Advanced Drainage Systems (WMS) 10-Q 31 May 16 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Sep. 30, 2015	Apr. 29, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2015
Document Fiscal Year Focus	2,015
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		54,446,402

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Mar. 31, 2015
Current assets:
Cash	$ 3,481	$ 3,623
Receivables (less allowance for doubtful accounts of $4,540 and $5,423, respectively)	254,583	154,294
Inventories	220,257	269,842
Deferred income taxes and other current assets	22,538	18,972
Total current assets	500,859	446,731
Property, plant and equipment, net	389,826	377,067
Other assets:
Goodwill	100,483	98,679
Intangible assets, net	63,811	58,055
Other assets	51,656	61,167
Total assets	1,106,635	1,041,699
Current liabilities:
Current maturities of debt obligations	35,850	9,580
Current maturities of capital lease obligations	19,292	15,731
Accounts payable	87,020	111,893
Other accrued liabilities	80,690	54,349
Accrued income taxes	5,607	6,041
Total current liabilities	228,459	197,594
Long-term debt obligation	389,685	390,315
Long-term capital lease obligations	57,586	45,503
Deferred tax liabilities	61,842	65,088
Other liabilities	31,877	28,602
Total liabilities	$ 769,449	$ 727,102
Commitments and contingencies (see Note 9)
Mezzanine equity:
Redeemable convertible preferred stock: $0.01 par value; 47,070 shares authorized; 44,170 shares issued; 25,064 and 25,639 shares outstanding, respectively	$ 313,302	$ 320,490
Deferred compensation - unearned ESOP shares	(208,926)	(212,469)
Redeemable noncontrolling interest in subsidiaries	6,698
Total mezzanine equity	111,074	108,021
Stockholders' equity:
Common stock: $0.01 par value; 1,000,000 shares authorized; 153,560 shares issued; 54,107 and 53,522 shares outstanding, respectively	12,393	12,393
Paid-in capital	710,341	700,977
Common stock in treasury, at cost	(442,418)	(445,065)
Accumulated other comprehensive loss	(23,683)	(15,521)
Retained deficit	(47,055)	(62,621)
Total ADS stockholders' equity	209,578	190,163
Noncontrolling interest in subsidiaries	16,534	16,413
Total stockholders' equity	226,112	206,576
Total liabilities, mezzanine equity and stockholders' equity	$ 1,106,635	$ 1,041,699

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015	Mar. 31, 2015
Allowance for doubtful accounts	$ 4,540	$ 5,423
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	54,107,000	53,522,000
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	25,064,000	25,639,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Net sales	$ 383,329	$ 366,714	$ 732,453	$ 693,148
Cost of goods sold	299,594	296,951	576,132	562,527
Gross profit	83,735	69,763	156,321	130,621
Operating expenses:
Selling	22,594	20,240	43,821	39,792
General and administrative	25,145	13,843	43,431	29,641
Loss on disposal of assets or businesses	295	281	1,161	345
Intangible amortization	2,341	2,610	4,867	5,223
Income from operations	33,360	32,789	63,041	55,620
Other expense:
Interest expense	4,947	5,044	9,233	10,095
Derivative losses (gains) and other expense (income), net	9,192	(240)	15,772	(456)
Income before income taxes	19,221	27,985	38,036	45,981
Income tax expense	4,368	8,926	11,739	16,819
Equity in net loss of unconsolidated affiliates	372	62	18	724
Net income	14,481	18,997	26,279	28,438
Less net income attributable to noncontrolling interest	3,582	2,153	4,670	3,028
Net income attributable to ADS	10,899	16,844	21,609	25,410
Accretion of Redeemable noncontrolling interest	(257)		(257)
Change in fair value of Redeemable convertible preferred stock		7,319		(11,054)
Dividends to Redeemable convertible preferred stockholders	(362)	(37)	(733)	(75)
Dividends paid to unvested restricted stockholders	(6)		(12)
Net income available to common stockholders and participating securities	10,274	24,126	20,607	14,281
Undistributed income allocated to participating securities	(822)	(2,768)	(1,680)	(1,702)
Net income available to common stockholders	$ 9,452	$ 21,358	$ 18,927	$ 12,579
Weighted average common shares outstanding:
Basic	53,882	51,518	53,753	49,538
Diluted	54,282	56,463	60,694	52,198
Net income per share:
Basic	$ 0.18	$ 0.41	$ 0.35	$ 0.25
Diluted	0.17	$ 0.41	0.34	$ 0.25
Cash dividends declared per share	$ 0.05		$ 0.10

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 14,481	$ 18,997	$ 26,279	$ 28,438
Other comprehensive loss:
Currency translation	(10,979)	(3,591)	(10,470)	(3,432)
Total other comprehensive loss	(10,979)	(3,591)	(10,470)	(3,432)
Comprehensive income	3,502	15,406	15,809	25,006
Less other comprehensive loss attributable to noncontrolling interest, net of tax	(1,726)	(761)	(2,308)	(907)
Less net income attributable to noncontrolling interest	3,582	2,153	4,670	3,028
Total comprehensive income attributable to ADS	$ 1,646	$ 14,014	$ 13,447	$ 22,885

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Statement of Cash Flows [Abstract]
Cash Flows from Operating Activities	$ 16,924	$ 14,906
Cash Flows from Investing Activities
Capital expenditures	(20,197)	(15,596)
Proceeds from sale of assets or businesses		156
Cash paid for acquisitions, net of cash acquired	(3,188)
Investment in unconsolidated affiliate		(7,566)
Additions of capitalized software	(1,337)	(441)
Proceeds from note receivable to related party	3,854
Issuance of note receivable to related party	(3,854)
Other investing activities	(378)	(525)
Net cash used in investing activities	(25,100)	(23,972)
Cash Flows from Financing Activities
Proceeds from Revolving Credit Facility	252,800	174,760
Payments on Revolving Credit Facility	(223,000)	(227,000)
Payments on term loan	(3,750)	(2,500)
Proceeds from notes, mortgages and other debt	6,682
Payments of notes, mortgages, and other debt	(7,092)	(1,665)
Payments on capital lease obligation	(10,247)	(5,467)
Payments for deferred initial public offering costs		(4,458)
Proceeds from initial public offering of common stock, net of underwriter discounts and commissions		79,131
Cash dividends paid	(8,173)	(1,007)
Other financing activities	454	152
Net cash provided by financing activities	7,674	11,946
Effect of exchange rate changes on cash and cash equivalents	360	(230)
Net change in cash	(142)	2,650
Cash at beginning of period	3,623	3,931
Cash at end of period	$ 3,481	$ 6,581

Condensed Consolidated Stateme7

Condensed Consolidated Statement of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Common Stock in Treasury [Member]	Paid In Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earning (Deficit) [Member]	Total ADS Stockholders' Equity [Member]	Non-controlling Interest in Subsidiaries [Member]
Beginning Balance, Value at Mar. 31, 2014	$ (414,702)	$ 11,957	$ (448,439)	$ 12,438	$ (6,830)	$ (2,412)	$ (433,286)	$ 18,584
Net income	28,438					25,410	25,410	3,028
Other comprehensive loss	(3,432)				(2,525)		(2,525)	(907)
Dividend paid to noncontrolling interest holder	(1,007)							(1,007)
Compensation	(1,339)			(1,339)			(1,339)
Exercise of common stock options	523		349	174			523
Redemption of common shares to exercise stock options			(93)	93
Stock-based compensation	1,778			1,778			1,778
Restricted stock awards	1,998		509	1,489			1,998
Initial Public Offering (IPO)	72,298	53		72,245			72,298
Reclassification of liability classified stock options upon IPO	1,522			1,522			1,522
Adjustments to Redeemable convertible preferred stock fair value measurement	(11,054)			(13,077)		2,023	(11,054)
Adjustments to Redeemable common stock fair value measurement	(65,921)					(65,921)	(65,921)
Termination of redemption feature upon IPO	615,040	383		614,657			615,040
Ending Balance, Value at Sep. 30, 2014	224,142	$ 12,393	$ (447,674)	689,980	(9,355)	(40,900)	204,444	19,698
Beginning Balance, Shares at Mar. 31, 2014		109,951	100,810
Exercise of common stock options			(78)
Redemption of common shares to exercise stock options			7
Restricted stock awards			(114)
Initial Public Offering (IPO)		5,289
Termination of redemption feature upon IPO		38,320
Ending Balance, Shares at Sep. 30, 2014		153,560	100,625
Beginning Balance, Value at Mar. 31, 2015	206,576	$ 12,393	$ (445,065)	700,977	(15,521)	(62,621)	190,163	16,413
Net income	26,168					21,609	21,609	4,559
Other comprehensive loss	(10,470)				(8,162)		(8,162)	(2,308)
Redeemable convertible preferred stock dividends	(657)					(657)	(657)
Common stock dividend	(5,386)					(5,386)	(5,386)
Dividend paid to noncontrolling interest holder	(2,130)							(2,130)
Compensation	2,707			2,707			2,707
Exercise of common stock options	825		390	435			825
Stock-based compensation	887			887			887
Restricted stock awards	562		291	271			562
ESOP distributions in common stock	7,188		1,966	5,222			7,188
Accretion of Redeemable noncontrolling interest	(158)			(158)			(158)
Ending Balance, Value at Sep. 30, 2015	$ 226,112	$ 12,393	$ (442,418)	$ 710,341	$ (23,683)	$ (47,055)	$ 209,578	$ 16,534
Beginning Balance, Shares at Mar. 31, 2015		153,560	100,038
Exercise of common stock options			(77)
Restricted stock awards			(66)
ESOP distributions in common stock			(442)
Ending Balance, Shares at Sep. 30, 2015		153,560	99,453

Condensed Consolidated Stateme8

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

Condensed Consolidated Stateme9

Condensed Consolidated Statement of Mezzanine Equity - USD ($) shares in Thousands, $ in Thousands	Total	Redeemable Common Stock [Member]	Redeemable Convertible Preferred Stock [Member]	Deferred Compensation - Unearned ESOP Shares [Member]	Redeemable Non-controlling Interest in Subsidiaries [Member]
Beginning Balance, Value at Mar. 31, 2014	$ 642,951	$ 549,119	$ 291,720	$ (197,888)
Compensation	6,713			6,713
Adjustments to redeemable convertible preferred stock fair value measurement	11,054		34,903	(23,849)
Adjustments to redeemable common stock fair value measurement	65,921	65,921
Termination of redemption feature upon IPO	(615,040)	$ (615,040)
Ending Balance, Value at Sep. 30, 2014	111,599		$ 326,623	$ (215,024)
Beginning Balance, Shares at Mar. 31, 2014		38,320	26,129	17,727
Compensation				(537)
Termination of redemption feature upon IPO		(38,320)
Ending Balance, Shares at Sep. 30, 2014			26,129	17,190
Beginning Balance, Value at Mar. 31, 2015	108,021		$ 320,490	$ (212,469)
Net income	111				$ 111
Compensation	3,543			3,543
ESOP distributions 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	$ 111,074		$ 313,302	$ (208,926)	$ 6,698
Beginning Balance, Shares at Mar. 31, 2015			25,639	16,990
Compensation				(283)
ESOP distributions in common stock			(575)
Ending Balance, Shares at Sep. 30, 2015			25,064	16,707

Background and Summary of Signi

Background and Summary of Significant Accounting Policies	6 Months Ended
	Sep. 30, 2015
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”, the “Company”, “we”, “us” and “our”), incorporated in Delaware, designs, manufactures and markets high performance thermoplastic corrugated pipe and related water management products, primarily in North and South America and Europe. Our 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. 2014 Initial Public Offering (“IPO”) On July 11, 2014, in anticipation of the IPO, we executed a 4.707-for-one split of our common and our preferred stock. The effect of the stock split on outstanding shares and earnings per share has been retroactively applied to all periods presented. On July 25, 2014, we completed the IPO of our common stock, which resulted in the sale by the Company of 5,289 shares, bringing the total number of shares issued and outstanding as of July 25, 2014 to 52,881. We received total proceeds from the IPO of $79,131 after excluding underwriter discounts and commissions of $5,501, based upon the price to the public of $16.00 per share. After deducting other offering expenses, we used the net proceeds to reduce the outstanding indebtedness under the revolving portion of our credit facility. The common stock is listed on the New York Stock Exchange (“NYSE”) under the symbol “WMS.” On August 22, 2014, an additional 600 shares of common stock were sold by certain selling stockholders of the Company as a result of the partial exercise by the underwriters of the over-allotment option granted by the selling stockholders to the underwriters in connection with the IPO. The shares were sold at the public offering price of $16.00 per share. The Company did not receive any proceeds from the sale of such additional shares. 2014 Secondary Public Offering On December 9, 2014, we completed a secondary public offering of our common stock, which resulted in the sale of 10,000 shares of common stock by a certain selling stockholder of the Company at a public offering price of $21.25. We did not receive any proceeds from the sale of shares by the selling stockholder. On December 15, 2014, an additional 1,500 shares of common stock were sold by a certain selling stockholder of the Company as a result of the full exercise by the underwriters of the over-allotment option granted by the selling stockholder to the underwriters in connection with the secondary public offering. The shares were sold at the public offering price of $21.25 per share. The Company did not receive any proceeds from the sale of such additional shares. 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, 2015 was derived from audited financial statements. In our opinion, the accompanying unaudited condensed consolidated financial statements contain all adjustments, of a normal recurring nature, necessary to present fairly its financial position as of September 30, 2015 and the results of operations for the three and six months ended September 30, 2015 and 2014 and cash flows for the six months ended September 30, 2015 and 2014. The interim condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements, including the notes thereto, filed in our Annual Report on Form 10-K for the year ended March 31, 2015 (“Fiscal 2015 Form 10-K”). Principles of Consolidation Our condensed consolidated financial statements include the Company, our wholly-owned subsidiaries, our majority-owned subsidiaries, including ADS Mexicana, S.A. de C.V. (together with its affiliate ADS Corporativo, S.A. de C.V., “ADS Mexicana”) and BaySaver Technologies, LLC (“BaySaver”), and variable interest entities (“VIEs”) of which we are the primary beneficiary. We use the equity method of accounting for equity investments where we exercise significant influence but do not hold a controlling financial interest. Such investments are recorded in Other assets in our Condensed Consolidated Balance Sheets and the related equity earnings from these investments are included in Equity in net loss of unconsolidated affiliates in our Condensed Consolidated Statements of Operations. All intercompany balances and transactions have been eliminated in consolidation. Recent Accounting Pronouncements Stock-Based Compensation With the exception of the pronouncement described above, there have been no new accounting pronouncements issued since the filing of our Fiscal 2015 Form 10-K that have significance, or potential significance, to our consolidated financial statements.

Acquisitions

Acquisitions	6 Months Ended
	Sep. 30, 2015
Business Combinations [Abstract]
Acquisitions	2. ACQUISITIONS On July 17, 2015, ADS Ventures, Inc. (“ADS/V”), a wholly-owned subsidiary of the Company, acquired an additional 10% of the issued and outstanding membership interests in BaySaver, increasing the Company’s total ownership interest in BaySaver to 65%, for a purchase price of $3,200, plus contingent consideration with an initial estimated fair value of $750. Concurrent with our purchase of the additional membership investment, the BaySaver joint venture agreement was amended to modify the voting rights from an equal vote for each member to a vote based upon the ownership interest. We have accounted for this transaction as a business combination with BaySaver being consolidated into our financial statements after July 17, 2015. As we had accounted for our investment in BaySaver prior to the purchase of the additional 10% membership interest under the equity method of accounting, we accounted for this transaction as a step acquisition and recognized a loss of $490 on remeasurement to fair value of our previously held investment. The loss is included in Derivative losses (gains) and other expense (income), net in our Condensed Consolidated Statements of Operations. The fair value of our BaySaver investment immediately before the July 17, 2015 acquisition was measured based on a combination of the discounted cash flow and guideline public company valuation methods and involves significant unobservable inputs (Level 3). These inputs include projected sales, margin, required rate of return and tax rate for the discounted cash flow method, as well as implied pricing multiples, and guideline public company group for the guideline public company method. The purchase price was determined as follows: (Amounts in thousands) Acquisition-date fair value of our prior equity interest $ 4,220 Acquisition-date fair value of noncontrolling interest 6,330 Cash paid at acquisition date 3,200 Fair value of contingent consideration 750 Total purchase price $ 14,500 The preliminary purchase price has been allocated to the estimated fair values of acquired tangible and intangible assets, assumed liabilities and goodwill. The preliminary fair value of identifiable intangible assets has been determined primarily using the income approach, which involves significant unobservable inputs (Level 3 inputs). These inputs include projected sales, margin, required rate of return and tax rate, as well as an estimated royalty rate in the cases of the developed technology and trade name and trademark intangibles. The developed technology and trade name and trademark intangibles are valued using a relief-from-royalty method. Redeemable noncontrolling interest in subsidiaries is classified as mezzanine equity in our Condensed Consolidated Balance Sheets due to a put option held by the joint venture partner which may be exercised on or after April 1, 2017. The redeemable noncontrolling interest balance will be accreted to the redemption value using the effective interest method until April 1, 2017. The excess of the preliminary purchase price over the fair value of the net assets acquired of $2,495 was allocated to goodwill, assigned to the Domestic segment, and consists primarily of the acquired workforce and sales and cost synergies the two companies anticipate realizing as a combined company. None of the goodwill is deductible for tax purposes. Certain estimated values for the acquisition, including intangible assets, goodwill and deferred taxes are not yet finalized. The preliminary purchase price allocation is as follows: (Amounts in thousands) Cash $ 12 Other current assets 2,262 Property, plant and equipment 164 Goodwill 2,495 Intangible assets 10,800 Other assets 152 Current liabilities (1,385 ) Total purchase price $ 14,500 The acquired identifiable intangible assets represent customer relationships of $5,400, developed technology of $4,000 and trade name and trademark of $1,400, each of which have an estimated 10-year useful life. Transaction costs were immaterial. The net sales and income before income taxes of BaySaver since the acquisition date included in our Condensed Consolidated Statements of Operations were $3,456 and $316, respectively. The following table contains unaudited pro forma Consolidated Statements of Operations information assuming the acquisition occurred on April 1, 2014 and includes adjustments for amortization of intangibles, and interest expense and our prior equity method accounting for BaySaver. This pro forma information is presented for illustrative purposes only and is not indicative of what actual results would have been if the acquisitions had taken place on April 1, 2014 or of future results. The unaudited pro forma consolidated results are not projections of future results of operations of the combined company nor do they reflect the expected realization of any cost savings or synergies associated with the acquisition. (Amounts in thousands) Six months ended 2015 2014 Net sales $ 736,052 $ 698,937 Net income attributable to ADS $ 21,647 $ 25,437 Unaudited pro forma net income attributable to ADS has been calculated after adjusting the combined results of the Company to reflect additional intangible asset amortization expense, net of related income taxes and amounts related to the noncontrolling interest, of $94 and $167, additional interest expense, net of related income taxes and amounts related to the noncontrolling interest, of $10 and $17, and the impact of our prior equity method accounting, net of related income tax, of $109 and $286 for the six months ended September 30, 2015 and 2014, respectively.

Inventories

Inventories	6 Months Ended
	Sep. 30, 2015
Inventory Disclosure [Abstract]
Inventories	3. INVENTORIES Inventories as of September 30, 2015 and March 31, 2015 consisted of the following: (Amounts in thousands) September 30, March 31, Raw materials $ 48,010 $ 50,198 Finished goods 172,247 219,644 Total inventories $ 220,257 $ 269,842 We had no work-in-process inventories as of September 30, 2015 and March 31, 2015.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	4. GOODWILL AND INTANGIBLE ASSETS Goodwill The change in carrying amount of goodwill by reportable segment is as follows: (Amounts in thousands) Domestic International Total Balance at March 31, 2015 $ 87,507 $ 11,172 $ 98,679 Acquisition 2,495 — 2,495 Currency translation — (691 ) (691 ) Balance at September 30, 2015 $ 90,002 $ 10,481 $ 100,483 Intangible Assets Intangible assets as of September 30, 2015 and March 31, 2015 consisted of the following: September 30, 2015 March 31, 2015 (Amounts in thousands) Gross Accumulated Net Gross Accumulated Net Definite-lived intangible assets Developed technology $ 44,579 $ (28,113 ) $ 16,466 $ 40,579 $ (26,405 ) $ 14,174 Customer relationships 40,601 (20,576 ) 20,025 43,167 (26,113 ) 17,054 Patents 6,847 (3,858 ) 2,989 6,547 (3,550 ) 2,997 Non-compete and other contractual agreements 1,237 (710 ) 527 1,365 (691 ) 674 Trademarks and tradenames 15,477 (3,607 ) 11,870 14,248 (3,051 ) 11,197 Total definite-lived intangible assets 108,741 (56,864 ) 51,877 105,906 (59,810 ) 46,096 Indefinite-lived intangible assets Trademarks 11,934 — 11,934 11,959 — 11,959 Total intangible assets $ 120,675 $ (56,864 ) $ 63,811 $ 117,865 $ (59,810 ) $ 58,055

Fair Value Measurement

Fair Value Measurement	6 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurement	5. 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, we are required to maximize the use of quoted market prices and minimize the use of unobservable inputs. The Company has not changed its valuation techniques used in measuring the fair value of any financial assets or liabilities during the periods presented. Our fair value estimates take into consideration the credit risk of both the Company and our counterparties. When active market quotes are not available for financial assets and liabilities, we use 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 our 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 September 30, 2015 and March 31, 2015 were as follows: September 30, 2015 (Amounts in thousands) Total Level 1 Level 2 Level 3 Liabilities: Derivative liability - interest rate swaps $ 622 $ — $ 622 $ — Derivative liability - diesel fuel contracts 2,930 — 2,930 — Derivative liability - propylene swaps 14,702 — 14,702 — Contingent consideration for acquisitions 2,869 — — 2,869 Total liabilities at fair value on a recurring basis $ 21,123 $ — $ 18,254 $ 2,869 March 31, 2015 (Amounts in thousands) Total Level 1 Level 2 Level 3 Assets: Derivative assets - currency forward contracts $ 28 $ — $ 28 $ — Total assets at fair value on a recurring basis $ 28 $ — $ 28 $ — Liabilities: Derivative liability - interest rate swaps $ 765 $ — $ 765 $ — Derivative liability - diesel fuel contracts 2,841 — 2,841 — Derivative liability - propylene swaps 5,142 — 5,142 — Contingent consideration for acquisitions 2,444 — — 2,444 Total liabilities at fair value on a recurring basis $ 11,192 $ — $ 8,748 $ 2,444 Changes in the fair value of recurring fair value measurements using significant unobservable inputs (Level 3) for the three and six months ended September 30, 2015 and 2014 were as follows: Three Months Ended (amounts in thousands) Contingent Balance at June 30, 2015 $ 2,285 Acquisition 750 Change in fair value 45 Payments of contingent consideration liability (211 ) Balance at September 30, 2015 $ 2,869 Three Months Ended September 30, 2014 (amounts in thousands) Contingent Redeemable Redeemable Deferred compensation ESOP shares Total Balance at June 30, 2014 $ 2,697 $ 659,431 $ 348,898 $ (233,106 ) $ 777,920 Allocation of ESOP shares to participants — — — 804 804 Change in fair value 20 (44,391 ) (22,275 ) 14,956 (51,690 ) Payments of contingent consideration liability (191 ) — — — (191 ) Transfer from Level 3 — (615,040 ) (326,623 ) 217,346 (724,317 ) Balance at September 30, 2014 $ 2,526 $ — $ — $ — $ 2,526 Six Months Ended (amounts in thousands) Contingent Balance at March 31, 2015 $ 2,444 Acquisition 750 Change in fair value 100 Payments of contingent consideration liability (425 ) Balance at September 30, 2015 $ 2,869 Six Months Ended September 30, 2014 (amounts in thousands) Contingent Redeemable Redeemable Deferred Total Balance at March 31, 2014 $ 2,898 $ 549,119 $ 291,720 $ (197,888 ) $ 645,849 Allocation of ESOP shares to participants — — — 4,391 4,391 Change in fair value 2 65,921 34,903 (23,849 ) 76,977 Payments of contingent consideration liability (374 ) — — — (374 ) Transfer from Level 3 — (615,040 ) (326,623 ) 217,346 (724,317 ) Balance at September 30, 2014 $ 2,526 $ — $ — $ — $ 2,526 For the six months ended September 30, 2014 our Redeemable common stock transferred out of Level 3, as these securities started actively trading on the NYSE during the second quarter of fiscal 2015. In addition, our Redeemable convertible preferred stock and Deferred compensation – unearned ESOP shares were reclassified from a recurring Level 3 fair value measurement to a non-recurring Level 3 fair value measurement as a result of the IPO. See Note 1. Background and Summary of Significant Accounting Policies for further information on the IPO. There were no further transfers in or out of Levels 1, 2 and 3 for the six months ended September 30, 2015 and 2014, respectively. Valuation of our Contingent Consideration for Acquisitions The fair values of the contingent consideration payables for prior period acquisitions were calculated with reference to the estimated future value of the Inserta Tee and FleXstorm businesses, which are based on a discounted cash flow model. The undiscounted value is discounted to the present value using a market discount rate. The fair value of the contingent consideration liability related to the BaySaver acquisition was calculated based on a discounted cash flow model, whereby the probability-weighted estimated future payment value is discounted to the present value using a market discount rate. The categorization of the framework used to price these liabilities is considered a Level 3, due to the subjective nature of the unobservable inputs used to determine the fair value. Valuation of our Redeemable Common Stock Prior to July 2014, the Company had certain shares of common stock outstanding allowing the holder to put its shares to us for cash. This Redeemable common stock was historically recorded at its fair value in the mezzanine equity section of our Condensed Consolidated Balance Sheets and changes in fair value were recorded in Retained earnings. Historically, the fair value of a share of common stock was determined by management by applying industry-appropriate multiples to EBITDA and performing a discounted cash flow analysis. Under the industry-appropriate multiples approach, to arrive at concluded multiples, we considered differences between the risk and return characteristics of ADS and the guideline companies. Under the discounted cash flow analysis, the cash flows expected to be generated by the Company were discounted to their present value equivalent using a rate of return that reflects the relative risk of an investment in ADS, as well as the time value of money. This return was an overall rate based upon the individual rates of return for invested capital (equity and interest-bearing debt). The return, known as the weighted average cost of capital (“WACC”), was calculated by weighting the required returns on interest-bearing debt and common stock in proportion to their estimated percentages in an expected capital structure. The WACC used was 11% as of March 31, 2014. An increase in the WACC would decrease the fair value of the Redeemable common stock. The categorization of the framework used to price this temporary equity was considered a Level 3, due to the subjective nature of the unobservable inputs used to determine the fair value. The redemption feature of our Redeemable common stock allowing the holder to put its shares to us for cash, as discussed in the previous paragraph, was not in effect upon effectiveness of the IPO on July 25, 2014. As a result, the Redeemable common stock was recorded as mezzanine equity at fair value through the effective date of the IPO and was subsequently reclassified at that fair value to stockholders’ equity. See Note 1. Background and Summary of Significant Accounting Policies for more information on the IPO. Nonrecurring Fair Value Measurements Valuation of our Redeemable Convertible Preferred Stock The Trustee of the Company’s ESOP has the ability to put the shares of our Redeemable convertible preferred stock to the Company. Prior to July 2014, our Redeemable convertible preferred stock was recorded at its fair value in the mezzanine equity section of our Condensed Consolidated Balance Sheets and changes in fair value were recorded in Retained earnings. Accordingly, we estimated the fair value of the Redeemable Convertible Preferred Stock through estimating the fair value of the Company’s common stock and applying certain adjustments including for the fair value of the total dividends to be received and assuming conversion of the Redeemable convertible preferred stock to common stock at the stated conversion ratio per our Certificate of Incorporation. The categorization of the framework used to price this temporary equity was considered a Level 3, due to the subjective nature of the unobservable inputs used to determine the fair value. Upon the effective date of the IPO, the redemption feature of our Redeemable convertible preferred stock allowing the Trustee of the Company’s ESOP to put shares to us for cash was no longer applicable. However, if our common stock, which our Redeemable convertible preferred stock may convert to, is no longer a “registration-type class of security” (e.g., in the event of a delisting), the option held by the Trustee, which granted it the ability to put the shares of our Redeemable convertible preferred stock to us, would then become applicable. Preferred securities that become redeemable upon a contingent event that is not solely within the control of the Company should be classified outside of permanent equity. As of September 30, 2015, the Company has determined that it is not probable that the redemption feature will become applicable. Since the Redeemable convertible preferred stock is not currently redeemable and it is not probable that the instrument will become redeemable, subsequent adjustment to fair value is not required. As such, the Redeemable convertible preferred stock was recorded to fair value at the effective date of the IPO on July 25, 2014 and will remain in mezzanine equity without further adjustment to carrying value unless it becomes probable that the redemption feature will become applicable. See Note 1. Background and Summary of Significant Accounting Policies for more information on the IPO. Valuation of our Goodwill and Indefinite Lived Intangible Assets Goodwill and indefinite lived intangible assets are tested for impairment annually as of March 31 or whenever events or changes in circumstances indicate the carrying value may be greater than fair value.

Related Party Transactions

Related Party Transactions	6 Months Ended
	Sep. 30, 2015
Related Party Transactions [Abstract]
Related Party Transactions	6. RELATED PARTY TRANSACTIONS ADS Mexicana ADS conducts business in Mexico and Central America through its joint venture 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, 2015 and 2014, 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. These cash payments totaled $37 and $100 for the three and six months ended September 30, 2015, respectively, and $94 and $169 for the three and six months ended September 30, 2014, respectively. Occasionally, ADS and ADS Mexicana jointly enter into agreements for pipe sales with their related parties which totaled $0 and $0 for the three and six months ended September 30, 2015, respectively, and $1,027 and $2,339 for the three and six months ended September 30, 2014, respectively. Outstanding receivables related to these sales were $516 and $1,005 as of September 30, 2015 and March 31, 2015, respectively. In April 2015, ADS Mexicana borrowed $3,000 under a revolving credit facility arrangement with Scotia Bank and loaned that amount to ADS, and such loan was repaid in May 2015. In June 2015, ADS Mexicana borrowed $3,854 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. 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. We are the guarantor of 100% of ADS Mexicana’s credit facility and our maximum potential payment under this guarantee totals $12,000. South American Joint Venture The Tuberias Tigre – ADS Limitada joint venture (“South American Joint Venture”) manufactures and sells HDPE corrugated pipe in the South American market. We are 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. Our maximum potential obligation under this guarantee totals $6,700 as of September 30, 2015. The maximum borrowings permitted under the South American Joint Venture’s credit facility are $19,000. 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 South American Joint Venture’s debt is for the life of the credit facility which matures on February 5, 2017. ADS does not anticipate any required contributions related to the balance of this credit facility. As of September 30, 2015 and March 31, 2015, the outstanding principal balance of the credit facility including letters of credit was $13,500 and $13,600, respectively. The weighted average interest rate as of September 30, 2015 was 3.25% on U.S. dollar denominated loans and 6.56% 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, ADS and South American Joint Venture jointly enter into agreements for pipe sales with their related parties which totaled $182 and $881 for the three and six months ended September 30, 2015, respectively, and $146 and $463 for the three and six months ended September 30, 2014, respectively. BaySaver 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 membership interests of BaySaver and consolidates BaySaver. 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 in immaterial amounts.

Debt

Debt	6 Months Ended
	Sep. 30, 2015
Debt Disclosure [Abstract]
Debt	7. DEBT Long-term debt as of September 30, 2015 and March 31, 2015 consisted of the following: (amounts in thousands) September 30, March 31, Bank Term Loans: Revolving Credit Facility - ADS $ 234,900 $ 205,100 Term Note 87,500 91,250 Senior Notes payable 100,000 100,000 Industrial revenue bonds 3,135 3,545 Total 425,535 399,895 Current maturities (35,850 ) (9,580 ) Long-term debt obligations $ 389,685 $ 390,315 ADS Mexicana Scotia Bank Revolving Credit Facility On December 11, 2014, our joint venture, ADS Mexicana, entered into a credit agreement with Scotia Bank. The credit agreement provides for revolving loans up to a maximum aggregate principal amount of $5,000. The proceeds of the revolving credit facility have primarily been used for short term investments and are available for working capital needs. The interest rates of the revolving credit facilities are determined by LIBOR rates, Tasa de Interes Interbancaria de Equilibrio (TIIE) or the Costos de Captacion rates, plus an applicable margin. The Scotia Bank revolving credit facility matures on December 11, 2017. The obligations under the revolving credit facility are not guaranteed by ADS. As of September 30, 2015, there was no outstanding principal drawn on the Scotia Bank revolving credit facility with $5,000 available to be drawn.

Derivative Transactions

Derivative Transactions	6 Months Ended
	Sep. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Transactions	8. 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 exchange rate fluctuations. For interest rate swaps, the difference between the spot rate and applicable base rate is recorded in interest expense. For collars, commodity swaps and foreign currency forward contracts, contract settlement gains and losses and gains and losses related to the mark-to-market adjustments for changes in fair value of the derivative contracts are recorded in the Condensed Consolidated Statements of Operations as Derivative losses (gains) and other expense (income), net. The Company recognized losses on mark-to-market adjustments for changes in fair value on derivative contracts of $5,773 and $67 for the three months ended September 30, 2015 and 2014, respectively, and $9,534 and $163 for the six months ended September 30, 2015 and 2014, respectively. The fair value of the derivatives are included in the Condensed Consolidated Balance Sheets at September 30, 2015 and March 31, 2015 as follows: September 30, 2015 Liabilities (Amounts in thousands) Other accrued Other liabilities Interest rate swaps $ (622 ) $ — Diesel fuel option collars and swaps (2,093 ) (837 ) Propylene swaps (11,934 ) (2,768 ) March 31, 2015 Assets Liabilities (Amounts in thousands) Receivables Other assets Other accrued Other Interest rate swaps $ — $ — $ (150 ) $ (615 ) Foreign exchange forward contracts 28 — — — Diesel fuel option collars and swaps — — (1,883 ) (958 ) Propylene swaps — — (4,412 ) (730 )

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Sep. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	9. COMMITMENTS AND CONTINGENCIES Purchase Commitments We will, from time to time, secure supplies of resin raw material by agreeing to purchase quantities during a future given period at a fixed price. These purchase contracts are short term in nature and occur in the ordinary course of business. Under such purchase contracts, we have agreed to purchase resin over the period October 2015 through December 2016 at a committed purchase cost of $37,530. Litigation 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), was commenced in the U.S. District Court for the Southern District of New York, naming the Company, along with Joseph A. Chlapaty, the Company’s Chief Executive Officer, and Mark B. Sturgeon, the Company’s former Chief Financial Officer, as defendants and alleging violations of the federal securities laws. An amended complaint was filed on April 28, 2016. The amended complaint alleges that the Company made material misrepresentations and/or omissions of material fact in its public disclosures during the period from July 25, 2014 through March 29, 2016, in violation of Sections 10(b) and 20(a) of the Securities Exchange Act of 1934, as amended, and Rule 10b-5 promulgated thereunder. Plaintiffs seek an unspecified amount of monetary damages on behalf of the putative class and an award of costs and expenses, including counsel fees and expert fees. The Company believes that it has valid and meritorious defenses and will vigorously defend against these allegations, but litigation is subject to many uncertainties and the outcome of this matter is not predictable with assurance. While it is reasonably possible that this matter ultimately could be decided unfavorably to the Company, the Company is currently unable to estimate the range of the possible losses, but they could be material. 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. We are involved from time to time in various legal proceedings that arise in the ordinary course of our 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. We believe that such litigation, claims, and administrative proceedings will not have a material adverse impact on our financial position or our results of operations. We record 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 our consolidated operations, cash flows, or financial position, and we have adequate accrued liabilities to cover our estimated probable loss exposure.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	6 Months Ended
	Sep. 30, 2015
Equity [Abstract]
Accumulated Other Comprehensive Loss	10. ACCUMULATED OTHER COMPREHENSIVE LOSS The following table presents the changes in the balance of Accumulated other comprehensive loss (“AOCL”) for the period ending September 30, which consists entirely of foreign currency translation gains (losses): (Amounts in thousands) Accumulated Balance at April 1, 2014 $ (6,830 ) Other comprehensive loss (2,525 ) Balance at September 30, 2014 $ (9,355 ) Balance at April 1, 2015 (15,521 ) Other comprehensive loss (8,162 ) Balance at September 30, 2015 $ (23,683 )

Income Taxes

Income Taxes	6 Months Ended
	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	11. 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, as well as discrete events. For the six months ended September 30, 2015 and 2014, the Company utilized an effective tax rate of 30.9% and 36.6%, respectively, to calculate its provision for income taxes. These rates differ from the federal statutory rate of 35% due to state and local taxes, offset by foreign income taxed at lower rates as well as uncertain tax position relief as a result of the lapse of statute of limitations.

Net Income Per Share

Net Income Per Share	6 Months Ended
	Sep. 30, 2015
Earnings Per Share [Abstract]
Net Income Per Share	12. NET INCOME PER SHARE Basic net income per share is calculated by dividing the Net income attributable to common stockholders by the weighted-average number of common shares outstanding during the period, without consideration for common stock equivalents. Diluted net income per share is computed by dividing the Net income attributable to common stockholders by the weighted-average number of common share equivalents outstanding for the period. Holders of unvested restricted stock have nonforfeitable rights to dividends when declared on common stock, and holders of Redeemable convertible preferred stock participate in dividends on an as-converted basis when declared on common stock. As a result, unvested restricted stock and Redeemable convertible preferred stock meet the definition of participating securities, which requires us to apply the two-class method to compute both basic and diluted net income per share. The two-class method is an earnings allocation formula that treats participating securities as having rights to earnings that would otherwise have been available to common stockholders. The dilutive effect of stock options and unvested restricted stock is based on the more dilutive of the treasury stock method or the diluted two-class method. In computing diluted net income per share, income available to common shareholders used in the basic net income per share calculation (numerator) is adjusted, subject to sequencing rules, for certain adjustments that would result from the assumed issuance of potential common shares. Diluted net income per share assumes the Redeemable convertible preferred stock would be cash settled through the effective date of the IPO on July 25, 2014, as we have the choice of settling in cash or shares and we have demonstrated past practice and intent of cash settlement. Therefore these shares are excluded from the calculation through the effective date of the IPO. After the effective date of the IPO, Management’s intent is to share settle; therefore, these shares are included in the calculation from July 26, 2014 through September 30, 2015, if dilutive. For purposes of the calculation of diluted net income per share, stock options and unvested restricted stock are considered to be potential common stock and are only included in the calculations when their effect is dilutive. Prior to the effective date of the IPO, the Company’s Redeemable common stock was included in the weighted-average number of common shares outstanding for calculating basic and diluted net income (loss) per share. The following table presents information necessary to calculate net income per share for the three and six months ended September 30, 2015 and 2014, 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 Six Months Ended (Amounts in thousands, except per share data) 2015 2014 2015 2014 Net income per share – Basic Net income attributable to ADS $ 10,899 $ 16,844 $ 21,609 $ 25,410 Adjustment for: Accretion of redeemable noncontrolling interest (257 ) — (257 ) — Change in fair value of redeemable convertible preferred stock — 7,319 — (11,054 ) Dividends to redeemable convertible preferred stock (362 ) (37 ) (733 ) (75 ) Dividends paid to unvested restricted stockholders (6 ) — (12 ) — Net income available to common stockholders and participating securities 10,274 24,126 20,607 14,281 Undistributed income allocated to participating securities (822 ) (2,768 ) (1,680 ) (1,702 ) Net income available to common stockholders - Basic 9,452 21,358 18,927 12,579 Weighted average number of common shares outstanding - Basic 53,882 51,518 53,753 49,538 Net income per common share - Basic $ 0.18 $ 0.41 $ 0.35 $ 0.25 Net income per share – Diluted Net income available to common stockholders - Basic $ 9,452 $ 21,358 $ 18,927 $ 12,579 Undistributed income allocated to participating securities — 1,952 — 601 Amount allocated to participating preferred stockholders — — 1,646 — Preferred stock dividends, net of tax — — 477 — Tax benefit on an as if converted common dividend — — 109 — Additional compensation for leverage ESOP — — (275 ) — Net income available to common stockholders - Diluted 9,452 23,310 20,884 13,180 Weighted average number of common shares outstanding - Basic 53,882 51,518 53,753 49,538 Assumed exercise of preferred stock — 4,714 6,531 2,382 Assumed exercise of stock options 400 231 410 278 Weighted average number of common shares outstanding - Diluted 54,282 56,463 60,694 52,198 Net income per common share - Diluted $ 0.17 $ 0.41 $ 0.34 $ 0.25 Potentially dilutive securities excluded as anti-dilutive 6,466 22 2 57

Business Segments Information

Business Segments Information	6 Months Ended
	Sep. 30, 2015
Segment Reporting [Abstract]
Business Segments Information	13. BUSINESS SEGMENTS INFORMATION We operate our business in two distinct operating and reportable segments based on the markets we serve: “Domestic” and “International”. The Chief Operating Decision Maker (“CODM”) evaluates segment reporting based on net sales and Segment Adjusted EBITDA (a non-GAAP measure). We calculate Segment Adjusted EBITDA as net income or loss before interest, income taxes, depreciation and amortization, stock-based compensation expense, non-cash charges and certain other expenses. Domestic - International – The following table sets forth reportable segment information with respect to the amount of net sales contributed by each class of similar products of our consolidated gross profit for the three and six months ended September 30, 2015 and 2014, respectively: Three Months Ended Six Months Ended (Amounts in thousands) 2015 2014 2015 2014 Domestic Pipe $ 238,291 $ 241,713 $ 458,826 $ 457,749 Allied Products 89,009 78,063 166,640 151,652 Total domestic 327,300 319,776 625,466 609,401 International Pipe 44,542 38,218 86,917 68,149 Allied Products 11,487 8,720 20,070 15,598 Total international 56,029 46,938 106,987 83,747 Total net sales $ 383,329 $ 366,714 $ 732,453 $ 693,148 The following sets forth certain additional financial information attributable to our reportable segments for the three and six months ended September 30, 2015, and 2014, respectively: Three Months Ended Six Months Ended (Amounts in thousands) 2015 2014 2015 2014 Net sales Domestic $ 327,300 $ 319,776 $ 625,466 $ 609,401 International 56,029 46,938 106,987 83,747 Total $ 383,329 $ 366,714 $ 732,453 $ 693,148 Gross profit Domestic $ 73,475 $ 65,574 $ 133,134 $ 119,641 International 10,260 4,189 23,187 10,980 Total $ 83,735 $ 69,763 $ 156,321 $ 130,621 Segment Adjusted EBITDA Domestic $ 56,677 $ 53,904 $ 97,955 94,896 International 4,266 1,296 14,799 5,432 Total $ 60,943 $ 55,200 $ 112,754 $ 100,328 Interest expense, net Domestic $ 4,901 $ 5,020 $ 8,938 $ 10,062 International 46 24 295 33 Total $ 4,947 $ 5,044 $ 9,233 $ 10,095 Depreciation and amortization Domestic $ 15,243 $ 14,937 $ 31,659 $ 29,595 International 2,124 1,437 4,346 2,805 Total $ 17,367 $ 16,374 $ 36,005 $ 32,400 Equity in net (loss) income of unconsolidated affiliates Domestic $ (12 ) $ 251 $ 324 $ 404 International (360 ) (313 ) (342 ) (1,128 ) Total $ (372 ) $ (62 ) $ (18 ) $ (724 ) Capital expenditures Domestic $ 7,631 $ 7,869 $ 16,475 $ 14,788 International 1,971 295 3,722 808 Total $ 9,602 $ 8,164 $ 20,197 $ 15,596 The following sets forth certain additional financial information attributable to our reporting segments as of September 30, 2015, and March 31, 2015, respectively: September 30, March 31, Investment in unconsolidated affiliates Domestic $ 3,075 $ 7,957 International 14,626 17,081 Total $ 17,701 $ 25,038 Total identifiable assets Domestic $ 1,010,171 $ 942,267 International 162,876 168,624 Eliminations (66,412 ) (69,193 ) Total $ 1,106,635 $ 1,041,699 Reconciliation of Segment Adjusted EBITDA to Net Income Three Months Ended September 30, 2015 2014 (Amounts in thousands) Domestic International Domestic International Net income $ 11,222 $ 3,259 $ 17,603 $ 1,394 Depreciation and amortization 15,243 2,124 14,937 1,437 Interest expense 4,901 46 5,020 24 Income tax expense (benefit) 5,884 (1,516 ) 10,897 (1,971 ) Segment EBITDA 37,250 3,913 48,457 884 Derivative fair value adjustment 5,784 (11 ) 67 — Foreign currency transaction gains — (151 ) — (205 ) Loss on disposal of assets or businesses 289 6 251 30 Unconsolidated affiliates interest, tax, depreciation and amortization (a) 260 509 291 587 Contingent consideration remeasurement 45 — 20 — Stock-based compensation 724 — 2,131 — ESOP deferred compensation 3,125 — 2,687 — Loss on BaySaver step acquisition 490 — — — Restatement costs (b) 8,710 — — — Segment Adjusted EBITDA $ 56,677 $ 4,266 $ 53,904 $ 1,296 (a) Includes our proportional share of interest, income taxes, depreciation and amortization related to our South American Joint Venture and our Tigre-ADS USA Joint Venture, which are accounted for under the equity method of accounting. In addition, these amounts include our proportional share of interest, income taxes, depreciation and amortization related to our BaySaver Joint Venture prior to our acquisition of BaySaver on July 17, 2015, which was previously accounted for under the equity method of accounting. (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. Reconciliation of Segment Adjusted EBITDA to Net Income Six Months Ended September 30, 2015 2014 (Amounts in thousands) Domestic International Domestic International Net income $ 16,764 $ 9,515 $ 25,446 $ 2,992 Depreciation and amortization 31,659 4,346 29,595 2,805 Interest expense 8,938 295 10,062 33 Income tax expense (benefit) 12,202 (463 ) 18,311 (1,492 ) Segment EBITDA 69,563 13,693 83,414 4,338 Derivative fair value adjustment 9,506 28 163 — Foreign currency transaction losses (gains) — 166 — (75 ) Loss (gain) on disposal of assets or businesses 1,341 (180 ) 311 34 Unconsolidated affiliates interest, tax, depreciation and amortization (a) 546 1,092 540 1,135 Contingent consideration remeasurement 100 — 2 — Stock-based compensation 1,449 — 4,377 — ESOP deferred compensation 6,250 — 5,374 — Loss on BaySaver step acquisition 490 — — — Restatement costs (b) 8,710 — — — Transaction costs (c) — — 715 — Segment Adjusted EBITDA $ 97,955 $ 14,799 $ 94,896 $ 5,432 (a) Includes our proportional share of interest, income taxes, depreciation and amortization related to our South American Joint Venture and our Tigre-ADS USA Joint Venture, which are accounted for under the equity method of accounting. In addition, these amounts include our proportional share of interest, income taxes, depreciation and amortization related to our BaySaver Joint Venture prior to our acquisition of BaySaver on July 17, 2015, which was previously accounted for under the equity method of accounting. (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. (c) Represents expenses recorded related to legal, accounting and other professional fees incurred in connection with the completion of the IPO in Fiscal 2015.

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	6 Months Ended
	Sep. 30, 2015
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information	14. SUPPLEMENTAL CASH FLOW INFORMATION During the six months ended September 30, 2015 and 2014, ADS acquired Property, plant and equipment under capital lease and incurred lease obligations of $25,598 and $20,158, respectively.

Subsequent Events

Subsequent Events	6 Months Ended
	Sep. 30, 2015
Subsequent Events [Abstract]
Subsequent Events	15. SUBSEQUENT EVENTS Subsequent Events Related to the Bank Term Loans and Senior Notes Our long-term debt primarily consists of amounts outstanding under a Revolving Credit Facility with borrowing capacity of $325,000 for ADS, Inc., a Revolving Credit Facility for ADS-Mexicana with borrowing capacity of $12,000, and a $100,000 term note (collectively, the “Bank Term Loans”), and the $100,000 of outstanding senior promissory notes (“Senior Notes”). The amendments and consents described below that occurred between July 2015 and February 2016 related to the delay in the filing of the Fiscal 2015 Form 10-K, and the restatement of the Company’s previously issued financial statements (the “Restatement”) as reflected in the Fiscal 2015 Form 10-K, which was filed with the SEC on March 29, 2016. From July 2015 through September 2015, the Company obtained various consents from the lenders and amended the Bank Term Loans and Senior Notes. These consents and the additional amendments had the effect of: (i) extending the time for delivery of our fiscal 2015 audited financial statements and the first and second quarter fiscal 2016 quarterly financial statements to September 30, 2016, whereby an event of default was waived as long as those financial statements were delivered within the thirty day grace period after that date, (ii) modified certain definitions applicable to the Company’s affirmative and negative financial covenants, including the negative covenant on indebtedness, to accommodate the Company’s treatment of its transportation and equipment leases as capital leases rather than operating leases and to accommodate the treatment of the costs related to the Company’s restatement, and (iii) permitted the Company’s payment of quarterly dividends on common shares in June, August and December 2015. In October 2015, the Company obtained additional consents from the requisite holders of its Bank Term Loans and its Senior Notes to further extend the time for delivery of its fiscal 2015 audited financial statements and the first quarter fiscal 2016 quarterly financial statements, as well as to extend the time for delivery of its second quarter fiscal 2016 quarterly financial statements. The consents extended the time for delivery of the fiscal 2015 audited financial statements and the first quarter fiscal 2016 quarterly financial statements to November 30, 2015, as well as extended the time for delivery of the second quarter fiscal 2016 quarterly financial statements to December 31, 2015, whereby an event of default was waived as long as those financial statements were delivered within the thirty day grace period after those dates. In December 2015, the Company entered into additional amended agreements related to the Bank Term Loans and Senior Notes that further extend the time for delivery of its fiscal 2015 audited financial statements and the first and second quarter fiscal 2016 quarterly financial statements. The December 2015 amended agreements extended the time for delivery of the fiscal 2015 audited financial statements and the first and second quarter fiscal 2016 quarterly financial statements to January 31, 2016, whereby an event of default was waived as long as those financial statements were delivered within the thirty day grace period after that date. The December 2015 amended agreements also modify certain definitions applicable to the Company’s affirmative and negative financial covenants, including with respect to the treatment of the costs related to the Company’s restatement for purposes of the calculation of the minimum fixed charge coverage ratio and the maximum leverage ratio. As part of the December 2015 amended agreements, the lenders also consented to the Company’s payment of a $0.05 per share common stock dividend in December 2015. In February 2016, the Company entered into additional amended agreements related to the Bank Term Loans and Senior Notes that further extend the time for delivery of its fiscal 2015 audited financial statements and the first and second quarter fiscal 2016 quarterly financial statements, as well as to extend the time for delivery of its third quarter fiscal 2016 quarterly financial statements. The February 2016 amended agreements extended the time for delivery of the fiscal 2015 audited financial statements and the first, second and third quarter fiscal 2016 quarterly financial statements to April 1, 2016, whereby an event of default was waived as long as those financial statements were delivered by that date without regard to any grace period. As part of the February 2016 amended agreements, the lenders also consented to the Company’s payment of the previously declared annual dividend of $0.0195 per share to be paid on shares of preferred stock in March 2016. Subsequent Event Related to the ADS Mexicana Scotia Bank Revolving Credit Facility On May 27, 2016, ADS Mexicana obtained a waiver on a covenant from Scotia Bank relating to ADS Mexicana failing to notify Scotia Bank of changes in legal organizational structure and payment of dividends.

Background and Summary of Sig25

Background and Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Sep. 30, 2015
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, 2015 was derived from audited financial statements. In our opinion, the accompanying unaudited condensed consolidated financial statements contain all adjustments, of a normal recurring nature, necessary to present fairly its financial position as of September 30, 2015 and the results of operations for the three and six months ended September 30, 2015 and 2014 and cash flows for the six months ended September 30, 2015 and 2014. The interim condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements, including the notes thereto, filed in our Annual Report on Form 10-K for the year ended March 31, 2015 (“Fiscal 2015 Form 10-K”).
Principles of Consolidation	Principles of Consolidation Our condensed consolidated financial statements include the Company, our wholly-owned subsidiaries, our majority-owned subsidiaries, including ADS Mexicana, S.A. de C.V. (together with its affiliate ADS Corporativo, S.A. de C.V., “ADS Mexicana”) and BaySaver Technologies, LLC (“BaySaver”), and variable interest entities (“VIEs”) of which we are the primary beneficiary. We use the equity method of accounting for equity investments where we exercise significant influence but do not hold a controlling financial interest. Such investments are recorded in Other assets in our Condensed Consolidated Balance Sheets and the related equity earnings from these investments are included in Equity in net loss of unconsolidated affiliates in our Condensed Consolidated Statements of Operations. All intercompany balances and transactions have been eliminated in consolidation.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Stock-Based Compensation With the exception of the pronouncement described above, there have been no new accounting pronouncements issued since the filing of our Fiscal 2015 Form 10-K that have significance, or potential significance, to our consolidated financial statements.

Acquisitions (Tables)

Acquisitions (Tables)	6 Months Ended
	Sep. 30, 2015
Business Combinations [Abstract]
Schedule of Business Acquisitions by Acquisition, Contingent Consideration	The purchase price was determined as follows: (Amounts in thousands) Acquisition-date fair value of our prior equity interest $ 4,220 Acquisition-date fair value of noncontrolling interest 6,330 Cash paid at acquisition date 3,200 Fair value of contingent consideration 750 Total purchase price $ 14,500
Summary of Preliminary Purchase Price Allocation	The preliminary purchase price allocation is as follows: (Amounts in thousands) Cash $ 12 Other current assets 2,262 Property, plant and equipment 164 Goodwill 2,495 Intangible assets 10,800 Other assets 152 Current liabilities (1,385 ) Total purchase price $ 14,500
Effect of Acquisitions for Unaudited Pro Forma Consolidated Statements of Operations	This pro forma information is presented for illustrative purposes only and is not indicative of what actual results would have been if the acquisitions had taken place on April 1, 2014 or of future results. The unaudited pro forma consolidated results are not projections of future results of operations of the combined company nor do they reflect the expected realization of any cost savings or synergies associated with the acquisition. (Amounts in thousands) Six months ended 2015 2014 Net sales $ 736,052 $ 698,937 Net income attributable to ADS $ 21,647 $ 25,437

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Sep. 30, 2015
Inventory Disclosure [Abstract]
Schedule of Inventories	Inventories as of September 30, 2015 and March 31, 2015 consisted of the following: (Amounts in thousands) September 30, March 31, Raw materials $ 48,010 $ 50,198 Finished goods 172,247 219,644 Total inventories $ 220,257 $ 269,842

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Change in Carrying Amount of Goodwill by Reportable Segment	The change in carrying amount of goodwill by reportable segment is as follows: (Amounts in thousands) Domestic International Total Balance at March 31, 2015 $ 87,507 $ 11,172 $ 98,679 Acquisition 2,495 — 2,495 Currency translation — (691 ) (691 ) Balance at September 30, 2015 $ 90,002 $ 10,481 $ 100,483
Summary of Intangible Assets	Intangible Assets Intangible assets as of September 30, 2015 and March 31, 2015 consisted of the following: September 30, 2015 March 31, 2015 (Amounts in thousands) Gross Accumulated Net Gross Accumulated Net Definite-lived intangible assets Developed technology $ 44,579 $ (28,113 ) $ 16,466 $ 40,579 $ (26,405 ) $ 14,174 Customer relationships 40,601 (20,576 ) 20,025 43,167 (26,113 ) 17,054 Patents 6,847 (3,858 ) 2,989 6,547 (3,550 ) 2,997 Non-compete and other contractual agreements 1,237 (710 ) 527 1,365 (691 ) 674 Trademarks and tradenames 15,477 (3,607 ) 11,870 14,248 (3,051 ) 11,197 Total definite-lived intangible assets 108,741 (56,864 ) 51,877 105,906 (59,810 ) 46,096 Indefinite-lived intangible assets Trademarks 11,934 — 11,934 11,959 — 11,959 Total intangible assets $ 120,675 $ (56,864 ) $ 63,811 $ 117,865 $ (59,810 ) $ 58,055

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	6 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Summary of Assets and Liabilities Carried at Fair Value	Recurring Fair Value Measurements The assets and liabilities carried at fair value as of September 30, 2015 and March 31, 2015 were as follows: September 30, 2015 (Amounts in thousands) Total Level 1 Level 2 Level 3 Liabilities: Derivative liability - interest rate swaps $ 622 $ — $ 622 $ — Derivative liability - diesel fuel contracts 2,930 — 2,930 — Derivative liability - propylene swaps 14,702 — 14,702 — Contingent consideration for acquisitions 2,869 — — 2,869 Total liabilities at fair value on a recurring basis $ 21,123 $ — $ 18,254 $ 2,869 March 31, 2015 (Amounts in thousands) Total Level 1 Level 2 Level 3 Assets: Derivative assets - currency forward contracts $ 28 $ — $ 28 $ — Total assets at fair value on a recurring basis $ 28 $ — $ 28 $ — Liabilities: Derivative liability - interest rate swaps $ 765 $ — $ 765 $ — Derivative liability - diesel fuel contracts 2,841 — 2,841 — Derivative liability - propylene swaps 5,142 — 5,142 — Contingent consideration for acquisitions 2,444 — — 2,444 Total liabilities at fair value on a recurring basis $ 11,192 $ — $ 8,748 $ 2,444
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 three and six months ended September 30, 2015 and 2014 were as follows: Three Months Ended (amounts in thousands) Contingent Balance at June 30, 2015 $ 2,285 Acquisition 750 Change in fair value 45 Payments of contingent consideration liability (211 ) Balance at September 30, 2015 $ 2,869 Three Months Ended September 30, 2014 (amounts in thousands) Contingent Redeemable Redeemable Deferred compensation ESOP shares Total Balance at June 30, 2014 $ 2,697 $ 659,431 $ 348,898 $ (233,106 ) $ 777,920 Allocation of ESOP shares to participants — — — 804 804 Change in fair value 20 (44,391 ) (22,275 ) 14,956 (51,690 ) Payments of contingent consideration liability (191 ) — — — (191 ) Transfer from Level 3 — (615,040 ) (326,623 ) 217,346 (724,317 ) Balance at September 30, 2014 $ 2,526 $ — $ — $ — $ 2,526 Six Months Ended (amounts in thousands) Contingent Balance at March 31, 2015 $ 2,444 Acquisition 750 Change in fair value 100 Payments of contingent consideration liability (425 ) Balance at September 30, 2015 $ 2,869 Six Months Ended September 30, 2014 (amounts in thousands) Contingent Redeemable Redeemable Deferred Total Balance at March 31, 2014 $ 2,898 $ 549,119 $ 291,720 $ (197,888 ) $ 645,849 Allocation of ESOP shares to participants — — — 4,391 4,391 Change in fair value 2 65,921 34,903 (23,849 ) 76,977 Payments of contingent consideration liability (374 ) — — — (374 ) Transfer from Level 3 — (615,040 ) (326,623 ) 217,346 (724,317 ) Balance at September 30, 2014 $ 2,526 $ — $ — $ — $ 2,526

Debt (Tables)

Debt (Tables)	6 Months Ended
	Sep. 30, 2015
Debt Disclosure [Abstract]
Long-Term Debt	Long-term debt as of September 30, 2015 and March 31, 2015 consisted of the following: (amounts in thousands) September 30, March 31, Bank Term Loans: Revolving Credit Facility - ADS $ 234,900 $ 205,100 Term Note 87,500 91,250 Senior Notes payable 100,000 100,000 Industrial revenue bonds 3,135 3,545 Total 425,535 399,895 Current maturities (35,850 ) (9,580 ) Long-term debt obligations $ 389,685 $ 390,315

Derivative Transactions (Tables

Derivative Transactions (Tables)	6 Months Ended
	Sep. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Fair Value of the Derivatives Included in the Condensed Consolidated Balance Sheets	The fair value of the derivatives are included in the Condensed Consolidated Balance Sheets at September 30, 2015 and March 31, 2015 as follows: September 30, 2015 Liabilities (Amounts in thousands) Other accrued Other liabilities Interest rate swaps $ (622 ) $ — Diesel fuel option collars and swaps (2,093 ) (837 ) Propylene swaps (11,934 ) (2,768 ) March 31, 2015 Assets Liabilities (Amounts in thousands) Receivables Other assets Other accrued Other Interest rate swaps $ — $ — $ (150 ) $ (615 ) Foreign exchange forward contracts 28 — — — Diesel fuel option collars and swaps — — (1,883 ) (958 ) Propylene swaps — — (4,412 ) (730 )

Accumulated Other Comprehensi32

Accumulated Other Comprehensive Loss (Tables)	6 Months Ended
	Sep. 30, 2015
Equity [Abstract]
Summary of Changes in Balance of Accumulated Other Comprehensive Loss	The following table presents the changes in the balance of Accumulated other comprehensive loss (“AOCL”) for the period ending September 30, which consists entirely of foreign currency translation gains (losses): (Amounts in thousands) Accumulated Balance at April 1, 2014 $ (6,830 ) Other comprehensive loss (2,525 ) Balance at September 30, 2014 $ (9,355 ) Balance at April 1, 2015 (15,521 ) Other comprehensive loss (8,162 ) Balance at September 30, 2015 $ (23,683 )

Net Income Per Share (Tables)

Net Income Per Share (Tables)	6 Months Ended
	Sep. 30, 2015
Earnings Per Share [Abstract]
Summary of Net Income Per Share	The following table presents information necessary to calculate net income per share for the three and six months ended September 30, 2015 and 2014, 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 Six Months Ended (Amounts in thousands, except per share data) 2015 2014 2015 2014 Net income per share – Basic Net income attributable to ADS $ 10,899 $ 16,844 $ 21,609 $ 25,410 Adjustment for: Accretion of redeemable noncontrolling interest (257 ) — (257 ) — Change in fair value of redeemable convertible preferred stock — 7,319 — (11,054 ) Dividends to redeemable convertible preferred stock (362 ) (37 ) (733 ) (75 ) Dividends paid to unvested restricted stockholders (6 ) — (12 ) — Net income available to common stockholders and participating securities 10,274 24,126 20,607 14,281 Undistributed income allocated to participating securities (822 ) (2,768 ) (1,680 ) (1,702 ) Net income available to common stockholders - Basic 9,452 21,358 18,927 12,579 Weighted average number of common shares outstanding - Basic 53,882 51,518 53,753 49,538 Net income per common share - Basic $ 0.18 $ 0.41 $ 0.35 $ 0.25 Net income per share – Diluted Net income available to common stockholders - Basic $ 9,452 $ 21,358 $ 18,927 $ 12,579 Undistributed income allocated to participating securities — 1,952 — 601 Amount allocated to participating preferred stockholders — — 1,646 — Preferred stock dividends, net of tax — — 477 — Tax benefit on an as if converted common dividend — — 109 — Additional compensation for leverage ESOP — — (275 ) — Net income available to common stockholders - Diluted 9,452 23,310 20,884 13,180 Weighted average number of common shares outstanding - Basic 53,882 51,518 53,753 49,538 Assumed exercise of preferred stock — 4,714 6,531 2,382 Assumed exercise of stock options 400 231 410 278 Weighted average number of common shares outstanding - Diluted 54,282 56,463 60,694 52,198 Net income per common share - Diluted $ 0.17 $ 0.41 $ 0.34 $ 0.25 Potentially dilutive securities excluded as anti-dilutive 6,466 22 2 57

Business Segments Information (

Business Segments Information (Tables)	6 Months Ended
	Sep. 30, 2015
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 of our consolidated gross profit for the three and six months ended September 30, 2015 and 2014, respectively: Three Months Ended Six Months Ended (Amounts in thousands) 2015 2014 2015 2014 Domestic Pipe $ 238,291 $ 241,713 $ 458,826 $ 457,749 Allied Products 89,009 78,063 166,640 151,652 Total domestic 327,300 319,776 625,466 609,401 International Pipe 44,542 38,218 86,917 68,149 Allied Products 11,487 8,720 20,070 15,598 Total international 56,029 46,938 106,987 83,747 Total net sales $ 383,329 $ 366,714 $ 732,453 $ 693,148
Schedule of Additional Financial Information Attributable to Reportable Segments	The following sets forth certain additional financial information attributable to our reportable segments for the three and six months ended September 30, 2015, and 2014, respectively: Three Months Ended Six Months Ended (Amounts in thousands) 2015 2014 2015 2014 Net sales Domestic $ 327,300 $ 319,776 $ 625,466 $ 609,401 International 56,029 46,938 106,987 83,747 Total $ 383,329 $ 366,714 $ 732,453 $ 693,148 Gross profit Domestic $ 73,475 $ 65,574 $ 133,134 $ 119,641 International 10,260 4,189 23,187 10,980 Total $ 83,735 $ 69,763 $ 156,321 $ 130,621 Segment Adjusted EBITDA Domestic $ 56,677 $ 53,904 $ 97,955 94,896 International 4,266 1,296 14,799 5,432 Total $ 60,943 $ 55,200 $ 112,754 $ 100,328 Interest expense, net Domestic $ 4,901 $ 5,020 $ 8,938 $ 10,062 International 46 24 295 33 Total $ 4,947 $ 5,044 $ 9,233 $ 10,095 Depreciation and amortization Domestic $ 15,243 $ 14,937 $ 31,659 $ 29,595 International 2,124 1,437 4,346 2,805 Total $ 17,367 $ 16,374 $ 36,005 $ 32,400 Equity in net (loss) income of unconsolidated affiliates Domestic $ (12 ) $ 251 $ 324 $ 404 International (360 ) (313 ) (342 ) (1,128 ) Total $ (372 ) $ (62 ) $ (18 ) $ (724 ) Capital expenditures Domestic $ 7,631 $ 7,869 $ 16,475 $ 14,788 International 1,971 295 3,722 808 Total $ 9,602 $ 8,164 $ 20,197 $ 15,596 The following sets forth certain additional financial information attributable to our reporting segments as of September 30, 2015, and March 31, 2015, respectively: September 30, March 31, Investment in unconsolidated affiliates Domestic $ 3,075 $ 7,957 International 14,626 17,081 Total $ 17,701 $ 25,038 Total identifiable assets Domestic $ 1,010,171 $ 942,267 International 162,876 168,624 Eliminations (66,412 ) (69,193 ) Total $ 1,106,635 $ 1,041,699
Schedule of Reconciliation of Segment Adjusted EBITDA to Net Income	Reconciliation of Segment Adjusted EBITDA to Net Income Three Months Ended September 30, 2015 2014 (Amounts in thousands) Domestic International Domestic International Net income $ 11,222 $ 3,259 $ 17,603 $ 1,394 Depreciation and amortization 15,243 2,124 14,937 1,437 Interest expense 4,901 46 5,020 24 Income tax expense (benefit) 5,884 (1,516 ) 10,897 (1,971 ) Segment EBITDA 37,250 3,913 48,457 884 Derivative fair value adjustment 5,784 (11 ) 67 — Foreign currency transaction gains — (151 ) — (205 ) Loss on disposal of assets or businesses 289 6 251 30 Unconsolidated affiliates interest, tax, depreciation and amortization (a) 260 509 291 587 Contingent consideration remeasurement 45 — 20 — Stock-based compensation 724 — 2,131 — ESOP deferred compensation 3,125 — 2,687 — Loss on BaySaver step acquisition 490 — — — Restatement costs (b) 8,710 — — — Segment Adjusted EBITDA $ 56,677 $ 4,266 $ 53,904 $ 1,296 (a) Includes our proportional share of interest, income taxes, depreciation and amortization related to our South American Joint Venture and our Tigre-ADS USA Joint Venture, which are accounted for under the equity method of accounting. In addition, these amounts include our proportional share of interest, income taxes, depreciation and amortization related to our BaySaver Joint Venture prior to our acquisition of BaySaver on July 17, 2015, which was previously accounted for under the equity method of accounting. (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. Reconciliation of Segment Adjusted EBITDA to Net Income Six Months Ended September 30, 2015 2014 (Amounts in thousands) Domestic International Domestic International Net income $ 16,764 $ 9,515 $ 25,446 $ 2,992 Depreciation and amortization 31,659 4,346 29,595 2,805 Interest expense 8,938 295 10,062 33 Income tax expense (benefit) 12,202 (463 ) 18,311 (1,492 ) Segment EBITDA 69,563 13,693 83,414 4,338 Derivative fair value adjustment 9,506 28 163 — Foreign currency transaction losses (gains) — 166 — (75 ) Loss (gain) on disposal of assets or businesses 1,341 (180 ) 311 34 Unconsolidated affiliates interest, tax, depreciation and amortization (a) 546 1,092 540 1,135 Contingent consideration remeasurement 100 — 2 — Stock-based compensation 1,449 — 4,377 — ESOP deferred compensation 6,250 — 5,374 — Loss on BaySaver step acquisition 490 — — — Restatement costs (b) 8,710 — — — Transaction costs (c) — — 715 — Segment Adjusted EBITDA $ 97,955 $ 14,799 $ 94,896 $ 5,432 (a) Includes our proportional share of interest, income taxes, depreciation and amortization related to our South American Joint Venture and our Tigre-ADS USA Joint Venture, which are accounted for under the equity method of accounting. In addition, these amounts include our proportional share of interest, income taxes, depreciation and amortization related to our BaySaver Joint Venture prior to our acquisition of BaySaver on July 17, 2015, which was previously accounted for under the equity method of accounting. (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. (c) Represents expenses recorded related to legal, accounting and other professional fees incurred in connection with the completion of the IPO in Fiscal 2015.

Background and Summary of Sig35

Background and Summary of Significant Accounting Policies - Additional Information (Detail)	Dec. 15, 2014USD ($)$ / sharesshares	Dec. 09, 2014USD ($)$ / sharesshares	Aug. 22, 2014$ / sharesshares	Jul. 25, 2014USD ($)$ / sharesshares	Jul. 11, 2014	Sep. 30, 2015Segment$ / sharesshares	Sep. 30, 2014USD ($)	Mar. 31, 2015$ / sharesshares
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments | Segment						2
Common stock, shares issued						153,560,000		153,560,000
Common stock, shares outstanding						54,107,000		53,522,000
Net proceeds from initial public offering | $							$ 79,131,000
Offering price per share | $ / shares						$ 0.01		$ 0.01
IPO [Member]
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]
Common and preferred stock conversion split ratio, description						4.707-for-one split
Common and preferred stock conversion split ratio					4.707
Additional shares issued			600,000	5,289,000
Common stock, shares issued				52,881,000
Common stock, shares outstanding				52,881,000
Net proceeds from initial public offering | $				$ 79,131,000
Underwriter discounts and commissions on initial public offering | $				$ 5,501,000
Share price | $ / shares			$ 16	$ 16
Secondary Public Offering [Member]
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]
Additional shares issued		10,000,000
Common stock, shares issued	1,500,000
Offering price per share | $ / shares	$ 21.25	$ 21.25
Proceeds from sale of shares | $	$ 0	$ 0

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) - USD ($) $ in Thousands	Jul. 17, 2015	Sep. 30, 2015	Sep. 30, 2014	Mar. 31, 2015
Business Acquisition [Line Items]
Goodwill		$ 100,483		$ 98,679
Intangible assets		108,741		105,906
Pro Forma [Member]
Business Acquisition [Line Items]
Intangible asset amortization expense, net of related income taxes and amounts related to noncontrolling interest		94	$ 167
Interest expense, net of related income taxes and amounts related to noncontrolling interest		10	17
Equity method investments, net of related income taxes		109	$ 286
BaySaver [Member]
Business Acquisition [Line Items]
Additionally acquired percentage of ownership interest in joint ventures	10.00%
Purchase price	$ 3,200	$ 14,500
Percentage of ownership interest in joint ventures		65.00%
Fair value of contingent consideration	750
Business combination equity interest remeasurement loss	490
Goodwill	2,495	$ 2,495
Net sales of acquired entity included in condensed consolidated statements of operations	3,456
Earnings from operations of acquired entity included in condensed consolidated statements of operations	316
Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets	$ 5,400	40,601		43,167
Intangible assets, useful life	10 years
Developed Technology [Member]
Business Acquisition [Line Items]
Intangible assets	$ 4,000	44,579		40,579
Intangible assets, useful life	10 years
Trademarks and Tradenames [Member]
Business Acquisition [Line Items]
Intangible assets	$ 1,400	$ 15,477		$ 14,248
Intangible assets, useful life	10 years

Acquisitions - Schedule of Busi

Acquisitions - Schedule of Business Acquisitions by Acquisition, Contingent Consideration (Detail) - BaySaver [Member] $ in Thousands	Jul. 17, 2015USD ($)
Business Acquisition [Line Items]
Acquisition-date fair value of our prior equity interest	$ 4,220
Acquisition-date fair value of noncontrolling interest	6,330
Cash paid at acquisition date	3,200
Fair value of contingent consideration	750
Total purchase price	$ 14,500

Acquisitions - Summary of Preli

Acquisitions - Summary of Preliminary Purchase Price Allocation (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Jul. 17, 2015	Mar. 31, 2015
Business Acquisition [Line Items]
Goodwill	$ 100,483		$ 98,679
BaySaver [Member]
Business Acquisition [Line Items]
Cash	12
Other current assets	2,262
Property, plant and equipment	164
Goodwill	2,495	$ 2,495
Intangible assets	10,800
Other assets	152
Current liabilities	(1,385)
Total purchase price	$ 14,500	$ 3,200

Acquisitions - Effect of Acquis

Acquisitions - Effect of Acquisitions for Unaudited Pro Forma Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Business Acquisition, Pro Forma Information [Abstract]
Net sales	$ 736,052	$ 698,937
Net income attributable to ADS	$ 21,647	$ 25,437

Inventories - Schedule of Inven

Inventories - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Mar. 31, 2015
Inventory Disclosure [Abstract]
Raw materials	$ 48,010	$ 50,198
Finished goods	172,247	219,644
Total inventories	$ 220,257	$ 269,842

Inventories - Additional Inform

Inventories - Additional Information (Detail) - USD ($)	Sep. 30, 2015	Mar. 31, 2015
Inventory Disclosure [Abstract]
Work-in-process inventories	$ 0	$ 0

Goodwill and Intangible Asset42

Goodwill and Intangible Assets - Change in Carrying Amount of Goodwill by Reportable Segment (Detail) $ in Thousands	6 Months Ended
	Sep. 30, 2015USD ($)
Goodwill [Line Items]
Beginning balance	$ 98,679
Acquisition	2,495
Currency translation	(691)
Ending balance	100,483
Domestic [Member]
Goodwill [Line Items]
Beginning balance	87,507
Acquisition	2,495
Ending balance	90,002
International Segment [Member]
Goodwill [Line Items]
Beginning balance	11,172
Currency translation	(691)
Ending balance	$ 10,481

Goodwill and Intangible Asset43

Goodwill and Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Jul. 17, 2015	Mar. 31, 2015
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible	$ 108,741		$ 105,906
Intangible Assets, Gross	120,675
Indefinite-Lived Intangible Assets			117,865
Accumulated Amortization	(56,864)		(59,810)
Net Intangible	51,877		46,096
Intangible assets, net	63,811		58,055
Trademarks [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	11,934		11,959
Developed Technology [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible	44,579	$ 4,000	40,579
Accumulated Amortization	(28,113)		(26,405)
Net Intangible	16,466		14,174
Customer Relationships [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible	40,601	5,400	43,167
Accumulated Amortization	(20,576)		(26,113)
Net Intangible	20,025		17,054
Patents [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible	6,847		6,547
Accumulated Amortization	(3,858)		(3,550)
Net Intangible	2,989		2,997
Non-compete and Other Contractual Agreements [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible	1,237		1,365
Accumulated Amortization	(710)		(691)
Net Intangible	527		674
Trademarks and Tradenames [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible	15,477	$ 1,400	14,248
Accumulated Amortization	(3,607)		(3,051)
Net Intangible	$ 11,870		$ 11,197

Fair Value Measurement - Summar

Fair Value Measurement - Summary of Assets and Liabilities Carried at Fair Value (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Mar. 31, 2015	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities at fair value on a recurring basis			$ 2,526	$ 777,920	$ 645,849
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets at fair value on a recurring basis		$ 28
Contingent consideration for acquisitions	$ 2,869	2,444
Total liabilities at fair value on a recurring basis	21,123	11,192
Fair Value, Measurements, Recurring [Member] | 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		28
Total liabilities at fair value on a recurring basis	18,254	8,748
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration for acquisitions	2,869	2,444
Total liabilities at fair value on a recurring basis	2,869	2,444
Fair Value, Measurements, Recurring [Member] | Diesel Fuel Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	2,930	2,841
Fair Value, Measurements, Recurring [Member] | Diesel Fuel Contracts [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	2,930	2,841
Fair Value, Measurements, Recurring [Member] | Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	622	765
Fair Value, Measurements, Recurring [Member] | Interest Rate Swaps [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	622	765
Fair Value, Measurements, Recurring [Member] | Foreign Exchange Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets - currency forward contracts		28
Fair Value, Measurements, Recurring [Member] | Foreign Exchange Forward Contracts [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets - currency forward contracts		28
Fair Value, Measurements, Recurring [Member] | Propylene Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	14,702	5,142
Fair Value, Measurements, Recurring [Member] | Propylene Swaps [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	$ 14,702	$ 5,142

Fair Value Measurement - Summ45

Fair Value Measurement - Summary of Changes in Fair Value of Recurring Fair Value Measurements Using Unobservable Inputs (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Allocation of ESOP shares to participants			$ 2,707	$ (1,339)
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance beginning		$ 777,920		645,849
Allocation of ESOP shares to participants		804		4,391
Change in fair value		(51,690)		76,977
Payments of contingent consideration liability		(191)		(374)
Transfer from Level 3		(724,317)		(724,317)
Balance ending		2,526		2,526
Level 3 [Member] | Contingent Consideration [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance beginning	$ 2,285	2,697	2,444	2,898
Acquisition	750		750
Change in fair value	45	20	100	2
Payments of contingent consideration liability	(211)	(191)	(425)	(374)
Balance ending	$ 2,869	2,526	$ 2,869	2,526
Level 3 [Member] | Redeemable Common Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance beginning		659,431		549,119
Change in fair value		(44,391)		65,921
Transfer from Level 3		(615,040)		(615,040)
Level 3 [Member] | Redeemable Convertible Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance beginning		348,898		291,720
Change in fair value		(22,275)		34,903
Transfer from Level 3		(326,623)		(326,623)
Level 3 [Member] | Deferred Compensation - Unearned ESOP Shares [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance beginning		(233,106)		(197,888)
Allocation of ESOP shares to participants		804		4,391
Change in fair value		14,956		(23,849)
Transfer from Level 3		$ 217,346		$ 217,346

Fair Value Measurement - Additi

Fair Value Measurement - Additional Information (Detail) - USD ($)	6 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Mar. 31, 2014
Fair Value Disclosures [Abstract]
Fair value of assets and liabilities, additional transfers	$ 0	$ 0
Weighted average costs of capital percentage			11.00%

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Jun. 30, 2015	Apr. 30, 2015	Mar. 31, 2015
Credit Facility Arrangement with Scotia Bank [Member]
Related Party Transaction [Line Items]
Amount borrowed under credit facility					$ 3,854,000	$ 3,000,000
Pipe Sales Joint Venture Agreement [Member]
Related Party Transaction [Line Items]
Proceeds from sales	$ 0	$ 1,027,000	$ 0	$ 2,339,000
Outstanding receivables from related party	$ 516,000		$ 516,000
ADS Mexicana [Member] | Pipe Sales Joint Venture Agreement [Member]
Related Party Transaction [Line Items]
Outstanding receivables from related party							$ 1,005,000
ADS Mexicana [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Related Party Transaction [Line Items]
Company's ownership percentage	51.00%		51.00%
Cash payments for consulting services related to the operations of the business	$ 37,000	94,000	$ 100,000	169,000
Guarantee percentage on credit facility			100.00%
Maximum potential guarantee payments	$ 12,000,000		$ 12,000,000
Guarantee description			We are the guarantor of 100% of ADS Mexicana's credit facility
BaySaver [Member]
Related Party Transaction [Line Items]
Company's ownership percentage	65.00%		65.00%
South American Joint Venture [Member]
Related Party Transaction [Line Items]
Maximum borrowings permitted under credit facility	$ 19,000,000		$ 19,000,000
Credit facility, maturity date			Feb. 5, 2017
Outstanding letters of credit	13,500,000		$ 13,500,000				$ 13,600,000
Percentage of debt guarantee			50.00%
Maximum potential payment under guarantee	6,700,000		$ 6,700,000
Sales with their related parties	$ 182,000	$ 146,000	$ 881,000	$ 463,000
South American Joint Venture [Member] | US Dollar Denominated Loans [Member]
Related Party Transaction [Line Items]
Weighted average interest rate	3.25%		3.25%
South American Joint Venture [Member] | Chilean Peso Denominated Loans [Member]
Related Party Transaction [Line Items]
Weighted average interest rate	6.56%		6.56%

Debt - Long-Term Debt (Detail)

Debt - Long-Term Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Mar. 31, 2015
Debt Instrument [Line Items]
Senior Notes payable	$ 100,000	$ 100,000
Total	425,535	399,895
Current maturities	(35,850)	(9,580)
Long-term debt obligations	389,685	390,315
Term Note [Member]
Debt Instrument [Line Items]
Term Note	87,500	91,250
Industrial Revenue Bonds [Member]
Debt Instrument [Line Items]
Industrial revenue bonds	3,135	3,545
Revolving Credit Facility [Member] | ADS [Member]
Debt Instrument [Line Items]
Revolving Credit Facility - ADS	$ 234,900	$ 205,100

Debt - Additional Information (

Debt - Additional Information (Detail) - Revolving Credit Facility [Member] - USD ($)	6 Months Ended
	Sep. 30, 2015	Dec. 11, 2014
Credit Facility Arrangement with Scotia Bank [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 5,000,000
Remaining borrowing capacity	$ 5,000,000
Revolving credit facility, maturity date	Dec. 11, 2017
ADS Mexicana [Member]
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 12,000,000
ADS Mexicana [Member] | Credit Facility Arrangement with Scotia Bank [Member]
Debt Instrument [Line Items]
Outstanding principal amount	$ 0

Derivative Transactions - Addit

Derivative Transactions - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Unrealized Gain (Loss) on Derivatives and Commodity Contracts [Abstract]
Losses on mark-to-market adjustments for changes in fair value on derivative	$ (5,773)	$ (67)	$ (9,534)	$ (163)

Derivative Transactions - Summa

Derivative Transactions - Summary of Fair Value of the Derivatives Included in the Condensed Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Mar. 31, 2015
Interest Rate Swaps [Member] | Other Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liabilities	$ (622)	$ (150)
Interest Rate Swaps [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liabilities		(615)
Foreign Exchange Forward Contracts [Member] | Receivables [Member]
Derivatives, Fair Value [Line Items]
Assets		28
Diesel Fuel Option Collars and Swaps [Member] | Other Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liabilities	(2,093)	(1,883)
Diesel Fuel Option Collars and Swaps [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liabilities	(837)	(958)
Propylene Swaps [Member] | Other Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liabilities	(11,934)	(4,412)
Propylene Swaps [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Liabilities	$ (2,768)	$ (730)

Commitments and Contingencies (

Commitments and Contingencies (Purchase Commitments) - Additional Information (Detail) $ in Thousands	Sep. 30, 2015USD ($)
Inventory [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Total purchase commitment	$ 37,530

Accumulated Other Comprehensi53

Accumulated Other Comprehensive Loss - Summary of Changes in Balance of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Beginning Balance	$ (15,521)	$ (6,830)
Other comprehensive loss	(8,162)	(2,525)
Ending Balance	$ (23,683)	$ (9,355)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail)	6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Effective income tax rate	30.90%	36.60%
Federal statutory rate	35.00%

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, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net income per share - Basic
Net income attributable to ADS	$ 10,899	$ 16,844	$ 21,609	$ 25,410
Accretion of Redeemable noncontrolling interest	(257)		(257)
Change in fair value of Redeemable convertible preferred stock		7,319		(11,054)
Dividends to redeemable convertible preferred stock	(362)	(37)	(733)	(75)
Dividends paid to unvested restricted stockholders	(6)		(12)
Net income available to common stockholders and participating securities	10,274	24,126	20,607	14,281
Undistributed income allocated to participating securities	(822)	(2,768)	(1,680)	(1,702)
Net income available to common stockholders - Basic	$ 9,452	$ 21,358	$ 18,927	$ 12,579
Weighted average number of common shares outstanding - Basic	53,882	51,518	53,753	49,538
Net income per common share - Basic	$ 0.18	$ 0.41	$ 0.35	$ 0.25
Net income per share - Diluted
Net income available to common stockholders - Basic	$ 9,452	$ 21,358	$ 18,927	$ 12,579
Undistributed income allocated to participating securities		1,952		601
Amount allocated to participating preferred stockholders			1,646
Preferred stock dividends, net of tax			477
Tax benefit on an as if converted common dividend			109
Additional compensation for leverage ESOP			(275)
Net income available to common stockholders - Diluted	$ 9,452	$ 23,310	$ 20,884	$ 13,180
Weighted average number of common shares outstanding - Basic	53,882	51,518	53,753	49,538
Assumed exercise of preferred stock		4,714	6,531	2,382
Assumed exercise of stock options	400	231	410	278
Weighted average number of common shares outstanding - Diluted	54,282	56,463	60,694	52,198
Net income per common share - Diluted	$ 0.17	$ 0.41	$ 0.34	$ 0.25
Potentially dilutive securities excluded as anti-dilutive	6,466	22	2	57

Business Segments Information -

Business Segments Information - Additional Information (Detail)	6 Months Ended
	Sep. 30, 2015Segment
Segment Reporting [Abstract]
Number of reportable segments	2
Number of operating segments	2

Business Segments Information57

Business Segments Information - Schedule of Revenue from Reportable Segments by Product Type (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Total net sales	$ 383,329	$ 366,714	$ 732,453	$ 693,148
Domestic [Member]
Segment Reporting Information [Line Items]
Total net sales	327,300	319,776	625,466	609,401
Domestic [Member] | Pipe [Member]
Segment Reporting Information [Line Items]
Total net sales	238,291	241,713	458,826	457,749
Domestic [Member] | Allied Products [Member]
Segment Reporting Information [Line Items]
Total net sales	89,009	78,063	166,640	151,652
International Segment [Member]
Segment Reporting Information [Line Items]
Total net sales	56,029	46,938	106,987	83,747
International Segment [Member] | Pipe [Member]
Segment Reporting Information [Line Items]
Total net sales	44,542	38,218	86,917	68,149
International Segment [Member] | Allied Products [Member]
Segment Reporting Information [Line Items]
Total net sales	$ 11,487	$ 8,720	$ 20,070	$ 15,598

Business Segments Information58

Business Segments Information - Schedule of Additional Financial Information Attributable to Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Mar. 31, 2015
Segment Reporting Information [Line Items]
Net sales	$ 383,329	$ 366,714	$ 732,453	$ 693,148
Gross profit	83,735	69,763	156,321	130,621
Segment Adjusted EBITDA	60,943	55,200	112,754	100,328
Interest expense, net	4,947	5,044	9,233	10,095
Depreciation and amortization	17,367	16,374	36,005	32,400
Equity in net (loss) income of unconsolidated affiliates	(372)	(62)	(18)	(724)
Capital expenditures	9,602	8,164	20,197	15,596
Investments in unconsolidated affiliates	17,701		17,701		$ 25,038
Total identifiable assets	1,106,635		1,106,635		1,041,699
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total identifiable assets	(66,412)		(66,412)		(69,193)
Domestic [Member]
Segment Reporting Information [Line Items]
Net sales	327,300	319,776	625,466	609,401
Gross profit	73,475	65,574	133,134	119,641
Segment Adjusted EBITDA	56,677	53,904	97,955	94,896
Interest expense, net	4,901	5,020	8,938	10,062
Depreciation and amortization	15,243	14,937	31,659	29,595
Equity in net (loss) income of unconsolidated affiliates	(12)	251	324	404
Capital expenditures	7,631	7,869	16,475	14,788
Investments in unconsolidated affiliates	3,075		3,075		7,957
Domestic [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total identifiable assets	1,010,171		1,010,171		942,267
International Segment [Member]
Segment Reporting Information [Line Items]
Net sales	56,029	46,938	106,987	83,747
Gross profit	10,260	4,189	23,187	10,980
Segment Adjusted EBITDA	4,266	1,296	14,799	5,432
Interest expense, net	46	24	295	33
Depreciation and amortization	2,124	1,437	4,346	2,805
Equity in net (loss) income of unconsolidated affiliates	(360)	(313)	(342)	(1,128)
Capital expenditures	1,971	$ 295	3,722	$ 808
Investments in unconsolidated affiliates	14,626		14,626		17,081
International Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total identifiable assets	$ 162,876		$ 162,876		$ 168,624

Business Segments Information59

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, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net income	$ 10,899	$ 16,844	$ 21,609	$ 25,410
Interest expense	4,947	5,044	9,233	10,095
Income tax expense (benefit)	4,368	8,926	11,739	16,819
Derivative fair value adjustment	5,773	67	9,534	163
Loss (gain) on disposal of assets or businesses	295	281	1,161	345
Segment Adjusted EBITDA	60,943	55,200	112,754	100,328
Domestic [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net income	11,222	17,603	16,764	25,446
Depreciation and amortization	15,243	14,937	31,659	29,595
Interest expense	4,901	5,020	8,938	10,062
Income tax expense (benefit)	5,884	10,897	(12,202)	(18,311)
Segment EBITDA	37,250	48,457	69,563	83,414
Derivative fair value adjustment	5,784	67	9,506	163
Loss (gain) on disposal of assets or businesses	289	251	1,341	311
Unconsolidated affiliates interest, tax, depreciation and amortization	260	291	546	540
Contingent consideration remeasurement	45	20	100	2
Stock-based compensation	724	2,131	1,449	4,377
ESOP deferred compensation	3,125	2,687	6,250	5,374
Loss on BaySaver step acquisition	490		490
Restatement costs	8,710		8,710
Transaction costs				715
Segment Adjusted EBITDA	56,677	53,904	97,955	94,896
International Segment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net income	3,259	1,394	9,515	2,992
Depreciation and amortization	2,124	1,437	4,346	2,805
Interest expense	46	24	295	33
Income tax expense (benefit)	(1,516)	(1,971)	463	1,492
Segment EBITDA	3,913	884	13,693	4,338
Derivative fair value adjustment	(11)		28
Foreign currency transaction gains	(151)	(205)	166	(75)
Loss (gain) on disposal of assets or businesses	6	30	(180)	34
Unconsolidated affiliates interest, tax, depreciation and amortization	509	587	1,092	1,135
Segment Adjusted EBITDA	$ 4,266	$ 1,296	$ 14,799	$ 5,432

Supplemental Cash Flow Inform60

Supplemental Cash Flow Information - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Supplemental Cash Flow Elements [Abstract]
Property, plant and equipment under capital lease and incurred lease obligations	$ 25,598	$ 20,158

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - USD ($)	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Mar. 31, 2015
Debt Instrument [Line Items]
Senior notes, outstanding			$ 100,000,000	$ 100,000,000
Revolving Credit Facility [Member] | ADS Inc [Member]
Debt Instrument [Line Items]
Credit facility, borrowing capacity			325,000,000
Revolving Credit Facility [Member] | ADS Mexicana [Member]
Debt Instrument [Line Items]
Credit facility, borrowing capacity			12,000,000
Bank Term Loans [Member]
Debt Instrument [Line Items]
Credit facility, borrowing capacity			$ 100,000,000
Subsequent Event [Member]
Debt Instrument [Line Items]
Cash dividend declared	$ 0.0195	$ 0.05