	Total Mezzanine Equity [Member]
Beginning Balance, Value at Mar. 31, 2015			$ 320,490	$ (212,469)	$ 108,021
Allocation of ESOP shares to participants for compensation	$ 2,707			3,543	3,543
ESOP distribution in common stock			(7,188)		(7,188)
Acquisition of Redeemable noncontrolling interest		$ 6,330			6,330
Accretion of Redeemable noncontrolling interest		257			257
Ending Balance, Value at Sep. 30, 2015		6,698	$ 313,302	$ (208,926)	111,074
Beginning Balance, Shares at Mar. 31, 2015			25,639	16,990
Allocation of ESOP shares to participants for Compensation, Shares				(283)
ESOP distribution in common stock, Shares			(575)
Ending Balance, Shares at Sep. 30, 2015			25,064	16,707
Beginning Balance, Value at Mar. 31, 2016	111,747	7,171	$ 310,240	$ (205,664)	111,747
Net income		502			502
Allocation of ESOP shares to participants for compensation	1,447			3,656	3,656
ESOP distribution in common stock			(4,879)		(4,879)
Accretion of Redeemable noncontrolling interest		742			742
Ending Balance, Value at Sep. 30, 2016	$ 111,768	$ 8,415	$ 305,361	$ (202,008)	$ 111,768
Beginning Balance, Shares at Mar. 31, 2016			24,819	16,448
Allocation of ESOP shares to participants for Compensation, Shares				(293)
ESOP distribution in common stock, Shares			(390)
Ending Balance, Shares at Sep. 30, 2016			24,429	16,155

Background and Summary of Signi

Background and Summary of Significant Accounting Policies	6 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Background and Summary of Significant Accounting Policies	1. BACKGROUND AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Description of Business Advanced Drainage Systems, Inc. (collectively with its subsidiaries referred to as “ADS” or the “Company”), a Delaware Corporation, designs, manufactures and markets high performance thermoplastic corrugated pipe and related water management products, primarily in North and South America and Europe. The broad product line includes corrugated high density polyethylene (or “HDPE”) pipe, polypropylene (or “PP”) pipe and related water management products. The Company is managed based primarily on the geographies in which it operates and reports results of operations in two reportable segments. The reportable segments are Domestic and International. 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, 2016 was derived from audited financial statements included in the Annual Report on Form 10-K/A 10-K/A”). 10-K/A. 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 loss (income) of unconsolidated affiliates in the Condensed Consolidated Statements of Operations. All intercompany balances and transactions have been eliminated in consolidation. Recent Accounting Guidance Recently Adopted Accounting Guidance Debt Issuance Costs Deferred Tax Assets and Liabilities non-current, non-current non-current. Consolidation Recent Accounting Guidance Not Yet Adopted Definition of a Business With the exception of the pronouncements described above, there have been no new accounting pronouncements issued or adopted since the filing of the Fiscal 2016 Form 10-K

Inventories

Inventories	6 Months Ended
	Sep. 30, 2016
Inventory Disclosure [Abstract]
Inventories	2. INVENTORIES Inventories as of the periods presented consisted of the following: September 30, 2016 March 31, 2016 (In thousands) Raw materials $ 53,463 $ 46,604 Finished goods 169,763 183,862 Total inventories $ 223,226 $ 230,466 There were no work-in-process

Fair Value Measurement

Fair Value Measurement	6 Months Ended
	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurement	3. FAIR VALUE MEASUREMENT The fair value measurements and disclosure principles of ASC 820 - Fair Value Measurements and Disclosures define fair value, establish a framework for measuring fair value and provide disclosure requirements about fair value measurements. These principles define a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows: Level 1 — Quoted prices (unadjusted) in active markets for identical assets or liabilities that the entity has the ability to access as of the measurement date. Level 2 — Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. Level 3 — Significant unobservable inputs that reflect a reporting entity’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. When applying fair value principles in the valuation of assets and liabilities, the Company maximizes the use of quoted market prices and minimizes the use of unobservable inputs. When active market quotes are not available for financial assets and liabilities, the Company uses industry standard valuation models. Where applicable, these models project future cash flows and discount the future amounts to a present value using market-based observable inputs including credit risk, interest rate curves, foreign currency rates and forward and spot prices for currencies. In circumstances where market-based observable inputs are not available, management judgment is used to develop assumptions to estimate fair value. Generally, the fair value of Level 3 instruments is estimated as the net present value of expected future cash flows based on internal and external inputs. Recurring Fair Value Measurements The assets and liabilities carried at fair value as of the periods presented were as follows: September 30, 2016 Total Level 1 Level 2 Level 3 (In thousands) Assets: Derivative assets – diesel fuel contracts $ 274 $ — $ 274 $ — Total assets at fair value on a recurring basis $ 274 $ — $ 274 $ — Liabilities: Derivative liability - diesel fuel contracts 717 — 717 — Derivative liability - propylene swaps 1,380 — 1,380 — Contingent consideration for acquisitions 1,997 — — 1,997 Total liabilities at fair value on a recurring basis $ 4,094 $ — $ 2,097 $ 1,997 March 31, 2016 Total Level 1 Level 2 Level 3 (In thousands) Assets: Derivative assets - diesel fuel contracts $ 11 $ — $ 11 $ — Total assets at fair value on a recurring basis $ 11 $ — $ 11 $ — Liabilities: Derivative liability - interest rate swaps $ 252 $ — $ 252 $ — Derivative liability - diesel fuel contracts 2,615 — 2,615 — Derivative liability - propylene swaps 8,027 — 8,027 — Contingent consideration for acquisitions 2,858 — — 2,858 Total liabilities at fair value on a recurring basis $ 13,752 $ — $ 10,894 $ 2,858 For the six months ended September 30, 2016 and 2015, respectively, there were no transfers in or out of Levels 1, 2 and 3. Valuation of Contingent Consideration for Acquisitions The fair values of the contingent consideration payables for acquisitions were calculated based on a discounted cash flow model, whereby the probability-weighted future payment value is discounted to the present value using a market discount rate. The method used to price these liabilities is considered Level 3, due to the subjective nature of the unobservable inputs used to determine the fair value. Changes in the fair value of recurring fair value measurements using significant unobservable inputs (Level 3) for the periods presented were as follows: Three Months Ended September 30, 2016 September 30, 2015 (In thousands) Balance at the beginning of the period $ 2,199 $ 2,285 Acquisition — 750 Change in fair value 31 45 Payments of contingent consideration liability (233 ) (211 ) Balance at the end of the period $ 1,997 $ 2,869 Six Months Ended September 30, 2016 September 30, 2015 (In thousands) Balance at the beginning of the period $ 2,858 $ 2,444 Acquisition — 750 Change in fair value 57 100 Payments of contingent consideration liability (918 ) (425 ) Balance at the end of the period $ 1,997 $ 2,869

Related Party Transactions

Related Party Transactions	6 Months Ended
	Sep. 30, 2016
Related Party Transactions [Abstract]
Related Party Transactions	4. RELATED PARTY TRANSACTIONS ADS Mexicana ADS conducts business in Mexico and Central America through its joint venture ADS Mexicana, S.A. de C.V. (together with its affiliate ADS Corporativo, 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. During the three and six months ended September 30, 2016 and 2015, ADS Mexicana compensated certain owners and former owners of Grupo Altima, the joint venture partner of ADS Mexicana, for consulting services related to the operations of the business and a noncompete arrangement. These cash payments were $0.1 million or less in each of the three and six month periods ended September 30, 2016 and 2015. Occasionally, ADS and ADS Mexicana jointly enter into agreements for pipe sales with related parties. There were no such sales in either the three and six months ended September 30, 2016 or 2015. However, outstanding receivables related to such sales from prior periods were $0.3 million as of September 30, 2016 and March 31, 2016. In April 2015, ADS Mexicana borrowed $3.0 million under a revolving credit facility arrangement with Scotia Bank and loaned that amount to ADS. The loan was repaid in May 2015. In June 2015, ADS Mexicana borrowed $3.9 million under the Scotia Bank credit facility and loaned it to an entity owned by a Grupo Altima owner, and such loan was repaid in July 2015. The applicable interest rates for the loans were 2.15% and 4.81%, respectively. ADS does not guarantee the borrowings from this facility, and therefore does not anticipate any required contributions related to the balance of this credit facility. The Company is the guarantor of 100% of a second credit facility for ADS Mexicana, and the Company’s maximum potential payment under this guarantee totals $12.0 million. The outstanding balance as of September 30, 2016 was $2.7 million and there were no borrowings outstanding under this facility as of March 31, 2016. South American Joint Venture The Tuberias Tigre – ADS Limitada joint venture (the “South American Joint Venture”) manufactures and sells HDPE corrugated pipe in the South American market. ADS is the guarantor for 50% of the South American Joint Venture’s credit facility, and the debt guarantee is shared equally with the joint venture partner. The Company’s maximum potential obligation under this guarantee totals $11.0 million as of September 30, 2016. The maximum borrowings permitted under the South American Joint Venture’s credit facility are $19.0 million. This credit facility allows borrowings in either Chilean pesos or US dollars at a fixed interest rate determined at inception of each draw on the facility. The guarantee of the South American Joint Venture’s debt expires on July 31, 2017. ADS does not anticipate any required contributions related to the balance of this credit facility. As of September 30, 2016 and March 31, 2016, the outstanding principal balances of the credit facility including letters of credit were $17.1 million and $16.7 million, respectively. The weighted average interest rate as of September 30, 2016 was 2.00% on U.S. dollar denominated loans and 7.11% on Chilean peso denominated loans. ADS and the South American Joint Venture have entered into shared services arrangements in order to execute the joint venture services. Included within these arrangements are the lease of an office and plant location used to conduct business and operating expenses related to these leased facilities. Occasionally, the South American Joint Venture enters into agreements for pipe sales with ADS and its other related parties, which totaled $0.3 million and $0.5 million for the three and six months ended September 30, 2016, respectively, and $0.2 million and $0.9 million for the three and six months ended September 30, 2015, respectively. BaySaver BaySaver Technologies LLC (“BaySaver”) is a joint venture that was established to produce and distribute water quality filters and separators used in the removal of sediment and pollution from storm water. ADS owns 65% of the outstanding stock of BaySaver and consolidates its interest in BaySaver. Prior to July 17, 2015, the Company accounted for Baysaver as an equity method investment. ADS and BaySaver have entered into shared services arrangements in order to execute the joint venture services. Included within these arrangements are the lease of a plant and adjacent yard used to conduct business and operating expenses related to the leased facility. Occasionally, ADS and BaySaver jointly enter into agreements for sales of pipe and Allied Products with their related parties, which were immaterial for the periods presented.

Debt

Debt	6 Months Ended
	Sep. 30, 2016
Debt Disclosure [Abstract]
Debt	5. DEBT The adoption during the quarter ended June 30, 2016 of the accounting standard updates relating to debt issuance costs required retrospective presentation, which led the Company to reduce its Other assets and its Long-term debt obligation on its Condensed Consolidated Balance Sheet as of March 31, 2016 by $3.1 million. The updates had no effect on the Company’s Condensed Consolidated Statements of Operations, Condensed Consolidated Statements of Comprehensive Income, Condensed Consolidated Statements of Cash Flows and Condensed Consolidated Statements of Stockholders’ Equity and Mezzanine Equity. Long-term debt as of the periods presented consisted of the following: September 30, 2016 March 31, 2016 (In thousands) Bank Term Loans Revolving Credit Facility — ADS $ 191,000 $ 166,000 Revolving Credit Facility — ADS Mexicana 2,700 — Term Note 77,500 82,500 Senior Notes payable 75,000 100,000 Industrial revenue bonds 2,285 2,715 ADS Mexicana Scotia bank revolving credit facility — — Equipment financing 3,153 — Total 351,638 351,215 Unamortized debt issuance costs (2,429 ) (3,131 ) Current maturities (36,497 ) (35,870 ) Long-term debt obligation $ 312,712 $ 312,214 In June 2016, ADS signed a Master Loan and Security Agreement for the financing of equipment in the U.S. and Canada for an aggregate amount of up to $4.5 million. During fiscal 2017, the Company issued $3.2 million of Equipment Notes with an average fixed interest rate at 2.58%. Each Equipment Note amortizes the principal over five years and is payable monthly.

Derivative Transactions

Derivative Transactions	6 Months Ended
	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Derivative Transactions	6. DERIVATIVE TRANSACTIONS The Company uses interest rate swaps, commodity options in the form of collars and swaps, and foreign currency forward contracts to manage its various exposures to interest rate, commodity price and foreign currency exchange rate fluctuations. For interest rate swaps, gains and losses resulting from the difference between the spot rate and applicable base rate is recorded in interest expense. For collars, commodity swaps and foreign exchange forward contracts, contract settlement gains and losses are recorded in the Condensed Consolidated Statements of Operations in Derivative (gains) losses and other (income) expense, net. Gains and losses related to mark-to-market The Company recorded losses and (gains) on mark-to-market Three Months Ended September 30, 2016 2015 (in thousands) Propylene swaps $ (3,334 ) $ 4,496 Diesel fuel option collars (689 ) 1,348 Interest rate swaps (130 ) (71 ) Total unrealized mark-to-market $ (4,153 ) $ 5,773 Propylene swaps 1,611 2,965 Diesel fuel option collars 679 764 Foreign exchange forward contracts — (38 ) Total realized losses $ 2,290 $ 3,691 Six Months Ended September 30, 2016 2015 (in thousands) Propylene swaps $ (6,647 ) $ 9,559 Diesel fuel option collars (2,161 ) 90 Interest rate swaps (252 ) (115 ) Total unrealized mark-to-market $ (9,060 ) $ 9,534 Propylene swaps 4,683 5,401 Diesel fuel option collars 1,385 1,102 Foreign exchange forward contracts — (38 ) Total realized losses $ 6,068 $ 6,465 In addition to the above amounts, Derivative (gains) losses and other (income) expense, net in the Condensed Consolidated Statements of Operations also includes other non-operating September 30, 2016 Assets Liabilities Receivables Other assets Other accrued liabilities Other liabilities (In thousands) Interest rate swaps $ — $ — $ — $ — Diesel fuel option collars and swaps 208 66 (664 ) (53 ) Propylene swaps — — (1,380 ) — March 31, 2016 Assets Liabilities Receivables Other assets Other accrued liabilities Other liabilities (In thousands) Interest rate swaps $ — $ — $ (252 ) $ — Diesel fuel option collars and swaps — 11 (2,609 ) (6 ) Propylene swaps — — (8,027 ) —

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	7. COMMITMENTS AND CONTINGENCIES Purchase Commitments The Company secures supplies of resin raw material by agreeing to purchase quantities during a future given period at a fixed price. These purchase contracts range from 1 to 12 months and occur in the ordinary course of business. Under such purchase contracts in place at September 30, 2016, ADS has agreed to purchase resin over the period October 2016 through December 2016 at a committed purchase cost of $6.1 million. Litigation and Other Proceedings On July 29, 2015, a putative stockholder class action, Christopher Wyche, individually and on behalf of all others similarly situated v. Advanced Drainage Systems, Inc., et al. (Case No. 1:15-cv-05955-KPF), 10b-5 On August 12, 2015, the SEC Division of Enforcement (“Enforcement Division”) informed the Company that it was conducting an informal inquiry with respect to the Company. As part of this inquiry, the Enforcement Division requested the voluntary production of certain documents generally related to the Company’s accounting practices. Subsequent to the initial voluntary production request, the Company received document subpoenas from the Enforcement Division pursuant to a formal order of investigation. The Company has from the outset cooperated with the Enforcement Division’s investigation and intends to continue to do so. While it is reasonably possible that this investigation ultimately could be resolved unfavorably to the Company, the Company is currently unable to estimate the range of possible losses, but they could be material. The Company is involved from time to time in various legal proceedings that arise in the ordinary course of its 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 believes that such litigation, claims and administrative proceedings will not have a material adverse impact on its financial position or its results of operations. The Company records a liability when a loss is considered probable and the amount can be reasonably estimated. In management’s opinion, none of these proceedings are material in relation to the Company’s consolidated operations, cash flows, or financial position, and the Company has adequate accrued liabilities to cover its estimated probable loss exposure.

Income Taxes

Income Taxes	6 Months Ended
	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	8. 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 onetime charges, as well as discrete events. For the six months ended September 30, 2016 and 2015, the Company utilized an effective tax rate of 39.8% and 31.3%, respectively, to calculate its provision for income taxes. These rates differ from the federal statutory rate of 35% due to state and local taxes and non-deductible

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	9. STOCK-BASED COMPENSATION ADS has several programs for stock-based payments to employees and directors, including stock options and restricted stock. Equity-classified restricted stock awards are measured based on the grant-date estimated fair value of each award. Liability-classified stock option and restricted stock awards are re-measured pro-rata The Company accounts for all stock options granted to employees as liability-classified awards. Prior to the Company’s IPO in July 2014, the Company also accounted for all restricted stock granted to employees as liability-classified awards. However, since the IPO, the Company also accounted for all restricted stock granted to employees as equity-classified awards. The Company accounts for all restricted stock granted to directors as equity-classified awards. The Company recognized stock-based compensation expense (benefit) in the following line items of the Condensed Consolidated Statements of Operations for the three and six month periods ended September 30, 2016 and 2015: Three Months Ended September 30, Six Months Ended September 30, (Amounts in thousands) 2016 2015 2016 2015 Component of income before income taxes: Cost of goods sold $ (100 ) $ — $ — $ — Selling expenses (100 ) — 200 — General and administrative expenses (2,708 ) 1,170 5,912 2,212 Total stock-based compensation expense $ (2,908 ) $ 1,170 $ 6,112 $ 2,212 Stock Options Our 2000 stock option plan (“2000 Plan”) provides for the issuance of statutory and non-statutory Our 2013 stock option plan (“2013 Plan”) provides for the issuance of non-statutory The Company determines the fair value of the options based on the Black-Scholes option pricing model. This methodology requires significant inputs including the price of our common stock, risk-free interest rate, dividend yield and expiration date. We estimate the fair value of stock options using a Black-Scholes option-pricing model, with assumptions as follows: Three Months Ended September 30, Six Months Ended September 30, 2016 2015 2016 2015 Common stock price $23.06 - $28.17 $26.35 - $32.37 $22.00 - $28.17 $26.35 - $33.03 Expected stock price volatility 29.5% - 35.9% 28.9% - 45.1% 29.5% - 35.9% 28.9% - 45.1% Risk-free interest rate 0.7% - 1.3% 0.1% - 1.8% 0.7% - 1.3% 0.1% - 1.8% Weighted-average expected option life (years) 0.3 – 5.7 0.3 – 6.7 0.3 – 5.7 0.3 – 6.7 Dividend yield 1.0% 0.7% 1.0% 0.7%

Net Income Per Share

Net Income Per Share	6 Months Ended
	Sep. 30, 2016
Earnings Per Share [Abstract]
Net Income Per Share	10. NET INCOME PER SHARE The Company is required to apply the two-class two-class 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 September 30, Six Months Ended September 30, 2016 2015 2016 2015 (In thousands, except per share data) NET INCOME PER SHARE—BASIC: Net income attributable to ADS $ 23,734 $ 12,346 $ 42,007 $ 24,040 Adjustments for: Accretion of Redeemable noncontrolling interest (380 ) (257 ) (742 ) (257 ) Dividends to Redeemable convertible preferred stockholders (415 ) (362 ) (840 ) (733 ) Dividends paid to unvested restricted stockholders (24 ) (6 ) (54 ) (12 ) Net income available to common stockholders and participating securities 22,915 11,721 40,371 23,038 Undistributed income allocated to participating securities (2,040 ) (980 ) (3,563 ) (1,949 ) Net income available to common stockholders – Basic 20,875 10,741 36,808 21,089 Weighted average number of common shares outstanding – Basic 54,429 53,882 54,250 53,753 Net income per common share – Basic $ 0.38 $ 0.20 $ 0.68 $ 0.39 NET INCOME PER SHARE—DILUTED: Net income available to common stockholders – Diluted $ 20,875 $ 10,741 $ 36,808 $ 21,089 Weighted average number of common shares outstanding – Basic 54,429 53,882 54,250 53,753 Assumed exercise of stock options 847 1,312 865 1,340 Weighted average number of common shares outstanding – Diluted 55,276 55,194 55,115 55,093 Net income per common share – Diluted $ 0.38 $ 0.19 $ 0.67 $ 0.38 Potentially dilutive securities excluded as anti-dilutive 6,264 6,476 6,355 6,583

Business Segments Information

Business Segments Information	6 Months Ended
	Sep. 30, 2016
Segment Reporting [Abstract]
Business Segments Information	11. BUSINESS SEGMENTS INFORMATION The Company operates its business in two distinct operating and reportable segments based on the markets it serves: “Domestic” and “International”. The Chief Operating Decision Maker (“CODM”) evaluates segment reporting based on Net sales and Segment Adjusted EBITDA, which is calculated as net income or loss before interest, income taxes, depreciation and amortization, stock-based compensation expense, non-cash 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 September 30, Six Months Ended September 30, 2016 2015 2016 2015 (In thousands) (In thousands) Domestic Pipe $ 222,026 $ 238,291 $ 445,336 $ 458,826 Allied Products 89,747 89,009 179,200 166,640 Total domestic 311,773 327,300 624,536 625,466 International Pipe 38,910 44,542 73,282 86,917 Allied Products 10,102 11,487 20,543 20,070 Total international 49,012 56,029 93,825 106,987 Total Net sales $ 360,785 $ 383,329 $ 718,361 $ 732,453 The following sets forth certain additional financial information attributable to our reportable segments for the periods presented: Domestic International Total (In thousands) For the three months ended September 30, 2016 Net sales $ 311,773 $ 49,012 $ 360,785 Gross profit 79,736 10,776 90,512 Segment Adjusted EBITDA 57,114 8,487 65,601 Interest expense 4,436 110 4,546 Income tax expense 13,824 1,524 15,348 Depreciation and amortization 15,829 2,181 18,010 Equity in net loss of unconsolidated affiliates (44 ) (771 ) (815 ) Capital expenditures 10,496 705 11,201 For the three months ended September 30, 2015 Net sales $ 327,300 $ 56,029 $ 383,329 Gross profit 76,131 10,398 86,529 Segment Adjusted EBITDA 55,443 8,294 63,737 Interest expense 4,901 46 4,947 Income tax expense (benefit) 6,703 (1,516 ) 5,187 Depreciation and amortization 15,243 2,124 17,367 Equity in net loss of unconsolidated affiliates (12 ) (360 ) (372 ) Capital expenditures 8,028 1,971 9,999 Domestic International Total For the six months ended September 30, 2016 Net sales $ 624,536 $ 93,825 $ 718,361 Gross profit 167,462 19,656 187,118 Segment Adjusted EBITDA 121,754 15,655 137,409 Interest expense 9,109 221 9,330 Income tax expense 25,977 3,565 29,542 Depreciation and amortization 31,507 4,529 36,036 Equity in net loss of unconsolidated affiliates (27 ) (884 ) (911 ) Capital expenditures 21,991 1,805 23,796 For the six months ended September 30, 2015 Net sales $ 625,466 $ 106,987 $ 732,453 Gross profit 137,820 23,186 161,006 Segment Adjusted EBITDA 96,412 19,773 116,185 Interest expense 8,938 295 9,233 Income tax expense (benefit) 13,529 (463 ) 13,066 Depreciation and amortization 30,405 4,346 34,751 Equity in net income (loss) of unconsolidated affiliates 324 (342 ) (18 ) Capital expenditures 17,812 3,722 21,534 The following sets forth certain additional financial information attributable to the reportable segments as of the periods presented: Domestic International Eliminations Total (In thousands) As of September 30, 2016 Investment in unconsolidated affiliates $ 2,905 $ 9,646 $ — $ 12,551 Total identifiable assets 920,835 147,930 (13,886 ) 1,054,879 As of March 31, 2016 Investment in unconsolidated affiliates $ 2,932 $ 10,256 $ — $ 13,188 Total identifiable assets 949,286 147,814 (59,784 ) 1,037,316 The following reconciles segment adjusted EBITDA to net income for the periods presented: Three Months Ended September 30, 2016 2015 Domestic International Domestic International (In thousands) Reconciliation of Segment Adjusted EBITDA: Net income $ 21,049 $ 3,232 $ 8,641 $ 7,287 Depreciation and amortization 15,829 2,181 15,243 2,124 Interest expense 4,436 110 4,901 46 Income tax expense 13,824 1,524 6,703 (1,516 ) Segment EBITDA 55,138 7,047 35,488 7,941 Derivative fair value adjustments (4,153 ) — 5,784 (11 ) Foreign currency transaction losses (gains) — 685 — (151 ) Loss on disposal of assets or businesses 512 225 289 6 Unconsolidated affiliates interest, tax, depreciation and amortization (a) 272 530 260 509 Contingent consideration remeasurement 33 — 45 — Stock-based compensation (benefit) expense (2,908 ) — 1,170 — ESOP deferred compensation 2,368 — 3,125 — Expense related to executive termination payments 79 — 82 — Loss related to BaySaver acquisition — — 490 — Restatement-related costs (b) 5,773 — 8,710 — Segment Adjusted EBITDA $ 57,114 $ 8,487 $ 55,443 $ 8,294 (a) Includes the proportional share of interest, income taxes, depreciation and amortization related to the South American Joint Venture and the Tigre-ADS (b) Represents expenses recorded related to legal, accounting and other professional fees incurred in connection with the restatement of our prior period financial statements as reflected in the Annual Report on Form 10-K 10-K”) 10-Q 10-K Six Months Ended September 30, 2016 2015 Domestic International Domestic International (In thousands) Reconciliation of Segment Adjusted EBITDA: Net income $ 36,471 $ 7,231 $ 14,221 $ 14,489 Depreciation and amortization 31,507 4,529 30,405 4,346 Interest expense 9,109 221 8,938 295 Income tax expense (benefit) 25,977 3,565 13,529 (463 ) Segment EBITDA 103,064 15,546 67,093 18,667 Derivative fair value adjustments (9,060 ) — 9,506 28 Foreign currency transaction (gains) losses — (1,077 ) — 166 Loss (gain) on disposal of assets or businesses 782 157 1,341 (180 ) Unconsolidated affiliates interest, tax, depreciation and amortization (a) 551 1,029 546 1,092 Contingent consideration remeasurement 57 — 100 — Stock-based compensation expense 6,112 — 2,212 — ESOP deferred compensation 5,105 — 6,250 Expense related to executive termination payments 158 — 164 — Loss related to BaySaver acquisition — — 490 — Restatement-related costs (b) 14,985 — 8,710 — Segment Adjusted EBITDA $ 121,754 $ 15,655 $ 96,412 $ 19,773 (a) Includes the proportional share of interest, income taxes, depreciation and amortization related to the South American Joint Venture and the Tigre-ADS (b) Represents expenses recorded related to legal, accounting and other professional fees incurred in connection with the restatement of our prior period financial statements as reflected in the Fiscal 2015 Form 10-K 10-Q 10-K

Subsequent Events

Subsequent Events	6 Months Ended
	Sep. 30, 2016
Subsequent Events [Abstract]
Subsequent Events	12. SUBSEQUENT EVENTS Subsequent Events Related to the Bank Term Loans and Senior Notes In October 2016, the Company obtained consents from the lenders of the Bank Term Loans and Senior Notes. These consents had the effect of extending the time for delivery of our first quarter fiscal 2017 quarterly financial information to November 30, 2016 and our second quarter fiscal 2017 quarterly financial information to December 31, 2016, whereby an event of default was waived as long as those items are delivered within a 30 day grace period after those dates. In addition, the consents also permitted the Company’s payment of a quarterly dividend of $0.06 per share on common shares in December 2016, as well as reaffirmed the annual dividend of $0.0195 per share to be paid on shares of preferred stock in March 2017. In December 2016, the Company obtained additional consents from the lenders of the Bank Term Loans and Senior Notes. These consents had the effect of extending the time for delivery of our first quarter fiscal 2017 quarterly financial information to January 31, 2017. Subsequent Event Related to the ADS Mexicana Revolving Credit Facility During the period from November 3, 2014 to November 11, 2015, our joint venture, ADS Mexicana, made intercompany revolving loans to ADS, Inc. The maximum aggregate amount of the intercompany loans outstanding at any time was $6.9 million. Since November 11, 2015, there have been no other intercompany loans made, and no balance remains outstanding. According to the terms of the ADS Mexicana Revolving Credit Facility, ADS Mexicana was not permitted to make such loans, triggering an Event of Default, and ADS Mexicana had an obligation to report such Event of Default. These events together were characterized as a Specified Default. On December 13, 2016, ADS Mexicana obtained a covenant waiver on the ADS Mexicana Revolving Credit Facility for the Specified Default from the lenders. Subsequent Events Related to Dividends on Common Stock During the third quarter of fiscal 2017, the Company declared a quarterly cash dividend of $0.06 per share of common stock. The third quarter dividend was payable on December 15, 2016 to stockholders of record at the close of business on December 1, 2016. Other Subsequent Events In the third quarter of fiscal 2017, the Company shortened the remaining useful life of certain assets related to three manufacturing facilities resulting in anitcipated accelerated depreciation expense of less than $2 million. One of these facilities closed in the third quarter of fiscal 2017, and ADS committed to a plan to reduce production at the other facilities in the third quarter of fiscal 2017. In December 2016, a fire destroyed approximately $1.1 million of finished goods inventory at the Company’s South American Joint Venture. The Company’s portion of the loss will be recorded in Equity in net loss of unconsolidated affiliates. While the Company expects that the loss is recoverable through insurance proceeds, the amount of the recovery is not currently determinable. Once the amount of recovery is determinable, the Company’s portion will be recorded in Equity in net loss of unconsolidated affiliates.

Background and Summary of Sig22

Background and Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Sep. 30, 2016
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, 2016 was derived from audited financial statements included in the Annual Report on Form 10-K/A 10-K/A”). 10-K/A.
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 loss (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 Recently Adopted Accounting Guidance Debt Issuance Costs Deferred Tax Assets and Liabilities non-current, non-current non-current. Consolidation Recent Accounting Guidance Not Yet Adopted Definition of a Business With the exception of the pronouncements described above, there have been no new accounting pronouncements issued or adopted since the filing of the Fiscal 2016 Form 10-K
Fair Value Measurements	The fair value measurements and disclosure principles of ASC 820 - Fair Value Measurements and Disclosures define fair value, establish a framework for measuring fair value and provide disclosure requirements about fair value measurements. These principles define a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows: Level 1 — Quoted prices (unadjusted) in active markets for identical assets or liabilities that the entity has the ability to access as of the measurement date. Level 2 — Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. Level 3 — Significant unobservable inputs that reflect a reporting entity’s own assumptions about the assumptions that market participants would use in pricing an asset or liability.

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Sep. 30, 2016
Inventory Disclosure [Abstract]
Schedule of Inventories	Inventories as of the periods presented consisted of the following: September 30, 2016 March 31, 2016 (In thousands) Raw materials $ 53,463 $ 46,604 Finished goods 169,763 183,862 Total inventories $ 223,226 $ 230,466

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	6 Months Ended
	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Summary of Assets and Liabilities Carried at Fair Value	The assets and liabilities carried at fair value as of the periods presented were as follows: September 30, 2016 Total Level 1 Level 2 Level 3 (In thousands) Assets: Derivative assets – diesel fuel contracts $ 274 $ — $ 274 $ — Total assets at fair value on a recurring basis $ 274 $ — $ 274 $ — Liabilities: Derivative liability - diesel fuel contracts 717 — 717 — Derivative liability - propylene swaps 1,380 — 1,380 — Contingent consideration for acquisitions 1,997 — — 1,997 Total liabilities at fair value on a recurring basis $ 4,094 $ — $ 2,097 $ 1,997 March 31, 2016 Total Level 1 Level 2 Level 3 (In thousands) Assets: Derivative assets - diesel fuel contracts $ 11 $ — $ 11 $ — Total assets at fair value on a recurring basis $ 11 $ — $ 11 $ — Liabilities: Derivative liability - interest rate swaps $ 252 $ — $ 252 $ — Derivative liability - diesel fuel contracts 2,615 — 2,615 — Derivative liability - propylene swaps 8,027 — 8,027 — Contingent consideration for acquisitions 2,858 — — 2,858 Total liabilities at fair value on a recurring basis $ 13,752 $ — $ 10,894 $ 2,858
Summary of Changes in Fair Value of Recurring Fair Value Measurements Using Unobservable Inputs	Changes in the fair value of recurring fair value measurements using significant unobservable inputs (Level 3) for the periods presented were as follows: Three Months Ended September 30, 2016 September 30, 2015 (In thousands) Balance at the beginning of the period $ 2,199 $ 2,285 Acquisition — 750 Change in fair value 31 45 Payments of contingent consideration liability (233 ) (211 ) Balance at the end of the period $ 1,997 $ 2,869 Six Months Ended September 30, 2016 September 30, 2015 (In thousands) Balance at the beginning of the period $ 2,858 $ 2,444 Acquisition — 750 Change in fair value 57 100 Payments of contingent consideration liability (918 ) (425 ) Balance at the end of the period $ 1,997 $ 2,869

Debt (Tables)

Debt (Tables)	6 Months Ended
	Sep. 30, 2016
Debt Disclosure [Abstract]
Long-Term Debt	Long-term debt as of the periods presented consisted of the following: September 30, 2016 March 31, 2016 (In thousands) Bank Term Loans Revolving Credit Facility — ADS $ 191,000 $ 166,000 Revolving Credit Facility — ADS Mexicana 2,700 — Term Note 77,500 82,500 Senior Notes payable 75,000 100,000 Industrial revenue bonds 2,285 2,715 ADS Mexicana Scotia bank revolving credit facility — — Equipment financing 3,153 — Total 351,638 351,215 Unamortized debt issuance costs (2,429 ) (3,131 ) Current maturities (36,497 ) (35,870 ) Long-term debt obligation $ 312,712 $ 312,214

Derivative Transactions (Tables

Derivative Transactions (Tables)	6 Months Ended
	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Schedule of Cash Settlements and Losses and (Gains) on Mark-to-Market Adjustments for Changes in Fair Value of Derivative Contracts	The Company recorded losses and (gains) on mark-to-market Three Months Ended September 30, 2016 2015 (in thousands) Propylene swaps $ (3,334 ) $ 4,496 Diesel fuel option collars (689 ) 1,348 Interest rate swaps (130 ) (71 ) Total unrealized mark-to-market $ (4,153 ) $ 5,773 Propylene swaps 1,611 2,965 Diesel fuel option collars 679 764 Foreign exchange forward contracts — (38 ) Total realized losses $ 2,290 $ 3,691 Six Months Ended September 30, 2016 2015 (in thousands) Propylene swaps $ (6,647 ) $ 9,559 Diesel fuel option collars (2,161 ) 90 Interest rate swaps (252 ) (115 ) Total unrealized mark-to-market $ (9,060 ) $ 9,534 Propylene swaps 4,683 5,401 Diesel fuel option collars 1,385 1,102 Foreign exchange forward contracts — (38 ) Total realized losses $ 6,068 $ 6,465
Summary of Fair Values for Various Derivatives	A summary of the fair value of derivatives as of the periods presented is as follows: September 30, 2016 Assets Liabilities Receivables Other assets Other accrued liabilities Other liabilities (In thousands) Interest rate swaps $ — $ — $ — $ — Diesel fuel option collars and swaps 208 66 (664 ) (53 ) Propylene swaps — — (1,380 ) — March 31, 2016 Assets Liabilities Receivables Other assets Other accrued liabilities Other liabilities (In thousands) Interest rate swaps $ — $ — $ (252 ) $ — Diesel fuel option collars and swaps — 11 (2,609 ) (6 ) Propylene swaps — — (8,027 ) —

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Sep. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based Compensation Expense (Benefit) Recognized in Condensed Consolidated Statements of Operations	The Company recognized stock-based compensation expense (benefit) in the following line items of the Condensed Consolidated Statements of Operations for the three and six month periods ended September 30, 2016 and 2015: Three Months Ended September 30, Six Months Ended September 30, (Amounts in thousands) 2016 2015 2016 2015 Component of income before income taxes: Cost of goods sold $ (100 ) $ — $ — $ — Selling expenses (100 ) — 200 — General and administrative expenses (2,708 ) 1,170 5,912 2,212 Total stock-based compensation expense $ (2,908 ) $ 1,170 $ 6,112 $ 2,212
Schedule of Estimate Fair Value of Stock Options Granted	We estimate the fair value of stock options using a Black-Scholes option-pricing model, with assumptions as follows: Three Months Ended September 30, Six Months Ended September 30, 2016 2015 2016 2015 Common stock price $23.06 - $28.17 $26.35 - $32.37 $22.00 - $28.17 $26.35 - $33.03 Expected stock price volatility 29.5% - 35.9% 28.9% - 45.1% 29.5% - 35.9% 28.9% - 45.1% Risk-free interest rate 0.7% - 1.3% 0.1% - 1.8% 0.7% - 1.3% 0.1% - 1.8% Weighted-average expected option life (years) 0.3 – 5.7 0.3 – 6.7 0.3 – 5.7 0.3 – 6.7 Dividend yield 1.0% 0.7% 1.0% 0.7%

Net Income Per Share (Tables)

Net Income Per Share (Tables)	6 Months Ended
	Sep. 30, 2016
Earnings Per Share [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 September 30, Six Months Ended September 30, 2016 2015 2016 2015 (In thousands, except per share data) NET INCOME PER SHARE—BASIC: Net income attributable to ADS $ 23,734 $ 12,346 $ 42,007 $ 24,040 Adjustments for: Accretion of Redeemable noncontrolling interest (380 ) (257 ) (742 ) (257 ) Dividends to Redeemable convertible preferred stockholders (415 ) (362 ) (840 ) (733 ) Dividends paid to unvested restricted stockholders (24 ) (6 ) (54 ) (12 ) Net income available to common stockholders and participating securities 22,915 11,721 40,371 23,038 Undistributed income allocated to participating securities (2,040 ) (980 ) (3,563 ) (1,949 ) Net income available to common stockholders – Basic 20,875 10,741 36,808 21,089 Weighted average number of common shares outstanding – Basic 54,429 53,882 54,250 53,753 Net income per common share – Basic $ 0.38 $ 0.20 $ 0.68 $ 0.39 NET INCOME PER SHARE—DILUTED: Net income available to common stockholders – Diluted $ 20,875 $ 10,741 $ 36,808 $ 21,089 Weighted average number of common shares outstanding – Basic 54,429 53,882 54,250 53,753 Assumed exercise of stock options 847 1,312 865 1,340 Weighted average number of common shares outstanding – Diluted 55,276 55,194 55,115 55,093 Net income per common share – Diluted $ 0.38 $ 0.19 $ 0.67 $ 0.38 Potentially dilutive securities excluded as anti-dilutive 6,264 6,476 6,355 6,583

Business Segments Information (

Business Segments Information (Tables)	6 Months Ended
	Sep. 30, 2016
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 September 30, Six Months Ended September 30, 2016 2015 2016 2015 (In thousands) (In thousands) Domestic Pipe $ 222,026 $ 238,291 $ 445,336 $ 458,826 Allied Products 89,747 89,009 179,200 166,640 Total domestic 311,773 327,300 624,536 625,466 International Pipe 38,910 44,542 73,282 86,917 Allied Products 10,102 11,487 20,543 20,070 Total international 49,012 56,029 93,825 106,987 Total Net sales $ 360,785 $ 383,329 $ 718,361 $ 732,453
Schedule of Additional Financial Information Attributable to Reportable Segments	The following sets forth certain additional financial information attributable to our reportable segments for the periods presented: Domestic International Total (In thousands) For the three months ended September 30, 2016 Net sales $ 311,773 $ 49,012 $ 360,785 Gross profit 79,736 10,776 90,512 Segment Adjusted EBITDA 57,114 8,487 65,601 Interest expense 4,436 110 4,546 Income tax expense 13,824 1,524 15,348 Depreciation and amortization 15,829 2,181 18,010 Equity in net loss of unconsolidated affiliates (44 ) (771 ) (815 ) Capital expenditures 10,496 705 11,201 For the three months ended September 30, 2015 Net sales $ 327,300 $ 56,029 $ 383,329 Gross profit 76,131 10,398 86,529 Segment Adjusted EBITDA 55,443 8,294 63,737 Interest expense 4,901 46 4,947 Income tax expense (benefit) 6,703 (1,516 ) 5,187 Depreciation and amortization 15,243 2,124 17,367 Equity in net loss of unconsolidated affiliates (12 ) (360 ) (372 ) Capital expenditures 8,028 1,971 9,999 Domestic International Total For the six months ended September 30, 2016 Net sales $ 624,536 $ 93,825 $ 718,361 Gross profit 167,462 19,656 187,118 Segment Adjusted EBITDA 121,754 15,655 137,409 Interest expense 9,109 221 9,330 Income tax expense 25,977 3,565 29,542 Depreciation and amortization 31,507 4,529 36,036 Equity in net loss of unconsolidated affiliates (27 ) (884 ) (911 ) Capital expenditures 21,991 1,805 23,796 For the six months ended September 30, 2015 Net sales $ 625,466 $ 106,987 $ 732,453 Gross profit 137,820 23,186 161,006 Segment Adjusted EBITDA 96,412 19,773 116,185 Interest expense 8,938 295 9,233 Income tax expense (benefit) 13,529 (463 ) 13,066 Depreciation and amortization 30,405 4,346 34,751 Equity in net income (loss) of unconsolidated affiliates 324 (342 ) (18 ) Capital expenditures 17,812 3,722 21,534 The following sets forth certain additional financial information attributable to the reportable segments as of the periods presented: Domestic International Eliminations Total (In thousands) As of September 30, 2016 Investment in unconsolidated affiliates $ 2,905 $ 9,646 $ — $ 12,551 Total identifiable assets 920,835 147,930 (13,886 ) 1,054,879 As of March 31, 2016 Investment in unconsolidated affiliates $ 2,932 $ 10,256 $ — $ 13,188 Total identifiable assets 949,286 147,814 (59,784 ) 1,037,316
Schedule of Reconciliation of Segment Adjusted EBITDA to Net Income	The following reconciles segment adjusted EBITDA to net income for the periods presented: Three Months Ended September 30, 2016 2015 Domestic International Domestic International (In thousands) Reconciliation of Segment Adjusted EBITDA: Net income $ 21,049 $ 3,232 $ 8,641 $ 7,287 Depreciation and amortization 15,829 2,181 15,243 2,124 Interest expense 4,436 110 4,901 46 Income tax expense 13,824 1,524 6,703 (1,516 ) Segment EBITDA 55,138 7,047 35,488 7,941 Derivative fair value adjustments (4,153 ) — 5,784 (11 ) Foreign currency transaction losses (gains) — 685 — (151 ) Loss on disposal of assets or businesses 512 225 289 6 Unconsolidated affiliates interest, tax, depreciation and amortization (a) 272 530 260 509 Contingent consideration remeasurement 33 — 45 — Stock-based compensation (benefit) expense (2,908 ) — 1,170 — ESOP deferred compensation 2,368 — 3,125 — Expense related to executive termination payments 79 — 82 — Loss related to BaySaver acquisition — — 490 — Restatement-related costs (b) 5,773 — 8,710 — Segment Adjusted EBITDA $ 57,114 $ 8,487 $ 55,443 $ 8,294 (a) Includes the proportional share of interest, income taxes, depreciation and amortization related to the South American Joint Venture and the Tigre-ADS (b) Represents expenses recorded related to legal, accounting and other professional fees incurred in connection with the restatement of our prior period financial statements as reflected in the Annual Report on Form 10-K 10-K”) 10-Q 10-K Six Months Ended September 30, 2016 2015 Domestic International Domestic International (In thousands) Reconciliation of Segment Adjusted EBITDA: Net income $ 36,471 $ 7,231 $ 14,221 $ 14,489 Depreciation and amortization 31,507 4,529 30,405 4,346 Interest expense 9,109 221 8,938 295 Income tax expense (benefit) 25,977 3,565 13,529 (463 ) Segment EBITDA 103,064 15,546 67,093 18,667 Derivative fair value adjustments (9,060 ) — 9,506 28 Foreign currency transaction (gains) losses — (1,077 ) — 166 Loss (gain) on disposal of assets or businesses 782 157 1,341 (180 ) Unconsolidated affiliates interest, tax, depreciation and amortization (a) 551 1,029 546 1,092 Contingent consideration remeasurement 57 — 100 — Stock-based compensation expense 6,112 — 2,212 — ESOP deferred compensation 5,105 — 6,250 Expense related to executive termination payments 158 — 164 — Loss related to BaySaver acquisition — — 490 — Restatement-related costs (b) 14,985 — 8,710 — Segment Adjusted EBITDA $ 121,754 $ 15,655 $ 96,412 $ 19,773 (a) Includes the proportional share of interest, income taxes, depreciation and amortization related to the South American Joint Venture and the Tigre-ADS (b) Represents expenses recorded related to legal, accounting and other professional fees incurred in connection with the restatement of our prior period financial statements as reflected in the Fiscal 2015 Form 10-K 10-Q 10-K

Background and Summary of Sig30

Background and Summary of Significant Accounting Policies - Additional Information (Detail)	6 Months Ended
	Sep. 30, 2016USD ($)Segment	Mar. 31, 2016USD ($)
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments | Segment	2
Deferred Income Taxes and Other Current Assets [Member] | Adjustments for New Accounting Principle, Early Adoption [Member]
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]
Net current deferred tax assets | $	$ 0	$ 11,700,000

Inventories - Schedule of Inven

Inventories - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Mar. 31, 2016
Inventory Disclosure [Abstract]
Raw materials	$ 53,463	$ 46,604
Finished goods	169,763	183,862
Total inventories	$ 223,226	$ 230,466

Inventories - Additional Inform

Inventories - Additional Information (Detail) - USD ($)	Sep. 30, 2016	Mar. 31, 2016
Inventory Disclosure [Abstract]
Work-in-process inventories	$ 0	$ 0

Fair Value Measurement - Summar

Fair Value Measurement - Summary of Assets and Liabilities Carried at Fair Value (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2016	Mar. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value on a recurring basis	$ 274	$ 11
Contingent consideration for acquisitions	1,997	2,858
Total liabilities at fair value on a recurring basis	4,094	13,752
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value on a recurring basis	274	11
Total liabilities at fair value on a recurring basis	2,097	10,894
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration for acquisitions	1,997	2,858
Total liabilities at fair value on a recurring basis	1,997	2,858
Diesel Fuel Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	274	11
Derivative liability	717	2,615
Diesel Fuel Contracts [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	274	11
Derivative liability	717	2,615
Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability		252
Interest Rate Swaps [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability		252
Propylene Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	1,380	8,027
Propylene Swaps [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	$ 1,380	$ 8,027

Fair Value Measurement - Additi

Fair Value Measurement - Additional Information (Detail) - USD ($)	6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Fair value of assets and liabilities, additional transfers	$ 0	$ 0

Fair Value Measurement - Summ35

Fair Value Measurement - Summary of Changes in Fair Value of Recurring Fair Value Measurements Using Unobservable Inputs (Detail) - Level 3 [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance beginning	$ 2,199	$ 2,285	$ 2,858	$ 2,444
Acquisition		750		750
Change in fair value	31	45	57	100
Payments of contingent consideration liability	(233)	(211)	(918)	(425)
Balance ending	$ 1,997	$ 2,869	$ 1,997	$ 2,869

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Mar. 31, 2016	Nov. 11, 2015	Jun. 30, 2015	Apr. 30, 2015
Pipe Sales Joint Venture Agreement [Member]
Related Party Transaction [Line Items]
Proceeds from sales	$ 0	$ 0	$ 0	$ 0
Outstanding receivables from related party	300,000		300,000		$ 300,000
South American Joint Venture [Member]
Related Party Transaction [Line Items]
Outstanding letters of credit	17,100,000		17,100,000		16,700,000
Maximum borrowings permitted under credit facility	19,000,000		19,000,000
Maximum potential payment under guarantee	11,000,000		$ 11,000,000
Debt, expiration date			Jul. 31, 2017
Percentage of debt guarantee			50.00%
Sales with related parties	$ 300,000	$ 200,000	$ 500,000	$ 900,000
South American Joint Venture [Member] | US Dollar Denominated Loans [Member]
Related Party Transaction [Line Items]
Weighted average interest rate	2.00%		2.00%
South American Joint Venture [Member] | Chilean Peso Denominated Loans [Member]
Related Party Transaction [Line Items]
Weighted average interest rate	7.11%		7.11%
Consolidated Entity Excluding Variable Interest Entities (VIE) [Member]
Related Party Transaction [Line Items]
Company's ownership percentage	51.00%	51.00%	51.00%	51.00%
Guarantee percentage on credit facility			100.00%
Maximum potential guarantee payments	$ 12,000,000		$ 12,000,000
Guarantee description			The Company is the guarantor of 100% of a second credit facility for ADS Mexicana
Outstanding letters of credit	2,700,000		$ 2,700,000		$ 0
Consolidated Entity Excluding Variable Interest Entities (VIE) [Member] | Maximum [Member]
Related Party Transaction [Line Items]
Cash payments for consulting services related to the operations of the business and a noncompete arrangement	100,000	$ 100,000	100,000	$ 100,000
ADS Mexicana [Member]
Related Party Transaction [Line Items]
Outstanding letters of credit	$ 2,700,000		$ 2,700,000			$ 6,900,000
ADS Mexicana [Member] | Credit Facility Arrangement with Scotia Bank [Member]
Related Party Transaction [Line Items]
Amount borrowed under revolving credit facility							$ 3,900,000	$ 3,000,000
Interest rate for the loaned amount							4.81%	2.15%
BaySaver [Member]
Related Party Transaction [Line Items]
Company's ownership percentage	65.00%		65.00%

Debt - Additional Information (

Debt - Additional Information (Detail) - USD ($)	1 Months Ended
	Jun. 30, 2016	Sep. 30, 2016	Mar. 31, 2016
Debt Instrument [Line Items]
Unamortized debt issuance costs		$ 2,429,000	$ 3,131,000
Security Agreement for Financing Equipment [Member] | Maximum [Member]
Debt Instrument [Line Items]
Revolving credit facility	$ 4,500,000
Equipment Notes [Member]
Debt Instrument [Line Items]
Equipment notes	$ 3,200,000
Average fixed interest rate	2.58%
Amortization period of the principal amount	5 years

Debt - Long-Term Debt (Detail)

Debt - Long-Term Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Mar. 31, 2016	Nov. 11, 2015
Debt Instrument [Line Items]
Total	$ 351,638	$ 351,215
Total	351,638	351,215
Unamortized debt issuance costs	(2,429)	(3,131)
Current maturities	(36,497)	(35,870)
Long-term debt obligation	312,712	312,214
Equipment Financing [Member]
Debt Instrument [Line Items]
Revolving credit facility	3,153
ADS [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility	191,000	166,000
ADS Mexicana [Member]
Debt Instrument [Line Items]
Revolving credit facility	2,700		$ 6,900
Term Note [Member]
Debt Instrument [Line Items]
Term Note	77,500	82,500
Senior Notes Payable [Member]
Debt Instrument [Line Items]
Senior notes	75,000	100,000
Industrial Revenue Bonds [Member]
Debt Instrument [Line Items]
Industrial revenue bonds	$ 2,285	$ 2,715

Derivative Transactions - Sched

Derivative Transactions - Schedule of Cash Settlements and Losses and (Gains) on Mark-to-Market Adjustments for Changes in Fair Value of Derivative Contracts (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Derivatives, Fair Value [Line Items]
Total unrealized mark-to-market (gains) losses	$ (4,153)	$ 5,773	$ (9,060)	$ 9,534
Total realized losses	2,290	3,691	6,068	6,465
Propylene Swaps [Member]
Derivatives, Fair Value [Line Items]
Total unrealized mark-to-market (gains) losses	(3,334)	4,496	(6,647)	9,559
Total realized losses	1,611	2,965	4,683	5,401
Diesel Fuel Option Collars [Member]
Derivatives, Fair Value [Line Items]
Total unrealized mark-to-market (gains) losses	(689)	1,348	(2,161)	90
Total realized losses	679	764	1,385	1,102
Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Total unrealized mark-to-market (gains) losses	$ (130)	(71)	$ (252)	(115)
Foreign Exchange Forward Contracts [Member]
Derivatives, Fair Value [Line Items]
Total realized losses		$ (38)		$ (38)

Derivative Transactions - Addit

Derivative Transactions - Additional Information (Detail) - (Gain) Loss On Derivative Instruments And Other (Income) Expense, Net [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Derivatives, Fair Value [Line Items]
Other non-operating income		$ 0.3	$ 1.8	$ 0.2
Other non-operating expense	$ 0.1

Derivative Transactions - Summa

Derivative Transactions - Summary of Fair Values for Various Derivatives (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Mar. 31, 2016
Interest Rate Swaps [Member] | Other Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
(Liability)		$ (252)
Diesel Fuel Option Collars and Swaps [Member] | Receivables [Member]
Derivatives, Fair Value [Line Items]
Asset	$ 208
Diesel Fuel Option Collars and Swaps [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Asset	66	11
Diesel Fuel Option Collars and Swaps [Member] | Other Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
(Liability)	(664)	(2,609)
Diesel Fuel Option Collars and Swaps [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
(Liability)	(53)	(6)
Propylene Swaps [Member] | Other Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
(Liability)	$ (1,380)	$ (8,027)

Commitments and Contingencies (

Commitments and Contingencies (Purchase Commitments) - Additional Information (Detail) - Inventory [Member]	6 Months Ended
	Sep. 30, 2016USD ($)
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Total purchase commitment	$ 6,100,000
Purchase contracts period range, start	1 month
Purchase contracts period range, end	12 months

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail)	6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Effective income tax rate	39.80%	31.30%
Federal statutory rate	35.00%

Stock-based Compensation Expens

Stock-based Compensation Expense - Stock-based Compensation Expense (Benefit) Recognized in Condensed Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	$ (2,908)	$ 1,170	$ 6,112	$ 2,212
Cost of Goods Sold [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	(100)
Selling Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	(100)		200
General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation expense	$ (2,708)	$ 1,170	$ 5,912	$ 2,212

Stock-Based Compensation (Stock

Stock-Based Compensation (Stock Options) - Additional Information (Detail) - Employee Stock Options [Member]	6 Months Ended
	Sep. 30, 2016Installment
2013 Stock Option Plan [Member] | Management [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards, expiration period	10 years
Stock awards, number of annual installments for vesting	5
2013 Stock Option Plan [Member] | Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards, expiration period	10 years
Stock-based awards, vesting period	4 years
2000 Stock Option Plan [Member] | Management [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards, expiration period	10 years
Stock awards, number of annual installments for vesting	3

Stock-Based Compensation - Sche

Stock-Based Compensation - Schedule of Estimate Fair Value of Stock Options Granted (Detail) - Employee Stock Options [Member] - $ / shares	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected stock price volatility, minimum	29.50%	28.90%	29.50%	28.90%
Expected stock price volatility, maximum	35.90%	45.10%	35.90%	45.10%
Risk-free interest rate, minimum	0.70%	0.10%	0.70%	0.10%
Risk-free interest rate, maximum	1.30%	1.80%	1.30%	1.80%
Dividend yield	1.00%	0.70%	1.00%	0.70%
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock price	$ 22	$ 26.35	$ 22	$ 26.35
Weighted-average expected option life (years)	3 months 18 days	3 months 18 days	3 months 18 days	3 months 18 days
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock price	$ 28.17	$ 33.03	$ 28.17	$ 33.03
Weighted-average expected option life (years)	5 years 8 months 12 days	6 years 8 months 12 days	5 years 8 months 12 days	6 years 8 months 12 days

Net Income Per Share - Summary

Net Income Per Share - Summary of Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
NET INCOME PER SHARE-BASIC:
Net income attributable to ADS	$ 23,734	$ 12,346	$ 42,007	$ 24,040
Accretion of Redeemable noncontrolling interest	(380)	(257)	(742)	(257)
Dividends to Redeemable convertible preferred stockholders	(415)	(362)	(840)	(733)
Dividends paid to unvested restricted stockholders	(24)	(6)	(54)	(12)
Net income available to common stockholders and participating securities	22,915	11,721	40,371	23,038
Undistributed income allocated to participating securities	(2,040)	(980)	(3,563)	(1,949)
Net income available to common stockholders - Basic	$ 20,875	$ 10,741	$ 36,808	$ 21,089
Weighted average number of common shares outstanding - Basic	54,429	53,882	54,250	53,753
Net income per common share - Basic	$ 0.38	$ 0.20	$ 0.68	$ 0.39
NET INCOME PER SHARE-DILUTED:
Net income available to common stockholders - Diluted	$ 20,875	$ 10,741	$ 36,808	$ 21,089
Weighted average number of common shares outstanding - Basic	54,429	53,882	54,250	53,753
Assumed exercise of stock options	847	1,312	865	1,340
Weighted average number of common shares outstanding - Diluted	55,276	55,194	55,115	55,093
Net income per common share - Diluted	$ 0.38	$ 0.19	$ 0.67	$ 0.38
Potentially dilutive securities excluded as anti-dilutive	6,264	6,476	6,355	6,583

Business Segments Information -

Business Segments Information - Additional Information (Detail)	6 Months Ended
	Sep. 30, 2016Segment
Segment Reporting [Abstract]
Number of reportable segments	2
Number of operating segments	2

Business Segments Information49

Business Segments Information - Schedule of Revenue from Reportable Segments by Product Type (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Total Net sales	$ 360,785	$ 383,329	$ 718,361	$ 732,453
Domestic [Member]
Segment Reporting Information [Line Items]
Total Net sales	311,773	327,300	624,536	625,466
Domestic [Member] | Pipe [Member]
Segment Reporting Information [Line Items]
Total Net sales	222,026	238,291	445,336	458,826
Domestic [Member] | Allied Products [Member]
Segment Reporting Information [Line Items]
Total Net sales	89,747	89,009	179,200	166,640
International Segment [Member]
Segment Reporting Information [Line Items]
Total Net sales	49,012	56,029	93,825	106,987
International Segment [Member] | Pipe [Member]
Segment Reporting Information [Line Items]
Total Net sales	38,910	44,542	73,282	86,917
International Segment [Member] | Allied Products [Member]
Segment Reporting Information [Line Items]
Total Net sales	$ 10,102	$ 11,487	$ 20,543	$ 20,070

Business Segments Information50

Business Segments Information - Schedule of Additional Financial Information Attributable to Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Mar. 31, 2016
Segment Reporting Information [Line Items]
Net sales	$ 360,785	$ 383,329	$ 718,361	$ 732,453
Gross profit	90,512	86,529	187,118	161,006
Segment Adjusted EBITDA	65,601	63,737	137,409	116,185
Interest expense	4,546	4,947	9,330	9,233
Income tax expense (benefit)	15,348	5,187	29,542	13,066
Depreciation and amortization	18,010	17,367	36,036	34,751
Equity in net income (loss) of unconsolidated affiliates	(815)	(372)	(911)	(18)
Capital expenditures	11,201	9,999	23,796	21,534
Investments in unconsolidated affiliates	12,551		12,551		$ 13,188
Total identifiable assets	1,054,879		1,054,879		1,037,316
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total identifiable assets	(13,886)		(13,886)		(59,784)
Domestic [Member]
Segment Reporting Information [Line Items]
Net sales	311,773	327,300	624,536	625,466
Gross profit	79,736	76,131	167,462	137,820
Segment Adjusted EBITDA	57,114	55,443	121,754	96,412
Interest expense	4,436	4,901	9,109	8,938
Income tax expense (benefit)	13,824	6,703	25,977	13,529
Depreciation and amortization	15,829	15,243	31,507	30,405
Equity in net income (loss) of unconsolidated affiliates	(44)	(12)	(27)	324
Capital expenditures	10,496	8,028	21,991	17,812
Investments in unconsolidated affiliates	2,905		2,905		2,932
Total identifiable assets	920,835		920,835		949,286
International Segment [Member]
Segment Reporting Information [Line Items]
Net sales	49,012	56,029	93,825	106,987
Gross profit	10,776	10,398	19,656	23,186
Segment Adjusted EBITDA	8,487	8,294	15,655	19,773
Interest expense	110	46	221	295
Income tax expense (benefit)	1,524	(1,516)	3,565	(463)
Depreciation and amortization	2,181	2,124	4,529	4,346
Equity in net income (loss) of unconsolidated affiliates	(771)	(360)	(884)	(342)
Capital expenditures	705	$ 1,971	1,805	$ 3,722
Investments in unconsolidated affiliates	9,646		9,646		10,256
Total identifiable assets	$ 147,930		$ 147,930		$ 147,814

Business Segments Information51

Business Segments Information - Schedule of Reconciliation of Segment Adjusted EBITDA to Net Income (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net income attributable to ADS	$ 23,734	$ 12,346	$ 42,007	$ 24,040
Interest expense	4,546	4,947	9,330	9,233
Income tax expense (benefit)	15,348	5,187	29,542	13,066
Derivative fair value adjustments	(4,153)	5,773	(9,060)	9,534
Loss (gain) on disposal of assets or businesses	737	295	939	1,161
Stock-based compensation (benefit) expense	(2,908)	1,170	6,112	2,212
Domestic [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net income attributable to ADS	21,049	8,641	36,471	14,221
Depreciation and amortization	15,829	15,243	31,507	30,405
Interest expense	4,436	4,901	9,109	8,938
Income tax expense (benefit)	13,824	6,703	25,977	13,529
Segment EBITDA	55,138	35,488	103,064	67,093
Derivative fair value adjustments	(4,153)	5,784	(9,060)	9,506
Loss (gain) on disposal of assets or businesses	512	289	782	1,341
Unconsolidated affiliates interest, tax, depreciation and amortization	272	260	551	546
Contingent consideration remeasurement	33	45	57	100
Stock-based compensation (benefit) expense	(2,908)	1,170	6,112	2,212
ESOP deferred compensation	2,368	3,125	5,105	6,250
Expense related to executive termination payments	79	82	158	164
Loss related to BaySaver acquisition		490		490
Restatement-related costs	5,773	8,710	14,985	8,710
Segment Adjusted EBITDA	57,114	55,443	121,754	96,412
International Segment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net income attributable to ADS	3,232	7,287	7,231	14,489
Depreciation and amortization	2,181	2,124	4,529	4,346
Interest expense	110	46	221	295
Income tax expense (benefit)	1,524	(1,516)	3,565	(463)
Segment EBITDA	7,047	7,941	15,546	18,667
Derivative fair value adjustments		(11)		28
Foreign currency transaction (gains) losses	685	(151)	(1,077)	166
Loss (gain) on disposal of assets or businesses	225	6	157	(180)
Unconsolidated affiliates interest, tax, depreciation and amortization	530	509	1,029	1,092
Segment Adjusted EBITDA	$ 8,487	$ 8,294	$ 15,655	$ 19,773

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail)	3 Months Ended	6 Months Ended
	Dec. 31, 2016USD ($)Facilities$ / shares	Sep. 30, 2016USD ($)	Mar. 31, 2017$ / shares	Mar. 31, 2016USD ($)	Nov. 11, 2015USD ($)
ADS Mexicana [Member]
Subsequent Event [Line Items]
Intercompany loans outstanding		$ 2,700,000			$ 6,900,000
South American Joint Venture [Member]
Subsequent Event [Line Items]
Intercompany loans outstanding		$ 17,100,000		$ 16,700,000
Third Quarter [Member]
Subsequent Event [Line Items]
Dividend payable date		Dec. 15, 2016
Dividend payable, date of record		Dec. 1, 2016
Preferred Stock [Member] | Scenario, Forecast [Member]
Subsequent Event [Line Items]
Cash dividend declared | $ / shares			$ 0.0195
Subsequent Event [Member]
Subsequent Event [Line Items]
Number of manufacturing facilities related to assets with shortened useful life | Facilities	3
Number of manufacturing facilities closed | Facilities	1
Subsequent Event [Member] | South American Joint Venture [Member]
Subsequent Event [Line Items]
Inventory destroyed by fire	$ 1,100,000
Subsequent Event [Member] | Maximum [Member]
Subsequent Event [Line Items]
Accelerated depreciation expense	$ 2,000,000
Subsequent Event [Member] | Common Stock [Member]
Subsequent Event [Line Items]
Cash dividend declared | $ / shares	$ 0.06