Advanced Drainage Systems (WMS) 10-K 29 Mar 16 2015 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2015	Feb. 29, 2016	Sep. 30, 2014
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Mar. 31, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	FY
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 Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		54,236,999
Entity Public Float			$ 388.2

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands		Mar. 31, 2015	Mar. 31, 2014
Current assets:
Cash		$ 3,623	$ 3,931	[1]
Receivables (less allowance for doubtful accounts of $5,423 and $4,490, respectively)		154,294	148,271	[1]
Inventories		269,842	259,891	[1]
Deferred income taxes and other current assets		18,972	14,465	[1]
Total current assets		446,731	426,558	[1]
Property, plant and equipment, net		377,067	350,351	[1]
Other assets:
Goodwill		98,679	88,017	[1]
Intangible assets, net		58,055	59,194	[1]
Other assets		61,167	65,447	[1]
Total assets		1,041,699	989,567	[1]
Current liabilities:
Current maturities of debt obligations		9,580	11,153	[1]
Current maturities of capital lease obligations		15,731	12,364	[1]
Accounts payable		111,893	110,972	[1]
Other accrued liabilities		54,349	43,085	[1]
Accrued income taxes		6,041	7,980	[1]
Total current liabilities		197,594	185,554	[1]
Long-term debt obligation		390,315	442,895	[1]
Long-term capital lease obligations		45,503	34,366	[1]
Deferred tax liabilities		65,088	66,333	[1]
Other liabilities		28,602	32,170	[1]
Total liabilities		$ 727,102	$ 761,318	[1]
Commitments and contingencies (see Note 15)				[1]
Mezzanine equity:
Redeemable common stock: $0.01 par value; 0 and 38,320 shares issued and outstanding, respectively	[1]		$ 549,119
Redeemable convertible preferred stock: $0.01 par value; 47,070 shares authorized; 44,170 shares issued; 25,639 and 26,129 shares outstanding, respectively		$ 320,490	291,720	[1]
Deferred compensation - unearned ESOP shares		(212,469)	(197,888)	[1]
Total mezzanine equity	[1]	108,021	642,951
Stockholders' equity (deficit):
Common stock: $0.01 par value; 1,000,000 and 148,271 authorized; 153,560 and 109,951 issued; 53,522 and 9,141 outstanding, respectively		12,393	11,957	[1]
Paid-in capital		700,977	12,438	[1]
Common stock in treasury, at cost		(445,065)	(448,439)	[1]
Accumulated other comprehensive loss		(15,521)	(6,830)	[1]
Retained deficit		(62,621)	(2,412)	[1]
Total ADS stockholders' equity (deficit)		190,163	(433,286)	[1]
Noncontrolling interest in subsidiaries		16,413	18,584	[1]
Total stockholders' equity (deficit)		206,576	(414,702)	[1]
Total liabilities, mezzanine equity and stockholders' equity (deficit)		$ 1,041,699	$ 989,567	[1]
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands		Mar. 31, 2015	Mar. 31, 2014
Allowance for doubtful accounts		$ 5,423	$ 4,490	[1]
Common stock, par value		$ 0.01	$ 0.01	[1]
Common stock, shares authorized		1,000,000,000	148,271,000	[1]
Common stock, shares issued		153,560,000	109,951,000	[1]
Common stock, shares outstanding		53,522,000	9,141,000	[1]
Redeemable Common Stock [Member]
Mezzanine equity, par value		$ 0.01	$ 0.01	[1]
Mezzanine equity, shares issued		0	38,320,000	[1]
Mezzanine equity, shares outstanding		0	38,320,000	[1]
Redeemable Convertible Preferred Stock [Member]
Mezzanine equity, par value		$ 0.01	$ 0.01	[1]
Mezzanine equity, shares authorized		47,070,000	47,070,000	[1]
Mezzanine equity, shares issued		44,170,000	44,170,000	[1]
Mezzanine equity, shares outstanding	[1]	25,639,000	26,129,000
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended												12 Months Ended
		Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2015		Mar. 31, 2014		Mar. 31, 2013
Income Statement [Abstract]
Net sales		$ 207,054	$ 279,871	$ 366,714	$ 326,434	$ 181,830	$ 260,644	$ 332,727	$ 292,579					$ 1,180,073		$ 1,067,780	[1]	$ 1,017,102	[1]
Cost of goods sold														973,960		873,810	[1]	829,141	[1]
Gross profit		26,314	49,178	69,763	60,858	12,690	59,342	65,588	56,350					206,113		193,970	[1]	187,961	[1]
Operating expenses:
Selling														78,981		74,042	[1]	71,805	[1]
General and administrative														58,749		59,761	[1]	49,601	[1]
Loss (gain) on disposal of assets or businesses														362		(2,863)	[1]	(951)	[1]
Intangible amortization														9,754		10,145	[1]	10,028	[1]
Income from operations														58,267		52,885	[1]	57,478	[1]
Other expense:
Interest expense														19,368		18,807	[1]	18,526	[1]
Other miscellaneous expense (income), net														14,370		(1,177)	[1]	103	[1]
Income before income taxes														24,529		35,255	[1]	38,849	[1]
Income tax expense														9,443		19,949	[1]	15,935	[1]
Equity in net loss (income) of unconsolidated affiliates														2,335		3,086	[1]	(266)	[1]
Net income		(13,734)	(1,953)	18,997	9,441	(16,168)	(2,818)	16,657	14,549					12,751	[1]	12,220	[1]	23,180	[1]
Less net income attributable to noncontrolling interest	[1]													4,131		3,593		2,520
Net income attributable to ADS		$ (13,465)	$ (3,325)	$ 16,844	$ 8,566	$ (14,210)	$ (4,877)	$ 14,740	$ 12,974					8,620		8,627	[1]	20,660	[1]
Change in fair value of Redeemable convertible preferred stock														(11,054)		(3,979)	[1]	(5,869)	[1]
Dividends to Redeemable convertible preferred stockholders														(661)		(10,139)	[1]	(735)	[1]
Dividends paid to unvested restricted stockholders														(11)		(418)	[1]	(52)	[1]
Net (loss) income available to common stockholders and participating securities														(3,106)		(5,909)	[1]	14,004	[1]
Undistributed income allocated to participating securities	[1]																	(1,127)
Net (loss) income available to common stockholders														$ (3,106)		$ (5,909)	[1]	$ 12,877	[1]
Weighted average common shares outstanding:
Basic														51,344		47,277	[1]	46,698	[1]
Diluted														51,344		47,277	[1]	47,249	[1]
Net (loss) income per share available to common stockholders:
Basic		$ (0.26)	$ (0.07)	$ 0.41	$ (0.21)	$ (0.41)	$ (0.21)	$ 0.21	$ 0.21					$ (0.06)		$ (0.12)	[1]	$ 0.28	[1]
Diluted		(0.26)	(0.07)	0.41	(0.21)	$ (0.41)	(0.21)	0.21	0.21					(0.06)		(0.12)	[1]	0.27	[1]
Cash dividends declared per share		$ 0.040	$ 0.040	$ 0	$ 0		$ 0.029	$ 0.029	$ 0.029	$ 0.026	$ 0.026	$ 0.026	$ 0.026	$ 0.08		$ 1.68	[1]	$ 0.10	[1]
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Consolidated Statements of Comp

Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands		12 Months Ended
		Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income	[1]	$ 12,751	$ 12,220	$ 23,180
Other comprehensive (loss) income:
Currency translation, before tax	[1]	(11,928)	(6,995)	2,628
Other, before tax	[1]		6	(41)
Total other comprehensive (loss) income, before tax	[1]	(11,928)	(6,989)	2,587
Tax attributes of items in other comprehensive (loss) income:
Other	[1]		(2)	16
Total tax (expense) benefit	[1]		(2)	16
Comprehensive income	[1]	823	5,229	25,783
Less other comprehensive (loss) income attributable to noncontrolling interest, net of tax	[1]	(3,237)	(1,242)	1,159
Less net income attributable to noncontrolling interest	[1]	4,131	3,593	2,520
Total comprehensive (loss) income attributable to ADS	[1]	$ (71)	$ 2,878	$ 22,104
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands		12 Months Ended
		Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013
Cash Flows from Operating Activities
Net income	[1]	$ 12,751	$ 12,220		$ 23,180
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		65,472	63,674	[1]	63,102	[1]
Deferred income taxes		(15,367)	(7,750)	[1]	(7,152)	[1]
Loss (gain) on disposal of assets or businesses		362	(2,863)	[1]	(951)	[1]
ESOP and stock-based compensation		18,024	35,033	[1]	9,363	[1]
Amortization of deferred financing charges		1,410	1,591	[1]	2,008	[1]
Fair market value adjustments to derivatives		7,746	(53)	[1]	(4)	[1]
Other operating activities		937	7,978	[1]	(876)	[1]
Changes in working capital (see Note 24)		(16,956)	(37,420)	[1]	(13,317)	[1]
Net cash provided by operating activities		74,379	72,410	[1]	75,353	[1]
Cash Flows from Investing Activities
Capital expenditures		(31,479)	(39,621)	[1]	(38,756)	[1]
Proceeds from disposition of assets or businesses		538	9,302	[1]	1,044	[1]
Cash paid for acquisitions, net of cash acquired		(36,385)			(4,839)	[1]
Investment in unconsolidated affiliate		(7,566)	(6,375)	[1]	(200)	[1]
Additions to capitalized software		(601)	(1,312)	[1]	(1,079)	[1]
Other investing activities		(600)	(706)	[1]	(966)	[1]
Net cash used in investing activities		(76,093)	(38,712)	[1]	(44,796)	[1]
Cash Flows from Financing Activities
Proceeds from Revolving Credit Facility		389,200	490,703	[1]	331,200	[1]
Payments on Revolving Credit Facility		(432,200)	(429,660)	[1]	(340,000)	[1]
Proceeds from Term Loan	[1]		100,000
Payments on Term Loan		(6,250)	(80,000)	[1]	(10,000)	[1]
Proceeds from Senior Notes	[1]		25,000
Payments of notes, mortgages, and other debt		(4,903)	(1,942)	[1]	(1,882)	[1]
(Payments) loan on CSV life insurance policies		(872)			7,693	[1]
Payments on capital lease obligation		(9,278)	(12,240)	[1]	(9,342)	[1]
Payments for deferred initial public offering costs		(6,479)
Debt issuance costs	[1]		(2,311)
Proceeds from initial public offering of common stock, net of underwriter discounts and commissions		79,131
Cash dividends paid		(7,869)	(115,058)	[1]	(6,155)	[1]
Redemption of Redeemable convertible preferred stock	[1]		(4,428)		(3,031)
Purchase of treasury stock - common		(3)	(1,063)	[1]	(249)	[1]
Other financing activities		1,314	(110)	[1]	428	[1]
Net cash provided by (used in) financing activities		1,791	(31,109)	[1]	(31,338)	[1]
Effect of exchange rate changes on cash		(385)	(19)	[1]	60	[1]
Net change in cash		(308)	2,570	[1]	(721)	[1]
Cash at beginning of year	[1]	3,931	1,361		2,082
Cash at end of year		$ 3,623	$ 3,931	[1]	$ 1,361	[1]
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Consolidated Statement of Stock

Consolidated Statement of Stockholders' Equity (Deficit) - 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 Earnings (Deficit) [Member]	Total ADS Stockholders' Equity (Deficit) [Member]	Non-controlling Interest in Subsidiaries [Member]
Beginning Balance, Value (As Previously Reported [Member]) at Mar. 31, 2012		$ (267,849)		$ 11,957	$ (449,583)	$ 39,661	$ (1,375)	$ 110,863	$ (288,477)	$ 20,628
Beginning Balance, Value at Mar. 31, 2012		(275,685)		11,957	(449,583)	38,655	(2,525)	110,233	(291,263)	15,578
Beginning Balance, Value at Mar. 31, 2012	[1]	(275,685)		11,957	(449,583)	38,655	(2,525)	110,233	(291,263)	15,578
Net income | As Previously Reported [Member]		30,178
Net income		23,180	[1]					20,660	20,660	2,520
Other comprehensive income		2,603					1,444		1,444	1,159
Redeemable convertible preferred stock dividends		(625)						(625)	(625)
Common stock dividend		(4,817)						(4,817)	(4,817)
Dividend paid to noncontrolling interest holder		(713)								(713)
Compensation		(282)				(282)			(282)
Dividend		(110)						(110)	(110)
Exercise of common stock options		1,033			1,436	(403)			1,033
Redemption of common shares to exercise stock options					(805)	805
Stock-based compensation		419				419			419
Restricted stock awards		1,462			630	832			1,462
Redemption of redeemable convertible preferred stock		0		0	0	0	0	0	0	0
Purchase of common stock		(249)			(249)				(249)
Adjustments to redeemable convertible preferred stock fair value measurement		(5,869)						(5,869)	(5,869)
Adjustments to redeemable common stock fair value measurement		(40,270)						(40,270)	(40,270)
Ending Balance, Value at Mar. 31, 2013	[1]	(299,923)		$ 11,957	$ (448,571)	40,026	(1,081)	79,202	(318,467)	18,544
Beginning Balance, Shares (As Previously Reported [Member]) at Mar. 31, 2012				109,979	101,572
Beginning Balance, Shares at Mar. 31, 2012	[1]			109,979	101,572
Exercise of common stock options					(325)
Redemption of common shares to exercise stock options					66
Restricted stock awards					(141)
Purchase of common stock					19
Ending Balance, Shares at Mar. 31, 2013	[1]			109,979	101,191
Cumulative restatement adjustments		(7,836)				(1,006)	(1,150)	(630)	(2,786)	(5,050)
Net income | As Previously Reported [Member]		12,874
Net income		12,220	[1]					8,627	8,627	3,593
Other comprehensive income		(6,991)					(5,749)		(5,749)	(1,242)
Redeemable convertible preferred stock dividends		(10,021)						(10,021)	(10,021)
Common stock dividend		(80,102)						(80,102)	(80,102)
Dividend paid to noncontrolling interest holder		(2,311)								(2,311)
Compensation		(203)				(203)			(203)
Dividend		(118)						(118)	(118)
Exercise of common stock options		1,035			$ 1,896	(861)			1,035
Redemption of common shares to exercise stock options					(1,187)	1,187
Stock-based compensation		1,748				1,748			1,748
Restricted stock awards		1,849			486	1,363			1,849
Redemption of redeemable convertible preferred stock		0		$ 0	0	0	0	0	0	0
Purchase of common stock		(1,063)			(1,063)				(1,063)
Reclassification of common stock to redeemable common stock		(385)				(385)			(385)
Adjustments to redeemable convertible preferred stock fair value measurement		(3,979)				(3,979)			(3,979)
Adjustments to redeemable common stock fair value measurement		(26,458)				(26,458)			(26,458)
Ending Balance, Value at Mar. 31, 2014	[1]	$ (414,702)		$ 11,957	$ (448,439)	12,438	(6,830)	(2,412)	(433,286)	18,584
Exercise of common stock options					(428)
Redemption of common shares to exercise stock options					85
Restricted stock awards					(118)
Purchase of common stock		80			80
Reclassification of common stock to redeemable common stock				(28)
Ending Balance, Shares at Mar. 31, 2014	[1]			109,951	100,810
Beginning Balance, Value at Mar. 31, 2014	[1]	$ (414,702)
Net income		12,751	[1]					8,620	8,620	4,131
Other comprehensive income		(11,928)					(8,691)		(8,691)	(3,237)
Redeemable convertible preferred stock dividends		(534)						(534)	(534)
Common stock dividend		(4,270)						(4,270)	(4,270)
Dividend paid to noncontrolling interest holder		(3,065)								(3,065)
Compensation		3,003				3,003			3,003
Dividend		(127)						(127)	(127)
Exercise of common stock options		1,986			$ 1,048	938			1,986
Redemption of common shares to exercise stock options					(93)	93
Stock-based compensation		3,757				3,757			3,757
Tax benefit resulting from exercise of certain stock-based compensation awards		330				330			330
Restricted stock awards		1,462			743	719			1,462
Initial Public Offering (IPO)		72,196		$ 53		72,143			72,196
Reclassification of liability classified stock options upon IPO		1,522				1,522			1,522
Purchase of common stock		(3)			(3)				(3)
ESOP distributions in common stock		6,133			1,679	4,454			6,133
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 Mar. 31, 2015	[1]	$ 206,576		$ 12,393	$ (445,065)	$ 700,977	$ (15,521)	$ (62,621)	$ 190,163	$ 16,413
Exercise of common stock options					(235)
Redemption of common shares to exercise stock options					7
Restricted stock awards					(167)
Initial Public Offering (IPO)				5,289
ESOP distributions in common stock					(377)
Termination of redemption feature upon IPO				38,320
Ending Balance, Shares at Mar. 31, 2015	[1]			153,560	100,038
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Consolidated Statement of Stoc8

Consolidated Statement of Stockholders' Equity (Deficit) (Parenthetical) - $ / shares

3 Months Ended

12 Months Ended

Mar. 31, 2015

Dec. 31, 2014

Sep. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2015

Mar. 31, 2014

Mar. 31, 2013

Statement of Stockholders' Equity [Abstract]

Common stock dividend per share

$ 0.040

$ 0.040

$ 0

$ 0

$ 0.029

$ 0.029

$ 0.029

$ 0.026

$ 0.026

$ 0.026

$ 0.026

$ 0.08

$ 1.68

[1]

$ 0.10

[1]

[1]

See Note 2. Restatement of Previously Issued Financial Statements.

Consolidated Statement of Mezza

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]
Beginning Balance, Value (As Previously Reported [Member]) at Mar. 31, 2012		$ 557,563	$ 482,006	$ 264,429		$ (188,872)
Beginning Balance, Value at Mar. 31, 2012	[1]	557,563	482,006	264,429		(188,872)
Compensation		7,565				7,565
Dividend		110				110
Redemption of redeemable convertible preferred stock		(3,031)		(3,031)
Adjustments to redeemable convertible preferred stock fair value measurement		5,869		21,149		(15,280)
Adjustments to redeemable common stock fair value measurement		40,270	40,270
Ending Balance, Value at Mar. 31, 2013	[1]	608,346	$ 522,276	$ 282,547		$ (196,477)
Beginning Balance, Shares (As Previously Reported [Member]) at Mar. 31, 2012			38,292	26,853		19,181
Beginning Balance, Shares at Mar. 31, 2012	[1]		38,292	26,853		19,181
Compensation						(711)
Dividend						(9)
Redemption of redeemable convertible preferred stock				(306)
Ending Balance, Shares at Mar. 31, 2013	[1]		38,292	26,547		18,461
Compensation		8,093				$ 8,093
Dividend		118				118
Redemption of redeemable convertible preferred stock		(4,428)		$ (4,428)
Reclassification of common stock to redeemable common stock		385	$ 385
Adjustments to redeemable convertible preferred stock fair value measurement		3,979		13,601		(9,622)
Adjustments to redeemable common stock fair value measurement		26,458	26,458
Ending Balance, Value (As Previously Reported [Member]) at Mar. 31, 2014		642,951
Ending Balance, Value at Mar. 31, 2014	[1]	642,951	$ 549,119	$ 291,720		$ (197,888)
Compensation						(725)
Dividend						(9)
Redemption of redeemable convertible preferred stock				(418)
Reclassification of common stock to redeemable common stock			28
Ending Balance, Shares at Mar. 31, 2014	[1]		38,320	26,129		17,727
Compensation		9,141				$ 9,141
Dividend		127				127
ESOP distributions in common stock		(6,133)		$ (6,133)
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 Mar. 31, 2015	[1]	$ 108,021		$ 320,490		$ (212,469)
Compensation						(731)
Dividend						(6)
ESOP distributions in common stock				(490)
Termination of redemption feature upon IPO			(38,320)
Ending Balance, Shares at Mar. 31, 2015			0	25,639	[1]	16,990	[1]
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Background and Summary of Signi

Background and Summary of Significant Accounting Policies	12 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Background and Summary of Significant Accounting Policies	1. BACKGROUND AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Organization Advanced Drainage Systems, Inc. and subsidiaries (collectively 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. Our fiscal year begins on April 1 and ends on March 31. Unless otherwise noted, references to “year” pertain to our fiscal year. For example, 2015 refers to fiscal 2015, which is the period from April 1, 2014 to March 31, 2015. 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. 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 of common stock. 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 of $6,935, we used the net proceeds of $72,196 to reduce the outstanding indebtedness under the revolving portion of our credit facility. The common stock is listed on the New York Stock Exchange 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 (“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. Principles of Consolidation Our consolidated financial statements include the Company, our wholly owned subsidiaries, our majority owned subsidiaries, including ADS Mexicana, S.A. de C.V. (“ADS Mexicana”), 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 Consolidated Balance Sheets and the related equity in earnings from these investments are included in Equity in net loss (income) of unconsolidated affiliates in our Consolidated Statements of Operations. All intercompany balances and transactions have been eliminated in consolidation. Estimates The preparation of our consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingencies and liabilities at the balance sheet date and the reported amounts of revenues and expenses during the reporting period. Significant estimates include, but are not limited to, our allowance for doubtful accounts, inventory, useful lives of our property, plant and equipment and amortizing intangible assets, determination of the proper accounting for leases, accounting for investments, evaluation of goodwill, intangible assets and other long-lived assets for impairment, accounting for stock-based compensation and our ESOP, valuation of our Redeemable common stock and Redeemable convertible preferred stock, determination of allowances for sales returns, rebates and discounts, determination of the valuation allowance, if any, on deferred tax assets, and reserves for uncertain tax positions. Management’s estimates and assumptions are evaluated on an ongoing basis and are based on historical experience, current conditions and available information. Management believes the accounting estimates are appropriate and reasonably determined; however, due to the inherent uncertainties in making these estimates, actual results could differ from those estimates. Allowance for Doubtful Accounts Credit is extended to customers based on an evaluation of their financial condition and collateral is generally not required. The evaluation of the customer’s financial condition is performed to reduce the risk of loss. Accounts receivable are evaluated for collectability based on numerous factors, including the length of time individual receivables are past due, past transaction history with customers, their credit worthiness and the economic environment. An allowance for doubtful accounts is estimated as a percentage of aged receivables. This estimate is periodically adjusted when management becomes aware of a specific customer’s inability to meet its financial obligations (e.g., bankruptcy filing) or as a result of changes in historical collection patterns. Inventories Inventories are stated at the lower of cost or market value. The Company’s inventories are maintained on the first-in, first-out (“FIFO”) method. Costs include the cost of acquiring materials, including in-bound freight from vendors and freight incurred for the transportation of raw materials or finished goods between the Company’s manufacturing plants and its distribution centers, direct and indirect labor, factory overhead and certain corporate overhead costs related to the production of inventory. The portion of fixed manufacturing overhead that relates to capacity in excess of our normal capacity is expensed in the period in which it is incurred and is not included in inventory. Market value of inventory is established based on the lower of cost or estimated net realizable value, with consideration given to deterioration, obsolescence, and other factors. The Company periodically evaluates the carrying value of inventories and adjustments are made whenever necessary to reduce the carrying value to net realizable value. Property, Plant and Equipment and Depreciation Method Property, plant and equipment are recorded at cost less accumulated depreciation, with the exception of assets acquired through acquisitions, which are initially recorded at fair value. Equipment acquired under capital lease is recorded at the lower of fair market value or the present value of the future minimum lease payments. Depreciation is computed for financial reporting purposes using the straight-line method over the estimated useful lives of the related assets or the lease term, if shorter, as follows: Years Buildings 40 Machinery and equipment 3 — 15 Leasehold improvements Shorter of useful Costs of additions and major improvements are capitalized, whereas maintenance and repairs that do not improve or extend the life of the asset are charged to expense as incurred. When assets are retired or disposed, the cost and related accumulated depreciation are removed from the asset accounts and any resulting gain or loss is reflected in Loss (gain) on disposal of assets or businesses in our Consolidated Statements of Operations. Construction in progress is also recorded at cost and includes capitalized interest, capitalized payroll costs and related costs such as taxes and other fringe benefits. Interest capitalized was $518, $611, and $1,036 during the fiscal years ended March 31, 2015, 2014 and 2013, respectively. Goodwill The Company records acquisitions resulting in the consolidation of an enterprise using the acquisition method of accounting. Under this method, we record the assets acquired, including intangible assets that can be identified, and liabilities assumed based on their estimated fair values at the date of acquisition. The purchase price in excess of the fair value of the identifiable assets acquired and liabilities assumed is recorded as goodwill. Goodwill is reviewed annually for impairment as of March 31 or whenever events or changes in circumstances indicate the carrying value may be greater than fair value. The goodwill impairment analysis is comprised of two steps. The first step requires the comparison of the fair value of the applicable reporting unit to its respective carrying value. If the fair value of the reporting unit exceeds the carrying value of the net assets assigned to that unit, goodwill is not considered impaired and the Company is not required to perform further testing. If the carrying value of the net assets assigned to the reporting unit exceeds the fair value of the reporting unit, then the Company must perform the second step of the impairment test in order to determine the implied fair value of the reporting unit’s goodwill. If the carrying value of a reporting unit’s goodwill exceeds its implied fair value, then we would record an impairment loss equal to the difference. With respect to this testing, a reporting unit is a component of the Company for which discrete financial information is available and regularly reviewed by management. Implied fair value of goodwill is determined by considering both the income and market approach. Determining the fair value of a reporting unit is judgmental in nature and involves the use of significant estimates and assumptions. These estimates and assumptions include revenue growth rates and operating margins used to calculate projected future cash flows, risk-adjusted discount rates, future economic and market conditions, and determination of appropriate market comparables. The fair value estimates are based on assumptions management believes to be reasonable, but are inherently uncertain. The Company did not incur any impairment charges for Goodwill in the fiscal years ended March 31, 2015, 2014 or 2013. Intangible Assets Intangible Assets — Definite-Lived Definite-lived intangible assets are amortized using the straight-line method over their estimated useful lives, and are tested for recoverability whenever events or changes in circumstances indicate that carrying amounts of the asset group may not be recoverable. Asset groups are established primarily by determining the lowest level of cash flows available. If the estimated undiscounted future cash flows are less than the carrying amounts of such assets, an impairment loss is recognized to the extent the fair value of the asset less any costs of disposition is less than the carrying amount of the asset. Determining the fair value of these assets is judgmental in nature and involves the use of significant estimates and assumptions. Intangible Assets — Indefinite-Lived 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. Determining the fair value of these assets is judgmental in nature and involves the use of significant estimates and assumptions. The Company bases its fair value estimates on assumptions it believes to be reasonable, but that are inherently uncertain. To estimate the fair value of these indefinite-lived intangible assets, the Company uses an income approach, which utilizes a market derived rate of return to discount anticipated performance. An impairment loss is recognized when the estimated fair value of the intangible asset is less than the carrying value. The Company did not incur any impairment charges for Intangible assets in the fiscal years ended March 31, 2015, 2014 or 2013. Other Assets Other assets include investments in unconsolidated affiliates accounted for under the equity method, capitalized software development costs, deposits, deferred financing costs, cash surrender value of officer life insurance on key senior management executives, Central parts, and other. The Company capitalizes development costs for internal use software. Capitalization of software development costs begins in the application development stage and ends when the asset is placed into service. The Company amortizes such costs using the straight-line method over estimated useful lives of 2 to 10 years, which is included in General and administrative expense, Selling expense or Cost of goods sold within our Consolidated Statements of Operations depending on the nature of the asset and its intended use. Amortization expense related to deferred financing costs is included in Interest expense within our Consolidated Statements of Operations. Central parts represent spare production equipment items which are used to replace worn or broken production equipment parts and help reduce the risk of prolonged equipment outages. The cost of Central parts is amortized on a straight line basis over estimated useful lives of 8 to 30 years. Other assets as of the fiscal years ended March 31 consisted of the following: (Amounts in thousands) 2015 2014 Investments in unconsolidated affiliates $ 25,038 $ 23,624 Capitalized software development costs, net 7,276 10,511 Deposits 4,947 5,192 Deferred financing costs 4,543 5,953 Cash surrender value of officer life insurance 9,953 8,893 Central parts 2,108 1,910 Other 7,302 9,364 Total other assets $ 61,167 $ 65,447 The following table sets forth amortization expense related to Other assets in each of the fiscal years ending March 31: (Amounts in thousands) 2015 2014 2013 Capitalized software development costs $ 3,550 $ 3,270 $ 3,539 Deferred financing costs 1,410 1,591 2,008 Central Parts 55 43 41 Other 1,977 1,986 1,970 Leases Leases are reviewed for capital or operating classification at their inception. The Company uses the lower of the rate implicit in the lease or its incremental borrowing rate in the assessment of lease classification and assumes the initial lease term includes cancellable and renewal periods that are reasonably assured. For leases classified as capital leases at lease inception, we record a capital lease asset and lease financing obligation equal to the lesser of the present value of the minimum lease payments or the fair market value of the leased asset. The capital lease asset is recorded in Property, plant and equipment, net and amortized to its expected residual value at the end of the lease term using the straight-line method, and the lease financing obligation is amortized using the interest method over the lease term with the rental payments being allocated to principal and interest. For leases classified as operating leases, we record rent expense over the lease term using the straight-line method. Foreign Currency Translation Assets and liabilities of foreign subsidiaries with a functional currency other than the U.S. dollar are translated into U.S. dollars at the current rate of exchange on the last day of the reporting period. Revenues and expenses are translated at a monthly average exchange rate and equity transactions are translated using either the actual exchange rate on the day of the transaction or a monthly average historical exchange rate. Net Sales The Company sells pipe products and related water management products. ADS ships products to customers predominantly by internal fleet and to a lesser extent by third-party carriers. The Company does not provide any additional revenue generating services after product delivery. Sales, net of sales tax and allowances for returns, rebates and discounts are recognized from product sales when persuasive evidence of an arrangement exists, delivery has occurred, the price to the buyer is fixed or determinable and collectability is reasonably assured. ADS does not ship an order until a customer purchase order or sales order has been received that includes the pricing and quantity of the products in the order, which establishes both persuasive evidence of an arrangement and that the price is fixed or determinable. Title to the products and risk of loss generally passes to the customer upon delivery. ADS performs credit check procedures on all new customers, establishes credit limits accordingly, and monitors the creditworthiness of existing customers, which is the basis for concluding that collectability is reasonably assured. Shipping Costs Shipping costs are incurred to physically move our raw materials, tooling and products between manufacturing and distribution facilities and from our production or distribution facilities to our customers. Shipping costs for the fiscal years ended March 31, 2015, 2014 and 2013 were $120,993, $111,862 and $110,402, respectively, and are included in Cost of goods sold. In certain instances, we bill shipping costs to our customers. Shipping costs billed to customers were $9,282, $8,864 and $9,133 during 2015, 2014 and 2013, respectively, and are included in Net sales. Stock-Based Compensation ADS has several programs for stock-based payments to employees and directors. Equity-classified awards are measured based on the grant-date estimated fair value of each award, net of estimated forfeitures, and liability-classified awards are re-measured at fair value, net of estimated forfeitures, at each reporting date. Compensation expense is recognized over the employee’s requisite service period, which is generally the vesting period of the grant. The fair value of each stock option granted is estimated using the Black-Scholes option pricing model. Compensation expense is recorded for new awards and existing awards that are modified, repurchased, or forfeited. For details of our stock-based compensation award programs, see Note 20. Stock-Based Compensation. Advertising We expense advertising costs as incurred. Advertising costs are recorded in Selling expenses in the Consolidated Statements of Operations. The total advertising costs were $2,477, $2,335 and $2,731 for the fiscal years ended March 31, 2015, 2014 and 2013, respectively. Self-Insurance The Company is self-insured for short term disability and medical coverage it provides for substantially all eligible employees. The Company is self-insured for medical claims up to the individual and aggregate stop-loss coverage limits. Management accrues for claims incurred but not reported based on our estimate of future claims related to events that occurred prior to our fiscal year end if we have not met the aggregate stop-loss coverage limit. Amounts contributed totaled $32,002, $29,484, and $30,775 for the fiscal years ended March 31, 2015, 2014 and 2013, respectively, of which employees contributed $4,067, $4,032 and $806, respectively. ADS is also self-insured for various other general insurance programs to the extent of the applicable deductible limits on the Company’s insurance coverage. These programs include primarily automobile, general liability and employment practices coverage with deductibles ranging from $250 to $500 per occurrence or claim incurred. Amounts expensed during the period, including an estimate for claims incurred but not reported at year end, were $569, $447 and $934, for the years ended March 31, 2015, 2014 and 2013, respectively. ADS is also self-insured for workers’ compensation insurance with stop-loss coverage for claims that exceed $250 per incident up to the respective state statutory limits. Amounts expensed, including an estimate for claims incurred but not reported, were $1,369, $1,395 and $1,184 for the fiscal years ended March 31, 2015, 2014 and 2013, respectively. Income Taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized and represent the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. They are measured using the enacted tax rates expected to apply to taxable income in the years in which the related temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. The deferred income tax provision represents the change during the reporting period in the deferred tax assets and deferred tax liabilities. Penalties and interest recorded on income taxes payable are recorded as part of Income tax expense. The Company determines whether an uncertain tax position of the Company is more likely than not to be sustained upon examination, including resolution of any related appeals or litigation process, based upon the technical merits of the position. For tax positions meeting the more likely than not threshold, the tax amount recognized in the financial statements is the amount that has a greater than 50% likelihood of being realized upon ultimate settlement with the relevant taxing authority. Fair Values The fair value framework requires the categorization of assets and liabilities into three levels based upon assumptions (inputs) used to price the assets or liabilities. Level 1 provides the most reliable measure of fair value, whereas Level 3 generally requires significant management judgment. The three levels are defined as follows: Level 1 — Unadjusted quoted prices in active markets for identical assets and liabilities. Level 2 — Observable inputs other than those included in Level 1. For example, quoted prices for similar assets or liabilities in active markets or quoted prices for identical assets or liabilities in inactive markets. Level 3 — Unobservable inputs reflecting management’s own assumptions about the inputs used in pricing the asset or liability. The carrying amounts of current financial assets and liabilities approximate fair value because of the immediate or short-term maturity of these items. The carrying and fair values of the Company’s Senior Notes (discussed in Note 13. Debt) were $100,000 and $103,590, respectively, as of March 31, 2015 and $100,000 and $104,511, respectively, at March 31, 2014. The fair value of the Senior Notes was determined based on a comparison of the interest rate and terms of such borrowings to the rates and terms of similar debt available for the period. Management believes the carrying amount on the remaining long-term debt is not materially different from its fair value as the interest rates and terms of the borrowings are similar to currently available borrowings. The categorization of the framework used to evaluate this debt is considered Level 2. See also Note 9. Fair Value Measurement to these financial statements. Concentrations of Risk We have a large, active customer base of over 18,000 customers with one customer representing more than 10% of annual net sales. Such customer accounted for 10.7%, 10.6% and 9.7% of fiscal year 2015, 2014 and 2013 net sales, respectively. Our customer base is diversified across the range of end markets that we serve. Financial instruments that potentially subject the Company to a concentration of credit risk consist principally of Receivables. The Company provides its products to customers based on an evaluation of the customers’ financial condition, generally without requiring collateral. Exposure to losses on Receivables is principally dependent on each customer’s financial condition. The Company performs ongoing credit evaluations of its customers. The Company monitors the exposure for credit losses and maintains allowances for anticipated losses. Concentrations of credit risk with respect to Receivables are limited due to the large number of customers comprising the Company’s customer base and their dispersion across many different geographies although one customer accounts for approximately 14% of our receivables at March 31, 2015. Derivatives We recognize derivative instruments as either assets or liabilities and measure those instruments at fair value. We use interest rate swaps, commodity options in the form of collars and swaps, and foreign currency forward contracts to manage our various exposures to interest rate, commodity price, and exchange rate fluctuations. These instruments do not qualify for hedge accounting treatment and therefore, gains and losses from contract settlements and changes in fair value of the derivative instruments are recognized in Other miscellaneous expense (income), net in the Consolidated Statements of Operations. Our policy is to present all derivative balances on a gross basis. The Company also has forward purchase agreements in place with certain resin suppliers for virgin polyethylene resin. The agreements specify a fixed amount of virgin resin material to be purchased at a fixed price for a given period of time in quantities the Company will use in the normal course of business, and therefore, are not subject to the guidance provided in ASC 810-15. The cost of such resin is recognized in Cost of goods sold in the Consolidated Statements of Operations. Recent Accounting Pronouncements Revenue Recognition Consolidation Debt Issuance Costs Measurement of Inventory Business Combinations — Deferred Tax Assets and Liabilities Equity Investments and Financial Liabilities Leases With the exception of pronouncements described above, there have been no new accounting pronouncements that have significance, or potential significance, to our consolidated financial statements.

Restatement of Previously Issue

Restatement of Previously Issued Financial Statements	12 Months Ended
	Mar. 31, 2015
Accounting Changes and Error Corrections [Abstract]
Restatement of Previously Issued Financial Statements	2. RESTATEMENT OF PREVIOUSLY ISSUED FINANCIAL STATEMENTS Background In June of 2015, in connection with the preparation of the Company’s consolidated annual financial statements for the fiscal year ended March 31, 2015, certain errors related to the Company’s accounting treatment for its transportation and equipment leases and inventory methodology were identified. As the Company completed additional accounting review procedures, it identified additional errors related to long-lived assets, ADS Mexicana and certain other miscellaneous items. Due to these errors, as further described below, and based upon the recommendation of management, the Audit Committee of the Company’s Board of Directors (the “Audit Committee”) determined on August 14, 2015 that the Company’s previously issued audited financial statements should no longer be relied upon. As a result of the foregoing the Company has restated its consolidated financial statements for the fiscal years ended March 31, 2014 and 2013, as well as the quarterly periods for the first three quarters of the fiscal year ended March 31, 2015 and for all of the quarterly periods in the fiscal year ended March 31, 2014. The restatement also affects periods prior to fiscal year 2013, with the cumulative effect of the errors reflected as an adjustment to the fiscal year 2013 opening stockholders’ equity (deficit) balance. Accounting Adjustments The following is a discussion of the significant accounting adjustments that were made to the Company’s historical consolidated financial statements. Lease Accounting Adjustments The Company leases real estate and equipment under various lease agreements. Historically, assets leased under the Company’s transportation and equipment leasing program (“Fleet Leases”) have been classified as operating leases. However, based upon a reexamination of the Company’s historic assumptions, estimates and judgments with respect to lease accounting, as further described below, the Company has determined that a substantial portion of the Fleet Leases should instead be classified as capital leases. As part of the Company’s recent review of its Fleet Leases, the Company reexamined the minimum lease payment classification test (the “MLP Test”) set forth in ASC Topic 840, which is one of four criteria used to determine lease classification. The MLP Test requires a lease to be capitalized when the present value of the minimum lease payments is greater than or equal to 90% of the fair market value of leased property at lease inception. The Company had historically included in the minimum lease payments used for purposes of the MLP Test only those payments related to the non-cancellable period identified in the lease agreement. However, the Company has now determined that the minimum lease payments should also include payments related to certain reasonably assured renewal periods included in the lease agreement. Under that revised analysis of significant lease arrangements, the Company has concluded that the present value of the minimum lease payments exceeded 90% of the fair market value for certain leased assets, requiring a modification of treatment from operating to capital leases. The Company has also reexamined its historic assumptions, estimates and judgments with respect to the accounting for real estate and aircraft leases that were previously classified as operating leases. In many cases, the Company has determined that the leases should instead be classified as capital leases due to the inclusion of contingent penalty amounts in the minimum lease payments used for purposes of the MLP Test. The errors in lease classification have been corrected in the restated consolidated financial statements, whereby at lease inception the Company has recorded a capital lease asset and lease financing obligation equal to the lesser of the present value of the minimum lease payments or the fair market value of the leased asset. The capital lease asset is recorded in Property, plant and equipment, net and amortized to its expected residual value at the end of the lease term using the straight-line method, and the lease financing obligation is amortized using the effective interest method over the lease term with the rental payments being allocated to principal and interest. Inventory Accounting Adjustments The Company identified and corrected certain errors related to its accounting for inventory. The errors primarily related to the Company’s incorrect historical calculation of inventory costing based on the FIFO method, the inappropriate capitalization of certain inter-plant freight expense and other overhead costs, as well as the misclassification of certain overhead costs between general and administrative expense and cost of goods sold. The Company also identified and corrected certain errors related to ADS Mexicana’s accounting for inventory. With respect to inventory costing errors related to the application of the FIFO method, the Company had historically utilized a simplified method of calculating inventory cost based on an overall average price near period end for all products, particularly with respect to the resin material cost component of inventory. However, this simplified method for establishing inventory cost became less precise over time primarily as a result of the significant increase in the number of raw materials purchased by the Company. The imprecision in this simplified method became even greater during fiscal 2015 when raw material pricing became particularly volatile. In response, the Company has developed a more precise model to value the resin component of ending inventory on hand under the FIFO method. There were multiple contributing factors related to the errors in the capitalization of overhead costs. First, the Company historically applied a simplified method of capitalizing general and administrative overhead costs to inventory by using a consistent capitalization rate across all general and administrative functions, such as the purchasing, human resources and information technology functions, regardless of the actual amount of each function’s efforts that were related to the inventory production process. In addition, certain amounts were capitalized from Cost of goods sold into inventory without a corresponding reclassification entry from general and administrative expenses. In response, the Company developed an appropriate allocation of general and administrative overhead costs to inventory based on the specific amount of each function’s efforts that were related to the inventory production process. Finally, certain capitalized overhead costs were determined to be inappropriate as they were unrelated to the inventory production process or the use of estimates that did not accurately reflect actual costs. The loss on the financial fuel hedge was determined to be Other miscellaneous expense (income), net rather than Cost of goods sold, and therefore was not capitalized as an inventoriable cost. Minor corrections were made to the related inventory turn calculation to be more consistent with other costs capitalized into ending inventory. Long-Lived Assets Accounting Adjustments The Company identified and corrected certain errors related to the accounting for long-lived assets included in Property, plant and equipment, Goodwill, Intangible assets and Other assets in the Consolidated Balance Sheets. These errors primarily related to either the initial capitalization, subsequent depreciation or amortization, or the timing or amount of impairment charges. The specific nature of each item in this category of adjustments is described as follows: • The adjustments to Property, plant and equipment primarily related to the write-off of certain components of equipment that had been replaced, fully or partially, by fixed asset additions, and the write-off of certain amounts that were determined to not qualify for initial capitalization. In addition, it was determined that the depreciable lives should be revised for certain equipment. • The Hancor trademark intangible asset adjustment represents an increase in the impairment charge originally recorded in the fiscal year ended March 31, 2012, as well as the resulting decrease in the subsequent amortization expense for the asset. • The adjustments to Other assets related to capitalized software development costs are primarily related to the write-off of certain amounts that were determined to not qualify for initial capitalization, corrections of in-service dates, and revised amortization lives on some assets. • The adjustments to Other assets related to Central parts are necessary to properly value the assets on hand at historic cost, and once placed into service, amortize the assets over their respective useful lives. • The adjustments also include the reclassification from Intangible assets to Other assets of an asset recorded at the time of the disposal of a business in fiscal year 2012 related to a favorable supply contract, as well as the reclassification from Intangible Assets to Goodwill of certain purchase price recorded at the time of the Quality Culvert, Inc. acquisition in fiscal year 2012, and the resulting impact on amortization expense. ADS Mexicana Accounting Adjustments In October 2015, members of the Company’s management became aware of transactions involving ADS Mexicana that ADS Mexicana personnel initially brought to the attention of the Company for further review to confirm whether these transactions were appropriately characterized. The ADS Mexicana transactions in question included an aircraft leasing arrangement, a real estate leasing arrangement and several services arrangements that involved ADS Mexicana related parties. Once brought to the attention of the Company, management promptly undertook a review to determine whether such transactions were properly recorded and/or characterized and to ensure that such transactions and their financial impact was appropriately reflected in the Company’s consolidated financial statements. After receiving a preliminary report from management on the breadth and scope of the issues, the Audit Committee in November 2015 authorized independent counsel and its forensic consulting firm to conduct an independent investigation. The investigation involved the interview of members of the Company’s finance staff as well as finance and non-finance staff of ADS Mexicana, in addition to a review of the financial and accounting records of the Company and ADS Mexicana related to the transactions in question. Upon concluding the investigation, it was determined by management, upon consultation with the Audit Committee’s advisors, that the various lease and services arrangements described above, as well as certain additional services arrangements with related parties identified during the course of the investigation, lacked commercial and economic substance or proper supporting documentation as to the services performed, and therefore were not appropriately reflected in the Company’s consolidated financial statements and that certain of those transactions should be either re-characterized by ADS Mexicana as dividends as opposed to expenses, or eliminated. These errors have been corrected in the restated consolidated financial statements, with these adjustments primarily impacting Other miscellaneous expense (income), net, Net income attributable to noncontrolling interest and Noncontrolling interest in subsidiaries. Management also identified potential accounting errors related to ADS Mexicana’s revenue recognition cut-off practices which were reported by management to the Audit Committee and also investigated by the Audit Committee’s advisors. Specifically, the Company identified instances where ADS Mexicana recognized revenue prior to the date of shipment or transfer of title/ownership, which is not in accordance with GAAP. The investigation also found that the timing for when such errors occurred was irregular and in certain instances attributable to requests from ADS Mexicana customers that were not properly accounted for, resulting in timing differences between invoicing date and shipment date. The Company also identified and corrected certain other errors related to the accounting for ADS Mexicana. These adjustments related to the increase of the allowance for doubtful accounts, errors related to the inventory costing methodology that were similar to the errors in the U.S. described above, and certain other miscellaneous items. The inventory errors related to the incorrect historical calculation of inventory costing based on the FIFO method and overhead costs. Income Taxes and Other Accounting Adjustments The Company recorded adjustments to income taxes to reflect the impact of the restatement adjustments, as well as discrete tax adjustments related to transfer pricing. See Note 21. Income Taxes for discussion of the related impact to our effective tax rate. The Company also identified and corrected certain other errors, all of which are insignificant individually and in the aggregate. The nature of the primary items besides income taxes in this category of adjustments is described as follows: • The adjustments to the accrued liability for customer rebates are the result of the Company’s prior methodology not properly capturing all rebates due at period end. • The adjustments related to the Tuberias Tigre — ADS Limitada joint venture (“South American Joint Venture”) were primarily the result of an impairment of equipment in the fiscal year ended March 31, 2014 that was not identified until the time of a subsequent-year statutory audit. As a result, the Company has corrected its equity method accounting to properly reflect the impairment charge. Impact on Consolidated Statements of Operations The net effect of the restatement described above on the Company’s previously reported consolidated statements of operations for the years ended March 31, 2014 and 2013 is as follows: For the Year Ended March 31, 2014 Adjustments (Amounts in thousands, except As Previously Leases Inventory Long-Lived ADS Income Taxes As Restated Net sales $ 1,069,009 $ — $ — $ — $ (1,129 ) $ (100 ) $ 1,067,780 Cost of goods sold 856,118 (1,223 ) 17,949 (336 ) 830 472 873,810 Gross profit 212,891 1,223 (17,949 ) 336 (1,959 ) (572 ) 193,970 Operating expenses: Selling 75,024 (479 ) (344 ) 415 (943 ) 369 74,042 General and administrative 78,478 (393 ) (16,122 ) 284 (1,820 ) (666 ) 59,761 Gain on disposal of assets or businesses (5,338 ) 1,852 — 623 — — (2,863 ) Intangible amortization 11,412 — — (1,267 ) — — 10,145 Income from operations 53,315 243 (1,483 ) 281 804 (275 ) 52,885 Other expense: Interest expense 16,141 2,666 — — — — 18,807 Other miscellaneous expense (income), net 133 — — (25 ) (1,200 ) (85 ) (1,177 ) Income before income taxes 37,041 (2,423 ) (1,483 ) 306 2,004 (190 ) 35,255 Income tax expense 22,575 — — — — (2,626 ) 19,949 Equity in net loss of unconsolidated affiliates 1,592 — — — — 1,494 3,086 Net income 12,874 (2,423 ) (1,483 ) 306 2,004 942 12,220 Less net income attributable to noncontrolling interest 1,750 — — — 1,527 316 3,593 Net income attributable to ADS 11,124 (2,423 ) (1,483 ) 306 477 626 8,627 Change in fair value of redeemable convertible preferred stock (3,979 ) — — — — — (3,979 ) Dividends to redeemable convertible preferred stockholders (10,139 ) — — — — — (10,139 ) Dividends paid to unvested restricted stockholders (418 ) — — — — — (418 ) Net loss available to common stockholders and participating securities (3,412 ) (2,423 ) (1,483 ) 306 477 626 (5,909 ) Undistributed income allocated to participating securities — — — — — — — Net loss available to common stockholders $ (3,412 ) $ (2,423 ) $ (1,483 ) $ 306 $ 477 $ 626 $ (5,909 ) Weighted average common shares outstanding: Basic 47,277 47,277 Diluted 47,277 47,277 Net loss per share: Basic $ (0.07 ) $ (0.12 ) Diluted $ (0.07 ) $ (0.12 ) Cash dividends declared per share $ 1.68 $ 1.68 For the Year Ended March 31, 2013 Adjustments (Amounts in thousands, except per share data) As Previously Leases Inventory Long-Lived ADS Income Taxes As Restated Net sales $ 1,017,041 $ — $ — $ — $ (1,455 ) $ 1,516 $ 1,017,102 Cost of goods sold 807,730 1,522 18,089 1,292 452 56 829,141 Gross profit 209,311 (1,522 ) (18,089 ) (1,292 ) (1,907 ) 1,460 187,961 Operating expenses: Selling 69,451 (548 ) (23 ) 99 266 2,560 71,805 General and administrative 67,712 (504 ) (14,925 ) 87 (1,728 ) (1,041 ) 49,601 Gain on disposal of assets or businesses (2,210 ) 240 — 1,019 — — (951 ) Intangible amortization 11,295 — — (1,267 ) — — 10,028 Income from operations 63,063 (710 ) (3,141 ) (1,230 ) (445 ) (59 ) 57,478 Other expense: Interest expense 16,095 2,431 — — — — 18,526 Other miscellaneous expense, net 283 — — — (124 ) (56 ) 103 Income before income taxes 46,685 (3,141 ) (3,141 ) (1,230 ) (321 ) (3 ) 38,849 Income tax expense 16,894 — — — — (959 ) 15,935 Equity in net income of unconsolidated affiliates (387 ) — — — — 121 (266 ) Net income 30,178 (3,141 ) (3,141 ) (1,230 ) (321 ) 835 23,180 Less net income attributable to noncontrolling interest 2,019 — — — (123 ) 624 2,520 Net income attributable to ADS 28,159 (3,141 ) (3,141 ) (1,230 ) (198 ) 211 20,660 Change in fair value of redeemable convertible preferred stock (5,869 ) — — — — — (5,869 ) Dividends to redeemable convertible preferred stockholders (736 ) — — — — 1 (735 ) Dividends paid to unvested restricted stockholders (52 ) — — — — — (52 ) Net income available to common stockholders and participating securities 21,502 (3,141 ) (3,141 ) (1,230 ) (198 ) 212 14,004 Undistributed income allocated to participating securities (2,042 ) 383 383 150 24 (25 ) (1,127 ) Net income available to common stockholders $ 19,460 $ (2,758 ) $ (2,758 ) $ (1,080 ) $ (174 ) $ 187 $ 12,877 Weighted average common shares outstanding: Basic 46,698 46,698 Diluted 47,249 47,249 Net income per share: Basic $ 0.42 $ 0.28 Diluted $ 0.41 $ 0.27 Cash dividends declared per share $ 0.10 $ 0.10 Impact on Consolidated Statements of Comprehensive Income The net effect of the restatement described above on the Company’s previously reported consolidated statements of comprehensive income for the years ended March 31, 2014 and 2013 is as follows: For the Year Ended March 31, 2014 Adjustments (Amounts in thousands) As Previously Leases Inventory Long-Lived ADS Income Taxes As Restated Net income $ 12,874 $ (2,423 ) $ (1,483 ) $ 306 $ 2,004 $ 942 $ 12,220 Comprehensive income 6,468 (2,423 ) (1,483 ) 296 1,959 412 5,229 Less other comprehensive loss attributable to noncontrolling interest, net of tax (1,285 ) — — — (1 ) 44 (1,242 ) Less net income attributable to noncontrolling interest 1,750 — — — 1,527 316 3,593 Total comprehensive income attributable to ADS $ 6,003 $ (2,423 ) $ (1,483 ) $ 296 $ 433 $ 52 $ 2,878 For the Year Ended March 31, 2013 Adjustments (Amounts in thousands) As Previously Leases Inventory Long-Lived ADS Income Taxes As Restated Net income $ 30,178 $ (3,141 ) $ (3,141 ) $ (1,230 ) $ (321 ) $ 835 $ 23,180 Comprehensive income 31,895 (3,141 ) (3,141 ) (1,232 ) (323 ) 1,725 25,783 Less other comprehensive income attributable to noncontrolling interest, net of tax 1,198 — — — (6 ) (33 ) 1,159 Less net income attributable to noncontrolling interest 2,019 — — — (123 ) 624 2,520 Total comprehensive income attributable to ADS $ 28,678 $ (3,141 ) $ (3,141 ) $ (1,232 ) $ (194 ) $ 1,134 $ 22,104 Impact on Consolidated Balance Sheet The net effect of the restatement described above on the Company’s previously reported consolidated balance sheet as of March 31, 2014 is as follows: March 31, 2014 Adjustments (Amounts in thousands) As Previously Leases Inventory Long-Lived ADS Income As Restated ASSETS Cash $ 3,931 $ — $ — $ — $ — $ — $ 3,931 Receivables, net 150,713 — — — (3,404 ) 962 148,271 Inventories 260,300 (86 ) (4,270 ) (130 ) 2,475 1,602 259,891 Deferred income taxes and other current assets 13,555 — — 343 — 567 14,465 Property, plant and equipment, net 292,082 62,903 — (4,663 ) — 29 350,351 Goodwill 86,297 — — 1,805 — (85 ) 88,017 Intangible assets, net 66,184 — — (6,991 ) — 1 59,194 Other assets 64,533 (15 ) — (5,759 ) — 6,688 65,447 Total assets $ 937,595 $ 62,802 $ (4,270 ) $ (15,395 ) $ (929 ) $ 9,764 $ 989,567 LIABILITIES, MEZZANINE EQUITY AND STOCKHOLDERS’ DEFICIT Current maturities of debt obligations $ 11,153 $ — $ — $ — $ — $ — $ 11,153 Current maturities of capital lease obligations — 12,364 — — — — 12,364 Accounts payable 108,111 — 704 88 — 2,069 110,972 Other accrued liabilities 37,956 530 — — — 4,599 43,085 Accrued income taxes 7,372 — — — — 608 7,980 Long-term debt obligation 442,895 — — — — — 442,895 Long-term capital lease obligation — 34,366 — — — — 34,366 Deferred tax liabilities 69,169 — — — — (2,836 ) 66,333 Other liabilities 15,324 82 — — — 16,764 32,170 Total liabilities 691,980 47,342 704 88 — 21,204 761,318 Mezzanine equity 642,951 — — — — — 642,951 Common stock 11,957 — — — — — 11,957 Paid-in capital 22,547 — — — — (10,109 ) 12,438 Common stock in treasury, at cost (448,439 ) — — — — — (448,439 ) Accumulated other comprehensive loss (5,977 ) — — (9 ) (541 ) (303 ) (6,830 ) Retained earnings (deficit) — 15,460 (4,974 ) (15,474 ) (108 ) 2,684 (2,412 ) Noncontrolling interest in subsidiaries 22,576 — — — (280 ) (3,712 ) 18,584 Total liabilities, mezzanine equity and stockholders’ deficit $ 937,595 $ 62,802 $ (4,270 ) $ (15,395 ) $ (929 ) $ 9,764 $ 989,567 Cumulative Effect of Prior Period Adjustments The following table presents the impact of the restatement to the Company’s beginning retained earnings and other stockholders’ equity (deficit) balances, cumulatively to reflect adjustments booked to all periods prior to April 1, 2012: (Amounts in thousands) Common Paid in Common Accumulated Retained Total ADS Non-controlling subsidiaries Total Stockholders’ Equity Stockholders’ equity (deficit), March 31, 2012 (as previously reported) $ 11,957 $ 39,661 $ (449,583 ) $ (1,375 ) $ 110,863 $ (288,477 ) $ 20,628 $ (267,849 ) Adjustments from: Lease Accounting, before income tax effect — — — — 21,025 21,025 — 21,025 Inventory, before income tax effect — — — — (349 ) (349 ) — (349 ) Long-Lived Assets, before income tax effect — — — 3 (14,551 ) (14,548 ) — (14,548 ) ADS Mexicana, before income tax effect — — — (500 ) (388 ) (888 ) (387 ) (1,275 ) All other non-income tax adjustments — (1,006 ) — (653 ) 1,061 (598 ) (4,663 ) (5,261 ) Income tax adjustments — — — — (7,428 ) (7,428 ) — (7,428 ) Total adjustments — (1,006 ) — (1,150 ) (630 ) (2,786 ) (5,050 ) (7,836 ) Stockholders’ equity (deficit), March 31, 2012 (As Restated) $ 11,957 $ 38,655 $ (449,583 ) $ (2,525 ) $ 110,233 $ (291,263 ) $ 15,578 $ (275,685 ) Impact on Consolidated Statements of Cash Flows The net effect of the restatement on the Company’s previously reported consolidated statements of cash flows for the years ended March 31, 2014 and 2013 is as follows: For the Year Ended March 31, 2014 (Amounts in thousands) As Previously Adjustments As Cash Flows from Operating Activities Net income $ 12,874 $ (654 ) $ 12,220 Depreciation and amortization 55,898 7,776 63,674 Changes in working capital (36,037 ) (1,383 ) (37,420 ) All other adjustments to reconcile net income to net cash provided by operating activities 29,387 4,549 33,936 Net cash provided by operating activities 62,122 10,288 72,410 Cash Flows from Investing Activities Net cash used in investing activities (41,767 ) 3,055 (38,712 ) Cash Flows from Financing Activities Payments on capital lease obligation — (12,240 ) (12,240 ) All other financing activities (17,712 ) (1,157 ) (18,869 ) Net cash used in financing activities (17,712 ) (13,397 ) (31,109 ) Effect of exchange rate changes on cash (73 ) 54 (19 ) Net change in cash 2,570 — 2,570 Cash at beginning of year 1,361 — 1,361 Cash at end of year $ 3,931 $ — $ 3,931 For the Year Ended March 31, 2013 (Amounts in thousands) As Previously Adjustments As Cash Flows from Operating Activities Net income $ 30,178 $ (6,998 ) $ 23,180 Depreciation and amortization 55,605 7,497 63,102 Changes in working capital (23,212 ) 9,895 (13,317 ) All other adjustments to reconcile net income to net cash provided by operating activities 5,644 (3,256 ) 2,388 Net cash provided by operating activities 68,215 7,138 75,353 Cash Flows from Investing Activities Net cash used in investing activities (47,199 ) 2,403 (44,796 ) Cash Flows from Financing Activities Payments on capital lease obligation — (9,342 ) (9,342 ) All other financing activities (21,737 ) (259 ) (21,996 ) Net used in financing activities (21,737 ) (9,601 ) (31,338 ) Effect of exchange rate changes on cash — 60 60 Net change in cash (721 ) — (721 ) Cash at beginning of year 2,082 — 2,082 Cash at end of year $ 1,361 $ — $ 1,361 Quarterly Financial Information The net effect of the restatement on the Company’s previously reported consolidated financial statements as of and for the for the quarters ended June 30, September 30 and December 31, 2014 and 2013 (unaudited) can be found at Note 25. Quarterly Financial Information (Unaudited) to these financial statements and in the Forms 10-Q/A for the quarters ended June 30, 2014, September 30, 2014, and December 31, 2014 filed with the SEC concurrently with this Annual Report on Form 10-K.

Disposal of Assets or Businesse

Disposal of Assets or Businesses	12 Months Ended
	Mar. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Disposal of Assets or Businesses	3. DISPOSAL OF ASSETS OR BUSINESSES On December 21, 2012, we entered into an agreement (the “Basalite Agreement”) to sell substantially all of the assets used in connection with our plastic edging product line to Basalite Concrete Products, LLC (“Basalite”) in exchange for cash and a note receivable. The Basalite Agreement defined the purchase price to consist of a cash payment of $600, plus other consideration in the form of an executed promissory note for $1,800. Under terms of the note, Basalite will pay ADS $600 cash on each of the first three one-year anniversaries of the closing date. The net book value for the related assets, consisting of inventory and property and equipment, was $190, resulting in a net gain recognized of $2,210. The sale transaction closed on December 28, 2012. On June 28, 2013, we entered into an agreement (the “NDS Agreement”) to sell substantially all of the assets used in connection with our Draintech product line to National Diversified Sales, Inc. (“NDS”) in exchange for cash. The NDS Agreement defined the purchase price to consist of a cash payment of $5,877. The net book value for the related assets, consisting of inventory and property and equipment, was $1,029, resulting in a net gain recognized of $4,848. The sale transaction closed on June 28, 2013. The product line sold consisted of minor niche fittings which were manufactured by a third party producer and resold by the Company primarily in the retail market. In the fourth quarter of fiscal year 2014, we completed the sale of two businesses that individually and in the aggregate were not significant. The aggregate sales price of these two transactions was $3,030, plus other consideration in the form of a note receivable for $1,241. The net book value of these businesses was $3,781, resulting in a net gain recognized of $490. In the fourth quarter of fiscal year 2015, we completed the sale of product-related intellectual property rights that were not significant. The sales price was $750, consisting of a cash payment of $150 plus other consideration in the form of a note receivable for $600. The sale did not involve any tangible assets, and the related intellectual property rights had no net book value, resulting in a net gain recognized of $750. Periodically, we will dispose of equipment, including equipment that we have accounted for as capital leases. The net loss on the disposition of the equipment was $1,112, $2,475 and $1,259 during the fiscal years 2015, 2014 and 2013, respectively.

Acquisitions

Acquisitions	12 Months Ended
	Mar. 31, 2015
Business Combinations [Abstract]
Acquisitions	4. ACQUISITIONS In fiscal year 2013, we completed the acquisition of two businesses that individually and in the aggregate were not significant. The aggregate purchase price of these acquisitions was $5,239, which included a note payable of $400 plus additional contingent consideration with an initial estimated fair value of $1,271. Ideal Pipe The purchase price for business combinations is allocated to the estimated fair values of acquired tangible and intangible assets, assumed liabilities and goodwill, where applicable. We generally recognize customer relationships, trade names and non-competition agreements as identifiable intangible assets. The fair value of these intangible assets is 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. Trade name intangibles are valued utilizing a relief from royalty method. On January 30, 2015, Hancor of Canada, Inc., a wholly-owned subsidiary of the Company, acquired all issued and outstanding shares of Ideal Drain Tile Limited and Wave Plastics Inc., the sole partners of Ideal Pipe (together “Ideal Pipe”). Ideal Pipe designs, manufactures and markets high performance thermoplastic corrugated pipe and related water management products used across a broad range of Canadian end markets and applications, including nonresidential, residential, agriculture, and infrastructure applications. The acquisition further strengthens our position in Canada by increasing our size and scale in the market, as well as enhancing our manufacturing, marketing and distribution capabilities. The purchase price of Ideal Pipe was $43,828, financed through cash acquired and our existing line of credit facility. The results of operations of Ideal Pipe are included in our Consolidated Statements of Operations after January 30, 2015. The revenue and net income of Ideal Pipe since the acquisition date included in our Consolidated Statements of Operations for the fiscal year ended March 31, 2015 were immaterial. The excess of the purchase price over the fair value of the net assets acquired of $10,660 was allocated to goodwill, assigned to the International segment, and consists primarily of the acquired workforce and synergies the two companies anticipate realizing as a combined company. None of the goodwill is deductible for tax purposes. The purchase price allocation is as follows: (Amounts in thousands) Cash $ 7,443 Other current assets 9,036 Property, plant and equipment 27,258 Goodwill and intangible assets 18,890 Current liabilities (12,721 ) Non-current liabilities (6,078 ) Total purchase price $ 43,828 Transaction costs were immaterial. However, the Company did incur a loss on a currency hedge related to the purchase of Ideal Pipe in the amount of $5,636 which was recorded in Other miscellaneous expense (income), net in the Consolidated Statements of Operations. The Company used this currency hedge to fix the purchase price which was denominated in Canadian dollars from the agreement date until the transaction ultimately closed on January 30, 2015. The acquired identifiable intangible assets represent customer relationships of $4,881 (seven-year useful life), trade name of $3,073 (10-year useful life), and non-compete agreements of $276 (three-year useful life). The following table contains unaudited pro forma Consolidated Statements of Operations information assuming the acquisition occurred on April 1, 2013 and includes adjustments for amortization of intangibles, depreciation of fixed assets and interest expense. 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, 2013 or of future results. In addition, 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. Proforma (Amounts in thousands) 2015 2014 Net sales $ 1,217,431 $ 1,102,477 Net income attributable to ADS $ 10,329 $ 9,029 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, of $749 and $951, (reduced) additional depreciation expense, net of related income taxes, of ($7) and $354 and additional interest expense, net of related income taxes, of $513 and $521 for the fiscal years ended March 31, 2015 and 2014, respectively. Subsequent Event Related to the Acquisition of an Additional Interest in BaySaver 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 Technologies, LLC (“BaySaver”), for a combined purchase price of $3,200, subject to certain additional post-closing purchase price payments. Concurrent with the acquisition, we also entered into an amendment to the BaySaver joint venture agreement to change the voting rights for the joint venture from an equal vote for each member to a vote based upon the ownership interest. As a result, the Company increased its ownership interest to 65% of the issued and outstanding membership interests in BaySaver and obtained the majority of the voting rights. BaySaver will be consolidated with our financial statements beginning in the second quarter of fiscal year 2016. See also Note 11. Investment in Unconsolidated Affiliates.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	5. PROPERTY, PLANT AND EQUIPMENT Property, plant and equipment, net as of the fiscal years ended March 31 consisted of the following: (Amounts in thousands) 2015 2014 Land, buildings and improvements $ 177,073 $ 158,588 Machinery and equipment 690,079 640,529 Construction in progress 5,991 11,003 Total cost 873,143 810,120 Less accumulated depreciation (496,076 ) (459,769 ) Property, plant and equipment, net $ 377,067 $ 350,351 The following table sets forth depreciation expense related to Property, plant and equipment in each of the fiscal years ending March 31: (Amounts in thousands) 2015 2014 2013 Depreciation expense $ 50,136 $ 48,230 $ 47,524

Leases

Leases	12 Months Ended
	Mar. 31, 2015
Leases [Abstract]
Leases	6. LEASES Capital Leases The Company leases certain buildings and transportation equipment including its fleet of trucks and trailers, under capital lease agreements. Leased assets accounted for as capital leases and included in Property, plant and equipment consisted of the following: 2015 2014 (Amounts in thousands) Buildings and improvements $ 7,163 $ 7,716 Machinery and equipment 168,437 145,980 Total cost 175,600 153,696 Less accumulated depreciation (102,263 ) (89,599 ) Leased assets in Property, plant and equipment, net $ 73,337 $ 64,097 The following sets forth the interest and depreciation expense related to capital leases recorded in each fiscal year ended March 31: 2015 2014 2013 (Amounts in thousands) Lease interest expense $ 2,249 $ 2,666 $ 2,431 Depreciation of leased assets 13,943 12,644 11,252 The following is a schedule by year of future minimum lease payments under capital leases and the present value of the net minimum lease payments as of March 31, 2015: (Amounts in thousands) 2016 $ 18,373 2017 15,333 2018 12,093 2019 9,190 2020 6,600 Thereafter 7,206 Total minimum lease payments (a) $ 68,795 Less: amount representing interest (b) 7,561 Present value of net minimum lease payments $ 61,234 Lease obligation — Current 15,731 Lease obligation — Long-term 45,503 Total lease obligation $ 61,234 (a) Excludes contingent rentals which may be paid. Contingent rentals amounted to $844 and $335 for the years ended March 31, 2015 and 2014, respectively. (b) Amount necessary to reduce minimum lease payments to present value calculated at the lower of the rate implicit in the lease or the Company’s incremental borrowing rate at lease inception. Certain leases contain residual value guarantees that create a contingent obligation on the part of the Company to compensate the lessor if the leased asset cannot be sold for an amount in excess of a specified minimum value at the conclusion of the lease term. The calculation is based on the original cost of the transportation equipment, less lease payments made, compared to a percentage of the transportation equipment’s fair market value at the time of sale. All leased units covered by this guarantee have been classified as capital leases and a corresponding capital lease obligation was recorded. Therefore, no further contingent obligation is needed. Operating leases We lease certain real estate and office equipment under various cancelable and non-cancelable operating lease agreements that expire at various dates through fiscal year 2037. Future minimum rental commitments under operating leases as of March 31, 2015, are summarized below (amounts in thousands): 2016 2017 2018 2019 2020 Thereafter Future operating lease payments $ 2,793 $ 1,857 $ 1,014 $ 614 $ 355 $ 2,222 Total rent expense was $3,953, $3,836 and $4,968 in the fiscal years ended March 31, 2015, 2014 and 2013, respectively.

Inventories

Inventories	12 Months Ended
	Mar. 31, 2015
Inventory Disclosure [Abstract]
Inventories	7. INVENTORIES Inventories as of the fiscal years ended March 31 consisted of the following: (Amounts in thousands) 2015 2014 Raw materials $ 50,198 $ 51,785 Finished goods 219,644 208,106 Total Inventories $ 269,842 $ 259,891 We had no work-in-process inventories as of March 31, 2015 and 2014. General and administrative costs related to the production process are capitalized in the cost of finished goods inventory. During fiscal years ended March 31, 2015 and 2014, we incurred production-related general and administrative costs of $17,257 and $15,617, respectively, of which $4,400 and $3,819 remained in inventory at March 31, 2015 and 2014, respectively.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	12 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	8. GOODWILL AND INTANGIBLE ASSETS Goodwill The carrying amount of goodwill by reportable segment is as follows: (Amounts in thousands) Domestic International Total Balance at April 1, 2013 $ 87,507 $ 467 $ 87,974 Currency translation — 43 43 Balance at March 31, 2014 $ 87,507 $ 510 $ 88,017 Acquisition — 10,660 10,660 Currency translation — 2 2 Balance at March 31, 2015 $ 87,507 $ 11,172 $ 98,679 Intangible Assets Intangible assets as of the fiscal years ended March 31, 2015 and 2014 consisted of the following: 2015 2014 (Amounts in thousands) Gross Accumulated Net Gross Accumulated Net Definite-lived intangible assets Developed technology $ 40,579 $ (26,405 ) $ 14,174 $ 40,579 $ (22,588 ) $ 17,991 Customer relationships 43,167 (26,113 ) 17,054 38,252 (21,793 ) 16,459 Patents 6,547 (3,550 ) 2,997 6,175 (2,921 ) 3,254 Non-compete and other contractual agreements 1,365 (691 ) 674 1,088 (491 ) 597 Trademarks and tradenames 14,248 (3,051 ) 11,197 11,157 (2,254 ) 8,903 Total definite-lived intangible assets 105,906 (59,810 ) 46,096 97,251 (50,047 ) 47,204 Indefinite-lived intangible assets Trademarks 11,959 — 11,959 11,990 — 11,990 Total Intangible assets $ 117,865 $ (59,810 ) $ 58,055 $ 109,241 $ (50,047 ) $ 59,194 The following table presents the weighted average amortization period for definite-lived intangible assets at March 31, 2015: Weighted Average Period (in years) Developed technology 10.7 Customer relationships 8.3 Patents 8.3 Non-compete and other contractual agreements 5.1 Trademarks and tradenames 13.9 The following table presents the future intangible asset amortization expense based on existing intangible assets at March 31, 2015: Fiscal Year (Amounts in thousands) 2016 2017 2018 2019 2020 Thereafter Total Amortization expense $ 8,249 $ 7,273 $ 6,745 $ 6,585 $ 4,899 $ 12,345 $ 46,096

Fair Value Measurement

Fair Value Measurement	12 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurement	9. FAIR VALUE MEASUREMENT 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 fiscal years 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, liabilities and mezzanine equity carried at fair value as of the fiscal years ended March 31 were as follows: 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 March 31, 2014 (Amounts in thousands) Total Level 1 Level 2 Level 3 Assets: Derivative assets — propylene swaps $ 27 $ — $ 27 $ — Total assets at fair value on a recurring basis $ 27 $ — $ 27 $ — Liabilities & Mezzanine Equity: Derivative liability — interest rate swaps $ 1,001 $ — $ 1,001 $ — Contingent consideration for acquisitions 2,898 — — 2,898 Redeemable common stock 549,119 — — 549,119 Redeemable convertible preferred stock 291,720 — — 291,720 Deferred compensation — unearned ESOP shares (197,888 ) — — (197,888 ) Total liabilities & mezzanine equity at fair value on a recurring basis $ 646,850 $ — $ 1,001 $ 645,849 Amounts recorded in the Consolidated Statements of Operations for Level 3 items amounted to $283 and $8,963 during 2015 and 2014, respectively. Quantitative Information about Level 3 Fair Value Measurements (Amounts in thousands) Liabilities & Mezzanine Equity Fair Value Valuation Unobservable Input Quantifiable Contingent consideration for acquisitions $ 2,444 Discounted cash flow Weighted Average Cost (a) 10 % Liabilities & Mezzanine Equity Fair Value Valuation Unobservable Input Quantifiable Contingent consideration for acquisitions $ 2,898 Discounted cash flow WACC (a) 11 % Redeemable common stock $ 549,119 Guideline company method and Discounted cash flow Implied pricing (b) 10.5x Guideline public (c) n/a WACC (a) 11 % Redeemable convertible preferred stock $ 291,720 Guideline company method and Discounted cash flow Implied pricing (b) 10.5x Guideline public (c) n/a WACC (a) 11 % Deferred compensation — unearned ESOP shares $ (197,888 ) Guideline company method and Discounted cash flow Implied pricing (b) 10.5x Guideline public (c) n/a WACC (a) 11 % (a) Represents discount rates or rates of return estimates and assumptions that we believe would be used by market participants when valuing these liabilities and mezzanine equity. (b) Represents financial metrics used to estimate the value of comparable companies including EBIT and EBITDA. (c) Represents a group of public companies deemed similar from a risk and return prospective and reflect economic conditions and business risk for the Company’s industry in general. Changes in the fair value of recurring fair value measurements using significant unobservable inputs (Level 3) for the fiscal years ended March 31, 2015 and 2014 were as follows: (Amounts in thousands) Contingent Redeemable Redeemable Deferred Total Balance at March 31, 2013 $ 2,679 $ 522,276 $ 282,547 $ (196,477 ) $ 611,025 Allocation of ESOP shares to participants — — — 8,211 8,211 Change in fair value 738 26,458 13,601 (9,622 ) 31,175 Payments of contingent consideration liability (519 ) — — — (519 ) Redemption of Redeemable convertible preferred stock — — (4,428 ) — (4,428 ) Transfer to Level 3 — 385 — — 385 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 174 65,921 34,903 (23,849 ) 77,149 Payments of contingent consideration liability (628 ) — — — (628 ) Transfer out of Level 3 — (615,040 ) (326,623 ) 217,346 (724,317 ) Balance at March 31, 2015 $ 2,444 $ — $ — $ — $ 2,444 During fiscal year 2015 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 fiscal year ended March 31, 2015 and 2014. Valuation of our Contingent Consideration for Acquisitions The fair values of the contingent consideration payables 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 method used to price this liability is considered 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 the IPO in fiscal 2015, 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 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 are 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 is an overall rate based upon the individual rates of return for invested capital (equity and interest-bearing debt). The return, known as the WACC, is calculated by weighting the required returns on interest-bearing debt and common stock in proportion to their estimated percentages in an expected capital structure. An increase in the WACC would decrease the fair value of the Redeemable common stock. The categorization of the framework used to price this mezzanine equity is considered 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, became unenforceable upon effectiveness of the IPO on July 25, 2014. As a result, the Redeemable common stock was recorded at fair value through the effective date of the IPO and was subsequently reclassified at that fair value to stockholders’ equity. See Note 1 for more information on the IPO. Non-recurring Fair Value Measurements Valuation of our Redeemable Convertible Preferred Stock Prior to the effective date of the IPO, the Trustee of the Company’s ESOP had the ability to put the shares of our Redeemable convertible preferred stock to the Company. Our Redeemable convertible preferred stock is recorded at its fair value in the mezzanine equity section of our Consolidated Balance Sheets and changes in fair value are recorded in Retained earnings or as a reduction of Paid in capital to the extent there is not sufficient 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 is considered 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 March 31, 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 and Note 19. Mezzanine Equity for additional information on the Redeemable common stock and Redeemable convertible preferred stock.

ADS Mexicana

ADS Mexicana	12 Months Ended
	Mar. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]
ADS Mexicana	10. ADS MEXICANA We participate in joint ventures from time to time for the purpose of expanding upon our growth of manufacturing and selling HDPE corrugated pipe in emerging markets. We invested in ADS Mexicana for the purpose of expanding upon our growth of manufacturing and selling ADS licensed HDPE corrugated pipe and related products in the Mexican and Central American markets via the joint venture partner’s local presence and expertise throughout the region. In April 2013, ADS Worldwide acquired an additional 1% equity interest in its consolidated subsidiary ADS Mexicana stock for $520, increasing the Company’s ownership percentage to 51% from 50%. We have executed a Technology, Patents and Trademarks Sub-License Agreement and a Distribution Agreement with ADS Mexicana that provides ADS Mexicana with the rights to manufacture and sell ADS licensed products in Mexico and Central America. We have concluded that we hold a variable interest in and are the primary beneficiary of ADS Mexicana based on our power to direct the most significant activities of ADS Mexicana and our obligation to absorb losses and our right to receive benefits that could be significant to ADS Mexicana. As the primary beneficiary, we are required to consolidate the assets and liabilities of ADS Mexicana. The equity owned by our joint venture partner is shown as Noncontrolling interest in subsidiaries in our Consolidated Balance Sheets and our joint venture partner’s portion of net income is shown as Net income attributable to noncontrolling interest in our Consolidated Statements of Operations. The table below includes the assets and liabilities of ADS Mexicana that are consolidated as of March 31, 2015 and 2014. The balances exclude intercompany transactions that are eliminated upon consolidation. (Amounts in thousands) 2015 2014 Assets Current assets $ 24,822 $ 32,877 Property, plant and equipment, net 18,556 21,633 Other noncurrent assets 2,523 3,378 Total assets $ 45,901 $ 57,888 Liabilities Current liabilities $ 11,134 $ 11,595 Noncurrent liabilities 5,259 7,020 Total liabilities $ 16,393 $ 18,615

Investment in Unconsolidated Af

Investment in Unconsolidated Affiliates	12 Months Ended
	Mar. 31, 2015
Investments in and Advances to Affiliates, Schedule of Investments [Abstract]
Investment in Unconsolidated Affiliates	11. INVESTMENT IN UNCONSOLIDATED AFFILIATES We participate in three unconsolidated joint ventures, South American Joint Venture, which is 50% owned by our wholly-owned subsidiary ADS Chile; BaySaver, which is 55% owned by our wholly-owned subsidiary ADS Ventures, Inc.; and Tigre-ADS USA, Inc. (“Tigre-ADS USA”), which is 49% owned by our wholly-owned subsidiary ADS Ventures, Inc. In each case, the Company has concluded that it is appropriate to account for these investments using the equity method, whereby our share of the income or loss of the joint venture is reported in the Consolidated Statements of Operations under Equity in net loss (income) of unconsolidated affiliates and our investment in the joint venture is included in Other assets in the Consolidated Balance Sheets. South American Joint Venture Our investment in this unconsolidated joint venture was formed for the purpose of expanding upon our growth of manufacturing and selling HDPE corrugated pipe in the South American market via the joint venture partner’s local presence and expertise throughout the region. We are not required to consolidate the South American Joint Venture as we are not the primary beneficiary, although we do hold a significant variable interest in the South American Joint Venture through our equity investment and debt guarantee. Summarized financial data, which includes capital contributions of $4,000 and $2,875 during 2015 and 2014, respectively, as of the fiscal years ended March 31 for the South American Joint Venture is as follows: (Amounts in thousands) 2015 2014 Investment in the South American Joint Venture $ 17,081 $ 18,422 Receivable from the South American Joint Venture 5,607 8,313 BaySaver On July 15, 2013, ADS Ventures, Inc., a wholly-owned subsidiary of the Company, BaySaver Technologies, Inc. (“BTI”) and Mid Atlantic Storm Water Research Center, Inc. (“MASWRC”) entered into an LLC agreement to form a new joint venture, BaySaver. The joint venture was established to design, engineer, manufacture, market and sell water quality filters and separators used in the removal of sediment and pollution from storm water anywhere in the world except New Zealand, Australia and South Africa. The Company contributed $3,500 in cash, $1,285 in inventory, and other intangible assets with no carrying value, in exchange for a 55% equity interest and a 50% voting interest in BaySaver. We are not required to consolidate BaySaver under ASC 810-10 as we are not the primary beneficiary, although we do hold a significant variable interest in BaySaver through our equity investment. In connection with this investment, the Company acquired a call option to purchase the remaining 45% interest in BaySaver. Also, in connection with the investment, the Company granted a put option enabling the other equity holder to sell his remaining shares in BaySaver to the Company upon the passage of time or the occurrence of certain events. Summarized financial data as of the fiscal years ended March 31 for the BaySaver joint venture is as follows: (Amounts in thousands) 2015 2014 Investment in BaySaver $ 4,906 $ 5,202 Receivable from BaySaver 59 6 Our share of the income of this joint venture is decreased by amortization expense relating to the basis difference between our cost basis in the investment and the basis reflected at the joint venture level. This basis difference is being recorded over the lives of the underlying assets which gave rise to the basis difference, which is 10 years. The unamortized basis difference as of March 31, 2015 is $1,639. As noted in Note 4, in July 2015, we acquired an additional 10% interest in BaySaver and entered into Amendment No. 1 to BaySaver Technologies, LLC Limited Liability Company Agreement dated as of July 17, 2015 by and among ADS Ventures, Inc., BaySaver Technologies, Inc. and Mid-Atlantic Storm Water Research Center, Inc. (“BaySaver amendment”) which revised the voting rights for BaySaver. As a result, we now have more than 50% of the voting rights, in addition to owning 65% of the equity in BaySaver, and will be required to consolidate the assets and liabilities of BaySaver subsequent to the date of our additional investment and BaySaver amendment in July 2015. Tigre-ADS USA On April 7, 2014, ADS Ventures, Inc., a wholly-owned subsidiary of the Company, and Tigre S.A. — Tubos e Conexoes entered into a stock purchase agreement to form a joint venture, Tigre-ADS USA. The joint venture was established to manufacture and sell PVC fittings for waterworks, plumbing, and HVAC applications primarily in the United States and Canadian markets. The Company acquired 49% of the outstanding shares of capital stock of Tigre-ADS USA for $3,566. The joint venture represents a continuation of the existing activities of Tigre-ADS USA through its Janesville, Wisconsin manufacturing facility. We are not required to consolidate Tigre-ADS USA under ASC 810-10 as we are not the primary beneficiary, although we do hold a significant variable interest in Tigre-ADS USA through our equity investment. Summarized financial data as of the fiscal year ended March 31 for the Tigre-ADS USA joint venture is as follows: (Amounts in thousands) 2015 Investment in Tigre-ADS USA $ 3,051 Receivable from Tigre-ADS USA 27

Related Party Transactions

Related Party Transactions	12 Months Ended
	Mar. 31, 2015
Related Party Transactions [Abstract]
Related Party Transactions	12. 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 its interest in ADS Mexicana for financial reporting purposes. During the year ended March 31, 2015 and 2014, ADS Mexicana compensated certain owners and former owners of Grupo Altima, the JV partner of ADS Mexicana, for consulting services related to the operations of the business and a noncompete arrangement, respectively. These cash payments totaled $459, $817, and $0 for the fiscal years ended March 31, 2015, 2014 and 2013, respectively. Occasionally, ADS and ADS Mexicana jointly enter into agreements for pipe sales with their related parties which totaled $3,783, $6,687, $3,370 in the years ended March 31, 2015, 2014 and 2013, respectively. Outstanding receivables related to these sales were $1,005 and $2,480 at March 31, 2015 and 2014, respectively. In February 2015, ADS Mexicana loaned $5,000 to an entity owned by a Grupo Altima owner and such loan was repaid the same month. The applicable interest rate for the loan was 2.35%. We are the guarantor of 100% of ADS Mexicana’s credit facility and our maximum potential payment under this guarantee totals $12,000. See Note 13. Debt. South American Joint Venture Our 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 $11,000 as of March 31, 2015. The maximum borrowing permitted under the South American Joint Venture’s credit facility is $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 March 31, 2015 and 2014, the outstanding principal balance of the credit facility including letters of credit was $13.6 million and $11.1 million, respectively. The weighted average interest rate as of March 31, 2015 was 3.33% on U.S. dollar denominated loans and 7.54% 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 the South American Joint Venture jointly enter into agreements for pipe sales with their related parties in immaterial amounts. BaySaver At March 31, 2015, ADS holds an equity method investment in BaySaver of approximately 55%. BaySaver may at times provide short-term financing to ADS to enhance liquidity. As of March 31, 2015 and 2014, BaySaver held unsecured, interest-free, notes receivable from ADS in the amounts of $500 and $400, which were fully paid subsequent to year end. During 2015, ADS received dividends of $1,100 from 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	12 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Debt	13. DEBT Long-term debt as of the fiscal years ended March 31 consisted of the following: (Amounts in thousands) 2015 2014 Bank Term Loans Revolving Credit Facility — ADS $ 205,100 $ 248,100 Revolving Credit Facility — ADS Mexicana — — Term Note 91,250 97,500 Senior Notes payable 100,000 100,000 Mortgage notes payable — 3,733 Industrial revenue bonds 3,545 4,715 Total 399,895 454,048 Current maturities (9,580 ) (11,153 ) Long-term debt obligation $ 390,315 $ 442,895 Bank Term Loans The Bank Term Loans include 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 (“the Revolving Credit Facilities”) and a $100,000 term note (“Term Note”). The Revolving Credit Facilities expire and the Term Note is due in June 2018. The Revolving Credit Facilities and the Term Note have a variable interest rate that depends upon the Company’s “pricing ratio” as defined in the agreements for the Revolving Credit Facilities. The interest rate is derived from the London Inter-Bank Offered Rate (“LIBOR”) or alternate base rate (“Prime Rate”) at the Company’s option. The average rates were 2.64%, 2.30% and 3.01% at March 31, 2015, 2014 and 2013, respectively. Letters of credit outstanding at March 31, 2015 amounted to $8,005 and reduce the availability of the Revolving Credit Facilities. The amount available for borrowing for ADS, Inc. and ADS Mexicana was $111,895 and $12,000, respectively at March 31, 2015. Per the terms of the agreements for the Revolving Credit Facilities, ADS is not required to hedge its interest exposure using interest rate swaps; however, it is currently the objective of ADS to manage its exposure to variable rate debt. On July 18, 2013, ADS executed two Forward Interest Rate Swaps on the 30-Day LIBOR interest rate. One swap was for $50,000 and has a fixed rate of 0.86% for a period of three years beginning on September 3, 2013 and expiring on September 1, 2016. The second swap executed on July 18, 2013 was for $50,000 and has a fixed rate of 1.08% for a period of two years beginning on September 2, 2014 and expiring on September 1, 2016. Senior Notes Payable In December 2009, we signed an agreement with Prudential Investment Management, Inc. for the issuance of senior promissory notes (“Senior Notes”), for an aggregate amount of up to $100,000. During fiscal 2010, we issued $75,000 of Senior Notes with interest fixed at 5.6% and payable quarterly. The rate is subject to an additional 200 basis point excess leverage fee if our calculated leverage ratio exceeds 3 to 1 at the end of a fiscal quarter. A principal payment of $25,000 is due in each of fiscal years 2017, 2018, and 2019. In July 2013, ADS issued an additional $25,000 of Senior Notes. Interest for the additional $25,000 is payable quarterly and is fixed at 4.05%. The rate is subject to an additional 200 basis point excess leverage fee if calculated leverage ratio exceeds 3 to 1 at the end of a fiscal quarter. A principal payment of $25,000 is due in September of fiscal year 2020. At March 31, 2015, our calculated leverage ratio exceeded 3 to 1, and we have accrued the excess leverage fee of $500. Mortgage Notes Payable Two mortgage notes outstanding at March 31, 2014 were fully paid during 2015 through scheduled monthly installments. As of March 31, 2014, one note had a variable interest rate of 2.903% (New Miami, Ohio), and the other note had a fixed rate of 5.1% (Hilliard, Ohio). Land and buildings with a net book value of approximately $8,637 at March 31, 2014, collateralized the two mortgage notes. Industrial Revenue Bonds Between 1996 and 2007, ADS issued industrial revenue bonds for the construction of four production facilities. Two of the bonds were retired during fiscal 2011 and one of the bonds was retired in fiscal 2015. The remaining bond has a variable interest rate based on the Securities Industry and Financial Markets Association (SIFMA) municipal swap index rate which is computed weekly. The rate on this bond at March 31, 2015, was 3.32%, including a letter of credit fee of 3.25%. Land and buildings with a net book value of approximately $9,997 at March 31, 2015, collateralize the bonds. These bonds are not considered auction rate securities. ADS Mexicana Short Term Credit Facility On December 11, 2014, ADS Mexicana entered into a short-term credit facility arrangement with Scotiabank Inverlat, S.A. (“Scotiabank”). The facility matures in 12 months and has a borrowing capacity of $5 million or an equivalent amount in Mexican pesos, not to exceed 72.5 million pesos. The interest rate for the dollar borrowings is variable and is derived from the LIBOR. The interest rate for peso borrowings is also variable and is derived from the Interbank Equilibrium Interest Rate (“T.I.I.E.”). There were no outstanding borrowings on this facility at March 31, 2015. Debt Covenants and Dividend Restrictions The Bank Term Loans and the Senior Notes require, among other provisions, that we (1) maintain a 1.25 to 1 minimum fixed charge coverage ratio; (2) maintain a maximum leverage ratio of 4 to 1; and (3) establish certain limits on permitted transactions, principally related to indebtedness, capital distributions, loans and investments, and acquisitions and dispositions of assets. Capital distributions, including dividends, are prohibited if we are not in compliance with our debt covenants. In any fiscal year, if we are in compliance with all debt covenants and the pro-forma leverage ratio exceeds 3 to 1, capital distributions are permitted up to a limit of $50,000. Principal Maturities Maturities of long-term debt (excluding interest) as of March 31, 2015 are summarized below: Fiscal Years Ending March 31, (Amounts in thousands) 2016 2017 2018 2019 2020 Thereafter Total Principal maturities $ 9,580 $ 35,870 $ 35,905 $ 293,540 $ 25,000 $ — $ 399,895 Subsequent Events Related to the Bank Term Loans and Senior Notes In July 2015, the Company obtained consents from the requisite holders of its Bank Term Loans and its Senior Notes to waive certain actual and potential covenant violations. Specifically, the covenant violations were the result of the fact that the Company had not delivered its fiscal 2015 audited financial statements within 90 days of March 31, 2015, and did not expect to be able to file its first quarter fiscal 2016 quarterly financial statements within 45 days of June 30, 2015. The consents extended the time for delivery of the fiscal 2015 audited financial statements and the first quarter fiscal 2016 quarterly financial statements to September 30, 2015, whereby an event of default was waived as long as those financial statements were delivered within the thirty day grace period after September 30, 2015. In August 2015, the Company entered into amended agreements related to the Bank Term Loans and Senior Notes in connection with the Company’s determination that a substantial portion of its transportation and equipment leases should be treated as capital leases rather than as operating leases, as discussed in Note 2. Restatement of Previously Issued Financial Statements. The material terms of each amended agreement modify certain definitions applicable to the Company’s affirmative and negative financial covenants, including the minimum fixed charge coverage ratio, the maximum leverage ratio, and the limits on indebtedness, to accommodate the Company’s treatment of its transportation and equipment leases as capital leases rather than operating leases, along with corresponding changes to the provisions outlining the application of GAAP in the definition of accounting terms used in various financial covenants. The amendments also waive any potential event of default that may exist under any of the respective agreements as a result of changes to the Company’s financial statements related to lease accounting, and do not require the Company to deliver restated financial statements or compliance certificates for any annual or quarterly period prior to the fiscal year ended March 31, 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.

Derivative Transactions

Derivative Transactions	12 Months Ended
	Mar. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Transactions	14. DERIVATIVE TRANSACTIONS The Company uses interest rate swaps, commodity options in the form of collars and swaps, and foreign currency forward contracts to manage its various exposures to interest rate, commodity price, and foreign currency exchange rate fluctuations. For interest rate swaps, gains and losses resulting from the difference between the spot rate and applicable base rate is recorded in interest expense. For collars, commodity swaps and foreign exchange forward contracts, contract settlement gains and losses are recorded in the Consolidated Statements of Operations in Other miscellaneous expense (income), net. Gains and losses related to mark-to-market adjustments for changes in fair value of the derivative contracts are also recorded in the Consolidated Statements of Operations as Other miscellaneous expense (income), net. A summary of the fair values for the various derivatives at March 31, 2015 and 2014 is presented below: 2015 2014 Asset Liability Asset Liability Interest rate swaps $ — $ (765 ) $ — $ (1,001 ) Foreign exchange forward contracts 28 — — — Diesel fuel option collars — (2,841 ) — — Propylene swaps — (5,142 ) 27 — The Company recorded losses and (gains) on mark-to-market adjustments for changes in the fair value of derivative contracts as well as losses and (gains) on the settlement of derivative contracts as follows: Unrealized Mark to Market Losses (Gains) (Amounts in thousands) 2015 2014 2013 Interest rate swaps $ (236 ) $ (81 ) $ (221 ) Foreign exchange forward contracts (28 ) — — Diesel fuel option collars 2,841 55 217 Propylene swaps 5,169 (27 ) — $ 7,746 $ (53 ) $ (4 ) Realized Losses (Gains) (Amounts in thousands) 2015 2014 2013 Foreign exchange forward contracts $ 5,636 $ — $ — Diesel fuel option collars 736 — (57 ) Propylene swaps 1,333 (84 ) — $ 7,705 $ (84 ) $ (57 ) Total realized and unrealized losses (gains) included in Other miscellaneous expense (income), net (1) $ 15,451 $ (137 ) $ (61 ) (1) The total balance in Other miscellaneous expense (income), net in the Consolidated Statements of Operations also includes other (income) expense items of ($1,081), ($1,040) and $164 at March 31, 2015, 2014 and 2013, respectively.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	15. COMMITMENTS AND CONTINGENCIES Purchase Commitments We secure supplies of resin raw material by agreeing to purchase quantities during a future given period at a fixed price. These purchase contracts range from 1 to 12 months and occur in the ordinary course of business. Under such purchase contracts in place at March 31, 2015, we have agreed to purchase 18,000 pounds of resin over the period April 2015 through December 2015 at a committed purchase cost of $11,790. 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. The complaint alleges that the Company made material misrepresentations and/or omissions of material fact in its public disclosures during the period from September 5, 2014 through July 14, 2015, in violation of Section 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. 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’s Division of Enforcement informed the Company that it was conducting an informal inquiry with respect to the Company. As part of this inquiry, the SEC requested the voluntary production of certain documents generally related to the Company’s accounting practices. Subsequently, the Company received a subpoena from the SEC on December 3, 2015 pursuant to a formal order of investigation, which subpoena repeated in substantial part a previous voluntary document production request. The Company has cooperated with the SEC in connection with this investigation and the production of documents, which remains ongoing, and will continue to fully cooperate with the SEC with respect to its investigation. 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 the 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 will materially affect our consolidated operations, cash flows, or financial position, and we have recorded adequate accrued liabilities to cover our estimated probable loss exposure.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Mar. 31, 2015
Postemployment Benefits [Abstract]
Employee Benefit Plans	16. EMPLOYEE BENEFIT PLANS Employee Stock Ownership Plan (ESOP) We established the Advanced Drainage Systems, Inc. ESOP (the “ESOP” or the “Plan”) effective April 1, 1993. The Plan was funded through a transfer of assets from our tax-qualified profit-sharing retirement plan, as well as a 30-year term loan from ADS. The Plan operates as a tax-qualified leveraged ESOP and was designed to enable eligible employees to acquire stock ownership interest in ADS. Employees of ADS who have reached the age of 18 are generally eligible to participate in the Plan on March 31 after six months of service. Upon retirement, disability, death, or vested terminations, (i) a participant or designated beneficiary may elect to receive the amount in their account attributable to the 1993 transfer of assets from our tax-qualified profit sharing retirement plan in the form of cash or ADS stock with any fractional shares paid in cash; (ii) stock credited to the participants’ ESOP stock account resulting from the ESOP’s loan repayments are distributed in the form of ADS stock, and (iii) amounts credited to the participants’ ESOP cash account are distributed in the form of cash. Upon attainment of age 50 and seven years of participation in the Plan, a participant may elect to diversify specified percentages of the number of shares of ADS stock credited to the participant’s ESOP stock account in compliance with applicable law. We are obligated to make contributions to the Plan, which, when aggregated with the Plan’s dividends, equal the amount necessary to enable the Plan to make its regularly scheduled payments of principal and interest due on its term loan to ADS. As the Plan makes annual payments of principal and interest, an appropriate percentage of preferred stock is allocated to ESOP participants’ accounts in accordance with plan terms that are compliant with applicable Internal Revenue Code and regulatory provisions. Required dividends on allocated shares are generally passed through and paid in cash to the participants and required dividends on unallocated shares are paid in cash to the Plan and generally used to service the Plan’s debt. On January 6, 2014, the Board of Directors declared a cash dividend of $1.59 (the “Special Dividend”) per share for a total amount of approximately $108,101, on all outstanding shares of our common stock and Redeemable convertible preferred stock. We paid the Special Dividend on January 15, 2014 to all stockholders of record on January 2, 2014. The payment of the Special Dividend was financed through the Company’s Revolving Credit Facilities. For additional details on the Revolving Credit Facilities, please refer to Note 13. Debt. The Special Dividend on the ESOP’s allocated shares was paid in cash (i.e., passed through) to participants, and the Special Dividend on the ESOP’s unallocated shares was retained by the ESOP and allocated among the participants’ ESOP cash accounts. The allocation of cash among the participants’ ESOP cash accounts related to dividends paid on unallocated shares resulted in additional compensation expense for the fiscal year ended March 31, 2014 of $22,624, of which $13,896 was included in Cost of goods sold, $4,550 was included in Selling expenses, and $4,178 was included in General and administrative expenses in the Consolidated Statements of Operations. In the fiscal years ended March 31, 2015 and 2014, the ESOP committee directed the Plan trustee to retain $824 and $23,614, respectively, in dividends on unallocated ADS shares rather than to service the Plan’s debt. These dividends were allocated to participants based on the total shares in their account in relation to total shares allocated at March 31, 2015 and 2014. In the fiscal years ended March 31, 2015 and 2014, 737 and 734 shares of Redeemable convertible preferred stock, respectively, were allocated to the ESOP participants, including, in addition to the cash dividends, 6 and 11 preferred shares allocated as dividends, respectively. See Note 19. Mezzanine Equity for further details on the shares of Redeemable convertible preferred stock held by our ESOP. Profit-Sharing Plan We have a tax-qualified profit-sharing retirement plan with a 401(k) feature covering substantially all eligible employees. We did not make employer contributions in the fiscal years ended March 31, 2015, 2014 and 2013 to the tax-qualified profit-sharing retirement plan.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	12 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Accumulated Other Comprehensive Loss	17. ACCUMULATED OTHER COMPREHENSIVE LOSS The following table presents the changes in the balances of each component of Accumulated other comprehensive loss (“AOCL”) for the fiscal years ended March 31: (Amounts in thousands) Currency Translation Other Accumulated Other Comprehensive Loss Balance at April 1, 2012 $ (2,554 ) $ 29 $ (2,525 ) Other comprehensive income (loss) 1,469 (41 ) 1,428 Income tax expense — 16 16 Balance at March 31, 2013 $ (1,085 ) $ 4 $ (1,081 ) Other comprehensive (loss) income (5,753 ) 6 (5,747 ) Income tax benefit — (2 ) (2 ) Balance at March 31, 2014 $ (6,838 ) $ 8 $ (6,830 ) Other comprehensive loss (8,691 ) — (8,691 ) Balance at March 31, 2015 $ (15,529 ) $ 8 $ (15,521 )

Stockholders' Equity (Deficit)

Stockholders' Equity (Deficit)	12 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Stockholders' Equity (Deficit)	18. STOCKHOLDERS’ EQUITY (DEFICIT) The common stockholders have entered into an agreement that grants ADS the right of first refusal to purchase shares in the event of death, disability, or termination of certain management stockholders. In addition to the Special Dividend, the Board of Directors approved a dividend of $0.04 per share to all common stockholders of record in each of the quarters ending March 31, 2015 and December 31, 2014. No dividends were declared in the quarters ended June 30, 2014 and September 30, 2014. The Board of Directors approved quarterly cash dividends of $0.029 per share during each of the first three quarters of the fiscal year ended March 31, 2014. The Board of Directors approved a quarterly cash dividend of $0.026 per share to all common stockholders of record during the fiscal year ended March 31, 2013. Total cash dividends paid on common stock during the fiscal years ended March 31, 2015, 2014 and 2013 were $4,270, $80,102 and $4,817, respectively. During the fiscal year ended March 31, 2015, we purchased a negligible amount of fractional shares subsequent to the IPO at a price of $17.21 per share. In fiscal year ended March 31, 2014, we purchased 80 shares from certain stockholders at a purchase price of $13.64 per share. See Note 13. Debt for a description of restrictions on the payment of dividends imposed under our Bank Term Loans and Senior Notes agreements. Subsequent Events Related to Stockholders’ Equity (Deficit) During each of the first three quarters of fiscal 2016, the Company declared a cash dividend of $0.05 per share of common stock.

Mezzanine Equity

Mezzanine Equity	12 Months Ended
	Mar. 31, 2015
Noncontrolling Interest [Abstract]
Mezzanine Equity	19. MEZZANINE EQUITY Redeemable Common Stock Prior to the July 2014 IPO , one of our minority equity owners along with other shareholders who hold ownership in ADS of at least 15% (referred to as “Major Shareholders”) entered into an agreement which provided the Major Shareholders the right to put their common stock to the Company at fair value if, following the fifth anniversary of the recapitalization that occurred during 2010, a Major Shareholder demands that the Company effect an IPO covering the registration of at least $50,000 of securities, and either the Company advises the Major Shareholder that ADS will not begin preparations for an IPO within 180 days after delivery, or after such preparations have begun they are discontinued (the “Major Shareholders’ Put Right”). As the Major Shareholders’ Put Right was a redemption right which prior to the IPO was outside the control of ADS, we classified common stock held by the Major Shareholders in the mezzanine equity section of our Consolidated Balance Sheets at its fair value, and changes in fair value were recorded in Retained earnings. As of March 31, 2014, there were 38,320 shares of common stock held by Major Shareholders. 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, became unenforceable upon effectiveness of the IPO on July 25, 2014. As a result, the Redeemable common stock was recorded 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. As of March 31, 2015, there were 10,101 shares of common stock held by Major Shareholders, which are now classified in stockholders’ equity as a result of the IPO. Redeemable Convertible Preferred Stock The Trustee of the Company’s ESOP has the ability to put shares of our Redeemable convertible preferred stock to the Company. The Redeemable convertible preferred stock has a required cumulative 2.5% dividend (based on the issue price of $0.781 per share) and is convertible at a rate of 0.7692 shares of common stock for each share of Redeemable convertible preferred stock. We guarantee the value of the Redeemable convertible preferred stock at $0.781 per share. The put option requirements of the Internal Revenue Code apply in the event that the Company’s common stock is not a registration type class of security or its trading has been restricted. Therefore, the holders of Redeemable convertible preferred stock have a put right to require us to repurchase such shares in the event that our common stock is not listed for trading or otherwise quoted on the NYSE, AMEX, NASDAQ, or any other market more senior than the OTC Bulletin Board. Given that the event that may trigger redemption of the Redeemable convertible preferred stock (the listing or quotation on a market more senior than the OTC Bulletin Board) is not solely within our control, our Redeemable convertible preferred stock is presented in the mezzanine equity section of our Consolidated Balance Sheets. As of March 31, 2015, we did not adjust the carrying value of the Redeemable convertible preferred stock to its redemption value or recognize any changes in fair value as we did not consider it probable that the Redeemable convertible preferred stock would become redeemable. The Board of Directors approved the 2.5% annual dividend to be paid March 31 of each fiscal year to the stockholders of record as of March 15, 2015, 2014 and 2013. The annual dividend was paid in cash and stock on the allocated shares. During the first quarter of 2016, the Board of Directors approved the 2.5% annual dividend to be paid on March 31, 2016 to stockholders of record as of March 15, 2016. In addition, the Board of Directors approved a quarterly discretionary cash dividend of $0.0196 per share to all preferred stockholders of record during the fiscal year ended March 31, 2013 and quarterly discretionary cash dividends of $0.0221 per share during the first three quarters of the fiscal year ended March 31, 2014. As noted above, the Redeemable convertible preferred stockholders also received the Special Dividend during the fourth quarter of fiscal 2014. The Special Dividend and the discretionary dividends on unallocated shares of Redeemable convertible preferred stock were allocated to participants rather than being used to service the Plan’s debt as described in Note 16. Employee Benefit Plans. Cash and stock dividends on allocated Redeemable convertible preferred stock for the fiscal years ended March 31, 2015 and 2014, respectively, are summarized in the following table. For additional information on dividends paid to the unallocated Redeemable convertible preferred stock, please refer to Note 16. Employee Benefit Plans. (Amounts in thousands) 2015 2014 Quarterly cash dividends $ 507 $ 526 Annual cash dividends 27 32 Special Dividend — 9,463 Total cash dividends $ 534 $ 10,021 Annual stock dividend 127 118 Annual cash dividend 27 32 Total ESOP required dividends $ 154 $ 150 Allocated shares 7,914 7,668 Required dividend per share 0.0195 0.0195 Required dividends $ 154 $ 150

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	20. STOCK-BASED COMPENSATION Deferred Compensation — Unearned ESOP Shares The fair value of Redeemable convertible preferred stock held by the ESOP trust, but not yet earned by the ESOP participants or used for dividends, is reported as Deferred compensation — unearned ESOP shares within the mezzanine equity section of our Consolidated Balance Sheets. Compensation expense and related dividends paid with ESOP shares are recognized based upon the average annual fair value of the shares allocated. The shares allocated are for services rendered throughout the period and, therefore, a simple average is used to calculate average annual fair value. Deferred compensation — unearned ESOP shares is relieved at fair value, with any difference between the annual average fair value and the fair value of shares when allocated being added to Additional paid in capital. The fair value of the shares allocated was $22.05, $11.16 and $10.64 per share of Redeemable convertible preferred stock at March 31, 2015, 2014 and 2013, respectively, resulting in an average annual fair value per share of $16.61, $10.90 and $10.25 for the fiscal years ended March 31, 2015, 2014 and 2013, respectively. During the fiscal years ended March 31, 2015, 2014 and 2013, we recognized compensation expense of $12,144, $7,891 and $7,283, respectively, related to allocation of ESOP shares to participants. Stock Options Our 2000 stock option plan (“2000 Plan”) provides for the issuance of non-statutory stock options to management based upon the discretion of the Board of Directors. The plan generally provides for grants with the exercise price equal to fair value on the date of grant, which vest in three equal annual amounts beginning in year five and expire after 10 years from issuance. In August 2013, a new stock option plan (“2013 Plan”) was approved by the Board of Directors and provides for the issuance of up to 3,323 non-statutory common stock options to management subject to the Board’s discretion. The plan generally provides for grants with the exercise price equal to fair value on the date of grant. The grants generally vest in five equal annual amounts beginning in year one and expire after 10 years from issuance. Options issued to the Chief Executive Officer vest equally over four years and expire after 10 years from issuance. For both stock option plans, management determines the fair value of the options based on the Black-Scholes option pricing model. This methodology requires significant inputs including the fair value of our common stock, risk-free interest rate, dividend yield and expiration date. During the fiscal years ended March 31, 2015, 2014 and 2013, we recognized total stock-based compensation expense under both plans of $4,418, $2,669 and $545, respectively, which was included in General and administrative expense in our Consolidated Statements of Operations. As of March 31, 2015 and 2014, there was a total of $3,269 and $6,884, respectively, of unrecognized compensation expense related to unvested stock option awards that will be recognized as an expense as the awards vest over the remaining service period. Of this amount, $0 and $2,383 relate to liability classified awards and $3,269 and $4,501 relate to equity classified awards as of March 31, 2015 and 2014, respectively. We estimate the fair value of stock options granted after April 1, 2006 using a Black-Scholes option-pricing model, with assumptions as follows: 2015 2014 2013 Expected stock price volatility 40 % 44 % 48 % Risk-free interest rate 2.1 % 2.3 % 1.2 % Weighted-average expected option life (years) 8 8 8 Dividend yield 0.86 % 0.84 % 0.81 % In May 2014, the Board of Directors approved the increase of shares available for granting under the 2013 plan to 1,412 shares. We had approximately 1,106 and 1,412 shares available for granting under the 2000 and 2013 plans, respectively, as of March 31, 2015. 2000 Plan The stock option activity for the fiscal years ended March 31 is summarized as follows: 2015 2014 2013 Number Shares Weighted Weighted Number Shares Weighted Weighted Number of Shares Weighted Weighted Outstanding at beginning of year 913 $ 9.48 4.1 1,333 $ 8.10 4.0 1,524 $ 7.03 3.9 Issued 78 15.74 — 25 13.64 — 134 12.59 — Exercised (235 ) 7.50 — (427 ) 5.19 — (325 ) 4.89 — Forfeited (10 ) 10.48 — (18 ) 10.77 — — — — Outstanding at end of year 746 10.75 4.1 913 9.48 4.1 1,333 8.10 4.0 Vested at end of year 668 10.16 3.5 485 8.01 2.2 654 5.75 2.2 Unvested at end of year 78 15.74 9.4 428 11.14 6.3 679 10.37 5.7 Vested and expected to vest at end of year (a) 640 10.73 7.6 800 9.36 5.2 1,204 7.90 4.6 Fair value of options granted during the year $ 6.76 $ 6.38 $ 6.01 a) Vested and expected to vest at end of year assumes the forfeiture of approximately 15% of options outstanding at the end of each period. The following table summarizes information about the unvested stock option grants as of the fiscal years ended March 31: 2015 2014 Number of Weighted Number of Weighted Unvested at beginning of year 428 $ 5.82 679 $ 5.73 Granted 78 6.76 25 6.38 Vested (428 ) 5.82 (276 ) 5.49 Unvested at end of year 78 $ 6.76 428 $ 5.82 2013 Plan The stock option transactions for the fiscal years ended March 31 are summarized as follows: 2015 2014 Number Shares Weighted Weighted Number Shares Weighted Weighted Outstanding at beginning of period 1,911 $ 13.64 9.42 — $ — — Issued — equity classified — — — 1,440 13.64 — Issued — liability classified — — — 518 13.64 — Forfeited — — — (47 ) 13.64 — Outstanding at end of year 1,911 13.64 8.42 1,911 13.64 9.42 Vested at end of year 408 13.64 8.42 — — — Unvested at end of year 1,503 13.64 8.42 1,911 13.64 9.42 Vested and expected to vest at end of year (a) 1,702 13.64 8.42 1,704 13.64 9.42 Fair value of options granted during the year $ — $ 6.22 (a) Vested and expected to vest at end period assumes the forfeiture of approximately 15% of options granted (except those to the CEO). The following table summarizes information about the unvested stock option grants as of the fiscal years ended March 31: 2015 2014 Number of Weighted Number of Weighted Unvested at beginning of year 1,911 $ 6.22 — $ — Granted — — 1,958 6.22 Vested (408 ) 6.22 — — Forfeited — — (47 ) 6.22 Unvested at end of year 1,503 $ 6.22 1,911 $ 6.22 Restricted Stock On September 16, 2008, the Board of Directors adopted the restricted stock plan, which provides for the issuance of restricted stock awards to certain key employees. The restricted stock generally vest ratably over a five-year period from the original restricted stock grant date, contingent on the employee’s continuous employment by ADS. In certain instances, however, a portion of the grants vested immediately or for accounting purposes were deemed to have vested immediately, including the grants to the Chief Executive Officer, which do not have a substantial risk of forfeiture as a result of different vesting provisions. Under the restricted stock plan, vested shares are considered issued and outstanding. Employees with restricted stock have the right to dividends on the shares awarded (vested and unvested) in addition to voting rights on non-forfeited shares. The Company recognized compensation expense of $562, $1,849 and $1,535 in the fiscal years ended March 31, 2015, 2014 and 2013, respectively, relating to the issuance of these shares; of this amount, $0, $385 and $533 relates to the restricted shares that vested immediately during the fiscal years ended March 31, 2015, 2014 and 2013, respectively. We had approximately 335 shares available for grant under this plan as of March 31, 2015. The information about the unvested restricted stock grants as of March 31 is as follows: 2015 2014 2013 Number Weighted Number of Weighted Number of Weighted Unvested at beginning of year 311 $ 12.40 273 $ 11.63 179 $ 10.39 Granted — — 155 13.64 151 12.59 Vested (126 ) 12.01 (104 ) 11.78 (47 ) 10.29 Forfeited (2 ) 11.98 (13 ) 12.12 (10 ) 10.42 Unvested at end of year 183 $ 12.65 311 $ 12.40 273 $ 11.63 We expect most, if not all, restricted stock grants to vest. At March 31, 2015 and 2014, there was approximately $2,301 and $2,812, respectively, of unrecognized compensation expense related to the restricted stock that will be recognized over the weighted average service period remaining of 2.2 and 3.0 years, respectively. Non-Employee Director Compensation Plan On June 18, 2014, the Company amended its then-existing Stockholders’ Agreement to authorize 282 shares of restricted stock to be granted to non-employee members of its Board of Directors. The shares typically will vest one year from the date of issuance. Under this stock plan, the vested shares granted are considered issued and outstanding. Non-employee directors with this stock have the right to dividends on the shares awarded (vested and unvested) in addition to voting rights. On September 6, 2014, a total of 48 shares were granted to seven directors at a fair value of $18.88 per share. These shares vested on February 27, 2015. The Company recognized compensation expense of $900 for the fiscal year ended March 31, 2015, relating to the issuance of these shares. We had approximately 234 shares available for grant under this plan as of March 31, 2015. The following table summarizes information about the unvested Non-Employee Director Compensation stock grants as of March 31, 2015: Number of Weighted Unvested at beginning of year — $ — Granted 48 18.88 Vested (48 ) 18.88 Unvested at end of year — $ — As of March 31, 2015, there was no unrecognized compensation expense related to this restricted stock.

Income Taxes

Income Taxes	12 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	21. INCOME TAXES The components of Income before income taxes for the fiscal years ended March 31 are as follows: (Amounts in thousands) 2015 2014 2013 United States 17,312 25,497 25,116 Foreign 7,217 9,758 13,733 Total $ 24,529 $ 35,255 $ 38,849 The components of the provision for income taxes for the fiscal years ended March 31 consisted of the following: (Amounts in thousands) 2015 2014 2013 Current: Federal $ 20,462 $ 21,774 $ 17,282 State and local 3,659 3,859 3,664 Foreign 830 1,126 2,391 Total current tax provision 24,951 26,759 23,337 Deferred: Federal (13,437 ) (4,985 ) (5,344 ) State and local (2,173 ) (2,724 ) (1,653 ) Foreign 102 899 (405 ) Total deferred tax benefit (15,508 ) (6,810 ) (7,402 ) Total income tax provision $ 9,443 $ 19,949 $ 15,935 For the fiscal years ended March 31, our effective tax rate varied from the statutory Federal income tax rate as a result of the following factors: 2015 2014 2013 Federal statutory rate 35.0 % 35.0 % 35.0 % Redeemable convertible preferred stock dividend (0.8 ) (9.9 ) 0.6 ESOP stock appreciation 16.5 7.3 6.1 ESOP compensation for Special Dividend on unallocated shares — 22.5 — Effect of tax rate of foreign subsidiaries 2.5 3.7 (5.1 ) State and local taxes—net of federal income tax benefit 1.1 2.4 3.1 Noncontrolling interest (1.9 ) (5.5 ) (3.3 ) Uncertain tax position change (7.1 ) 5.9 0.5 Qualified production activity credit (7.6 ) (5.0 ) (1.7 ) Cumulative adjustments to deferred taxes 0.2 0.5 5.1 Other 0.6 (0.3 ) 0.7 Effective rate 38.5 % 56.6 % 41.0 % The Company’s effective tax rate will vary based on factors, including but not limited to, overall profitability, the geographical mix of income before taxes and discrete events. The decrease in the effective tax rate for 2015 was primarily driven by the absence of the Special Dividend payment to participants in the ESOP which increased the effective tax rate by 22.5% in 2014. For 2015, the ESOP stock appreciation impacted the rate by 16.5% due to the increase in stock value compared to original cost. Please refer to Notes 16. Employee Benefit Plans for additional information on the Special Dividend. The tax effect of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities at March 31 were comprised of: (Amounts in thousands) 2015 2014 Deferred tax assets: State income taxes $ 1,885 $ 2,684 ESOP loan repayment 1,421 1,473 Receivable and other allowances 2,534 1,189 Fuel hedge 3,534 471 Inventory 7,564 1,173 Non-Qualified stock options 2,855 1,099 Accrued rebates 1,378 1,626 Worker’s compensation 667 754 Contingent consideration 247 252 Purchase card accrual 232 240 Other 1,041 620 Foreign NOL’s 1,504 1,119 Valuation allowance (1,504 ) (1,119 ) Total deferred tax assets 23,358 11,581 Deferred tax liabilities: Intangible assets 10,984 11,208 Property, plant and equipment 51,958 47,021 Leases 4,036 6,282 Deferred system costs 3,160 4,432 Goodwill 2,736 2,061 Other 1,487 716 Total deferred tax liabilities 74,361 71,720 Net deferred tax liability $ 51,003 $ 60,139 Net deferred tax assets are included in Deferred income taxes and other current assets and Other assets on the Consolidated Balance Sheets. The related balances at March 31 were as follows: (Amounts in thousands) 2015 2014 Net current deferred tax assets $ 14,085 $ 6,194 Net non-current deferred tax liabilities $ 65,088 $ 66,333 The Company has not provided for U.S. federal income taxes or foreign withholding taxes on approximately $30,218 of undistributed earnings of its foreign subsidiaries at March 31, 2015 because such earnings are intended to be reinvested indefinitely with the exception of cash dividends paid by our ADS Mexicana joint venture. It is not practicable to estimate the amount of U.S. tax that might be payable on the eventual remittance of such earnings. Accounting for uncertain tax positions As of March 31, 2015, the Company had unrecognized tax benefit of $10,496, which if resolved favorably, would reduce income tax expense by $10,151. A reconciliation of the beginning and ending amounts of unrecognized tax benefits for the years ended March 31, 2013, March 31, 2014 and 2015 is as follows: (Amounts in thousands) Balance as of March 31, 2012 $ 1,615 Increases in tax positions for prior years 10,969 Decreases in tax positions for prior years (8 ) Settlements — Lapse of statute of limitations (1,875 ) Balance as of March 31, 2013 10,701 Tax positions taken in current year 2,954 Decreases in tax positions for prior years (47 ) Increases in tax positions for prior years 844 Settlements — Lapse of statute of limitations (1,545 ) Balance as of March 31, 2014 12,907 Decreases in tax positions for prior years (680 ) Increases in tax positions for prior years 336 Settlements — Lapse of statute of limitations (2,067 ) Balance as of March 31, 2015 $ 10,496 The Company recognized in its Consolidated Statements of Operations potential accrued interest and penalties related to unrecognized tax benefits of $460 at March 31, 2015. It is reasonably possible that there could be a change in the amount of unrecognized tax benefits within the next twelve months due to activities of the IRS or other taxing authorities, including proposed assessments of additional tax, possible settlement of audit issues, or the expiration of applicable statutes of limitation. The Company is currently open to audit under the statute of limitations by the IRS for the fiscal years ended March 31, 2013 through March 31, 2015. The majority of the Company’s state income tax returns are open to audit under the statute of limitations for the years ended March 31, 2012 through March 31, 2015. The foreign income tax returns are open to audit under the statute of limitations for the years ended March 31, 2010 through March 31, 2015.

Net Income (Loss) Per Share

Net Income (Loss) Per Share	12 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Net Income (Loss) Per Share	22. NET INCOME (LOSS) PER SHARE Basic net income (loss) per share is calculated by dividing the Net income (loss) available to common stockholders by the weighted-average number of common shares outstanding during the period, without consideration for common stock equivalents. Diluted net income (loss) per share is computed by dividing the Net income (loss) available to common stockholders by the weighted-average number of common stock equivalents outstanding for the period. Holders of unvested restricted stock have non-forfeitable 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 (loss) 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 stockholders 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 March 31, 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. The Company’s Redeemable common stock is included in the weighted-average number of common shares outstanding for calculating basic and diluted net income per share. The following table presents information necessary to calculate net (loss) income per share for the fiscal years ended March 31, 2015, 2014 and 2013, 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: (Amounts in thousands, except per share data) 2015 2014 2013 NET (LOSS) INCOME PER SHARE — BASIC: Net income attributable to ADS $ 8,620 $ 8,627 $ 20,660 Adjustment for: Change in fair value of Redeemable convertible preferred stock (11,054 ) (3,979 ) (5,869 ) Dividends paid to Redeemable convertible preferred stockholders (661 ) (10,139 ) (735 ) Dividends paid to unvested restricted stockholders (11 ) (418 ) (52 ) Net (loss) income available to common stockholders and participating securities (3,106 ) (5,909 ) 14,004 Undistributed income allocated to participating securities — — (1,127 ) Net (loss) income available to common stockholders — Basic (3,106 ) (5,909 ) 12,877 Weighted average number of common shares outstanding — Basic 51,344 47,277 46,698 Net (loss) income per common share — Basic $ (0.06 ) $ (0.12 ) $ 0.28 NET (LOSS) INCOME PER SHARE — DILUTED: Net (loss) income available to common stockholders — Basic (3,106 ) (5,909 ) $ 12,877 Weighted average number of common shares outstanding — Basic 51,344 47,277 46,698 Assumed exercise of stock options — — 551 Weighted average number of common shares outstanding — Diluted 51,344 47,277 47,249 Net (loss) income per common share — Diluted $ (0.06 ) $ (0.12 ) $ 0.27 Potentially dilutive securities excluded as ant-dilutive 4,454 535 78

Business Segment Information

Business Segment Information	12 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Business Segment Information	23. BUSINESS SEGMENT 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 Our Domestic segment manufactures and markets products throughout the United States. We maintain and serve these markets through product distribution relationships with many of the largest national and independent waterworks distributors, major national retailers as well as an extensive network of hundreds of small to medium-sized distributors across the U.S. We also sell through a broad variety of buying groups and co-ops in the United States. Products include single wall pipe, N-12 HDPE pipe sold into the Storm sewer and Infrastructure markets, High Performance PP pipe sold into the Storm sewer and sanitary sewer markets, and our broad line of Allied Products including StormTech, Nyloplast, ARC Septic Chambers, Inserta Tee, BaySaver filters and water quality structures, Fittings, and FleXstorm. Our Domestic segment sales are diversified across all regions of the country. International Our International segment manufactures and markets products in certain regions outside of the United States, with a growth strategy focused on our owned facilities in Canada and through our joint-ventures with local partners in Mexico, Central America and South America. Our joint venture strategy provides us with local and regional access to new markets such as Brazil, Chile, Argentina, Peru and Colombia. Our Mexican joint venture (ADS Mexicana) primarily serves the Mexican markets, while our South American Joint Venture (Tigre-ADS) is our primary channel to serve the South American markets. Our International product line includes single wall pipe, N-12 HDPE pipe, and High Performance PP pipe. The Canadian market also sells our broad line of Allied Products, while sales in Latin America are currently concentrated in fittings and Nyloplast. The following table sets forth reportable segment information with respect to the amount of Net sales contributed by each class of similar products in each of the fiscal years ended March 31: (Amounts in thousands) 2015 2014 2013 Domestic Pipe $ 771,214 $ 700,270 $ 655,288 Allied Products 256,719 235,022 223,676 Total domestic 1,027,933 935,292 878,964 International Pipe 125,407 107,078 113,236 Allied Products 26,733 25,410 24,902 Total international 152,140 132,488 138,138 Total Net sales $ 1,180,073 $ 1,067,780 $ 1,017,102 The following sets forth certain additional financial information attributable to our reportable segments for the fiscal years ended March 31: (Amounts in thousands) 2015 2014 2013 Net Sales Domestic $ 1,027,933 $ 935,292 $ 878,964 International 152,140 132,488 138,138 Total $ 1,180,073 $ 1,067,780 $ 1,017,102 Gross Profit Domestic $ 180,664 $ 166,185 $ 157,820 International 25,449 27,785 30,141 Total $ 206,113 $ 193,970 $ 187,961 Segment Adjusted EBITDA Domestic $ 129,067 $ 133,996 $ 109,652 International 14,710 18,759 22,647 Total $ 143,777 $ 152,755 $ 132,299 Interest expense Domestic $ 19,308 $ 18,659 $ 18,390 International 60 148 136 Total $ 19,368 $ 18,807 $ 18,526 Depreciation and amortization Domestic $ 59,397 $ 57,834 $ 57,728 International 6,075 5,840 5,374 Total $ 65,472 $ 63,674 $ 63,102 Equity in net (loss) income of unconsolidated affiliates Domestic $ 289 $ 417 $ — International (2,624 ) (3,503 ) 266 Total $ (2,335 ) $ (3,086 ) $ 266 Capital expenditures Domestic $ 28,744 $ 35,783 $ 36,527 International 2,735 3,838 2,229 Total $ 31,479 $ 39,621 $ 38,756 The following sets forth certain additional financial information attributable to our reporting segments as of March 31: 2015 2014 2013 Investments in unconsolidated affiliates Domestic $ 7,957 $ 5,202 $ — International 17,081 18,422 21,899 Total $ 25,038 $ 23,624 $ 21,899 Total identifiable assets Domestic $ 942,267 $ 889,263 $ 838,489 International 168,624 113,612 114,243 Eliminations (69,193 ) (13,308 ) (1,967 ) Total $ 1,041,699 $ 989,567 $ 950,765 Reconciliation of Segment EBITDA and Segment Adjusted EBITDA to Net income 2015 2014 2013 (Amounts in thousands) Domestic International Domestic International Domestic International Net income $ 7,198 $ 5,553 $ 4,962 $ 7,258 $ 11,180 $ 12,000 Depreciation and amortization 59,397 6,075 57,834 5,840 57,728 5,374 Interest expense 19,308 60 18,659 148 18,390 136 Income tax expense 8,510 933 17,924 2,025 13,949 1,986 Segment EBITDA 94,413 12,621 99,379 15,271 101,247 19,496 Derivative fair value adjustments 7,774 (28 ) (53 ) — (4 ) — Foreign currency transaction losses (gains) 5,636 (232 ) — 845 — 1,085 Loss (gain) on sale of disposal or businesses 257 105 (2,817 ) (46 ) (880 ) (71 ) Unconsolidated affiliates interest, taxes, depreciation and amortization (a) 1,341 2,244 156 2,689 — 2,137 Special Dividend compensation — — 22,624 — — — Contingent consideration remeasurement 174 — 738 — (74 ) — Stock-based compensation 5,880 — 4,518 — 2,080 — ESOP deferred stock-based compensation 12,144 — 7,891 — 7,283 — Transaction costs (b) 1,448 — 1,560 — — — Segment Adjusted EBITDA $ 129,067 $ 14,710 $ 133,996 $ 18,759 $ 109,652 $ 22,647 (a) Includes our proportional share of interest, income taxes, depreciation and amortization related to our South American Joint Venture, our BaySaver Joint Venture and our Tigre-ADS USA Joint Venture, which are accounted for under the equity method of accounting. Fiscal year 2014 includes our proportional share of an asset impairment of $1,022 recorded by our South American Joint Venture. (b) Represents expenses recorded related to legal, accounting and other professional fees incurred in connection with our debt refinancing, completion of the IPO and secondary public offering and asset acquisitions and dispositions. Geographic Sales and Assets Information Net sales are attributed to the geographic location based on the location of the customer. The table below represents the Net sales and long-lived asset information by geographic location for each of the fiscal years ended March 31: (Amounts in thousands) 2015 2014 2013 Net Sales North America $ 1,161,909 $ 1,046,595 $ 996,935 Other 18,164 21,185 20,167 Total $ 1,180,073 $ 1,067,780 $ 1,017,102 (Amounts in thousands) 2015 2014 Long-Lived Assets* North America $ 387,132 $ 357,463 Other 17,081 18,422 Total $ 404,213 $ 375,885 * For segment reporting purposes, long-lived assets include Investments in unconsolidated affiliates, Central parts and Property, plant and equipment.

Supplemental Disclosures of Cas

Supplemental Disclosures of Cash Flow Information	12 Months Ended
	Mar. 31, 2015
Supplemental Cash Flow Elements [Abstract]
Supplemental Disclosures of Cash Flow Information	24. SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION The increase (decrease) in cash due to the changes in working capital accounts for the fiscal years ended March 31, were as follows: (Amounts in thousands) 2015 2014 2013 Changes in working capital: Receivables $ (10,351 ) $ (5,876 ) $ 24,755 Inventories (7,563 ) (39,017 ) (32,163 ) Prepaid expenses and other current assets 1,953 (3,298 ) 367 Accounts payable, accrued expenses, and other liabilities (995 ) 10,771 (6,276 ) Total $ (16,956 ) $ (37,420 ) $ (13,317 ) Supplemental disclosures of cash flow information for the fiscal years ended March 31 were as follows: (Amounts in thousands) 2015 2014 2013 Supplemental disclosures of cash flow information — cash paid during years: Interest $ 18,709 $ 17,267 $ 18,392 Income taxes $ 28,503 $ 23,701 $ 23,924 (Amounts in thousands) 2015 2014 2013 Supplemental schedule of noncash investing and financing activities: Redeemable convertible preferred stock dividend $ 127 $ 118 $ 110 Redemption of common stock to exercise stock options 93 1,187 805 Receivable recorded to exercise stock options — 76 142 Purchases of plant, property, and equipment included in accounts payable 124 682 3,769 Receivable recorded for sale of businesses 600 1,241 1,800 ESOP distributions in common stock 6,133 — — Inventory contributed for Investment in unconsolidated affiliate — 1,285 — Assets acquired and obligation incurred under capital lease 24,047 24,902 16,715 Lease obligation retired upon disposition of leased assets 779 3,708 109 Reclassification of liability classified stock options upon initial public offering 1,522 — — Reclassification of deferred public offering cost asset upon initial public offering $ 456 $ — $ —

Quarterly Financial Information

Quarterly Financial Information (Unaudited)	12 Months Ended
	Mar. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Quarterly Financial Information (Unaudited)	25. QUARTERLY FINANCIAL INFORMATION (UNAUDITED) The following tables set forth certain historical unaudited consolidated condensed quarterly financial information for each of the quarters during the years ended March 31, 2015 and March 31, 2014. This unaudited information has been restated for the effects of the misstatements more fully described in Note 2. Restatement of Previously Issued Financial Statements, has been prepared on a basis consistent with our annual financial statements and includes all adjustments necessary for the fair presentation of the unaudited quarterly data. Additional information about the effects of the restatement on the historical unaudited consolidated condensed quarterly financial information can be found in the Forms 10-Q/A for the quarters ended June 30, 2014, September 30, 2014 and December 31, 2014, which are being filed concurrently with this Form 10-K. The results of operations for any quarter are not necessarily indicative of results that we may achieve for any subsequent periods. Fiscal Year 2015 For the Three Months Ended March 31, 2015 December 31, 2014 September 30, 2014 June 30, 2014 (in thousands, except per (As Reported) (As Restated) (As Reported) (As Restated) (As Reported) (As Restated) Net sales $ 207,054 $ 278,176 $ 279,871 $ 364,724 $ 366,714 $ 328,297 $ 326,434 Gross profit 26,314 50,117 49,178 82,442 69,763 72,033 60,858 Net (loss) income (13,734 ) 499 (1,953 ) 22,768 18,997 14,669 9,441 Net (loss) income attributable to ADS (13,465 ) (367 ) (3,325 ) 22,390 16,844 14,241 8,566 Net (loss) income per share Basic $ (0.26 ) $ (0.01 ) $ (0.07 ) $ 0.51 $ 0.41 $ (0.09 ) $ (0.21 ) Diluted $ (0.26 ) $ (0.01 ) $ (0.07 ) $ 0.51 $ 0.41 $ (0.09 ) $ (0.21 ) Fiscal Year 2014 For the Three Months Ended March 31, 2014 December 31, 2013 September 30, 2013 June 30, 2013 (in thousands, except (As (As (As (As (As (As (As (As Net sales $ 181,232 $ 181,830 $ 261,435 $ 260,644 $ 333,240 $ 332,727 $ 293,102 $ 292,579 Gross profit 23,905 12,690 49,764 59,342 73,219 65,588 66,003 56,350 Net (loss) income (11,780 ) (16,168 ) (9,839 ) (2,818 ) 17,783 16,657 16,710 14,549 Net (loss) income attributable to ADS (12,170 ) (14,210 ) (10,324 ) (4,877 ) 17,322 14,740 16,296 12,974 Net (loss) income per share Basic $ (0.32 ) $ (0.41 ) $ (0.32 ) $ (0.21 ) $ 0.26 $ 0.21 $ 0.27 $ 0.21 Diluted $ (0.32 ) $ (0.41 ) $ (0.32 ) $ (0.21 ) $ 0.26 $ 0.21 $ 0.27 $ 0.21

Schedule II - Consolidated Valu

Schedule II - Consolidated Valuation and Qualifying Accounts	12 Months Ended
	Mar. 31, 2015
Valuation and Qualifying Accounts [Abstract]
Schedule II - Consolidated Valuation and Qualifying Accounts	SCHEDULE II ADVANCED DRAINAGE SYSTEMS, INC. AND SUBSIDIARIES Consolidated Valuation and Qualifying Accounts for the Fiscal Years Ended March 31, 2015, 2014 and 2013 (in thousands): Allowance for Doubtful Accounts: Year ended March 31, Balance at Charged Charged to (1) Deductions Balance at 2015 $ 4,490 $ 1,914 $ (291 ) $ (690 ) $ 5,423 2014 6,145 (71 ) (67 ) (1,517 ) 4,490 (2) 2013 5,359 1,687 (2 ) (899 ) 6,145 (2) (1) Amounts represent the impact of foreign currency translation. (2) The allowance for doubtful accounts as previously reported at March 31, 2014 and 2013 was $3,977 and $4,689, respectively.

Background and Summary of Sig36

Background and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation Our consolidated financial statements include the Company, our wholly owned subsidiaries, our majority owned subsidiaries, including ADS Mexicana, S.A. de C.V. (“ADS Mexicana”), 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 Consolidated Balance Sheets and the related equity in earnings from these investments are included in Equity in net loss (income) of unconsolidated affiliates in our Consolidated Statements of Operations. All intercompany balances and transactions have been eliminated in consolidation.
Estimates	Estimates The preparation of our consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingencies and liabilities at the balance sheet date and the reported amounts of revenues and expenses during the reporting period. Significant estimates include, but are not limited to, our allowance for doubtful accounts, inventory, useful lives of our property, plant and equipment and amortizing intangible assets, determination of the proper accounting for leases, accounting for investments, evaluation of goodwill, intangible assets and other long-lived assets for impairment, accounting for stock-based compensation and our ESOP, valuation of our Redeemable common stock and Redeemable convertible preferred stock, determination of allowances for sales returns, rebates and discounts, determination of the valuation allowance, if any, on deferred tax assets, and reserves for uncertain tax positions. Management’s estimates and assumptions are evaluated on an ongoing basis and are based on historical experience, current conditions and available information. Management believes the accounting estimates are appropriate and reasonably determined; however, due to the inherent uncertainties in making these estimates, actual results could differ from those estimates.
Allowance for Doubtful Accounts	Allowance for Doubtful Accounts Credit is extended to customers based on an evaluation of their financial condition and collateral is generally not required. The evaluation of the customer’s financial condition is performed to reduce the risk of loss. Accounts receivable are evaluated for collectability based on numerous factors, including the length of time individual receivables are past due, past transaction history with customers, their credit worthiness and the economic environment. An allowance for doubtful accounts is estimated as a percentage of aged receivables. This estimate is periodically adjusted when management becomes aware of a specific customer’s inability to meet its financial obligations (e.g., bankruptcy filing) or as a result of changes in historical collection patterns.
Inventories	Inventories Inventories are stated at the lower of cost or market value. The Company’s inventories are maintained on the first-in, first-out (“FIFO”) method. Costs include the cost of acquiring materials, including in-bound freight from vendors and freight incurred for the transportation of raw materials or finished goods between the Company’s manufacturing plants and its distribution centers, direct and indirect labor, factory overhead and certain corporate overhead costs related to the production of inventory. The portion of fixed manufacturing overhead that relates to capacity in excess of our normal capacity is expensed in the period in which it is incurred and is not included in inventory. Market value of inventory is established based on the lower of cost or estimated net realizable value, with consideration given to deterioration, obsolescence, and other factors. The Company periodically evaluates the carrying value of inventories and adjustments are made whenever necessary to reduce the carrying value to net realizable value.
Property, Plant and Equipment and Depreciation Method	Property, Plant and Equipment and Depreciation Method Property, plant and equipment are recorded at cost less accumulated depreciation, with the exception of assets acquired through acquisitions, which are initially recorded at fair value. Equipment acquired under capital lease is recorded at the lower of fair market value or the present value of the future minimum lease payments. Depreciation is computed for financial reporting purposes using the straight-line method over the estimated useful lives of the related assets or the lease term, if shorter, as follows: Years Buildings 40 Machinery and equipment 3 — 15 Leasehold improvements Shorter of useful Costs of additions and major improvements are capitalized, whereas maintenance and repairs that do not improve or extend the life of the asset are charged to expense as incurred. When assets are retired or disposed, the cost and related accumulated depreciation are removed from the asset accounts and any resulting gain or loss is reflected in Loss (gain) on disposal of assets or businesses in our Consolidated Statements of Operations. Construction in progress is also recorded at cost and includes capitalized interest, capitalized payroll costs and related costs such as taxes and other fringe benefits. Interest capitalized was $518, $611, and $1,036 during the fiscal years ended March 31, 2015, 2014 and 2013, respectively.
Goodwill	Goodwill The Company records acquisitions resulting in the consolidation of an enterprise using the acquisition method of accounting. Under this method, we record the assets acquired, including intangible assets that can be identified, and liabilities assumed based on their estimated fair values at the date of acquisition. The purchase price in excess of the fair value of the identifiable assets acquired and liabilities assumed is recorded as goodwill. Goodwill is reviewed annually for impairment as of March 31 or whenever events or changes in circumstances indicate the carrying value may be greater than fair value. The goodwill impairment analysis is comprised of two steps. The first step requires the comparison of the fair value of the applicable reporting unit to its respective carrying value. If the fair value of the reporting unit exceeds the carrying value of the net assets assigned to that unit, goodwill is not considered impaired and the Company is not required to perform further testing. If the carrying value of the net assets assigned to the reporting unit exceeds the fair value of the reporting unit, then the Company must perform the second step of the impairment test in order to determine the implied fair value of the reporting unit’s goodwill. If the carrying value of a reporting unit’s goodwill exceeds its implied fair value, then we would record an impairment loss equal to the difference. With respect to this testing, a reporting unit is a component of the Company for which discrete financial information is available and regularly reviewed by management. Implied fair value of goodwill is determined by considering both the income and market approach. Determining the fair value of a reporting unit is judgmental in nature and involves the use of significant estimates and assumptions. These estimates and assumptions include revenue growth rates and operating margins used to calculate projected future cash flows, risk-adjusted discount rates, future economic and market conditions, and determination of appropriate market comparables. The fair value estimates are based on assumptions management believes to be reasonable, but are inherently uncertain.
Intangible Assets - Definite-Lived	Intangible Assets — Definite-Lived Definite-lived intangible assets are amortized using the straight-line method over their estimated useful lives, and are tested for recoverability whenever events or changes in circumstances indicate that carrying amounts of the asset group may not be recoverable. Asset groups are established primarily by determining the lowest level of cash flows available. If the estimated undiscounted future cash flows are less than the carrying amounts of such assets, an impairment loss is recognized to the extent the fair value of the asset less any costs of disposition is less than the carrying amount of the asset. Determining the fair value of these assets is judgmental in nature and involves the use of significant estimates and assumptions.
Intangible Assets - Indefinite-Lived	Intangible Assets — Indefinite-Lived 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. Determining the fair value of these assets is judgmental in nature and involves the use of significant estimates and assumptions. The Company bases its fair value estimates on assumptions it believes to be reasonable, but that are inherently uncertain. To estimate the fair value of these indefinite-lived intangible assets, the Company uses an income approach, which utilizes a market derived rate of return to discount anticipated performance. An impairment loss is recognized when the estimated fair value of the intangible asset is less than the carrying value.
Other Assets	Other Assets Other assets include investments in unconsolidated affiliates accounted for under the equity method, capitalized software development costs, deposits, deferred financing costs, cash surrender value of officer life insurance on key senior management executives, Central parts, and other. The Company capitalizes development costs for internal use software. Capitalization of software development costs begins in the application development stage and ends when the asset is placed into service. The Company amortizes such costs using the straight-line method over estimated useful lives of 2 to 10 years, which is included in General and administrative expense, Selling expense or Cost of goods sold within our Consolidated Statements of Operations depending on the nature of the asset and its intended use. Amortization expense related to deferred financing costs is included in Interest expense within our Consolidated Statements of Operations. Central parts represent spare production equipment items which are used to replace worn or broken production equipment parts and help reduce the risk of prolonged equipment outages. The cost of Central parts is amortized on a straight line basis over estimated useful lives of 8 to 30 years. Other assets as of the fiscal years ended March 31 consisted of the following: (Amounts in thousands) 2015 2014 Investments in unconsolidated affiliates $ 25,038 $ 23,624 Capitalized software development costs, net 7,276 10,511 Deposits 4,947 5,192 Deferred financing costs 4,543 5,953 Cash surrender value of officer life insurance 9,953 8,893 Central parts 2,108 1,910 Other 7,302 9,364 Total other assets $ 61,167 $ 65,447 The following table sets forth amortization expense related to Other assets in each of the fiscal years ending March 31: (Amounts in thousands) 2015 2014 2013 Capitalized software development costs $ 3,550 $ 3,270 $ 3,539 Deferred financing costs 1,410 1,591 2,008 Central Parts 55 43 41 Other 1,977 1,986 1,970
Leases	Leases Leases are reviewed for capital or operating classification at their inception. The Company uses the lower of the rate implicit in the lease or its incremental borrowing rate in the assessment of lease classification and assumes the initial lease term includes cancellable and renewal periods that are reasonably assured. For leases classified as capital leases at lease inception, we record a capital lease asset and lease financing obligation equal to the lesser of the present value of the minimum lease payments or the fair market value of the leased asset. The capital lease asset is recorded in Property, plant and equipment, net and amortized to its expected residual value at the end of the lease term using the straight-line method, and the lease financing obligation is amortized using the interest method over the lease term with the rental payments being allocated to principal and interest. For leases classified as operating leases, we record rent expense over the lease term using the straight-line method.
Foreign Currency Translation	Foreign Currency Translation Assets and liabilities of foreign subsidiaries with a functional currency other than the U.S. dollar are translated into U.S. dollars at the current rate of exchange on the last day of the reporting period. Revenues and expenses are translated at a monthly average exchange rate and equity transactions are translated using either the actual exchange rate on the day of the transaction or a monthly average historical exchange rate.
Net Sales	Net Sales The Company sells pipe products and related water management products. ADS ships products to customers predominantly by internal fleet and to a lesser extent by third-party carriers. The Company does not provide any additional revenue generating services after product delivery. Sales, net of sales tax and allowances for returns, rebates and discounts are recognized from product sales when persuasive evidence of an arrangement exists, delivery has occurred, the price to the buyer is fixed or determinable and collectability is reasonably assured. ADS does not ship an order until a customer purchase order or sales order has been received that includes the pricing and quantity of the products in the order, which establishes both persuasive evidence of an arrangement and that the price is fixed or determinable. Title to the products and risk of loss generally passes to the customer upon delivery. ADS performs credit check procedures on all new customers, establishes credit limits accordingly, and monitors the creditworthiness of existing customers, which is the basis for concluding that collectability is reasonably assured.
Shipping Costs	Shipping Costs Shipping costs are incurred to physically move our raw materials, tooling and products between manufacturing and distribution facilities and from our production or distribution facilities to our customers. Shipping costs for the fiscal years ended March 31, 2015, 2014 and 2013 were $120,993, $111,862 and $110,402, respectively, and are included in Cost of goods sold. In certain instances, we bill shipping costs to our customers. Shipping costs billed to customers were $9,282, $8,864 and $9,133 during 2015, 2014 and 2013, respectively, and are included in Net sales.
Stock-Based Compensation	Stock-Based Compensation ADS has several programs for stock-based payments to employees and directors. Equity-classified awards are measured based on the grant-date estimated fair value of each award, net of estimated forfeitures, and liability-classified awards are re-measured at fair value, net of estimated forfeitures, at each reporting date. Compensation expense is recognized over the employee’s requisite service period, which is generally the vesting period of the grant. The fair value of each stock option granted is estimated using the Black-Scholes option pricing model. Compensation expense is recorded for new awards and existing awards that are modified, repurchased, or forfeited. For details of our stock-based compensation award programs, see Note 20. Stock-Based Compensation.
Advertising	Advertising We expense advertising costs as incurred. Advertising costs are recorded in Selling expenses in the Consolidated Statements of Operations. The total advertising costs were $2,477, $2,335 and $2,731 for the fiscal years ended March 31, 2015, 2014 and 2013, respectively.
Self-Insurance	Self-Insurance The Company is self-insured for short term disability and medical coverage it provides for substantially all eligible employees. The Company is self-insured for medical claims up to the individual and aggregate stop-loss coverage limits. Management accrues for claims incurred but not reported based on our estimate of future claims related to events that occurred prior to our fiscal year end if we have not met the aggregate stop-loss coverage limit. Amounts contributed totaled $32,002, $29,484, and $30,775 for the fiscal years ended March 31, 2015, 2014 and 2013, respectively, of which employees contributed $4,067, $4,032 and $806, respectively. ADS is also self-insured for various other general insurance programs to the extent of the applicable deductible limits on the Company’s insurance coverage. These programs include primarily automobile, general liability and employment practices coverage with deductibles ranging from $250 to $500 per occurrence or claim incurred. Amounts expensed during the period, including an estimate for claims incurred but not reported at year end, were $569, $447 and $934, for the years ended March 31, 2015, 2014 and 2013, respectively. ADS is also self-insured for workers’ compensation insurance with stop-loss coverage for claims that exceed $250 per incident up to the respective state statutory limits. Amounts expensed, including an estimate for claims incurred but not reported, were $1,369, $1,395 and $1,184 for the fiscal years ended March 31, 2015, 2014 and 2013, respectively.
Income Taxes	Income Taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized and represent the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. They are measured using the enacted tax rates expected to apply to taxable income in the years in which the related temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. The deferred income tax provision represents the change during the reporting period in the deferred tax assets and deferred tax liabilities. Penalties and interest recorded on income taxes payable are recorded as part of Income tax expense. The Company determines whether an uncertain tax position of the Company is more likely than not to be sustained upon examination, including resolution of any related appeals or litigation process, based upon the technical merits of the position. For tax positions meeting the more likely than not threshold, the tax amount recognized in the financial statements is the amount that has a greater than 50% likelihood of being realized upon ultimate settlement with the relevant taxing authority.
Fair Values	Fair Values The fair value framework requires the categorization of assets and liabilities into three levels based upon assumptions (inputs) used to price the assets or liabilities. Level 1 provides the most reliable measure of fair value, whereas Level 3 generally requires significant management judgment. The three levels are defined as follows: Level 1 — Unadjusted quoted prices in active markets for identical assets and liabilities. Level 2 — Observable inputs other than those included in Level 1. For example, quoted prices for similar assets or liabilities in active markets or quoted prices for identical assets or liabilities in inactive markets. Level 3 — Unobservable inputs reflecting management’s own assumptions about the inputs used in pricing the asset or liability. The carrying amounts of current financial assets and liabilities approximate fair value because of the immediate or short-term maturity of these items. The carrying and fair values of the Company’s Senior Notes (discussed in Note 13. Debt) were $100,000 and $103,590, respectively, as of March 31, 2015 and $100,000 and $104,511, respectively, at March 31, 2014. The fair value of the Senior Notes was determined based on a comparison of the interest rate and terms of such borrowings to the rates and terms of similar debt available for the period. Management believes the carrying amount on the remaining long-term debt is not materially different from its fair value as the interest rates and terms of the borrowings are similar to currently available borrowings. The categorization of the framework used to evaluate this debt is considered Level 2. See also Note 9. Fair Value Measurement to these financial statements.
Concentrations of Risk	Concentrations of Risk We have a large, active customer base of over 18,000 customers with one customer representing more than 10% of annual net sales. Such customer accounted for 10.7%, 10.6% and 9.7% of fiscal year 2015, 2014 and 2013 net sales, respectively. Our customer base is diversified across the range of end markets that we serve. Financial instruments that potentially subject the Company to a concentration of credit risk consist principally of Receivables. The Company provides its products to customers based on an evaluation of the customers’ financial condition, generally without requiring collateral. Exposure to losses on Receivables is principally dependent on each customer’s financial condition. The Company performs ongoing credit evaluations of its customers. The Company monitors the exposure for credit losses and maintains allowances for anticipated losses. Concentrations of credit risk with respect to Receivables are limited due to the large number of customers comprising the Company’s customer base and their dispersion across many different geographies although one customer accounts for approximately 14% of our receivables at March 31, 2015.
Derivatives	Derivatives We recognize derivative instruments as either assets or liabilities and measure those instruments at fair value. We use interest rate swaps, commodity options in the form of collars and swaps, and foreign currency forward contracts to manage our various exposures to interest rate, commodity price, and exchange rate fluctuations. These instruments do not qualify for hedge accounting treatment and therefore, gains and losses from contract settlements and changes in fair value of the derivative instruments are recognized in Other miscellaneous expense (income), net in the Consolidated Statements of Operations. Our policy is to present all derivative balances on a gross basis. The Company also has forward purchase agreements in place with certain resin suppliers for virgin polyethylene resin. The agreements specify a fixed amount of virgin resin material to be purchased at a fixed price for a given period of time in quantities the Company will use in the normal course of business, and therefore, are not subject to the guidance provided in ASC 810-15. The cost of such resin is recognized in Cost of goods sold in the Consolidated Statements of Operations.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Revenue Recognition Consolidation Debt Issuance Costs Measurement of Inventory Business Combinations — Deferred Tax Assets and Liabilities Equity Investments and Financial Liabilities Leases With the exception of pronouncements described above, there have been no new accounting pronouncements that have significance, or potential significance, to our consolidated financial statements.

Background and Summary of Sig37

Background and Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Estimated Useful Lives of Related Assets	Depreciation is computed for financial reporting purposes using the straight-line method over the estimated useful lives of the related assets or the lease term, if shorter, as follows: Years Buildings 40 Machinery and equipment 3 — 15 Leasehold improvements Shorter of useful
Other Assets	The cost of Central parts is amortized on a straight line basis over estimated useful lives of 8 to 30 years. Other assets as of the fiscal years ended March 31 consisted of the following: (Amounts in thousands) 2015 2014 Investments in unconsolidated affiliates $ 25,038 $ 23,624 Capitalized software development costs, net 7,276 10,511 Deposits 4,947 5,192 Deferred financing costs 4,543 5,953 Cash surrender value of officer life insurance 9,953 8,893 Central parts 2,108 1,910 Other 7,302 9,364 Total other assets $ 61,167 $ 65,447
Amortization Expense Related to Other Assets	The following table sets forth amortization expense related to Other assets in each of the fiscal years ending March 31: (Amounts in thousands) 2015 2014 2013 Capitalized software development costs $ 3,550 $ 3,270 $ 3,539 Deferred financing costs 1,410 1,591 2,008 Central Parts 55 43 41 Other 1,977 1,986 1,970

Restatement of Previously Iss38

Restatement of Previously Issued Financial Statements (Tables)	12 Months Ended
	Mar. 31, 2015
Accounting Changes and Error Corrections [Abstract]
Schedule of Adjustments to Consolidated Financial Statements	The net effect of the restatement described above on the Company’s previously reported consolidated statements of operations for the years ended March 31, 2014 and 2013 is as follows: For the Year Ended March 31, 2014 Adjustments (Amounts in thousands, except As Previously Leases Inventory Long-Lived ADS Income Taxes As Restated Net sales $ 1,069,009 $ — $ — $ — $ (1,129 ) $ (100 ) $ 1,067,780 Cost of goods sold 856,118 (1,223 ) 17,949 (336 ) 830 472 873,810 Gross profit 212,891 1,223 (17,949 ) 336 (1,959 ) (572 ) 193,970 Operating expenses: Selling 75,024 (479 ) (344 ) 415 (943 ) 369 74,042 General and administrative 78,478 (393 ) (16,122 ) 284 (1,820 ) (666 ) 59,761 Gain on disposal of assets or businesses (5,338 ) 1,852 — 623 — — (2,863 ) Intangible amortization 11,412 — — (1,267 ) — — 10,145 Income from operations 53,315 243 (1,483 ) 281 804 (275 ) 52,885 Other expense: Interest expense 16,141 2,666 — — — — 18,807 Other miscellaneous expense (income), net 133 — — (25 ) (1,200 ) (85 ) (1,177 ) Income before income taxes 37,041 (2,423 ) (1,483 ) 306 2,004 (190 ) 35,255 Income tax expense 22,575 — — — — (2,626 ) 19,949 Equity in net loss of unconsolidated affiliates 1,592 — — — — 1,494 3,086 Net income 12,874 (2,423 ) (1,483 ) 306 2,004 942 12,220 Less net income attributable to noncontrolling interest 1,750 — — — 1,527 316 3,593 Net income attributable to ADS 11,124 (2,423 ) (1,483 ) 306 477 626 8,627 Change in fair value of redeemable convertible preferred stock (3,979 ) — — — — — (3,979 ) Dividends to redeemable convertible preferred stockholders (10,139 ) — — — — — (10,139 ) Dividends paid to unvested restricted stockholders (418 ) — — — — — (418 ) Net loss available to common stockholders and participating securities (3,412 ) (2,423 ) (1,483 ) 306 477 626 (5,909 ) Undistributed income allocated to participating securities — — — — — — — Net loss available to common stockholders $ (3,412 ) $ (2,423 ) $ (1,483 ) $ 306 $ 477 $ 626 $ (5,909 ) Weighted average common shares outstanding: Basic 47,277 47,277 Diluted 47,277 47,277 Net loss per share: Basic $ (0.07 ) $ (0.12 ) Diluted $ (0.07 ) $ (0.12 ) Cash dividends declared per share $ 1.68 $ 1.68 For the Year Ended March 31, 2013 Adjustments (Amounts in thousands, except per share data) As Previously Leases Inventory Long-Lived ADS Income Taxes As Restated Net sales $ 1,017,041 $ — $ — $ — $ (1,455 ) $ 1,516 $ 1,017,102 Cost of goods sold 807,730 1,522 18,089 1,292 452 56 829,141 Gross profit 209,311 (1,522 ) (18,089 ) (1,292 ) (1,907 ) 1,460 187,961 Operating expenses: Selling 69,451 (548 ) (23 ) 99 266 2,560 71,805 General and administrative 67,712 (504 ) (14,925 ) 87 (1,728 ) (1,041 ) 49,601 Gain on disposal of assets or businesses (2,210 ) 240 — 1,019 — — (951 ) Intangible amortization 11,295 — — (1,267 ) — — 10,028 Income from operations 63,063 (710 ) (3,141 ) (1,230 ) (445 ) (59 ) 57,478 Other expense: Interest expense 16,095 2,431 — — — — 18,526 Other miscellaneous expense, net 283 — — — (124 ) (56 ) 103 Income before income taxes 46,685 (3,141 ) (3,141 ) (1,230 ) (321 ) (3 ) 38,849 Income tax expense 16,894 — — — — (959 ) 15,935 Equity in net income of unconsolidated affiliates (387 ) — — — — 121 (266 ) Net income 30,178 (3,141 ) (3,141 ) (1,230 ) (321 ) 835 23,180 Less net income attributable to noncontrolling interest 2,019 — — — (123 ) 624 2,520 Net income attributable to ADS 28,159 (3,141 ) (3,141 ) (1,230 ) (198 ) 211 20,660 Change in fair value of redeemable convertible preferred stock (5,869 ) — — — — — (5,869 ) Dividends to redeemable convertible preferred stockholders (736 ) — — — — 1 (735 ) Dividends paid to unvested restricted stockholders (52 ) — — — — — (52 ) Net income available to common stockholders and participating securities 21,502 (3,141 ) (3,141 ) (1,230 ) (198 ) 212 14,004 Undistributed income allocated to participating securities (2,042 ) 383 383 150 24 (25 ) (1,127 ) Net income available to common stockholders $ 19,460 $ (2,758 ) $ (2,758 ) $ (1,080 ) $ (174 ) $ 187 $ 12,877 Weighted average common shares outstanding: Basic 46,698 46,698 Diluted 47,249 47,249 Net income per share: Basic $ 0.42 $ 0.28 Diluted $ 0.41 $ 0.27 Cash dividends declared per share $ 0.10 $ 0.10 Impact on Consolidated Statements of Comprehensive Income The net effect of the restatement described above on the Company’s previously reported consolidated statements of comprehensive income for the years ended March 31, 2014 and 2013 is as follows: For the Year Ended March 31, 2014 Adjustments (Amounts in thousands) As Previously Leases Inventory Long-Lived ADS Income Taxes As Restated Net income $ 12,874 $ (2,423 ) $ (1,483 ) $ 306 $ 2,004 $ 942 $ 12,220 Comprehensive income 6,468 (2,423 ) (1,483 ) 296 1,959 412 5,229 Less other comprehensive loss attributable to noncontrolling interest, net of tax (1,285 ) — — — (1 ) 44 (1,242 ) Less net income attributable to noncontrolling interest 1,750 — — — 1,527 316 3,593 Total comprehensive income attributable to ADS $ 6,003 $ (2,423 ) $ (1,483 ) $ 296 $ 433 $ 52 $ 2,878 For the Year Ended March 31, 2013 Adjustments (Amounts in thousands) As Previously Leases Inventory Long-Lived ADS Income Taxes As Restated Net income $ 30,178 $ (3,141 ) $ (3,141 ) $ (1,230 ) $ (321 ) $ 835 $ 23,180 Comprehensive income 31,895 (3,141 ) (3,141 ) (1,232 ) (323 ) 1,725 25,783 Less other comprehensive income attributable to noncontrolling interest, net of tax 1,198 — — — (6 ) (33 ) 1,159 Less net income attributable to noncontrolling interest 2,019 — — — (123 ) 624 2,520 Total comprehensive income attributable to ADS $ 28,678 $ (3,141 ) $ (3,141 ) $ (1,232 ) $ (194 ) $ 1,134 $ 22,104 Impact on Consolidated Balance Sheet The net effect of the restatement described above on the Company’s previously reported consolidated balance sheet as of March 31, 2014 is as follows: March 31, 2014 Adjustments (Amounts in thousands) As Previously Leases Inventory Long-Lived ADS Income As Restated ASSETS Cash $ 3,931 $ — $ — $ — $ — $ — $ 3,931 Receivables, net 150,713 — — — (3,404 ) 962 148,271 Inventories 260,300 (86 ) (4,270 ) (130 ) 2,475 1,602 259,891 Deferred income taxes and other current assets 13,555 — — 343 — 567 14,465 Property, plant and equipment, net 292,082 62,903 — (4,663 ) — 29 350,351 Goodwill 86,297 — — 1,805 — (85 ) 88,017 Intangible assets, net 66,184 — — (6,991 ) — 1 59,194 Other assets 64,533 (15 ) — (5,759 ) — 6,688 65,447 Total assets $ 937,595 $ 62,802 $ (4,270 ) $ (15,395 ) $ (929 ) $ 9,764 $ 989,567 LIABILITIES, MEZZANINE EQUITY AND STOCKHOLDERS’ DEFICIT Current maturities of debt obligations $ 11,153 $ — $ — $ — $ — $ — $ 11,153 Current maturities of capital lease obligations — 12,364 — — — — 12,364 Accounts payable 108,111 — 704 88 — 2,069 110,972 Other accrued liabilities 37,956 530 — — — 4,599 43,085 Accrued income taxes 7,372 — — — — 608 7,980 Long-term debt obligation 442,895 — — — — — 442,895 Long-term capital lease obligation — 34,366 — — — — 34,366 Deferred tax liabilities 69,169 — — — — (2,836 ) 66,333 Other liabilities 15,324 82 — — — 16,764 32,170 Total liabilities 691,980 47,342 704 88 — 21,204 761,318 Mezzanine equity 642,951 — — — — — 642,951 Common stock 11,957 — — — — — 11,957 Paid-in capital 22,547 — — — — (10,109 ) 12,438 Common stock in treasury, at cost (448,439 ) — — — — — (448,439 ) Accumulated other comprehensive loss (5,977 ) — — (9 ) (541 ) (303 ) (6,830 ) Retained earnings (deficit) — 15,460 (4,974 ) (15,474 ) (108 ) 2,684 (2,412 ) Noncontrolling interest in subsidiaries 22,576 — — — (280 ) (3,712 ) 18,584 Total liabilities, mezzanine equity and stockholders’ deficit $ 937,595 $ 62,802 $ (4,270 ) $ (15,395 ) $ (929 ) $ 9,764 $ 989,567 The net effect of the restatement on the Company’s previously reported consolidated statements of cash flows for the years ended March 31, 2014 and 2013 is as follows: For the Year Ended March 31, 2014 (Amounts in thousands) As Previously Adjustments As Cash Flows from Operating Activities Net income $ 12,874 $ (654 ) $ 12,220 Depreciation and amortization 55,898 7,776 63,674 Changes in working capital (36,037 ) (1,383 ) (37,420 ) All other adjustments to reconcile net income to net cash provided by operating activities 29,387 4,549 33,936 Net cash provided by operating activities 62,122 10,288 72,410 Cash Flows from Investing Activities Net cash used in investing activities (41,767 ) 3,055 (38,712 ) Cash Flows from Financing Activities Payments on capital lease obligation — (12,240 ) (12,240 ) All other financing activities (17,712 ) (1,157 ) (18,869 ) Net cash used in financing activities (17,712 ) (13,397 ) (31,109 ) Effect of exchange rate changes on cash (73 ) 54 (19 ) Net change in cash 2,570 — 2,570 Cash at beginning of year 1,361 — 1,361 Cash at end of year $ 3,931 $ — $ 3,931 For the Year Ended March 31, 2013 (Amounts in thousands) As Previously Adjustments As Cash Flows from Operating Activities Net income $ 30,178 $ (6,998 ) $ 23,180 Depreciation and amortization 55,605 7,497 63,102 Changes in working capital (23,212 ) 9,895 (13,317 ) All other adjustments to reconcile net income to net cash provided by operating activities 5,644 (3,256 ) 2,388 Net cash provided by operating activities 68,215 7,138 75,353 Cash Flows from Investing Activities Net cash used in investing activities (47,199 ) 2,403 (44,796 ) Cash Flows from Financing Activities Payments on capital lease obligation — (9,342 ) (9,342 ) All other financing activities (21,737 ) (259 ) (21,996 ) Net used in financing activities (21,737 ) (9,601 ) (31,338 ) Effect of exchange rate changes on cash — 60 60 Net change in cash (721 ) — (721 ) Cash at beginning of year 2,082 — 2,082 Cash at end of year $ 1,361 $ — $ 1,361
Cumulative Effect of Prior Period Adjustments	The following table presents the impact of the restatement to the Company’s beginning retained earnings and other stockholders’ equity (deficit) balances, cumulatively to reflect adjustments booked to all periods prior to April 1, 2012: (Amounts in thousands) Common Paid in Common Accumulated Retained Total ADS Non-controlling subsidiaries Total Stockholders’ Equity Stockholders’ equity (deficit), March 31, 2012 (as previously reported) $ 11,957 $ 39,661 $ (449,583 ) $ (1,375 ) $ 110,863 $ (288,477 ) $ 20,628 $ (267,849 ) Adjustments from: Lease Accounting, before income tax effect — — — — 21,025 21,025 — 21,025 Inventory, before income tax effect — — — — (349 ) (349 ) — (349 ) Long-Lived Assets, before income tax effect — — — 3 (14,551 ) (14,548 ) — (14,548 ) ADS Mexicana, before income tax effect — — — (500 ) (388 ) (888 ) (387 ) (1,275 ) All other non-income tax adjustments — (1,006 ) — (653 ) 1,061 (598 ) (4,663 ) (5,261 ) Income tax adjustments — — — — (7,428 ) (7,428 ) — (7,428 ) Total adjustments — (1,006 ) — (1,150 ) (630 ) (2,786 ) (5,050 ) (7,836 ) Stockholders’ equity (deficit), March 31, 2012 (As Restated) $ 11,957 $ 38,655 $ (449,583 ) $ (2,525 ) $ 110,233 $ (291,263 ) $ 15,578 $ (275,685 )

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Mar. 31, 2015
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, 2013 or of future results. In addition, 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. Proforma (Amounts in thousands) 2015 2014 Net sales $ 1,217,431 $ 1,102,477 Net income attributable to ADS $ 10,329 $ 9,029
Ideal Pipe [Member]
Summary of Purchase Price Allocation	The purchase price allocation is as follows: (Amounts in thousands) Cash $ 7,443 Other current assets 9,036 Property, plant and equipment 27,258 Goodwill and intangible assets 18,890 Current liabilities (12,721 ) Non-current liabilities (6,078 ) Total purchase price $ 43,828

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Mar. 31, 2015
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant, Equipment	Property, plant and equipment, net as of the fiscal years ended March 31 consisted of the following: (Amounts in thousands) 2015 2014 Land, buildings and improvements $ 177,073 $ 158,588 Machinery and equipment 690,079 640,529 Construction in progress 5,991 11,003 Total cost 873,143 810,120 Less accumulated depreciation (496,076 ) (459,769 ) Property, plant and equipment, net $ 377,067 $ 350,351
Depreciation Expense Related to Property, Plant and Equipment	The following table sets forth depreciation expense related to Property, plant and equipment in each of the fiscal years ending March 31: (Amounts in thousands) 2015 2014 2013 Depreciation expense $ 50,136 $ 48,230 $ 47,524

Leases (Tables)

Leases (Tables)	12 Months Ended
	Mar. 31, 2015
Leases [Abstract]
Summary of Leased Assets Accounted for Capital Leases and Included in Property, Plant and Equipment	Leased assets accounted for as capital leases and included in Property, plant and equipment consisted of the following: 2015 2014 (Amounts in thousands) Buildings and improvements $ 7,163 $ 7,716 Machinery and equipment 168,437 145,980 Total cost 175,600 153,696 Less accumulated depreciation (102,263 ) (89,599 ) Leased assets in Property, plant and equipment, net $ 73,337 $ 64,097
Schedule of Interest and Depreciation Expense Related to Capital Leases	The following sets forth the interest and depreciation expense related to capital leases recorded in each fiscal year ended March 31: 2015 2014 2013 (Amounts in thousands) Lease interest expense $ 2,249 $ 2,666 $ 2,431 Depreciation of leased assets 13,943 12,644 11,252
Schedule of Future Minimum Lease Payments under Capital Leases and Present Value	The following is a schedule by year of future minimum lease payments under capital leases and the present value of the net minimum lease payments as of March 31, 2015: (Amounts in thousands) 2016 $ 18,373 2017 15,333 2018 12,093 2019 9,190 2020 6,600 Thereafter 7,206 Total minimum lease payments (a) $ 68,795 Less: amount representing interest (b) 7,561 Present value of net minimum lease payments $ 61,234 Lease obligation — Current 15,731 Lease obligation — Long-term 45,503 Total lease obligation $ 61,234 (a) Excludes contingent rentals which may be paid. Contingent rentals amounted to $844 and $335 for the years ended March 31, 2015 and 2014, respectively. (b) Amount necessary to reduce minimum lease payments to present value calculated at the lower of the rate implicit in the lease or the Company’s incremental borrowing rate at lease inception.
Summary of Future Minimum Rental Commitments under Operating Leases	Future minimum rental commitments under operating leases as of March 31, 2015, are summarized below (amounts in thousands): 2016 2017 2018 2019 2020 Thereafter Future operating lease payments $ 2,793 $ 1,857 $ 1,014 $ 614 $ 355 $ 2,222

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Mar. 31, 2015
Inventory Disclosure [Abstract]
Schedule of Inventories	Inventories as of the fiscal years ended March 31 consisted of the following: (Amounts in thousands) 2015 2014 Raw materials $ 50,198 $ 51,785 Finished goods 219,644 208,106 Total Inventories $ 269,842 $ 259,891

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	12 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Carrying Amount of Goodwill by Reportable Segment	The carrying amount of goodwill by reportable segment is as follows: (Amounts in thousands) Domestic International Total Balance at April 1, 2013 $ 87,507 $ 467 $ 87,974 Currency translation — 43 43 Balance at March 31, 2014 $ 87,507 $ 510 $ 88,017 Acquisition — 10,660 10,660 Currency translation — 2 2 Balance at March 31, 2015 $ 87,507 $ 11,172 $ 98,679
Summary of Intangible Assets	Intangible Assets Intangible assets as of the fiscal years ended March 31, 2015 and 2014 consisted of the following: 2015 2014 (Amounts in thousands) Gross Accumulated Net Gross Accumulated Net Definite-lived intangible assets Developed technology $ 40,579 $ (26,405 ) $ 14,174 $ 40,579 $ (22,588 ) $ 17,991 Customer relationships 43,167 (26,113 ) 17,054 38,252 (21,793 ) 16,459 Patents 6,547 (3,550 ) 2,997 6,175 (2,921 ) 3,254 Non-compete and other contractual agreements 1,365 (691 ) 674 1,088 (491 ) 597 Trademarks and tradenames 14,248 (3,051 ) 11,197 11,157 (2,254 ) 8,903 Total definite-lived intangible assets 105,906 (59,810 ) 46,096 97,251 (50,047 ) 47,204 Indefinite-lived intangible assets Trademarks 11,959 — 11,959 11,990 — 11,990 Total Intangible assets $ 117,865 $ (59,810 ) $ 58,055 $ 109,241 $ (50,047 ) $ 59,194
Weighted Average Amortization Period for Definite-Lived Intangible assets	The following table presents the weighted average amortization period for definite-lived intangible assets at March 31, 2015: Weighted Average Period (in years) Developed technology 10.7 Customer relationships 8.3 Patents 8.3 Non-compete and other contractual agreements 5.1 Trademarks and tradenames 13.9
Future Intangible Asset Amortization Expense	The following table presents the future intangible asset amortization expense based on existing intangible assets at March 31, 2015: Fiscal Year (Amounts in thousands) 2016 2017 2018 2019 2020 Thereafter Total Amortization expense $ 8,249 $ 7,273 $ 6,745 $ 6,585 $ 4,899 $ 12,345 $ 46,096

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	12 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Summary of Assets and Liabilities Carried at Fair Value	Recurring Fair Value Measurements The assets, liabilities and mezzanine equity carried at fair value as of the fiscal years ended March 31 were as follows: 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 March 31, 2014 (Amounts in thousands) Total Level 1 Level 2 Level 3 Assets: Derivative assets — propylene swaps $ 27 $ — $ 27 $ — Total assets at fair value on a recurring basis $ 27 $ — $ 27 $ — Liabilities & Mezzanine Equity: Derivative liability — interest rate swaps $ 1,001 $ — $ 1,001 $ — Contingent consideration for acquisitions 2,898 — — 2,898 Redeemable common stock 549,119 — — 549,119 Redeemable convertible preferred stock 291,720 — — 291,720 Deferred compensation — unearned ESOP shares (197,888 ) — — (197,888 ) Total liabilities & mezzanine equity at fair value on a recurring basis $ 646,850 $ — $ 1,001 $ 645,849
Summary of Quantitative Information about Level 3 Fair Value Measurements	Amounts recorded in the Consolidated Statements of Operations for Level 3 items amounted to $283 and $8,963 during 2015 and 2014, respectively. Quantitative Information about Level 3 Fair Value Measurements (Amounts in thousands) Liabilities & Mezzanine Equity Fair Value Valuation Unobservable Input Quantifiable Contingent consideration for acquisitions $ 2,444 Discounted cash flow Weighted Average Cost (a) 10 % Liabilities & Mezzanine Equity Fair Value Valuation Unobservable Input Quantifiable Contingent consideration for acquisitions $ 2,898 Discounted cash flow WACC (a) 11 % Redeemable common stock $ 549,119 Guideline company method and Discounted cash flow Implied pricing (b) 10.5x Guideline public (c) n/a WACC (a) 11 % Redeemable convertible preferred stock $ 291,720 Guideline company method and Discounted cash flow Implied pricing (b) 10.5x Guideline public (c) n/a WACC (a) 11 % Deferred compensation — unearned ESOP shares $ (197,888 ) Guideline company method and Discounted cash flow Implied pricing (b) 10.5x Guideline public (c) n/a WACC (a) 11 % (a) Represents discount rates or rates of return estimates and assumptions that we believe would be used by market participants when valuing these liabilities and mezzanine equity. (b) Represents financial metrics used to estimate the value of comparable companies including EBIT and EBITDA. (c) Represents a group of public companies deemed similar from a risk and return prospective and reflect economic conditions and business risk for the Company’s industry in general.
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 fiscal years ended March 31, 2015 and 2014 were as follows: (Amounts in thousands) Contingent Redeemable Redeemable Deferred Total Balance at March 31, 2013 $ 2,679 $ 522,276 $ 282,547 $ (196,477 ) $ 611,025 Allocation of ESOP shares to participants — — — 8,211 8,211 Change in fair value 738 26,458 13,601 (9,622 ) 31,175 Payments of contingent consideration liability (519 ) — — — (519 ) Redemption of Redeemable convertible preferred stock — — (4,428 ) — (4,428 ) Transfer to Level 3 — 385 — — 385 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 174 65,921 34,903 (23,849 ) 77,149 Payments of contingent consideration liability (628 ) — — — (628 ) Transfer out of Level 3 — (615,040 ) (326,623 ) 217,346 (724,317 ) Balance at March 31, 2015 $ 2,444 $ — $ — $ — $ 2,444

ADS Mexicana (Tables)

ADS Mexicana (Tables)	12 Months Ended
	Mar. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]
Assets and Liabilities of Ads Mexicana	The table below includes the assets and liabilities of ADS Mexicana that are consolidated as of March 31, 2015 and 2014. The balances exclude intercompany transactions that are eliminated upon consolidation. (Amounts in thousands) 2015 2014 Assets Current assets $ 24,822 $ 32,877 Property, plant and equipment, net 18,556 21,633 Other noncurrent assets 2,523 3,378 Total assets $ 45,901 $ 57,888 Liabilities Current liabilities $ 11,134 $ 11,595 Noncurrent liabilities 5,259 7,020 Total liabilities $ 16,393 $ 18,615

Investment in Unconsolidated 46

Investment in Unconsolidated Affiliates (Tables)	12 Months Ended
	Mar. 31, 2015
South American Joint Venture [Member]
Summarized Financial Data of Joint Ventures	Summarized financial data as of the fiscal years ended March 31 for the South American Joint Venture is as follows: (Amounts in thousands) 2015 2014 Investment in the South American Joint Venture $ 17,081 $ 18,422 Receivable from the South American Joint Venture 5,607 8,313
BaySaver [Member]
Summarized Financial Data of Joint Ventures	Summarized financial data as of the fiscal years ended March 31 for the BaySaver joint venture is as follows: (Amounts in thousands) 2015 2014 Investment in BaySaver $ 4,906 $ 5,202 Receivable from BaySaver 59 6
Tigre-ADS USA [Member]
Summarized Financial Data of Joint Ventures	Summarized financial data as of the fiscal year ended March 31 for the Tigre-ADS USA joint venture is as follows: (Amounts in thousands) 2015 Investment in Tigre-ADS USA $ 3,051 Receivable from Tigre-ADS USA 27

Debt (Tables)

Debt (Tables)	12 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Components of Debt	Long-term debt as of the fiscal years ended March 31 consisted of the following: (Amounts in thousands) 2015 2014 Bank Term Loans Revolving Credit Facility — ADS $ 205,100 $ 248,100 Revolving Credit Facility — ADS Mexicana — — Term Note 91,250 97,500 Senior Notes payable 100,000 100,000 Mortgage notes payable — 3,733 Industrial revenue bonds 3,545 4,715 Total 399,895 454,048 Current maturities (9,580 ) (11,153 ) Long-term debt obligation $ 390,315 $ 442,895
Maturities of Long-term Debt (Excluding Interest)	Maturities of long-term debt (excluding interest) as of March 31, 2015 are summarized below: Fiscal Years Ending March 31, (Amounts in thousands) 2016 2017 2018 2019 2020 Thereafter Total Principal maturities $ 9,580 $ 35,870 $ 35,905 $ 293,540 $ 25,000 $ — $ 399,895

Derivative Transactions (Tables

Derivative Transactions (Tables)	12 Months Ended
	Mar. 31, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Fair Values for Various Derivatives	A summary of the fair values for the various derivatives at March 31, 2015 and 2014 is presented below: 2015 2014 Asset Liability Asset Liability Interest rate swaps $ — $ (765 ) $ — $ (1,001 ) Foreign exchange forward contracts 28 — — — Diesel fuel option collars — (2,841 ) — — Propylene swaps — (5,142 ) 27 —
Schedule of Cash Settlements and Losses and (Gains) on Mark-to-Market Adjustments for Changes in Fair Value of Derivative Contracts	The Company recorded losses and (gains) on mark-to-market adjustments for changes in the fair value of derivative contracts as well as losses and (gains) on the settlement of derivative contracts as follows: Unrealized Mark to Market Losses (Gains) (Amounts in thousands) 2015 2014 2013 Interest rate swaps $ (236 ) $ (81 ) $ (221 ) Foreign exchange forward contracts (28 ) — — Diesel fuel option collars 2,841 55 217 Propylene swaps 5,169 (27 ) — $ 7,746 $ (53 ) $ (4 ) Realized Losses (Gains) (Amounts in thousands) 2015 2014 2013 Foreign exchange forward contracts $ 5,636 $ — $ — Diesel fuel option collars 736 — (57 ) Propylene swaps 1,333 (84 ) — $ 7,705 $ (84 ) $ (57 ) Total realized and unrealized losses (gains) included in Other miscellaneous expense (income), net (1) $ 15,451 $ (137 ) $ (61 ) (1) The total balance in Other miscellaneous expense (income), net in the Consolidated Statements of Operations also includes other (income) expense items of ($1,081), ($1,040) and $164 at March 31, 2015, 2014 and 2013, respectively.

Accumulated Other Comprehensi49

Accumulated Other Comprehensive Loss (Tables)	12 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Summary of Changes in Balances of Each Component of Accumulated Other Comprehensive Loss	The following table presents the changes in the balances of each component of Accumulated other comprehensive loss (“AOCL”) for the fiscal years ended March 31: (Amounts in thousands) Currency Translation Other Accumulated Other Comprehensive Loss Balance at April 1, 2012 $ (2,554 ) $ 29 $ (2,525 ) Other comprehensive income (loss) 1,469 (41 ) 1,428 Income tax expense — 16 16 Balance at March 31, 2013 $ (1,085 ) $ 4 $ (1,081 ) Other comprehensive (loss) income (5,753 ) 6 (5,747 ) Income tax benefit — (2 ) (2 ) Balance at March 31, 2014 $ (6,838 ) $ 8 $ (6,830 ) Other comprehensive loss (8,691 ) — (8,691 ) Balance at March 31, 2015 $ (15,529 ) $ 8 $ (15,521 )

Mezzanine Equity (Tables)

Mezzanine Equity (Tables)	12 Months Ended
	Mar. 31, 2015
Noncontrolling Interest [Abstract]
Schedule of Redeemable Preferred Stock	(Amounts in thousands) 2015 2014 Quarterly cash dividends $ 507 $ 526 Annual cash dividends 27 32 Special Dividend — 9,463 Total cash dividends $ 534 $ 10,021 Annual stock dividend 127 118 Annual cash dividend 27 32 Total ESOP required dividends $ 154 $ 150 Allocated shares 7,914 7,668 Required dividend per share 0.0195 0.0195 Required dividends $ 154 $ 150

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Mar. 31, 2015
Schedule of Estimate Fair Value of Stock Options Granted	We estimate the fair value of stock options granted after April 1, 2006 using a Black-Scholes option-pricing model, with assumptions as follows: 2015 2014 2013 Expected stock price volatility 40 % 44 % 48 % Risk-free interest rate 2.1 % 2.3 % 1.2 % Weighted-average expected option life (years) 8 8 8 Dividend yield 0.86 % 0.84 % 0.81 %
Summary of Unvested Restricted Stock Grants	The information about the unvested restricted stock grants as of March 31 is as follows: 2015 2014 2013 Number Weighted Number of Weighted Number of Weighted Unvested at beginning of year 311 $ 12.40 273 $ 11.63 179 $ 10.39 Granted — — 155 13.64 151 12.59 Vested (126 ) 12.01 (104 ) 11.78 (47 ) 10.29 Forfeited (2 ) 11.98 (13 ) 12.12 (10 ) 10.42 Unvested at end of year 183 $ 12.65 311 $ 12.40 273 $ 11.63
2000 Stock Option Plan [Member]
Schedule of Stock Option Activity	The stock option activity for the fiscal years ended March 31 is summarized as follows: 2015 2014 2013 Number Shares Weighted Weighted Number Shares Weighted Weighted Number of Shares Weighted Weighted Outstanding at beginning of year 913 $ 9.48 4.1 1,333 $ 8.10 4.0 1,524 $ 7.03 3.9 Issued 78 15.74 — 25 13.64 — 134 12.59 — Exercised (235 ) 7.50 — (427 ) 5.19 — (325 ) 4.89 — Forfeited (10 ) 10.48 — (18 ) 10.77 — — — — Outstanding at end of year 746 10.75 4.1 913 9.48 4.1 1,333 8.10 4.0 Vested at end of year 668 10.16 3.5 485 8.01 2.2 654 5.75 2.2 Unvested at end of year 78 15.74 9.4 428 11.14 6.3 679 10.37 5.7 Vested and expected to vest at end of year (a) 640 10.73 7.6 800 9.36 5.2 1,204 7.90 4.6 Fair value of options granted during the year $ 6.76 $ 6.38 $ 6.01 a) Vested and expected to vest at end of year assumes the forfeiture of approximately 15% of options outstanding at the end of each period.
Schedule of Unvested Stock Option Grants	The following table summarizes information about the unvested stock option grants as of the fiscal years ended March 31: 2015 2014 Number of Weighted Number of Weighted Unvested at beginning of year 428 $ 5.82 679 $ 5.73 Granted 78 6.76 25 6.38 Vested (428 ) 5.82 (276 ) 5.49 Unvested at end of year 78 $ 6.76 428 $ 5.82
2013 Stock Option Plan [Member]
Schedule of Stock Option Activity	The stock option transactions for the fiscal years ended March 31 are summarized as follows: 2015 2014 Number Shares Weighted Weighted Number Shares Weighted Weighted Outstanding at beginning of period 1,911 $ 13.64 9.42 — $ — — Issued — equity classified — — — 1,440 13.64 — Issued — liability classified — — — 518 13.64 — Forfeited — — — (47 ) 13.64 — Outstanding at end of year 1,911 13.64 8.42 1,911 13.64 9.42 Vested at end of year 408 13.64 8.42 — — — Unvested at end of year 1,503 13.64 8.42 1,911 13.64 9.42 Vested and expected to vest at end of year (a) 1,702 13.64 8.42 1,704 13.64 9.42 Fair value of options granted during the year $ — $ 6.22 (a) Vested and expected to vest at end period assumes the forfeiture of approximately 15% of options granted (except those to the CEO).
Schedule of Unvested Stock Option Grants	The following table summarizes information about the unvested stock option grants as of the fiscal years ended March 31: 2015 2014 Number of Weighted Number of Weighted Unvested at beginning of year 1,911 $ 6.22 — $ — Granted — — 1,958 6.22 Vested (408 ) 6.22 — — Forfeited — — (47 ) 6.22 Unvested at end of year 1,503 $ 6.22 1,911 $ 6.22
Non Employee Director Compensation Plan [Member]
Schedule of Unvested Stock Option Grants	The following table summarizes information about the unvested Non-Employee Director Compensation stock grants as of March 31, 2015: Number of Weighted Unvested at beginning of year — $ — Granted 48 18.88 Vested (48 ) 18.88 Unvested at end of year — $ —

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Before Income Taxes of Domestic and Foreign Operations	The components of Income before income taxes for the fiscal years ended March 31 are as follows: (Amounts in thousands) 2015 2014 2013 United States 17,312 25,497 25,116 Foreign 7,217 9,758 13,733 Total $ 24,529 $ 35,255 $ 38,849
Schedule of Provision for Income Taxes	The components of the provision for income taxes for the fiscal years ended March 31 consisted of the following: (Amounts in thousands) 2015 2014 2013 Current: Federal $ 20,462 $ 21,774 $ 17,282 State and local 3,659 3,859 3,664 Foreign 830 1,126 2,391 Total current tax provision 24,951 26,759 23,337 Deferred: Federal (13,437 ) (4,985 ) (5,344 ) State and local (2,173 ) (2,724 ) (1,653 ) Foreign 102 899 (405 ) Total deferred tax benefit (15,508 ) (6,810 ) (7,402 ) Total income tax provision $ 9,443 $ 19,949 $ 15,935
Effective Tax Rate Varied from Statutory Federal Income Tax Rate	For the fiscal years ended March 31, our effective tax rate varied from the statutory Federal income tax rate as a result of the following factors: 2015 2014 2013 Federal statutory rate 35.0 % 35.0 % 35.0 % Redeemable convertible preferred stock dividend (0.8 ) (9.9 ) 0.6 ESOP stock appreciation 16.5 7.3 6.1 ESOP compensation for Special Dividend on unallocated shares — 22.5 — Effect of tax rate of foreign subsidiaries 2.5 3.7 (5.1 ) State and local taxes—net of federal income tax benefit 1.1 2.4 3.1 Noncontrolling interest (1.9 ) (5.5 ) (3.3 ) Uncertain tax position change (7.1 ) 5.9 0.5 Qualified production activity credit (7.6 ) (5.0 ) (1.7 ) Cumulative adjustments to deferred taxes 0.2 0.5 5.1 Other 0.6 (0.3 ) 0.7 Effective rate 38.5 % 56.6 % 41.0 %
Schedule of Deferred Tax Assets and Liabilities	The tax effect of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities at March 31 were comprised of: (Amounts in thousands) 2015 2014 Deferred tax assets: State income taxes $ 1,885 $ 2,684 ESOP loan repayment 1,421 1,473 Receivable and other allowances 2,534 1,189 Fuel hedge 3,534 471 Inventory 7,564 1,173 Non-Qualified stock options 2,855 1,099 Accrued rebates 1,378 1,626 Worker’s compensation 667 754 Contingent consideration 247 252 Purchase card accrual 232 240 Other 1,041 620 Foreign NOL’s 1,504 1,119 Valuation allowance (1,504 ) (1,119 ) Total deferred tax assets 23,358 11,581 Deferred tax liabilities: Intangible assets 10,984 11,208 Property, plant and equipment 51,958 47,021 Leases 4,036 6,282 Deferred system costs 3,160 4,432 Goodwill 2,736 2,061 Other 1,487 716 Total deferred tax liabilities 74,361 71,720 Net deferred tax liability $ 51,003 $ 60,139 Net deferred tax assets are included in Deferred income taxes and other current assets and Other assets on the Consolidated Balance Sheets. The related balances at March 31 were as follows: (Amounts in thousands) 2015 2014 Net current deferred tax assets $ 14,085 $ 6,194 Net non-current deferred tax liabilities $ 65,088 $ 66,333
Reconciliation of Beginning and Ending Balance of Unrecognized Tax Benefits	A reconciliation of the beginning and ending amounts of unrecognized tax benefits for the years ended March 31, 2013, March 31, 2014 and 2015 is as follows: (Amounts in thousands) Balance as of March 31, 2012 $ 1,615 Increases in tax positions for prior years 10,969 Decreases in tax positions for prior years (8 ) Settlements — Lapse of statute of limitations (1,875 ) Balance as of March 31, 2013 10,701 Tax positions taken in current year 2,954 Decreases in tax positions for prior years (47 ) Increases in tax positions for prior years 844 Settlements — Lapse of statute of limitations (1,545 ) Balance as of March 31, 2014 12,907 Decreases in tax positions for prior years (680 ) Increases in tax positions for prior years 336 Settlements — Lapse of statute of limitations (2,067 ) Balance as of March 31, 2015 $ 10,496

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	12 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Summary of Net (Loss) Income Per Share	The following table presents information necessary to calculate net (loss) income per share for the fiscal years ended March 31, 2015, 2014 and 2013, 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: (Amounts in thousands, except per share data) 2015 2014 2013 NET (LOSS) INCOME PER SHARE — BASIC: Net income attributable to ADS $ 8,620 $ 8,627 $ 20,660 Adjustment for: Change in fair value of Redeemable convertible preferred stock (11,054 ) (3,979 ) (5,869 ) Dividends paid to Redeemable convertible preferred stockholders (661 ) (10,139 ) (735 ) Dividends paid to unvested restricted stockholders (11 ) (418 ) (52 ) Net (loss) income available to common stockholders and participating securities (3,106 ) (5,909 ) 14,004 Undistributed income allocated to participating securities — — (1,127 ) Net (loss) income available to common stockholders — Basic (3,106 ) (5,909 ) 12,877 Weighted average number of common shares outstanding — Basic 51,344 47,277 46,698 Net (loss) income per common share — Basic $ (0.06 ) $ (0.12 ) $ 0.28 NET (LOSS) INCOME PER SHARE — DILUTED: Net (loss) income available to common stockholders — Basic (3,106 ) (5,909 ) $ 12,877 Weighted average number of common shares outstanding — Basic 51,344 47,277 46,698 Assumed exercise of stock options — — 551 Weighted average number of common shares outstanding — Diluted 51,344 47,277 47,249 Net (loss) income per common share — Diluted $ (0.06 ) $ (0.12 ) $ 0.27 Potentially dilutive securities excluded as ant-dilutive 4,454 535 78

Business Segment Information (T

Business Segment Information (Tables)	12 Months Ended
	Mar. 31, 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 in each of the fiscal years ended March 31: (Amounts in thousands) 2015 2014 2013 Domestic Pipe $ 771,214 $ 700,270 $ 655,288 Allied Products 256,719 235,022 223,676 Total domestic 1,027,933 935,292 878,964 International Pipe 125,407 107,078 113,236 Allied Products 26,733 25,410 24,902 Total international 152,140 132,488 138,138 Total Net sales $ 1,180,073 $ 1,067,780 $ 1,017,102
Schedule of Additional Financial Information Attributable to Reportable Segments	The following sets forth certain additional financial information attributable to our reportable segments for the fiscal years ended March 31: (Amounts in thousands) 2015 2014 2013 Net Sales Domestic $ 1,027,933 $ 935,292 $ 878,964 International 152,140 132,488 138,138 Total $ 1,180,073 $ 1,067,780 $ 1,017,102 Gross Profit Domestic $ 180,664 $ 166,185 $ 157,820 International 25,449 27,785 30,141 Total $ 206,113 $ 193,970 $ 187,961 Segment Adjusted EBITDA Domestic $ 129,067 $ 133,996 $ 109,652 International 14,710 18,759 22,647 Total $ 143,777 $ 152,755 $ 132,299 Interest expense Domestic $ 19,308 $ 18,659 $ 18,390 International 60 148 136 Total $ 19,368 $ 18,807 $ 18,526 Depreciation and amortization Domestic $ 59,397 $ 57,834 $ 57,728 International 6,075 5,840 5,374 Total $ 65,472 $ 63,674 $ 63,102 Equity in net (loss) income of unconsolidated affiliates Domestic $ 289 $ 417 $ — International (2,624 ) (3,503 ) 266 Total $ (2,335 ) $ (3,086 ) $ 266 Capital expenditures Domestic $ 28,744 $ 35,783 $ 36,527 International 2,735 3,838 2,229 Total $ 31,479 $ 39,621 $ 38,756 The following sets forth certain additional financial information attributable to our reporting segments as of March 31: 2015 2014 2013 Investments in unconsolidated affiliates Domestic $ 7,957 $ 5,202 $ — International 17,081 18,422 21,899 Total $ 25,038 $ 23,624 $ 21,899 Total identifiable assets Domestic $ 942,267 $ 889,263 $ 838,489 International 168,624 113,612 114,243 Eliminations (69,193 ) (13,308 ) (1,967 ) Total $ 1,041,699 $ 989,567 $ 950,765
Schedule of Reconciliation of Segment EBITDA and Segment Adjusted EBITDA to Net Income	Reconciliation of Segment EBITDA and Segment Adjusted EBITDA to Net income 2015 2014 2013 (Amounts in thousands) Domestic International Domestic International Domestic International Net income $ 7,198 $ 5,553 $ 4,962 $ 7,258 $ 11,180 $ 12,000 Depreciation and amortization 59,397 6,075 57,834 5,840 57,728 5,374 Interest expense 19,308 60 18,659 148 18,390 136 Income tax expense 8,510 933 17,924 2,025 13,949 1,986 Segment EBITDA 94,413 12,621 99,379 15,271 101,247 19,496 Derivative fair value adjustments 7,774 (28 ) (53 ) — (4 ) — Foreign currency transaction losses (gains) 5,636 (232 ) — 845 — 1,085 Loss (gain) on sale of disposal or businesses 257 105 (2,817 ) (46 ) (880 ) (71 ) Unconsolidated affiliates interest, taxes, depreciation and amortization (a) 1,341 2,244 156 2,689 — 2,137 Special Dividend compensation — — 22,624 — — — Contingent consideration remeasurement 174 — 738 — (74 ) — Stock-based compensation 5,880 — 4,518 — 2,080 — ESOP deferred stock-based compensation 12,144 — 7,891 — 7,283 — Transaction costs (b) 1,448 — 1,560 — — — Segment Adjusted EBITDA $ 129,067 $ 14,710 $ 133,996 $ 18,759 $ 109,652 $ 22,647 (a) Includes our proportional share of interest, income taxes, depreciation and amortization related to our South American Joint Venture, our BaySaver Joint Venture and our Tigre-ADS USA Joint Venture, which are accounted for under the equity method of accounting. Fiscal year 2014 includes our proportional share of an asset impairment of $1,022 recorded by our South American Joint Venture. (b) Represents expenses recorded related to legal, accounting and other professional fees incurred in connection with our debt refinancing, completion of the IPO and secondary public offering and asset acquisitions and dispositions.
Net Sales and Long-Lived Asset by Geographic Location	Geographic Sales and Assets Information Net sales are attributed to the geographic location based on the location of the customer. The table below represents the Net sales and long-lived asset information by geographic location for each of the fiscal years ended March 31: (Amounts in thousands) 2015 2014 2013 Net Sales North America $ 1,161,909 $ 1,046,595 $ 996,935 Other 18,164 21,185 20,167 Total $ 1,180,073 $ 1,067,780 $ 1,017,102 (Amounts in thousands) 2015 2014 Long-Lived Assets* North America $ 387,132 $ 357,463 Other 17,081 18,422 Total $ 404,213 $ 375,885 * For segment reporting purposes, long-lived assets include Investments in unconsolidated affiliates, Central parts and Property, plant and equipment.

Supplemental Disclosures of C55

Supplemental Disclosures of Cash Flow Information (Tables)	12 Months Ended
	Mar. 31, 2015
Supplemental Cash Flow Elements [Abstract]
Increase (Decrease) in Cash Due to Changes Working Capital	The increase (decrease) in cash due to the changes in working capital accounts for the fiscal years ended March 31, were as follows: (Amounts in thousands) 2015 2014 2013 Changes in working capital: Receivables $ (10,351 ) $ (5,876 ) $ 24,755 Inventories (7,563 ) (39,017 ) (32,163 ) Prepaid expenses and other current assets 1,953 (3,298 ) 367 Accounts payable, accrued expenses, and other liabilities (995 ) 10,771 (6,276 ) Total $ (16,956 ) $ (37,420 ) $ (13,317 )
Supplemental Disclosures Cash Flow Information	Supplemental disclosures of cash flow information for the fiscal years ended March 31 were as follows: (Amounts in thousands) 2015 2014 2013 Supplemental disclosures of cash flow information — cash paid during years: Interest $ 18,709 $ 17,267 $ 18,392 Income taxes $ 28,503 $ 23,701 $ 23,924 (Amounts in thousands) 2015 2014 2013 Supplemental schedule of noncash investing and financing activities: Redeemable convertible preferred stock dividend $ 127 $ 118 $ 110 Redemption of common stock to exercise stock options 93 1,187 805 Receivable recorded to exercise stock options — 76 142 Purchases of plant, property, and equipment included in accounts payable 124 682 3,769 Receivable recorded for sale of businesses 600 1,241 1,800 ESOP distributions in common stock 6,133 — — Inventory contributed for Investment in unconsolidated affiliate — 1,285 — Assets acquired and obligation incurred under capital lease 24,047 24,902 16,715 Lease obligation retired upon disposition of leased assets 779 3,708 109 Reclassification of liability classified stock options upon initial public offering 1,522 — — Reclassification of deferred public offering cost asset upon initial public offering $ 456 $ — $ —

Quarterly Financial Informati56

Quarterly Financial Information (Unaudited) (Tables)	12 Months Ended
	Mar. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Summary of Quarterly Financial Information	The following tables set forth certain historical unaudited consolidated condensed quarterly financial information for each of the quarters during the years ended March 31, 2015 and March 31, 2014. Fiscal Year 2015 For the Three Months Ended March 31, 2015 December 31, 2014 September 30, 2014 June 30, 2014 (in thousands, except per (As Reported) (As Restated) (As Reported) (As Restated) (As Reported) (As Restated) Net sales $ 207,054 $ 278,176 $ 279,871 $ 364,724 $ 366,714 $ 328,297 $ 326,434 Gross profit 26,314 50,117 49,178 82,442 69,763 72,033 60,858 Net (loss) income (13,734 ) 499 (1,953 ) 22,768 18,997 14,669 9,441 Net (loss) income attributable to ADS (13,465 ) (367 ) (3,325 ) 22,390 16,844 14,241 8,566 Net (loss) income per share Basic $ (0.26 ) $ (0.01 ) $ (0.07 ) $ 0.51 $ 0.41 $ (0.09 ) $ (0.21 ) Diluted $ (0.26 ) $ (0.01 ) $ (0.07 ) $ 0.51 $ 0.41 $ (0.09 ) $ (0.21 ) Fiscal Year 2014 For the Three Months Ended March 31, 2014 December 31, 2013 September 30, 2013 June 30, 2013 (in thousands, except (As (As (As (As (As (As (As (As Net sales $ 181,232 $ 181,830 $ 261,435 $ 260,644 $ 333,240 $ 332,727 $ 293,102 $ 292,579 Gross profit 23,905 12,690 49,764 59,342 73,219 65,588 66,003 56,350 Net (loss) income (11,780 ) (16,168 ) (9,839 ) (2,818 ) 17,783 16,657 16,710 14,549 Net (loss) income attributable to ADS (12,170 ) (14,210 ) (10,324 ) (4,877 ) 17,322 14,740 16,296 12,974 Net (loss) income per share Basic $ (0.32 ) $ (0.41 ) $ (0.32 ) $ (0.21 ) $ 0.26 $ 0.21 $ 0.27 $ 0.21 Diluted $ (0.32 ) $ (0.41 ) $ (0.32 ) $ (0.21 ) $ 0.26 $ 0.21 $ 0.27 $ 0.21

Background and Summary of Sig57

Background and Summary of Significant Accounting Policies - Additional Information (Detail)	Mar. 31, 2015USD ($)$ / sharesshares	Dec. 15, 2014USD ($)$ / sharesshares	Dec. 09, 2014USD ($)$ / sharesshares	Aug. 22, 2014$ / sharesshares	Jul. 25, 2014USD ($)$ / sharesshares	Jul. 11, 2014	Mar. 31, 2015USD ($)SegmentCustomer$ / sharesshares	Mar. 31, 2014USD ($)$ / sharesshares		Mar. 31, 2013USD ($)
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments | Segment							2
Net proceeds from initial public offering							$ 79,131,000
Offering price per share | $ / shares	$ 0.01						$ 0.01	$ 0.01	[1]
Common stock, shares issued | shares	153,560,000						153,560,000	109,951,000	[1]
Interest capitalized							$ 518,000	$ 611,000		$ 1,036,000
Shipping costs							120,993,000	111,862,000		110,402,000
Advertising costs							2,477,000	2,335,000		2,731,000
Life, accidental death and dismemberment and medical coverage	$ 32,002,000						32,002,000	29,484,000		30,775,000
Self insurance plan employees contribution							4,067,000	4,032,000		806,000
Total claims expense, self insurance							$ 1,369,000	1,395,000		1,184,000
Minimum likelihood percentage of tax benefit to be realized upon settlement	50.00%						50.00%
Sales [Member]
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]
Shipping costs							$ 9,282,000	8,864,000		9,133,000
Other General Insurance Programs [Member]
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]
Total claims expense, self insurance							569,000	447,000		$ 934,000
Senior Notes Payable [Member]
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]
Senior notes	$ 100,000,000						100,000,000	100,000,000
Senior Notes Payable [Member] | Level 2 [Member]
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]
Senior notes	100,000,000						100,000,000	100,000,000
Senior notes, fair value	$ 103,590,000						$ 103,590,000	$ 104,511,000
Sales Revenue, Net [Member]
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]
Number of customers in the customer base | Customer							18,000
Concentration risk description							We have a large, active customer base of over 18,000 customers with one customer representing more than 10% of annual net sales.
Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage							10.70%	10.60%		9.70%
Accounts Receivable [Member] | Customer Concentration Risk [Member]
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	14.00%
Minimum [Member]
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]
Capitalized software development costs estimated useful lives							2 years
Central parts estimated useful lives							8 years
Claims per incident										$ 250,000
Minimum [Member] | Other General Insurance Programs [Member]
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]
Claims per occurrence							$ 250,000
Maximum [Member]
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]
Capitalized software development costs estimated useful lives							10 years
Central parts estimated useful lives							30 years
Maximum [Member] | Other General Insurance Programs [Member]
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]
Claims per occurrence							$ 500,000
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 | shares				600,000	5,289,000
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
Other offering expenses					$ 6,935,000
Indebtedness under the revolving portion of credit facility					$ 72,196,000
Secondary Public Offering [Member]
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]
Additional shares issued | shares			10,000,000
Offering price per share | $ / shares		$ 21.25	$ 21.25
Proceeds from sale of shares		$ 0	$ 0
Common stock, shares issued | shares		1,500,000
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Background and Summary of Sig58

Background and Summary of Significant Accounting Policies - Estimated Useful Lives of Related Assets (Detail)	12 Months Ended
	Mar. 31, 2015
Buildings [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	40 years
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	3 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	15 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	Shorter of useful life or life of lease

Background and Summary of Sig59

Background and Summary of Significant Accounting Policies - Other assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Investments in unconsolidated affiliates	$ 25,038	$ 23,624
Capitalized software development costs, net	7,276	10,511
Deposits	4,947	5,192
Deferred financing costs	4,543	5,953
Cash surrender value of officer life insurance	9,953	8,893
Central parts	2,108	1,910
Other	7,302	9,364
Total other assets	$ 61,167	$ 65,447	[1]
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Background and Summary of Sig60

Background and Summary of Significant Accounting Policies - Amortization Expense Related to Other Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Amortization [Abstract]
Capitalized software development costs	$ 3,550	$ 3,270	$ 3,539
Deferred financing costs	1,410	1,591	2,008
Central Parts	55	43	41
Other	$ 1,977	$ 1,986	$ 1,970

Restatement of Previously Iss61

Restatement of Previously Issued Financial Statements - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2015
Change in Accounting Estimate [Abstract]
Present value of minimum lease payment percentage	90.00%

Restatement of Previously Iss62

Restatement of Previously Issued Financial Statements - Schedule of Impact on Consolidated Statements of Operations (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended												12 Months Ended
		Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2015		Mar. 31, 2014		Mar. 31, 2013
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales		$ 207,054	$ 279,871	$ 366,714	$ 326,434	$ 181,830	$ 260,644	$ 332,727	$ 292,579					$ 1,180,073		$ 1,067,780	[1]	$ 1,017,102	[1]
Cost of goods sold														973,960		873,810	[1]	829,141	[1]
Gross profit		26,314	49,178	69,763	60,858	12,690	59,342	65,588	56,350					206,113		193,970	[1]	187,961	[1]
Operating expenses:
Selling														78,981		74,042	[1]	71,805	[1]
General and administrative														58,749		59,761	[1]	49,601	[1]
Loss (gain) on disposal of assets or businesses														362		(2,863)	[1]	(951)	[1]
Intangible amortization														9,754		10,145	[1]	10,028	[1]
Income from operations														58,267		52,885	[1]	57,478	[1]
Other expense:
Interest expense														19,368		18,807	[1]	18,526	[1]
Other miscellaneous expense (income), net														14,370		(1,177)	[1]	103	[1]
Income before income taxes														24,529		35,255	[1]	38,849	[1]
Income tax expense														9,443		19,949	[1]	15,935	[1]
Equity in net (income) loss of unconsolidated affiliates														2,335		3,086	[1]	(266)	[1]
Net income		(13,734)	(1,953)	18,997	9,441	(16,168)	(2,818)	16,657	14,549					12,751	[1]	12,220	[1]	23,180	[1]
Less net income attributable to noncontrolling interest	[1]													4,131		3,593		2,520
Net income attributable to ADS		$ (13,465)	$ (3,325)	$ 16,844	$ 8,566	$ (14,210)	$ (4,877)	$ 14,740	$ 12,974					8,620		8,627	[1]	20,660	[1]
Change in fair value of Redeemable convertible preferred stock														(11,054)		(3,979)	[1]	(5,869)	[1]
Dividends to Redeemable convertible preferred stockholders														(661)		(10,139)	[1]	(735)	[1]
Dividends paid to unvested restricted stockholders														(11)		(418)	[1]	(52)	[1]
Net income (loss) available to common stockholders and participating securities														(3,106)		(5,909)	[1]	14,004	[1]
Undistributed income allocated to participating securities	[1]																	(1,127)
Net income (loss) available to common stockholders														$ (3,106)		$ (5,909)	[1]	$ 12,877	[1]
Weighted average common shares outstanding:
Basic														51,344		47,277	[1]	46,698	[1]
Diluted														51,344		47,277	[1]	47,249	[1]
Net income (loss) per share:
Basic		$ (0.26)	$ (0.07)	$ 0.41	$ (0.21)	$ (0.41)	$ (0.21)	$ 0.21	$ 0.21					$ (0.06)		$ (0.12)	[1]	$ 0.28	[1]
Diluted		(0.26)	(0.07)	0.41	(0.21)	$ (0.41)	(0.21)	0.21	0.21					(0.06)		(0.12)	[1]	0.27	[1]
Cash dividends declared per share		$ 0.040	$ 0.040	$ 0	$ 0		$ 0.029	$ 0.029	$ 0.029	$ 0.026	$ 0.026	$ 0.026	$ 0.026	$ 0.08		$ 1.68	[1]	$ 0.10	[1]
As Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales			$ 278,176	$ 364,724	$ 328,297	$ 181,232	$ 261,435	$ 333,240	$ 293,102							$ 1,069,009		$ 1,017,041
Cost of goods sold																856,118		807,730
Gross profit			50,117	82,442	72,033	23,905	49,764	73,219	66,003							212,891		209,311
Operating expenses:
Selling																75,024		69,451
General and administrative																78,478		67,712
Loss (gain) on disposal of assets or businesses																(5,338)		(2,210)
Intangible amortization																11,412		11,295
Income from operations																53,315		63,063
Other expense:
Interest expense																16,141		16,095
Other miscellaneous expense (income), net																133		283
Income before income taxes																37,041		46,685
Income tax expense																22,575		16,894
Equity in net (income) loss of unconsolidated affiliates																1,592		(387)
Net income			499	22,768	14,669	(11,780)	(9,839)	17,783	16,710							12,874		30,178
Less net income attributable to noncontrolling interest																1,750		2,019
Net income attributable to ADS			$ (367)	$ 22,390	$ 14,241	$ (12,170)	$ (10,324)	$ 17,322	$ 16,296							11,124		28,159
Change in fair value of Redeemable convertible preferred stock																(3,979)		(5,869)
Dividends to Redeemable convertible preferred stockholders																(10,139)		(736)
Dividends paid to unvested restricted stockholders																(418)		(52)
Net income (loss) available to common stockholders and participating securities																(3,412)		21,502
Undistributed income allocated to participating securities																		(2,042)
Net income (loss) available to common stockholders																$ (3,412)		$ 19,460
Weighted average common shares outstanding:
Basic																47,277		46,698
Diluted																47,277		47,249
Net income (loss) per share:
Basic			$ (0.01)	$ 0.51	$ (0.09)	$ (0.32)	$ (0.32)	$ 0.26	$ 0.27							$ (0.07)		$ 0.42
Diluted			$ (0.01)	$ 0.51	$ (0.09)	$ (0.32)	$ (0.32)	$ 0.26	$ 0.27							(0.07)		0.41
Cash dividends declared per share																$ 1.68		$ 0.10
Adjustments [Member]
Other expense:
Net income																$ (654)		$ (6,998)
Adjustments [Member] | Leases [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of goods sold																(1,223)		1,522
Gross profit																1,223		(1,522)
Operating expenses:
Selling																(479)		(548)
General and administrative																(393)		(504)
Loss (gain) on disposal of assets or businesses																1,852		240
Income from operations																243		(710)
Other expense:
Interest expense																2,666		2,431
Income before income taxes																(2,423)		(3,141)
Net income																(2,423)		(3,141)
Net income attributable to ADS																(2,423)		(3,141)
Net income (loss) available to common stockholders and participating securities																(2,423)		(3,141)
Undistributed income allocated to participating securities																		383
Net income (loss) available to common stockholders																(2,423)		(2,758)
Adjustments [Member] | Inventory [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of goods sold																17,949		18,089
Gross profit																(17,949)		(18,089)
Operating expenses:
Selling																(344)		(23)
General and administrative																(16,122)		(14,925)
Income from operations																(1,483)		(3,141)
Other expense:
Income before income taxes																(1,483)		(3,141)
Net income																(1,483)		(3,141)
Net income attributable to ADS																(1,483)		(3,141)
Net income (loss) available to common stockholders and participating securities																(1,483)		(3,141)
Undistributed income allocated to participating securities																		383
Net income (loss) available to common stockholders																(1,483)		(2,758)
Adjustments [Member] | Long-Lived Assets [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of goods sold																(336)		1,292
Gross profit																336		(1,292)
Operating expenses:
Selling																415		99
General and administrative																284		87
Loss (gain) on disposal of assets or businesses																623		1,019
Intangible amortization																(1,267)		(1,267)
Income from operations																281		(1,230)
Other expense:
Other miscellaneous expense (income), net																(25)
Income before income taxes																306		(1,230)
Net income																306		(1,230)
Net income attributable to ADS																306		(1,230)
Net income (loss) available to common stockholders and participating securities																306		(1,230)
Undistributed income allocated to participating securities																		150
Net income (loss) available to common stockholders																306		(1,080)
Adjustments [Member] | ADS Mexicana [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales																(1,129)		(1,455)
Cost of goods sold																830		452
Gross profit																(1,959)		(1,907)
Operating expenses:
Selling																(943)		266
General and administrative																(1,820)		(1,728)
Income from operations																804		(445)
Other expense:
Other miscellaneous expense (income), net																(1,200)		(124)
Income before income taxes																2,004		(321)
Net income																2,004		(321)
Less net income attributable to noncontrolling interest																1,527		(123)
Net income attributable to ADS																477		(198)
Net income (loss) available to common stockholders and participating securities																477		(198)
Undistributed income allocated to participating securities																		24
Net income (loss) available to common stockholders																477		(174)
Adjustments [Member] | Income Taxes and Other [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net sales																(100)		1,516
Cost of goods sold																472		56
Gross profit																(572)		1,460
Operating expenses:
Selling																369		2,560
General and administrative																(666)		(1,041)
Income from operations																(275)		(59)
Other expense:
Other miscellaneous expense (income), net																(85)		(56)
Income before income taxes																(190)		(3)
Income tax expense																(2,626)		(959)
Equity in net (income) loss of unconsolidated affiliates																1,494		121
Net income																942		835
Less net income attributable to noncontrolling interest																316		624
Net income attributable to ADS																626		211
Dividends to Redeemable convertible preferred stockholders																		1
Net income (loss) available to common stockholders and participating securities																626		212
Undistributed income allocated to participating securities																		(25)
Net income (loss) available to common stockholders																$ 626		$ 187
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Restatement of Previously Iss63

Restatement of Previously Issued Financial Statements - Schedule of Impact on Consolidated Statements of Comprehensive Income (Detail) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2015		Mar. 31, 2014		Mar. 31, 2013
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income		$ (13,734)	$ (1,953)	$ 18,997	$ 9,441	$ (16,168)	$ (2,818)	$ 16,657	$ 14,549	$ 12,751	[1]	$ 12,220	[1]	$ 23,180	[1]
Comprehensive income	[1]									823		5,229		25,783
Less other comprehensive income (loss) attributable to noncontrolling interest, net of tax	[1]									(3,237)		(1,242)		1,159
Less net income attributable to noncontrolling interest	[1]									4,131		3,593		2,520
Total comprehensive income attributable to ADS	[1]									$ (71)		2,878		22,104
As Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income			$ 499	$ 22,768	$ 14,669	$ (11,780)	$ (9,839)	$ 17,783	$ 16,710			12,874		30,178
Comprehensive income												6,468		31,895
Less other comprehensive income (loss) attributable to noncontrolling interest, net of tax												(1,285)		1,198
Less net income attributable to noncontrolling interest												1,750		2,019
Total comprehensive income attributable to ADS												6,003		28,678
Adjustments [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income												(654)		(6,998)
Adjustments [Member] | Leases [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income												(2,423)		(3,141)
Comprehensive income												(2,423)		(3,141)
Total comprehensive income attributable to ADS												(2,423)		(3,141)
Adjustments [Member] | Inventory [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income												(1,483)		(3,141)
Comprehensive income												(1,483)		(3,141)
Total comprehensive income attributable to ADS												(1,483)		(3,141)
Adjustments [Member] | Long-Lived Assets [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income												306		(1,230)
Comprehensive income												296		(1,232)
Total comprehensive income attributable to ADS												296		(1,232)
Adjustments [Member] | ADS Mexicana [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income												2,004		(321)
Comprehensive income												1,959		(323)
Less other comprehensive income (loss) attributable to noncontrolling interest, net of tax												(1)		(6)
Less net income attributable to noncontrolling interest												1,527		(123)
Total comprehensive income attributable to ADS												433		(194)
Adjustments [Member] | Income Taxes and Other [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income												942		835
Comprehensive income												412		1,725
Less other comprehensive income (loss) attributable to noncontrolling interest, net of tax												44		(33)
Less net income attributable to noncontrolling interest												316		624
Total comprehensive income attributable to ADS												$ 52		$ 1,134
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Restatement of Previously Iss64

Restatement of Previously Issued Financial Statements - Schedule of Impact on Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands		Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2012
ASSETS
Cash		$ 3,623	$ 3,931	[1]	$ 1,361	[1]	$ 2,082	[1]
Receivables, net		154,294	148,271	[1]
Inventories		269,842	259,891	[1]
Deferred income taxes and other current assets		18,972	14,465	[1]
Property, plant and equipment, net		377,067	350,351	[1]
Goodwill		98,679	88,017	[1]	87,974
Intangible assets, net		58,055	59,194	[1]
Other assets		61,167	65,447	[1]
Total assets		1,041,699	989,567	[1]	950,765
LIABILITIES, MEZZANINE EQUITY AND STOCKHOLDERS' DEFICIT
Current maturities of debt obligations		9,580	11,153	[1]
Current maturities of capital lease obligations		15,731	12,364	[1]
Accounts payable		111,893	110,972	[1]
Other accrued liabilities		54,349	43,085	[1]
Accrued income taxes		6,041	7,980	[1]
Long-term debt obligation		390,315	442,895	[1]
Long-term capital lease obligation		45,503	34,366	[1]
Deferred tax liabilities		65,088	66,333	[1]
Other liabilities		28,602	32,170	[1]
Total liabilities		727,102	761,318	[1]
Mezzanine equity	[1]	108,021	642,951		608,346		557,563
Common stock		12,393	11,957	[1]
Paid-in capital		700,977	12,438	[1]
Common stock in treasury, at cost		(445,065)	(448,439)	[1]
Accumulated other comprehensive loss		(15,521)	(6,830)	[1]	(1,081)		(2,525)
Retained earnings (deficit)		(62,621)	(2,412)	[1]
Noncontrolling interest in subsidiaries		16,413	18,584	[1]
Total liabilities, mezzanine equity and stockholders' equity (deficit)		$ 1,041,699	989,567	[1]
As Previously Reported [Member]
ASSETS
Cash			3,931		$ 1,361		2,082
Receivables, net			150,713
Inventories			260,300
Deferred income taxes and other current assets			13,555
Property, plant and equipment, net			292,082
Goodwill			86,297
Intangible assets, net			66,184
Other assets			64,533
Total assets			937,595
LIABILITIES, MEZZANINE EQUITY AND STOCKHOLDERS' DEFICIT
Current maturities of debt obligations			11,153
Accounts payable			108,111
Other accrued liabilities			37,956
Accrued income taxes			7,372
Long-term debt obligation			442,895
Deferred tax liabilities			69,169
Other liabilities			15,324
Total liabilities			691,980
Mezzanine equity			642,951				$ 557,563
Common stock			11,957
Paid-in capital			22,547
Common stock in treasury, at cost			(448,439)
Accumulated other comprehensive loss			(5,977)
Noncontrolling interest in subsidiaries			22,576
Total liabilities, mezzanine equity and stockholders' equity (deficit)			937,595
Adjustments [Member] | Leases [Member]
ASSETS
Inventories			(86)
Property, plant and equipment, net			62,903
Other assets			(15)
Total assets			62,802
LIABILITIES, MEZZANINE EQUITY AND STOCKHOLDERS' DEFICIT
Current maturities of capital lease obligations			12,364
Other accrued liabilities			530
Long-term capital lease obligation			34,366
Other liabilities			82
Total liabilities			47,342
Retained earnings (deficit)			15,460
Total liabilities, mezzanine equity and stockholders' equity (deficit)			62,802
Adjustments [Member] | Inventory [Member]
ASSETS
Inventories			(4,270)
Total assets			(4,270)
LIABILITIES, MEZZANINE EQUITY AND STOCKHOLDERS' DEFICIT
Accounts payable			704
Total liabilities			704
Retained earnings (deficit)			(4,974)
Total liabilities, mezzanine equity and stockholders' equity (deficit)			(4,270)
Adjustments [Member] | Long-Lived Assets [Member]
ASSETS
Inventories			(130)
Deferred income taxes and other current assets			343
Property, plant and equipment, net			(4,663)
Goodwill			1,805
Intangible assets, net			(6,991)
Other assets			(5,759)
Total assets			(15,395)
LIABILITIES, MEZZANINE EQUITY AND STOCKHOLDERS' DEFICIT
Accounts payable			88
Total liabilities			88
Accumulated other comprehensive loss			(9)
Retained earnings (deficit)			(15,474)
Total liabilities, mezzanine equity and stockholders' equity (deficit)			(15,395)
Adjustments [Member] | ADS Mexicana [Member]
ASSETS
Receivables, net			(3,404)
Inventories			2,475
Total assets			(929)
LIABILITIES, MEZZANINE EQUITY AND STOCKHOLDERS' DEFICIT
Accumulated other comprehensive loss			(541)
Retained earnings (deficit)			(108)
Noncontrolling interest in subsidiaries			(280)
Total liabilities, mezzanine equity and stockholders' equity (deficit)			(929)
Adjustments [Member] | Income Taxes and Other [Member]
ASSETS
Receivables, net			962
Inventories			1,602
Deferred income taxes and other current assets			567
Property, plant and equipment, net			29
Goodwill			(85)
Intangible assets, net			1
Other assets			6,688
Total assets			9,764
LIABILITIES, MEZZANINE EQUITY AND STOCKHOLDERS' DEFICIT
Accounts payable			2,069
Other accrued liabilities			4,599
Accrued income taxes			608
Deferred tax liabilities			(2,836)
Other liabilities			16,764
Total liabilities			21,204
Paid-in capital			(10,109)
Accumulated other comprehensive loss			(303)
Retained earnings (deficit)			2,684
Noncontrolling interest in subsidiaries			(3,712)
Total liabilities, mezzanine equity and stockholders' equity (deficit)			$ 9,764
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Restatement of Previously Iss65

Restatement of Previously Issued Financial Statements - Cumulative Effect of Prior Period Adjustments (Detail) - USD ($) $ in Thousands	Mar. 31, 2012	Mar. 31, 2015	Mar. 31, 2014	[1]
Retained Earnings Adjustments [Line Items]
Stockholders' equity (deficit)	$ (275,685)	$ 206,576	$ (414,702)
Adjustments from:
Income tax adjustments	(7,428)
Total adjustments	(7,836)
Stockholders' equity (deficit)	(275,685)	$ 206,576	$ (414,702)
Common Stock [Member]
Retained Earnings Adjustments [Line Items]
Stockholders' equity (deficit)	11,957
Adjustments from:
Stockholders' equity (deficit)	11,957
Paid In Capital [Member]
Retained Earnings Adjustments [Line Items]
Stockholders' equity (deficit)	38,655
Adjustments from:
Total adjustments	(1,006)
Stockholders' equity (deficit)	38,655
Common Stock in Treasury [Member]
Retained Earnings Adjustments [Line Items]
Stockholders' equity (deficit)	(449,583)
Adjustments from:
Stockholders' equity (deficit)	(449,583)
Accumulated Other Comprehensive Loss [Member]
Retained Earnings Adjustments [Line Items]
Stockholders' equity (deficit)	(2,525)
Adjustments from:
Total adjustments	(1,150)
Stockholders' equity (deficit)	(2,525)
Retained Earnings (Deficit) [Member]
Retained Earnings Adjustments [Line Items]
Stockholders' equity (deficit)	110,233
Adjustments from:
Income tax adjustments	(7,428)
Total adjustments	(630)
Stockholders' equity (deficit)	110,233
Total ADS Stockholders' Equity (Deficit) [Member]
Retained Earnings Adjustments [Line Items]
Stockholders' equity (deficit)	(291,263)
Adjustments from:
Income tax adjustments	(7,428)
Total adjustments	(2,786)
Stockholders' equity (deficit)	(291,263)
Non-controlling Interest in Subsidiaries [Member]
Retained Earnings Adjustments [Line Items]
Stockholders' equity (deficit)	15,578
Adjustments from:
Total adjustments	(5,050)
Stockholders' equity (deficit)	15,578
Leases [Member]
Adjustments from:
Adjustments before income tax effect	21,025
Leases [Member] | Retained Earnings (Deficit) [Member]
Adjustments from:
Adjustments before income tax effect	21,025
Leases [Member] | Total ADS Stockholders' Equity (Deficit) [Member]
Adjustments from:
Adjustments before income tax effect	21,025
Inventory [Member]
Adjustments from:
Adjustments before income tax effect	(349)
Inventory [Member] | Retained Earnings (Deficit) [Member]
Adjustments from:
Adjustments before income tax effect	(349)
Inventory [Member] | Total ADS Stockholders' Equity (Deficit) [Member]
Adjustments from:
Adjustments before income tax effect	(349)
Long-Lived Assets [Member]
Adjustments from:
Adjustments before income tax effect	(14,548)
Long-Lived Assets [Member] | Accumulated Other Comprehensive Loss [Member]
Adjustments from:
Adjustments before income tax effect	3
Long-Lived Assets [Member] | Retained Earnings (Deficit) [Member]
Adjustments from:
Adjustments before income tax effect	(14,551)
Long-Lived Assets [Member] | Total ADS Stockholders' Equity (Deficit) [Member]
Adjustments from:
Adjustments before income tax effect	(14,548)
ADS Mexicana [Member]
Adjustments from:
Adjustments before income tax effect	(1,275)
ADS Mexicana [Member] | Accumulated Other Comprehensive Loss [Member]
Adjustments from:
Adjustments before income tax effect	(500)
ADS Mexicana [Member] | Retained Earnings (Deficit) [Member]
Adjustments from:
Adjustments before income tax effect	(388)
ADS Mexicana [Member] | Total ADS Stockholders' Equity (Deficit) [Member]
Adjustments from:
Adjustments before income tax effect	(888)
ADS Mexicana [Member] | Non-controlling Interest in Subsidiaries [Member]
Adjustments from:
Adjustments before income tax effect	(387)
All Other Non-Income Tax Adjustments [Member]
Adjustments from:
Adjustments before income tax effect	(5,261)
All Other Non-Income Tax Adjustments [Member] | Paid In Capital [Member]
Adjustments from:
Adjustments before income tax effect	(1,006)
All Other Non-Income Tax Adjustments [Member] | Accumulated Other Comprehensive Loss [Member]
Adjustments from:
Adjustments before income tax effect	(653)
All Other Non-Income Tax Adjustments [Member] | Retained Earnings (Deficit) [Member]
Adjustments from:
Adjustments before income tax effect	1,061
All Other Non-Income Tax Adjustments [Member] | Total ADS Stockholders' Equity (Deficit) [Member]
Adjustments from:
Adjustments before income tax effect	(598)
All Other Non-Income Tax Adjustments [Member] | Non-controlling Interest in Subsidiaries [Member]
Adjustments from:
Adjustments before income tax effect	(4,663)
As Previously Reported [Member]
Retained Earnings Adjustments [Line Items]
Stockholders' equity (deficit)	(267,849)
Adjustments from:
Stockholders' equity (deficit)	(267,849)
As Previously Reported [Member] | Common Stock [Member]
Retained Earnings Adjustments [Line Items]
Stockholders' equity (deficit)	11,957
Adjustments from:
Stockholders' equity (deficit)	11,957
As Previously Reported [Member] | Paid In Capital [Member]
Retained Earnings Adjustments [Line Items]
Stockholders' equity (deficit)	39,661
Adjustments from:
Stockholders' equity (deficit)	39,661
As Previously Reported [Member] | Common Stock in Treasury [Member]
Retained Earnings Adjustments [Line Items]
Stockholders' equity (deficit)	(449,583)
Adjustments from:
Stockholders' equity (deficit)	(449,583)
As Previously Reported [Member] | Accumulated Other Comprehensive Loss [Member]
Retained Earnings Adjustments [Line Items]
Stockholders' equity (deficit)	(1,375)
Adjustments from:
Stockholders' equity (deficit)	(1,375)
As Previously Reported [Member] | Retained Earnings (Deficit) [Member]
Retained Earnings Adjustments [Line Items]
Stockholders' equity (deficit)	110,863
Adjustments from:
Stockholders' equity (deficit)	110,863
As Previously Reported [Member] | Total ADS Stockholders' Equity (Deficit) [Member]
Retained Earnings Adjustments [Line Items]
Stockholders' equity (deficit)	(288,477)
Adjustments from:
Stockholders' equity (deficit)	(288,477)
As Previously Reported [Member] | Non-controlling Interest in Subsidiaries [Member]
Retained Earnings Adjustments [Line Items]
Stockholders' equity (deficit)	20,628
Adjustments from:
Stockholders' equity (deficit)	$ 20,628
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Restatement of Previously Iss66

Restatement of Previously Issued Financial Statements - Schedule of Impact on Consolidated Statements of Cash Flows (Detail) - USD ($) $ in Thousands		3 Months Ended									12 Months Ended
		Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014		Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2015		Mar. 31, 2014		Mar. 31, 2013
Cash Flows from Operating Activities
Net income		$ (13,734)	$ (1,953)	$ 18,997	$ 9,441	$ (16,168)		$ (2,818)	$ 16,657	$ 14,549	$ 12,751	[1]	$ 12,220	[1]	$ 23,180	[1]
Depreciation and amortization											65,472		63,674	[1]	63,102	[1]
Changes in working capital											(16,956)		(37,420)	[1]	(13,317)	[1]
All other adjustments to reconcile net income to net cash provided by operating activities													33,936		2,388
Net cash provided by operating activities											74,379		72,410	[1]	75,353	[1]
Cash Flows from Investing Activities
Net cash used in investing activities											(76,093)		(38,712)	[1]	(44,796)	[1]
Cash Flows from Financing Activities
Payments on capital lease obligation											(9,278)		(12,240)	[1]	(9,342)	[1]
All other financing activities													(18,869)		(21,996)
Net cash provided by (used in) financing activities											1,791		(31,109)	[1]	(31,338)	[1]
Effect of exchange rate changes on cash											(385)		(19)	[1]	60	[1]
Net change in cash											(308)		2,570	[1]	(721)	[1]
Cash at beginning of year	[1]				3,931					1,361	3,931		1,361		2,082
Cash at end of year		$ 3,623				3,931	[1]				3,623		3,931	[1]	1,361	[1]
As Previously Reported [Member]
Cash Flows from Operating Activities
Net income			$ 499	$ 22,768	14,669	(11,780)		$ (9,839)	$ 17,783	16,710			12,874		30,178
Depreciation and amortization													55,898		55,605
Changes in working capital													(36,037)		(23,212)
All other adjustments to reconcile net income to net cash provided by operating activities													29,387		5,644
Net cash provided by operating activities													62,122		68,215
Cash Flows from Investing Activities
Net cash used in investing activities													(41,767)		(47,199)
Cash Flows from Financing Activities
All other financing activities													(17,712)		(21,737)
Net cash provided by (used in) financing activities													(17,712)		(21,737)
Effect of exchange rate changes on cash													(73)
Net change in cash													2,570		(721)
Cash at beginning of year					$ 3,931					$ 1,361	$ 3,931		1,361		2,082
Cash at end of year						$ 3,931							3,931		1,361
Adjustments [Member]
Cash Flows from Operating Activities
Net income													(654)		(6,998)
Depreciation and amortization													7,776		7,497
Changes in working capital													(1,383)		9,895
All other adjustments to reconcile net income to net cash provided by operating activities													4,549		(3,256)
Net cash provided by operating activities													10,288		7,138
Cash Flows from Investing Activities
Net cash used in investing activities													3,055		2,403
Cash Flows from Financing Activities
Payments on capital lease obligation													(12,240)		(9,342)
All other financing activities													(1,157)		(259)
Net cash provided by (used in) financing activities													(13,397)		(9,601)
Effect of exchange rate changes on cash													$ 54		$ 60
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Disposal of Assets or Busines67

Disposal of Assets or Businesses - Additional Information (Detail) - USD ($)	Jun. 28, 2013	Dec. 31, 2012	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from sale					$ 538,000	$ 9,302,000	[1]	$ 1,044,000	[1]
Net loss on disposition of the equipment					1,112,000	2,475,000		$ 1,259,000
NDS Agreement [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from sale	$ 5,877,000
Net book value of assets or businesses	1,029,000
Gain on sale	$ 4,848,000
Miscellaneous [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from sale			$ 150,000	$ 3,030,000
Other consideration in the form of a note receivable			600,000	1,241,000
Net book value of assets or businesses			0	3,781,000	0	$ 3,781,000
Gain on sale			750,000	$ 490,000
Sales price			$ 750,000		$ 750,000
Basalite Agreement [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from sale		$ 600,000
Other consideration in the form of a note receivable		1,800,000
Net book value of assets or businesses		190,000
Gain on sale		$ 2,210,000
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) $ in Thousands	Jan. 30, 2015USD ($)	Mar. 31, 2015USD ($)	Mar. 31, 2014USD ($)		Mar. 31, 2013USD ($)Business		Jul. 17, 2015USD ($)	Jul. 15, 2013
Business Acquisition [Line Items]
Number of businesses acquired | Business					2
Business acquisition, purchase price					$ 5,239
Contingent consideration, estimated fair value					1,271
Goodwill		$ 98,679	$ 88,017	[1]	87,974
Transaction costs related to the purchase of Ideal Pipe		5,636
Intangible assets		105,906	97,251
Depreciation and amortization		(65,472)	(63,674)	[1]	(63,102)	[1]
Notes Payable [Member]
Business Acquisition [Line Items]
Note payable					$ 400
Pro Forma [Member]
Business Acquisition [Line Items]
Intangible asset amortization expense, net of related income taxes		749	951
Depreciation and amortization		(7)
Depreciation and amortization			354
Interest expense, net of related income taxes		$ 513	521
BaySaver [Member]
Business Acquisition [Line Items]
Percentage of ownership in joint ventures		55.00%						55.00%
Subsequent Event [Member] | BaySaver [Member]
Business Acquisition [Line Items]
Additionally acquired percentage of ownership in joint ventures							10.00%
Purchase price							$ 3,200
Percentage of ownership in joint ventures							65.00%
Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets		$ 43,167	$ 38,252
Ideal Pipe [Member]
Business Acquisition [Line Items]
Business acquisition, purchase price	$ 43,828
Goodwill	10,660
Purchase price	43,828
Ideal Pipe [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets	$ 4,881
Intangible assets, useful life	7 years
Ideal Pipe [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Intangible assets	$ 3,073
Intangible assets, useful life	10 years
Ideal Pipe [Member] | Noncompete Agreements [Member]
Business Acquisition [Line Items]
Intangible assets	$ 276
Intangible assets, useful life	3 years
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Acquisitions - Summary of Purch

Acquisitions - Summary of Purchase Price Allocation (Detail) - Ideal Pipe [Member] $ in Thousands	Jan. 30, 2015USD ($)
Business Acquisition [Line Items]
Cash	$ 7,443
Other current assets	9,036
Property, plant and equipment	27,258
Goodwill and intangible assets	18,890
Current liabilities	(12,721)
Non-current liabilities	(6,078)
Total purchase price	$ 43,828

Acquisitions - Effect of Acquis

Acquisitions - Effect of Acquisitions for Unaudited Pro Forma Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Business Acquisition, Pro Forma Information [Abstract]
Net sales	$ 1,217,431	$ 1,102,477
Net income attributable to ADS	$ 10,329	$ 9,029

Property, Plant, and Equipment

Property, Plant, and Equipment - Schedule of Property, Plant, Equipment and Depreciation Expense on Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Property, Plant and Equipment [Line Items]
Construction in progress	$ 5,991	$ 11,003
Property, plant and equipment, gross	873,143	810,120
Less accumulated depreciation	(496,076)	(459,769)
Property, plant and equipment, net	377,067	350,351	[1]
Land, Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	177,073	158,588
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 690,079	$ 640,529
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Property, Plant, and Equipmen72

Property, Plant, and Equipment - Depreciation Expense Related to Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 50,136	$ 48,230	$ 47,524

Leases - Summary of Leased Asse

Leases - Summary of Leased Assets Accounted for Capital Leases and Included in Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Capital Leased Assets [Line Items]
Total cost	$ 175,600	$ 153,696
Less accumulated amortization	(102,263)	(89,599)
Leased assets in Property, plant and equipment, net	73,337	64,097
Buildings and Improvements [Member]
Capital Leased Assets [Line Items]
Total cost	7,163	7,716
Machinery and Equipment [Member]
Capital Leased Assets [Line Items]
Total cost	$ 168,437	$ 145,980

Leases - Schedule of Interest a

Leases - Schedule of Interest and Depreciation Expense Related to Capital Leases (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Leases [Abstract]
Lease interest expense	$ 2,249	$ 2,666	$ 2,431
Depreciation of leased assets	$ 13,943	$ 12,644	$ 11,252

Leases - Schedule of Future Min

Leases - Schedule of Future Minimum Lease Payments under Capital Leases and Present Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014	[1]
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments, Fiscal Year Maturity [Abstract]
2,016	$ 18,373
2,017	15,333
2,018	12,093
2,019	9,190
2,020	6,600
Thereafter	7,206
Total minimum lease payments	68,795
Less: amount representing interest	7,561
Present value of net minimum lease payments	61,234
Lease obligation - Current	15,731	$ 12,364
Lease obligation - Long-term	45,503	$ 34,366
Total lease obligation	$ 61,234
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Leases - Schedule of Future M76

Leases - Schedule of Future Minimum Lease Payments under Capital Leases and Present Value (Parenthetical) (Detail) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Capital Leases, Future Minimum Payments, Present Value of Net Minimum Payments, Fiscal Year Maturity [Abstract]
Contingent rentals amount	$ 844	$ 335

Leases - Summary of Future Mini

Leases - Summary of Future Minimum Rental Commitments under Operating Leases (Detail) $ in Thousands	Mar. 31, 2015USD ($)
Leases, Operating [Abstract]
Future operating lease payments,2016	$ 2,793
Future operating lease payments, 2017	1,857
Future operating lease payments, 2018	1,014
Future operating lease payments, 2019	614
Future operating lease payments, 2020	355
Future operating lease payments, thereafter	$ 2,222

Leases - Additional Information

Leases - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Leases [Abstract]
Total rent expense	$ 3,953	$ 3,836	$ 4,968

Inventories - Schedule of Inven

Inventories - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Inventory Disclosure [Abstract]
Raw materials	$ 50,198	$ 51,785
Finished goods	219,644	208,106
Total Inventories	$ 269,842	$ 259,891	[1]
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Inventories - Additional Inform

Inventories - Additional Information (Detail) - USD ($)	Mar. 31, 2015	Mar. 31, 2014
Inventory Disclosure [Abstract]
Work-in-process inventories	$ 0	$ 0
General and administrative cost in inventory	17,257,000	15,617,000
General and administrative cost remained in inventory	$ 4,400,000	$ 3,819,000

Goodwill and Intangible Asset81

Goodwill and Intangible Assets - Carrying Amount of Goodwill by Reportable Segment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Goodwill [Line Items]
Beginning balance	$ 88,017	[1]	$ 87,974
Acquisition	10,660
Currency translation	2		43
Ending balance	98,679		88,017	[1]
Domestic [Member]
Goodwill [Line Items]
Beginning balance	87,507		87,507
Acquisition	0
Currency translation	0		0
Ending balance	87,507		87,507
International Segment [Member]
Goodwill [Line Items]
Beginning balance	510		467
Acquisition	10,660
Currency translation	2		43
Ending balance	$ 11,172		$ 510
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Goodwill and Intangible Asset82

Goodwill and Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible	$ 105,906	$ 97,251
Intangible Assets, Gross	117,865
Indefinite-Lived Intangible Assets		109,241
Accumulated Amortization	(59,810)	(50,047)
Net Intangible	46,096	47,204
Intangible assets, net	58,055	59,194	[1]
Trademarks [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets	11,959	11,990
Developed Technology [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible	40,579	40,579
Accumulated Amortization	(26,405)	(22,588)
Net Intangible	14,174	17,991
Customer Relationships [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible	43,167	38,252
Accumulated Amortization	(26,113)	(21,793)
Net Intangible	17,054	16,459
Patents [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible	6,547	6,175
Accumulated Amortization	(3,550)	(2,921)
Net Intangible	2,997	3,254
Non-compete and Other Contractual Agreements [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible	1,365	1,088
Accumulated Amortization	(691)	(491)
Net Intangible	674	597
Trademarks and Tradenames [Member]
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross Intangible	14,248	11,157
Accumulated Amortization	(3,051)	(2,254)
Net Intangible	$ 11,197	$ 8,903
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Goodwill and Intangible Asset83

Goodwill and Intangible Assets - Weighted Average Amortization Period for Definite-Lived Intangible Assets (Detail)	12 Months Ended
	Mar. 31, 2015
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period	10 years 8 months 12 days
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period	8 years 3 months 18 days
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period	8 years 3 months 18 days
Non-compete and Other Contractual Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period	5 years 1 month 6 days
Trademarks and Tradenames [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period	13 years 10 months 24 days

Goodwill and Intangible Asset84

Goodwill and Intangible Assets - Future Intangible Asset Amortization Expense (Detail) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization expense, 2016	$ 8,249
Amortization expense, 2017	7,273
Amortization expense, 2018	6,745
Amortization expense, 2019	6,585
Amortization expense, 2020	4,899
Amortization expense,Thereafter	12,345
Amortization expense,Total	$ 46,096	$ 47,204

Fair Value Measurement - Summar

Fair Value Measurement - Summary of Assets and Liabilities Carried at Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total liabilities & mezzanine equity at fair value on a recurring basis	$ 2,444	$ 645,849	$ 611,025
Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	765	1,001
Foreign Exchange Forward Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	28
Propylene Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		27
Derivative liability	5,142
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	27
Contingent consideration for acquisitions	2,444	2,898
Redeemable common stock		549,119
Redeemable convertible preferred stock		291,720
Deferred compensation - unearned ESOP shares		(197,888)
Total liabilities & mezzanine equity at fair value on a recurring basis	11,192	646,850
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	27
Total liabilities & mezzanine equity at fair value on a recurring basis	8,748	1,001
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	2,444	2,898
Redeemable common stock		549,119
Redeemable convertible preferred stock		291,720
Deferred compensation - unearned ESOP shares		(197,888)
Total liabilities & mezzanine equity at fair value on a recurring basis	2,444	645,849
Fair Value, Measurements, Recurring [Member] | Diesel Fuel Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	2,841
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	2,841
Fair Value, Measurements, Recurring [Member] | Interest Rate Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	765	1,001
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	765	1,001
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	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	28
Fair Value, Measurements, Recurring [Member] | Propylene Swaps [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		27
Derivative liability	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 assets		$ 27
Derivative liability	$ 5,142

Fair Value Measurement - Summ86

Fair Value Measurement - Summary of Quantitative Information about Level 3 Fair Value Measurements (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Level 3 [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Liabilities & Mezzanine Equity	$ 2,444	$ 645,849	$ 611,025
Redeemable Convertible Preferred Stock [Member] | Level 3 [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Liabilities & Mezzanine Equity		291,720	$ 282,547
Fair Value, Measurements, Recurring [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Liabilities & Mezzanine Equity	11,192	646,850
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Liabilities & Mezzanine Equity	$ 2,444	645,849
Fair Value, Measurements, Recurring [Member] | Redeemable Convertible Preferred Stock [Member] | Level 3 [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Liabilities & Mezzanine Equity		$ 291,720
Fair Value, Measurements, Recurring [Member] | Redeemable Convertible Preferred Stock [Member] | Level 3 [Member] | Guideline Company Method and Discounted Cash Flow [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Valuation Technique(s)	Guideline company method and Discounted cash flow
Fair Value, Measurements, Recurring [Member] | Redeemable Convertible Preferred Stock [Member] | Level 3 [Member] | Guideline Company Method and Discounted Cash Flow [Member] | Weighted Average Cost Of Capital [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Unobservable Input	WACC (a)
Quantifiable Input		11.00%
Fair Value, Measurements, Recurring [Member] | Redeemable Convertible Preferred Stock [Member] | Level 3 [Member] | Guideline Company Method and Discounted Cash Flow [Member] | Implied Pricing Multiples [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Unobservable Input	Implied pricing multiples (b)
Quantifiable Input		10.50%
Fair Value, Measurements, Recurring [Member] | Redeemable Convertible Preferred Stock [Member] | Level 3 [Member] | Guideline Company Method and Discounted Cash Flow [Member] | Guideline Public Company Group [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Unobservable Input	Guideline public company group (c)
Fair Value, Measurements, Recurring [Member] | Contingent Consideration for Acquisitions [Member] | Level 3 [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Liabilities & Mezzanine Equity	$ 2,444	$ 2,898
Fair Value, Measurements, Recurring [Member] | Contingent Consideration for Acquisitions [Member] | Level 3 [Member] | Discounted Cash Flow [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Valuation Technique(s)	Discounted cash flow
Fair Value, Measurements, Recurring [Member] | Contingent Consideration for Acquisitions [Member] | Level 3 [Member] | Discounted Cash Flow [Member] | Weighted Average Cost Of Capital [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Unobservable Input	Weighted Average Cost of Capital ("WACC")(a)
Quantifiable Input	10.00%	11.00%
Fair Value, Measurements, Recurring [Member] | Redeemable Common Stock [Member] | Level 3 [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Liabilities & Mezzanine Equity		$ 549,119
Fair Value, Measurements, Recurring [Member] | Redeemable Common Stock [Member] | Level 3 [Member] | Guideline Company Method and Discounted Cash Flow [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Valuation Technique(s)	Guideline company method and Discounted cash flow
Fair Value, Measurements, Recurring [Member] | Redeemable Common Stock [Member] | Level 3 [Member] | Guideline Company Method and Discounted Cash Flow [Member] | Weighted Average Cost Of Capital [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Unobservable Input	WACC(a)
Quantifiable Input		11.00%
Fair Value, Measurements, Recurring [Member] | Redeemable Common Stock [Member] | Level 3 [Member] | Guideline Company Method and Discounted Cash Flow [Member] | Implied Pricing Multiples [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Unobservable Input	Implied pricing multiples (b)
Quantifiable Input		10.50%
Fair Value, Measurements, Recurring [Member] | Redeemable Common Stock [Member] | Level 3 [Member] | Guideline Company Method and Discounted Cash Flow [Member] | Guideline Public Company Group [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Unobservable Input	Guideline public company group (c)
Fair Value, Measurements, Recurring [Member] | Deferred Compensation, Unearned ESOP Shares [Member] | Level 3 [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Liabilities & Mezzanine Equity		$ 197,888
Fair Value, Measurements, Recurring [Member] | Deferred Compensation, Unearned ESOP Shares [Member] | Level 3 [Member] | Guideline Company Method and Discounted Cash Flow [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Valuation Technique(s)	Guideline company method and Discounted cash flow
Fair Value, Measurements, Recurring [Member] | Deferred Compensation, Unearned ESOP Shares [Member] | Level 3 [Member] | Guideline Company Method and Discounted Cash Flow [Member] | Weighted Average Cost Of Capital [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Unobservable Input	WACC (a)
Quantifiable Input		11.00%
Fair Value, Measurements, Recurring [Member] | Deferred Compensation, Unearned ESOP Shares [Member] | Level 3 [Member] | Guideline Company Method and Discounted Cash Flow [Member] | Implied Pricing Multiples [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Unobservable Input	Implied pricing multiples (b)
Quantifiable Input		10.50%
Fair Value, Measurements, Recurring [Member] | Deferred Compensation, Unearned ESOP Shares [Member] | Level 3 [Member] | Guideline Company Method and Discounted Cash Flow [Member] | Guideline Public Company Group [Member]
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Unobservable Input	Guideline public company group (c)

Fair Value Measurement - Additi

Fair Value Measurement - Additional Information (Detail) - USD ($)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets and liabilities, additional transfers	$ 0	$ 0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value asset liability measured on recurring basis gain loss included in earnings	$ 283,000	$ 8,963,000

Fair Value Measurement - Summ88

Fair Value Measurement - Summary of Changes in Fair Value of Recurring Fair Value Measurements Using Unobservable Inputs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Redemption of redeemable convertible preferred stock		$ (4,428)	$ (3,031)
Redeemable Convertible Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Redemption of redeemable convertible preferred stock		(4,428)	(3,031)
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance beginning	$ 645,849	611,025
Allocation of ESOP shares to participants	4,391	8,211
Change in fair value	77,149	31,175
Payments of contingent consideration liability	(628)	(519)
Redemption of redeemable convertible preferred stock		(4,428)
Transfer out of Level 3	(724,317)
Transfer to Level 3		385
Balance ending	2,444	645,849	611,025
Level 3 [Member] | Contingent Consideration [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance beginning	2,898	2,679
Change in fair value	174	738
Payments of contingent consideration liability	(628)	(519)
Balance ending	2,444	2,898	2,679
Level 3 [Member] | Redeemable Common Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance beginning	549,119	522,276
Change in fair value	65,921	26,458
Transfer out of Level 3	(615,040)
Transfer to Level 3		385
Balance ending		549,119	522,276
Level 3 [Member] | Redeemable Convertible Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance beginning	291,720	282,547
Change in fair value	34,903	13,601
Redemption of redeemable convertible preferred stock		(4,428)
Transfer out of Level 3	(326,623)
Balance ending		291,720	282,547
Level 3 [Member] | Deferred Compensation - Unearned ESOP Shares [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Balance beginning	(197,888)	(196,477)
Allocation of ESOP shares to participants	4,391	8,211
Change in fair value	(23,849)	(9,622)
Transfer out of Level 3	$ 217,346
Balance ending		$ (197,888)	$ (196,477)

ADS Mexicana - Additional Infor

ADS Mexicana - Additional Information (Detail) - ADS Mexicana [Member] - Variable Interest Entity, Primary Beneficiary [Member] - USD ($) $ in Thousands	Mar. 31, 2013	Apr. 30, 2013	Mar. 31, 2015
Variable Interest Entity [Line Items]
Company's ownership percentage	50.00%	1.00%	51.00%
Additional equity interest in its consolidated subsidiary, payment		$ 520

ADS Mexicana - Assets and Liabi

ADS Mexicana - Assets and Liabilities of Ads Mexicana (Detail) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013
ASSETS
Current assets	$ 446,731	$ 426,558	[1]
Property, plant and equipment, net	377,067	350,351	[1]
Other noncurrent assets	61,167	65,447	[1]
Total assets	1,041,699	989,567	[1]	$ 950,765
Liabilities
Current liabilities	197,594	185,554	[1]
Total liabilities	727,102	761,318	[1]
ADS Mexicana [Member] | Variable Interest Entity, Primary Beneficiary [Member]
ASSETS
Current assets	24,822	32,877
Property, plant and equipment, net	18,556	21,633
Other noncurrent assets	2,523	3,378
Total assets	45,901	57,888
Liabilities
Current liabilities	11,134	11,595
Noncurrent liabilities	5,259	7,020
Total liabilities	$ 16,393	$ 18,615
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Investment in Unconsolidated 91

Investment in Unconsolidated Affiliates - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2015USD ($)JointVenture	Jul. 17, 2015	Apr. 07, 2014USD ($)	Mar. 31, 2014USD ($)		Jul. 15, 2013USD ($)	Mar. 31, 2013USD ($)	[1]	Mar. 31, 2012USD ($)	[1]
Investments in and Advances to Affiliates [Line Items]
Number of unconsolidated joint venture participated | JointVenture	3
Cash	$ 3,623,000			$ 3,931,000	[1]		$ 1,361,000		$ 2,082,000
Inventories	269,842,000			259,891,000	[1]
Intangible assets	$ 58,055,000			59,194,000	[1]
Amortization Period	10 years
Investments in Majority-owned Subsidiaries [Member]
Investments in and Advances to Affiliates [Line Items]
Inventories				1,285,000
BaySaver [Member]
Investments in and Advances to Affiliates [Line Items]
Percentage of ownership	55.00%					55.00%
Percentage of voting interest						50.00%
Percentage of minority ownership						45.00%
Amortization expenses adjustment	$ 1,639,000
Investment in unconsolidated affiliates, description of percentage of voting rights	In July 2015, we acquired an additional 10% interest in BaySaver and entered into Amendment No. 1 (“BaySaver amendment”) which revised the voting rights for BaySaver. As a result, we now have more than 50% of the voting rights, in addition to owning 65% of the equity in BaySaver, and will be required to consolidate the assets and liabilities of BaySaver subsequent to the date of our additional investment and BaySaver amendment in July 2015.
BaySaver [Member] | Subsequent Event [Member]
Investments in and Advances to Affiliates [Line Items]
Percentage of ownership		65.00%
Additionally acquired percentage of ownership in joint ventures		10.00%
BaySaver [Member] | Investments in Majority-owned Subsidiaries [Member]
Investments in and Advances to Affiliates [Line Items]
Cash						$ 3,500,000
Inventories						1,285,000
Intangible assets						$ 0
South American Joint Venture [Member]
Investments in and Advances to Affiliates [Line Items]
Percentage of ownership	50.00%
Capital condribution	$ 4,000,000			$ 2,875,000
Tigre-ADS USA [Member]
Investments in and Advances to Affiliates [Line Items]
Percentage of ownership	49.00%		49.00%
Amount paid for acquiring shares			$ 3,566,000
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Investment in Unconsolidated 92

Investment in Unconsolidated Affiliates - Summarized Financial Data of Joint Ventures (Detail) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Investments in and Advances to Affiliates [Line Items]
Investment in unconsolidated affiliates	$ 25,038	$ 23,624	$ 21,899
South American Joint Venture [Member]
Investments in and Advances to Affiliates [Line Items]
Investment in unconsolidated affiliates	17,081	18,422
Receivable from unconsolidated joint venture	5,607	8,313
BaySaver [Member]
Investments in and Advances to Affiliates [Line Items]
Investment in unconsolidated affiliates	4,906	5,202
Receivable from unconsolidated joint venture	59	$ 6
Tigre-ADS USA [Member]
Investments in and Advances to Affiliates [Line Items]
Investment in unconsolidated affiliates	3,051
Receivable from unconsolidated joint venture	$ 27

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($)	Mar. 31, 2013	Feb. 28, 2015	Apr. 30, 2013	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Jul. 15, 2013
Related Party Transaction [Line Items]
Interest rate description for the loaned amount				ADS Mexicana loaned $5,000 to an entity owned by a Grupo Altima owner and such loan was repaid the same month. The applicable interest rate for the loan was 2.35%.
Outstanding letters of credit				$ 8,005,000
Pipe Sales Joint Venture Agreement [Member]
Related Party Transaction [Line Items]
Proceeds from sales				3,783,000	$ 6,687,000	$ 3,370,000
Outstanding receivables from related party				1,005,000	2,480,000
South American Joint Venture [Member]
Related Party Transaction [Line Items]
Maximum borrowings permitted under credit facility				$ 19,000,000
Credit facility, maturity date				Feb. 5, 2017
Outstanding letters of credit				$ 13,600,000	11,100,000
Percentage of debt guarantee				50.00%
Maximum potential payment under guarantee				$ 11,000,000
Percentage of ownership				50.00%
South American Joint Venture [Member] | US Dollar Denominated Loans [Member]
Related Party Transaction [Line Items]
Weighted average interest rate				3.33%
South American Joint Venture [Member] | Chilean Peso Denominated Loans [Member]
Related Party Transaction [Line Items]
Weighted average interest rate				7.54%
BaySaver [Member]
Related Party Transaction [Line Items]
Percentage of ownership				55.00%			55.00%
Borrowings outstanding				$ 500,000	400,000
Dividend received from investee				$ 1,100,000
ADS Mexicana [Member]
Related Party Transaction [Line Items]
Amount loaned to related party		$ 5,000,000
Interest rate for the loaned amount		2.35%
ADS Mexicana [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Related Party Transaction [Line Items]
Company's ownership percentage	50.00%		1.00%	51.00%
Cash payments for consulting services related to the operations of the business and a noncompete arrangement				$ 459,000	$ 817,000	$ 0
Guarantee percentage on credit facility				100.00%
Maximum potential guarantee payments				$ 12,000,000
Guarantee description				We are the guarantor of 100% of ADS Mexicana's credit facility

Debt - Long-term Debt (Detail)

Debt - Long-term Debt (Detail) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Debt Instrument [Line Items]
Revolving credit facility	$ 8,005
Long term debt	399,895	$ 454,048
Current maturities	(9,580)	(11,153)	[1]
Long-term debt obligation	390,315	442,895	[1]
ADS [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility	205,100	248,100
Term Notes [Member]
Debt Instrument [Line Items]
Notes payable	91,250	97,500
Senior Notes Payable [Member]
Debt Instrument [Line Items]
Senior notes	100,000	100,000
Mortgage Notes Payable [Member]
Debt Instrument [Line Items]
Senior notes		3,733
Industrial Revenue Bonds [Member]
Debt Instrument [Line Items]
Industrial revenue bonds	$ 3,545	$ 4,715
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Debt (Bank Term Loans) - Additi

Debt (Bank Term Loans) - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2015USD ($)Derivative	Mar. 31, 2014USD ($)	Mar. 31, 2013
Debt Instrument [Line Items]
Revolving credit facility interest rate	2.64%	2.30%	3.01%
Outstanding letters of credit	$ 8,005,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility expiration date	2018-06
Borrowing under line of credit facility	$ 111,895,000
Revolving Credit Facility [Member] | Interest Rate Swaps [Member]
Debt Instrument [Line Items]
Number of interest rate derivative | Derivative	2
Revolving Credit Facility [Member] | Forward Stating Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative, type of interest rate paid on swap	30-Day LIBOR interest rate
Derivative instrument notional amount	$ 50,000,000
Rate of fixed interest swap	0.86%
Maturity period of interest rate derivative	3 years
Revolving Credit Facility [Member] | Forward Second Interest Rate Swap [Member]
Debt Instrument [Line Items]
Derivative instrument notional amount	$ 50,000,000
Rate of fixed interest swap	1.08%
Maturity period of interest rate derivative	2 years
ADS Mexicana [Member]
Debt Instrument [Line Items]
Borrowing under line of credit facility	$ 12,000,000
ADS Mexicana [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility outstanding	12,000,000
Outstanding letters of credit	0
ADS [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility outstanding	325,000,000
Outstanding letters of credit	205,100,000	$ 248,100,000
Term Loan Facility [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility outstanding	$ 100,000,000
Term loan maturity date	2018-06

Debt (Senior Notes Payable) - A

Debt (Senior Notes Payable) - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	Jul. 31, 2013	Dec. 31, 2009	Mar. 31, 2015
Debt Instrument [Line Items]
Excess leverage fee outstanding			$ 500
Senior Notes Payable [Member]
Debt Instrument [Line Items]
Quarterly interest payable		5.60%
Senior notes		$ 75,000
Principal payment		25,000
Senior Notes Payable [Member] | ADS [Member]
Debt Instrument [Line Items]
Senior Notes	$ 25,000	$ 100,000
Quarterly interest payable	4.05%
Principal payment	$ 25,000
Debt instrument leverage fee			The rate is subject to an additional 200 basis point excess leverage fee if calculated leverage ratio exceeds 3 to 1 at the end of a fiscal quarter.

Debt (Mortgage Notes Payable) -

Debt (Mortgage Notes Payable) - Additional Information (Detail) - Mortgage Notes Payable [Member] $ in Thousands	Mar. 31, 2015MortgageLoan	Mar. 31, 2014USD ($)
Debt Instrument [Line Items]
Number of mortgage notes | MortgageLoan	2
Variable interest rate		2.903%
Fixed interest rate		5.10%
Land and buildings net book value | $		$ 8,637

Debt (Industrial Revenue Bonds)

Debt (Industrial Revenue Bonds) - Additional Information (Detail) - Industrial Revenue Bonds [Member] $ in Thousands	12 Months Ended
	Mar. 31, 2015USD ($)BondsFacility	Mar. 31, 2011Bonds
Debt Instrument [Line Items]
Number of production facilities | Facility	4
Letter of Credit [Member]
Debt Instrument [Line Items]
Debt instrument fee percentage	3.25%
Nontaxable Municipal Bonds [Member]
Debt Instrument [Line Items]
Number of bonds retired | Bonds	1	2
Average interest rate	3.32%
Collateral amount | $	$ 9,997

Debt (ADS Mexicana Short Term C

Debt (ADS Mexicana Short Term Credit Facility) - Additional Information (Detail) MXN in Millions	Dec. 11, 2014USD ($)	Mar. 31, 2015USD ($)	Dec. 11, 2014MXN
Debt Instrument [Line Items]
Outstanding letters of credit		$ 8,005,000
ADS Mexicana [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit maturity	12 months
Current borrowing capacity	$ 5,000,000		MXN 72.5
Outstanding letters of credit		$ 0

Debt (Debt Covenants and Divide

Debt (Debt Covenants and Dividend Restrictions) - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2015USD ($)	Mar. 31, 2014USD ($)	[1]	Mar. 31, 2013USD ($)	[1]
Debt Instrument [Line Items]
Maximum capital distributions	$ 7,869,000	$ 115,058,000		$ 6,155,000
Debt Covenants [Member] | Maximum [Member]
Debt Instrument [Line Items]
Maximum capital distributions	$ 50,000,000
Leverage ratio	4
Debt Covenants [Member] | Minimum [Member]
Debt Instrument [Line Items]
Leverage ratio, minimum	3
Fixed charge coverage ratio	1.25
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Debt - Maturities of Long-term

Debt - Maturities of Long-term Debt (Detail) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Debt Disclosure [Abstract]
2,016	$ 9,580
2,017	35,870
2,018	35,905
2,019	293,540
2,020	25,000
Thereafter	0
Long term debt	$ 399,895	$ 454,048

Debt (Subsequent Events Related

Debt (Subsequent Events Related to the Bank Term Loans and Senior Notes) - Additional Information (Detail) - $ / shares	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015
Subsequent Event [Member]
Debt Instrument [Line Items]
Cash dividend declared	$ 0.0195	$ 0.05	$ 0.05	$ 0.05

Derivative Transactions - Summa

Derivative Transactions - Summary of Fair Values for Various Derivatives (Detail) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
(Liability)	$ (765)	$ (1,001)
Foreign Exchange Forward Contracts [Member]
Derivatives, Fair Value [Line Items]
Asset	28
Diesel Fuel Option Collars [Member]
Derivatives, Fair Value [Line Items]
(Liability)	(2,841)
Propylene Swaps [Member]
Derivatives, Fair Value [Line Items]
Asset		$ 27
(Liability)	$ (5,142)

Derivative Transactions - Sched

Derivative Transactions - Schedule of Cash Settlements and Losses and (Gains) on Mark-to-Market Adjustments for Changes in Fair Value of Derivative Contracts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013
Derivatives, Fair Value [Line Items]
Total derivative unrealized fair value gains and losses	$ 7,746	$ (53)	[1]	$ (4)	[1]
Total realized gains and losses on derivatives	7,705	(84)		(57)
Total realized and unrealized losses (gains) included in Other miscellaneous expense (income), net	15,451	(137)		(61)
Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Total derivative unrealized fair value gains and losses	(236)	(81)		(221)
Foreign Exchange Forward Contracts [Member]
Derivatives, Fair Value [Line Items]
Total derivative unrealized fair value gains and losses	(28)
Total realized gains and losses on derivatives	5,636
Diesel Fuel Option Collars [Member]
Derivatives, Fair Value [Line Items]
Total derivative unrealized fair value gains and losses	2,841	55		217
Total realized gains and losses on derivatives	736			$ (57)
Propylene Swaps [Member]
Derivatives, Fair Value [Line Items]
Total derivative unrealized fair value gains and losses	5,169	(27)
Total realized gains and losses on derivatives	$ 1,333	$ (84)
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Derivative Transactions - Sc105

Derivative Transactions - Schedule of Cash Settlements and Losses and (Gains) on Mark-to-Market Adjustments for Changes in Fair Value of Derivative Contracts (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013
Derivatives, Fair Value [Line Items]
Other miscellaneous expense (income), net	$ 14,370	$ (1,177)	[1]	$ 103	[1]
Derivatives Contracts [Member]
Derivatives, Fair Value [Line Items]
Other miscellaneous expense (income), net	$ (1,081)	$ (1,040)		$ 164
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Commitments and Contingencies (

Commitments and Contingencies (Purchase Commitments) - Additional Information (Detail) - Inventory [Member] $ in Thousands	12 Months Ended
	Mar. 31, 2015USD ($)lb
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Quantity of raw materials to be purchased under the purchase commitment | lb	18,000
Total purchase commitment | $	$ 11,790
Purchase contracts period range, start	1 month
Purchase contracts period range, end	12 months

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands

Jan. 06, 2014

Mar. 31, 2015

Dec. 31, 2014

Sep. 30, 2014

Jun. 30, 2014

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Sep. 30, 2012

Jun. 30, 2012

Mar. 31, 2015

Mar. 31, 2014

Mar. 31, 2013

Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]

Dividend per share declared

$ 0.040

$ 0.040

$ 0

$ 0

$ 0.029

$ 0.029

$ 0.029

$ 0.026

$ 0.026

$ 0.026

$ 0.026

$ 0.08

$ 1.68

[1]

$ 0.10

[1]

Compensation expense related to allocation of ESOP shares

$ 12,144,000

$ 7,891,000

$ 7,283,000

ESOP directed to the Plan trustee

$ 824,000

$ 824,000

$ 23,614,000

Redeemable Convertible Preferred Stock [Member]

Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]

Employee stock ownership plan number of shares approved by the board of directors to the plan

737

737

734

Employee stock ownership plan allocated as shares

7,914

7,914

7,668

Special Dividend [Member]

Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]

Dividend per share declared

$ 1.59

Dividend, total amount

$ 108,101,000

Compensation expense related to allocation of ESOP shares

$ 22,624,000

Special Dividend [Member] | Cost of Goods Sold [Member]

Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]

Compensation expense related to allocation of ESOP shares

13,896,000

Special Dividend [Member] | Selling Expenses [Member]

Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]

Compensation expense related to allocation of ESOP shares

4,550,000

Special Dividend [Member] | General and Administrative Expense [Member]

Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]

Compensation expense related to allocation of ESOP shares

$ 4,178,000

Dividend Declared [Member] | Redeemable Convertible Preferred Stock [Member]

Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]

Employee stock ownership plan allocated as shares

6

6

11

Profit-Sharing Plan [Member]

Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]

Contribution to the profit sharing plan

$ 0

$ 0

$ 0

Employee Stock Ownership Plan E S O P Plan [Member]

Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]

Employee stock ownership plan participation description

Employees of ADS who have reached the age of 18 are generally eligible to participate in the Plan on March 31 after six months of service.

Employee stock ownership plan stock ownership description

Upon attainment of age 50 and seven years of participation in the Plan, a participant may elect to diversify specified percentages of the number of shares of ADS stock credited to the participant's ESOP stock account in compliance with applicable law.

Employee Stock Ownership Plan E S O P Plan [Member] | ADS [Member]

Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]

Debt instrument , term

30 years

[1]

See Note 2. Restatement of Previously Issued Financial Statements.

Accumulated Other Comprehens108

Accumulated Other Comprehensive Loss - Summary of Changes in Balances of Each Component of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands		12 Months Ended
		Mar. 31, 2015		Mar. 31, 2014		Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		$ (6,830)	[1]	$ (1,081)		$ (2,525)
Other comprehensive income (loss)		(8,691)		(5,747)		1,428
Income Tax (expense) benefit	[1]			(2)		16
Ending Balance		(15,521)		(6,830)	[1]	(1,081)
Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		(6,838)		(1,085)		(2,554)
Other comprehensive income (loss)		(8,691)		(5,753)		1,469
Ending Balance		(15,529)		(6,838)		(1,085)
Other [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		8		4		29
Other comprehensive income (loss)				6		(41)
Income Tax (expense) benefit				(2)		16
Ending Balance		$ 8		$ 8		$ 4
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Stockholders' Equity (Deficit)

Stockholders' Equity (Deficit) - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended											12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015
Class of Stock [Line Items]
Common stock dividend per share	$ 0.040	$ 0.040	$ 0	$ 0	$ 0.029	$ 0.029	$ 0.029	$ 0.026	$ 0.026	$ 0.026	$ 0.026	$ 0.08	$ 1.68	[1]	$ 0.10	[1]
Total Cash Dividends Paid on Common Stock												$ 4,270	$ 80,102		$ 4,817
Purchase of common stock													80
Price per share purchased													$ 13.64
Price of shares purchased subsequent to IPO	$ 17.21											$ 17.21
Subsequent Event [Member]
Class of Stock [Line Items]
Cash dividend declared																	$ 0.0195	$ 0.05	$ 0.05	$ 0.05
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Mezzanine Equity (Redeemable Co

Mezzanine Equity (Redeemable Common Stock) - Additional Information (Detail) - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013	[1]	Mar. 31, 2012	[1]
Temporary Equity [Line Items]
Percentage of minority equity owners			15.00%
Major share holders equity securities amount	[1]		$ 549,119
Redeemable Common Stock [Member]
Temporary Equity [Line Items]
Mezzanine equity, shares outstanding		0	38,320	[1]	38,292		38,292
Classified in permanent equity as a result of the IPO		$ 10,101
IPO [Member]
Temporary Equity [Line Items]
Major share holders equity securities amount			$ 50,000
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Mezzanine Equity (Redeemable111

Mezzanine Equity (Redeemable Convertible Preferred Stock) - Additional Information (Detail) - Redeemable Convertible Preferred Stock [Member] - $ / shares	3 Months Ended			12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Temporary Equity [Line Items]
Preferred stock conversion basis				Convertible at a rate of 0.7692 shares of common stock for each share of Redeemable convertible preferred stock.
Redeemable convertible preferred stock, per share				$ 0.781
Preferred stock, issue price, per share				$ 0.781
Preferred stock, number of shares issuable upon conversion				0.7692
Preferred stock, dividend rate, percentage				2.50%	2.50%	2.50%
Annual dividend record date				Mar. 15, 2015	Mar. 15, 2014	Mar. 15, 2013
Dividend per share	$ 0.0221	$ 0.0221	$ 0.0221			$ 0.0196
Dividend to be paid				Mar. 31, 2016

Mezzanine Equity - Schedule of

Mezzanine Equity - Schedule of Dividends Allocation (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Dividends Payable [Line Items]
Dividend	$ 127	$ 118	$ 110
Redeemable Convertible Preferred Stock [Member]
Dividends Payable [Line Items]
Total cash dividends	534	10,021
Total cash dividends	534	10,021
Total ESOP required dividends	$ 154	$ 150
Allocated shares	7,914	7,668
Required dividend per share	$ 0.0195	$ 0.0195
Redeemable Convertible Preferred Stock [Member] | Quarterly Cash Dividends [Member]
Dividends Payable [Line Items]
Total cash dividends	$ 507	$ 526
Total cash dividends	507	526
Redeemable Convertible Preferred Stock [Member] | Annual Cash Dividends [Member]
Dividends Payable [Line Items]
Total cash dividends	27	32
Dividend	127	118
Total cash dividends	$ 27	32
Redeemable Convertible Preferred Stock [Member] | Special Dividend [Member]
Dividends Payable [Line Items]
Total cash dividends		9,463
Total cash dividends		$ 9,463

Stock-Based Compensation - (Def

Stock-Based Compensation - (Deferred Compensation - Unearned ESOP Shares) - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Average fair value of shares allocated under ESOP, per share	$ 16.61	$ 10.90	$ 10.25
Compensation expense related to allocation of ESOP shares	$ 12,144	$ 7,891	$ 7,283
Redeemable Convertible Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of shares allocated under ESOP, per share	$ 22.05	$ 11.16	$ 10.64

Stock-Based Compensation (Stock

Stock-Based Compensation (Stock Options) - Additional Information (Detail) $ in Thousands	12 Months Ended
	Mar. 31, 2015USD ($)Installmentshares	Mar. 31, 2014USD ($)	Mar. 31, 2013USD ($)	May. 31, 2014shares	Aug. 31, 2013shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based awards, unrecognized compensation expense | $	$ 3,269	$ 6,884
Liability Classified Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based awards, unrecognized compensation expense | $	0	2,383
Equity Classified Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based awards, unrecognized compensation expense | $	$ 3,269	4,501
2013 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based awards, number of shares authorized for grant | shares				1,412,000
Stock based awards, shares available for grant | shares	1,412,000
2013 Stock Option Plan [Member] | Employee Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based awards, number of shares authorized for grant | shares					3,323,000
2013 Stock Option Plan [Member] | Employee Stock Options [Member] | Management [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards, expiration period	10 years
Stock awards, number of annual installments for vesting | Installment	5
2013 Stock Option Plan [Member] | Employee Stock Options [Member] | Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards, expiration period	10 years
Stock-based awards, vesting period	4 years
2000 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based awards, shares available for grant | shares	1,106,000
2000 Stock Option Plan [Member] | Employee Stock Options [Member] | Management [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards, expiration period	10 years
Stock awards, number of annual installments for vesting | Installment	3
2000 and 2013 Stock Option Plan [Member] | Employee Stock Options [Member] | General and Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense | $	$ 4,418	$ 2,669	$ 545

Stock-Based Compensation - Sche

Stock-Based Compensation - Schedule of Estimate Fair Value of Stock Options Granted (Detail) - Employee Stock Options [Member]	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected stock price volatility	40.00%	44.00%	48.00%
Risk-free interest rate	2.10%	2.30%	1.20%
Dividend yield	0.86%	0.84%	0.81%
Weighted Average [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average expected option life (years)	8 years	8 years	8 years

Stock-Based Compensation - S116

Stock-Based Compensation - Schedule of Stock Option Activity (Detail) - $ / shares shares in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
2000 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding, Beginning Balance	913	1,333	1,524
Number of Shares, Issued	78	25	134
Number of Shares, Exercised	(235)	(427)	(325)
Number of Shares, Forfeited	(10)	(18)
Number of Shares, Outstanding, Ending Balance	746	913	1,333	1,524
Number of Shares, Vested at end of year	668	485	654
Number of Shares, Unvested at end of year	78	428	679
Number of Shares, Vested and expected to vest at end of year	640	800	1,204
Weighted Average Exercise Price, Outstanding, Beginning Balance	$ 9.48	$ 8.10	$ 7.03
Weighted Average Exercise Price, Issued	15.74	13.64	12.59
Weighted Average Exercise Price, Exercised	7.50	5.19	4.89
Weighted Average Exercise Price, Forfeited	10.48	10.77
Weighted Average Exercise Price, Outstanding, Ending Balance	10.75	9.48	8.10	$ 7.03
Weighted Average Exercise Price, Vested at end of period	10.16	8.01	5.75
Weighted Average Exercise Price, Unvested at end of year	15.74	11.14	10.37
Weighted Average Exercise Price, Vested and expected to vest at end of year	10.73	9.36	7.90
Weighted Average Exercise Price, Fair value of options granted during the year	$ 6.76	$ 6.38	$ 6.01
Weighted Average Remaining Contractual Term, Outstanding	4 years 1 month 6 days	4 years 1 month 6 days	4 years	3 years 10 months 24 days
Weighted Average Remaining Contractual Term, Vested at end of year	3 years 6 months	2 years 2 months 12 days	2 years 2 months 12 days
Weighted Average Remaining Contractual Term, Unvested at end of year	9 years 4 months 24 days	6 years 3 months 18 days	5 years 8 months 12 days
Weighted Average Remaining Contractual Term, Vested and expected to vest at end of year	7 years 7 months 6 days	5 years 2 months 12 days	4 years 7 months 6 days
Weighted Average Remaining Contractual Term, Outstanding	4 years 1 month 6 days	4 years 1 month 6 days	4 years	3 years 10 months 24 days
2013 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Outstanding, Beginning Balance	1,911
Number of Shares, Issued		1,958
Number of Shares, Forfeited		(47)
Number of Shares, Outstanding, Ending Balance	1,911	1,911
Number of Shares, Vested at end of year	408
Number of Shares, Unvested at end of year	1,503	1,911
Number of Shares, Vested and expected to vest at end of year	1,702	1,704
Weighted Average Exercise Price, Outstanding, Beginning Balance	$ 13.64
Number of Shares, Fair value of options granted during the year	0	$ 0
Weighted Average Exercise Price, Forfeited		13.64
Weighted Average Exercise Price, Outstanding, Ending Balance	13.64	13.64
Weighted Average Exercise Price, Vested at end of period	13.64
Weighted Average Exercise Price, Unvested at end of year	13.64	13.64
Weighted Average Exercise Price, Vested and expected to vest at end of year	$ 13.64	13.64
Weighted Average Exercise Price, Fair value of options granted during the year		$ 6.22
Weighted Average Remaining Contractual Term, Outstanding	8 years 5 months 1 day	9 years 5 months 1 day	0 years
Weighted Average Remaining Contractual Term, Vested at end of year	8 years 5 months 1 day	0 years
Weighted Average Remaining Contractual Term, Unvested at end of year	8 years 5 months 1 day	9 years 5 months 1 day
Weighted Average Remaining Contractual Term, Vested and expected to vest at end of year	8 years 5 months 1 day	9 years 5 months 1 day
Weighted Average Remaining Contractual Term, Fair value of options granted during the year	0 years
Weighted Average Remaining Contractual Term, Outstanding	8 years 5 months 1 day	9 years 5 months 1 day	0 years
2013 Stock Option Plan [Member] | Equity Classified [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Issued		1,440
Weighted Average Exercise Price, Issued		$ 13.64
2013 Stock Option Plan [Member] | Liability Classified [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Issued		518
Weighted Average Exercise Price, Issued		$ 13.64

Stock-Based Compensation - S117

Stock-Based Compensation - Schedule of Stock Option Activity (Parenthetical) (Detail)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
2000 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of forfeiture rate on option granted	15.00%	15.00%	15.00%
2013 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of forfeiture rate on option granted	15.00%	15.00%

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of Unvested Stock Option Grants (Detail) - $ / shares shares in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
2000 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Unvested at beginning of year	428	679
Number of Shares, Granted	78	25	134
Number of Shares, Vested	(428)	(276)
Number of Shares, Unvested at end of year	78	428	679
Weighted Average Grant Date Fair Value, Unvested at beginning of year	$ 5.82	$ 5.73
Weighted Average Grant Date Fair Value, Granted	6.76	6.38	$ 6.01
Weighted Average Grant Date Fair Value, Vested	5.82	5.49
Weighted Average Grant Date Fair Value, Unvested at end of year	$ 6.76	$ 5.82	$ 5.73
2013 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Unvested at beginning of year	1,911
Number of Shares, Granted		1,958
Number of Shares, Vested	(408)
Number of Shares, Forfeited		(47)
Number of Shares, Unvested at end of year	1,503	1,911
Weighted Average Grant Date Fair Value, Unvested at beginning of year	$ 6.22
Weighted Average Grant Date Fair Value, Granted		$ 6.22
Weighted Average Grant Date Fair Value, Vested	6.22
Weighted Average Grant Date Fair Value, Forfeited		6.22
Weighted Average Grant Date Fair Value, Unvested at end of year	$ 6.22	$ 6.22
Non Employee Director Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Granted	48
Number of Shares, Vested	(48)
Weighted Average Grant Date Fair Value, Granted	$ 18.88
Weighted Average Grant Date Fair Value, Vested	$ 18.88

Stock-Based Compensation (Restr

Stock-Based Compensation (Restricted Stock) - Additional Information (Detail) - Restricted Stock [Member] - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based awards, vesting period	5 years
Share-based compensation expense	$ 562	$ 1,849	$ 1,535
Stock based awards, shares available for grant	335
Unrecognized compensation expense	$ 2,301	$ 2,812
Unrecognized compensation cost, weighted average service period for recognition	2 years 2 months 12 days	3 years
Vesting Immediately [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 0	$ 385	$ 533

Stock-Based Compensation - S120

Stock-Based Compensation - Summary of Unvested Restricted Stock Grants (Detail) - Restricted Stock [Member] - $ / shares shares in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Unvested at beginning of year	311	273	179
Number of shares, granted		155	151
Number of Shares, Vested	(126)	(104)	(47)
Number of Shares, Forfeited	(2)	(13)	(10)
Number of Shares, Unvested at end of year	183	311	273
Weighted Average Grant Date Fair Value, Unvested at beginning of year	$ 12.40	$ 11.63	$ 10.39
Weighted Average Grant Date Fair Value, Granted		13.64	12.59
Weighted Average Grant Date Fair Value, Vested	12.01	11.78	10.29
Weighted Average Grant Date Fair Value, Forfeited	11.98	12.12	10.42
Weighted Average Grant Date Fair Value, Unvested at end of year	$ 12.65	$ 12.40	$ 11.63

Stock-Based Compensation (Non-E

Stock-Based Compensation (Non-Employee Director Compensation) - Additional Information (Detail) - Non Employee Director Compensation Plan [Member]	Sep. 06, 2014Directors$ / sharesshares	Mar. 31, 2015USD ($)shares	Jun. 18, 2014shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based awards, number of shares authorized for grant			282,000
Stock-based awards, vesting period from the date of issuance		1 year
Number of shares, granted	48,000
Number of directors to whom shares were granted | Directors	7
Fair market value of the granted shares | $ / shares	$ 18.88
Vesting date		Feb. 27, 2015
Stock-based compensation expense | $		$ 900,000
Shares available for grant		234,000
Unrecognized compensation expense | $		$ 0

Income Taxes - Income Before In

Income Taxes - Income Before Income Tax (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013
Income Tax Disclosure [Abstract]
United States	$ 17,312	$ 25,497		$ 25,116
Foreign	7,217	9,758		13,733
Income before income taxes	$ 24,529	$ 35,255	[1]	$ 38,849	[1]
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Income Taxes - Components of Pr

Income Taxes - Components of Provision for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013
Current:
Federal	$ 20,462	$ 21,774		$ 17,282
State and local	3,659	3,859		3,664
Foreign	830	1,126		2,391
Total current tax provision	24,951	26,759		23,337
Deferred:
Federal	(13,437)	(4,985)		(5,344)
State and local	(2,173)	(2,724)		(1,653)
Foreign	102	899		(405)
Total deferred tax benefit	(15,508)	(6,810)		(7,402)
Total income tax provision	$ 9,443	$ 19,949	[1]	$ 15,935	[1]
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Effective Tax Rate and Statutory Federal Income Tax Rate (Detail)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Income Tax Disclosure [Abstract]
Federal statutory rate	35.00%	35.00%	35.00%
Redeemable convertible preferred stock dividend	(0.80%)	(9.90%)	0.60%
ESOP stock appreciation	16.50%	7.30%	6.10%
ESOP compensation for Special Dividend on unallocated shares		22.50%
Effect of tax rate of foreign subsidiaries	2.50%	3.70%	(5.10%)
State and local taxes-net of federal income tax benefit	1.10%	2.40%	3.10%
Noncontrolling interest	(1.90%)	(5.50%)	(3.30%)
Uncertain tax position change	(7.10%)	5.90%	0.50%
Qualified production activity credit	(7.60%)	(5.00%)	(1.70%)
Cumulative adjustments to deferred taxes	0.20%	0.50%	5.10%
Other	0.60%	(0.30%)	0.70%
Effective rate	38.50%	56.60%	41.00%

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Income Tax Disclosure [Abstract]
ESOP compensation for Special Dividend on unallocated shares		22.50%
ESOP stock appreciation	16.50%	7.30%	6.10%
Undistributed earnings of foreign subsidiaries	$ 30,218
Unrecognized tax benefit that would decrease income tax expense	10,496	$ 12,907		$ 10,701
Decrease in unrecognized tax benefit related to income tax expense	10,151
Accrued interest and penalties related to unrecognized tax benefits	$ 460

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Assets and Deferred Tax Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Deferred tax assets:
State income taxes	$ 1,885	$ 2,684
ESOP loan repayment	1,421	1,473
Receivable and other allowances	2,534	1,189
Fuel hedge	3,534	471
Inventory	7,564	1,173
Non-Qualified stock options	2,855	1,099
Accrued rebates	1,378	1,626
Worker's compensation	667	754
Contingent consideration	247	252
Purchase card accrual	232	240
Other	1,041	620
Foreign NOL's	1,504	1,119
Valuation allowance	(1,504)	(1,119)
Total deferred tax assets	23,358	11,581
Deferred tax liabilities:
Intangible assets	10,984	11,208
Property, plant and equipment	51,958	47,021
Leases	4,036	6,282
Deferred system costs	3,160	4,432
Goodwill	2,736	2,061
Other	1,487	716
Total deferred tax liabilities	74,361	71,720
Net deferred tax liability	$ 51,003	$ 60,139

Income Taxes - Net Deferred Tax

Income Taxes - Net Deferred Tax Assets (Detail) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014
Income Tax Disclosure [Abstract]
Net current deferred tax assets	$ 14,085	$ 6,194
Net non-current deferred tax liabilities	$ 65,088	$ 66,333	[1]
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Income Taxes - Unrecognized Tax

Income Taxes - Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Income Tax Contingency [Line Items]
Tax positions taken in current year		$ 2,954
Balance as beginning of year	$ 12,907		$ 10,701
Decreases in tax positions for prior years	(680)	(47)
Increases in tax positions for prior years	336	844
Settlements	0	0
Lapse of statute of limitations	(2,067)	(1,545)
Balance at end of year	$ 10,496	$ 12,907
As Previously Reported [Member]
Income Tax Contingency [Line Items]
Balance as beginning of year			1,615
Decreases in tax positions for prior years			(8)
Increases in tax positions for prior years			10,969
Settlements			0
Lapse of statute of limitations			$ (1,875)

Net Income (Loss) Per Share - S

Net Income (Loss) Per Share - Summary of Net (Loss) Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended								12 Months Ended
		Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013
NET (LOSS) INCOME PER SHARE - BASIC:
Net income attributable to ADS		$ (13,465)	$ (3,325)	$ 16,844	$ 8,566	$ (14,210)	$ (4,877)	$ 14,740	$ 12,974	$ 8,620	$ 8,627	[1]	$ 20,660	[1]
Change in fair value of Redeemable convertible preferred stock										(11,054)	(3,979)		(5,869)
Dividends paid to Redeemable convertible preferred stockholders										(661)	(10,139)	[1]	(735)	[1]
Dividends paid to unvested restricted stockholders										(11)	(418)	[1]	(52)	[1]
Net (loss) income available to common stockholders and participating securities										(3,106)	(5,909)	[1]	14,004	[1]
Undistributed income allocated to participating securities	[1]												(1,127)
Net (loss) income available to common stockholders - Basic										$ (3,106)	$ (5,909)	[1]	$ 12,877	[1]
Weighted average number of common shares outstanding - Basic										51,344	47,277	[1]	46,698	[1]
Net (loss) income per common share - Basic		$ (0.26)	$ (0.07)	$ 0.41	$ (0.21)	$ (0.41)	$ (0.21)	$ 0.21	$ 0.21	$ (0.06)	$ (0.12)	[1]	$ 0.28	[1]
NET (LOSS) INCOME PER SHARE - DILUTED:
Net (loss) income available to common stockholders - Basic										$ (3,106)	$ (5,909)	[1]	$ 12,877	[1]
Weighted average number of common shares outstanding - Basic										51,344	47,277	[1]	46,698	[1]
Assumed exercise of stock options													551
Weighted average number of common shares outstanding - Diluted										51,344	47,277	[1]	47,249	[1]
Net (loss) income per common share - Diluted		$ (0.26)	$ (0.07)	$ 0.41	$ (0.21)	$ (0.41)	$ (0.21)	$ 0.21	$ 0.21	$ (0.06)	$ (0.12)	[1]	$ 0.27	[1]
Potentially dilutive securities excluded as anti-dilutive										4,454	535		78
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Business Segment Information -

Business Segment Information - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2015Segment
Segment Reporting [Abstract]
Number of reportable segments	2
Number of operating segments	2

Business Segment Information131

Business Segment Information - Schedule of Revenue from Reportable Segments by Product Type (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013
Segment Reporting Information [Line Items]
Total net sales	$ 207,054	$ 279,871	$ 366,714	$ 326,434	$ 181,830	$ 260,644	$ 332,727	$ 292,579	$ 1,180,073	$ 1,067,780	[1]	$ 1,017,102	[1]
Domestic [Member]
Segment Reporting Information [Line Items]
Total net sales									1,027,933	935,292		878,964
Domestic [Member] | Pipe [Member]
Segment Reporting Information [Line Items]
Total net sales									771,214	700,270		655,288
Domestic [Member] | Allied Products [Member]
Segment Reporting Information [Line Items]
Total net sales									256,719	235,022		223,676
International Segment [Member]
Segment Reporting Information [Line Items]
Total net sales									152,140	132,488		138,138
International Segment [Member] | Pipe [Member]
Segment Reporting Information [Line Items]
Total net sales									125,407	107,078		113,236
International Segment [Member] | Allied Products [Member]
Segment Reporting Information [Line Items]
Total net sales									$ 26,733	$ 25,410		$ 24,902
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Business Segment Information132

Business Segment Information - Schedule of Additional Financial Information Attributable to Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014		Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013
Segment Reporting Information [Line Items]
Net sales	$ 207,054	$ 279,871	$ 366,714	$ 326,434	$ 181,830		$ 260,644	$ 332,727	$ 292,579	$ 1,180,073	$ 1,067,780	[1]	$ 1,017,102	[1]
Gross profit	26,314	$ 49,178	$ 69,763	$ 60,858	12,690		$ 59,342	$ 65,588	$ 56,350	206,113	193,970	[1]	187,961	[1]
Segment Adjusted EBITDA										143,777	152,755		132,299
Interest expense										19,368	18,807	[1]	18,526	[1]
Depreciation and amortization										65,472	63,674	[1]	63,102	[1]
Equity in net (loss)income of unconsolidated affiliates										(2,335)	(3,086)	[1]	266	[1]
Capital expenditures										31,479	39,621	[1]	38,756	[1]
Investments in unconsolidated affiliates	25,038				23,624					25,038	23,624		21,899
Total identifiable assets	1,041,699				989,567	[1]				1,041,699	989,567	[1]	950,765
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Total identifiable assets	(69,193)				(13,308)					(69,193)	(13,308)		(1,967)
Domestic [Member]
Segment Reporting Information [Line Items]
Net sales										1,027,933	935,292		878,964
Gross profit										180,664	166,185		157,820
Segment Adjusted EBITDA										129,067	133,996		109,652
Interest expense										19,308	18,659		18,390
Depreciation and amortization										59,397	57,834		57,728
Equity in net (loss)income of unconsolidated affiliates										289	417
Capital expenditures										28,744	35,783		36,527
Investments in unconsolidated affiliates	7,957				5,202					7,957	5,202
Domestic [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total identifiable assets	942,267				889,263					942,267	889,263		838,489
International Segment [Member]
Segment Reporting Information [Line Items]
Net sales										152,140	132,488		138,138
Gross profit										25,449	27,785		30,141
Segment Adjusted EBITDA										14,710	18,759		22,647
Interest expense										60	148		136
Depreciation and amortization										6,075	5,840		5,374
Equity in net (loss)income of unconsolidated affiliates										(2,624)	(3,503)		266
Capital expenditures										2,735	3,838		2,229
Investments in unconsolidated affiliates	17,081				18,422					17,081	18,422		21,899
International Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total identifiable assets	$ 168,624				$ 113,612					$ 168,624	$ 113,612		$ 114,243
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Business Segment Information133

Business Segment Information - Schedule of Reconciliation of Segment EBITDA and Segment Adjusted EBITDA to Net Income (Detail) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net income		$ (13,465)	$ (3,325)	$ 16,844	$ 8,566	$ (14,210)	$ (4,877)	$ 14,740	$ 12,974	$ 8,620	$ 8,627	[1]	$ 20,660	[1]
Interest expense										19,368	18,807	[1]	18,526	[1]
Income tax expense										9,443	19,949	[1]	15,935	[1]
Fair market value adjustments to derivatives										7,746	(53)	[1]	(4)	[1]
Foreign currency transaction losses (gains)										(5,636)
Loss (gain) on sale of disposal or businesses										362	(2,863)	[1]	(951)	[1]
ESOP deferred stock-based compensation										12,144	7,891		7,283
Segment Adjusted EBITDA										143,777	152,755		132,299
Domestic [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net income										7,198	4,962		11,180
Depreciation and amortization										59,397	57,834		57,728
Interest expense										19,308	18,659		18,390
Income tax expense										8,510	17,924		13,949
Segment EBITDA										94,413	99,379		101,247
Fair market value adjustments to derivatives										7,774	(53)		(4)
Foreign currency transaction losses (gains)										5,636
Loss (gain) on sale of disposal or businesses										257	(2,817)		(880)
Unconsolidated affiliates interest, taxes, depreciation and amortization	[2]									1,341	156
Special Dividend compensation											22,624
Contingent consideration remeasurement										174	738		(74)
Stock-based compensation										5,880	4,518		2,080
ESOP deferred stock-based compensation										12,144	7,891		7,283
Transaction costs	[3]									1,448	1,560
Segment Adjusted EBITDA										129,067	133,996		109,652
International Segment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net income										5,553	7,258		12,000
Depreciation and amortization										6,075	5,840		5,374
Interest expense										60	148		136
Income tax expense										933	2,025		1,986
Segment EBITDA										12,621	15,271		19,496
Fair market value adjustments to derivatives										(28)
Foreign currency transaction losses (gains)										(232)	845		1,085
Loss (gain) on sale of disposal or businesses										105	(46)		(71)
Unconsolidated affiliates interest, taxes, depreciation and amortization	[2]									2,244	2,689		2,137
Segment Adjusted EBITDA										$ 14,710	$ 18,759		$ 22,647
[1]	See Note 2. Restatement of Previously Issued Financial Statements.
[2]	Includes our proportional share of interest, income taxes, depreciation and amortization related to our South American Joint Venture, our BaySaver Joint Venture and our Tigre-ADS USA Joint Venture, which are accounted for under the equity method of accounting. Fiscal year 2014 includes our proportional share of an asset impairment of $1,022 recorded by our South American Joint Venture.
[3]	Represents expenses recorded related to legal, accounting and other professional fees incurred in connection with our debt refinancing, completion of the IPO and secondary public offering and asset acquisitions and dispositions.

Business Segment Information134

Business Segment Information - Schedule of Reconciliation of Segment EBITDA and Segment Adjusted EBITDA to Net Income (Parenthetical) (Detail) $ in Thousands	12 Months Ended
	Mar. 31, 2014USD ($)
South American Joint Venture [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Asset impairment charges	$ 1,022

Business Segment Information135

Business Segment Information - Net Sales and Long-Lived Asset by Geographic Location (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 207,054	$ 279,871	$ 366,714	$ 326,434	$ 181,830	$ 260,644	$ 332,727	$ 292,579	$ 1,180,073	$ 1,067,780	[1]	$ 1,017,102	[1]
Long-lived Assets	404,213				375,885				404,213	375,885
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									1,161,909	1,046,595		996,935
Long-lived Assets	387,132				357,463				387,132	357,463
Other Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									18,164	21,185		$ 20,167
Long-lived Assets	$ 17,081				$ 18,422				$ 17,081	$ 18,422
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Supplemental Disclosures of 136

Supplemental Disclosures of Cash Flow Information - Increase (Decrease) in Cash Due to Changes Working Capital (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013
Supplemental Cash Flow Elements [Abstract]
Receivables	$ (10,351)	$ (5,876)		$ 24,755
Inventories	(7,563)	(39,017)		(32,163)
Prepaid expenses and other current assets	1,953	(3,298)		367
Accounts payable, accrued expenses, and other liabilities	(995)	10,771		(6,276)
Total	$ (16,956)	$ (37,420)	[1]	$ (13,317)	[1]
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Supplemental Disclosures of 137

Supplemental Disclosures of Cash Flow Information - Supplemental Disclosures Cash Flow Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013
Other Significant Noncash Transactions [Line Items]
Interest	$ 18,709	$ 17,267		$ 18,392
Income taxes	28,503	23,701		23,924
Redeemable convertible preferred stock dividend	127	118		110
Redemption of common stock to exercise stock options	93	1,187		805
Receivable recorded to exercise stock options		76		142
Purchases of plant, property, and equipment included in accounts payable	124	682		3,769
ESOP distributions in common stock	6,133
Inventory contributed for Investment in unconsolidated affiliate	269,842	259,891	[1]
Assets acquired and obligation incurred under capital lease	24,047	24,902		16,715
Lease obligation retired upon disposition of leased assets	779	3,708		109
Reclassification of liability classified stock options upon initial public offering	1,522
Reclassification of deferred public offering cost asset upon initial public offering	456
Miscellaneous [Member]
Other Significant Noncash Transactions [Line Items]
Receivable recorded for sale of businesses	$ 600	1,241		$ 1,800
Investments in Majority-owned Subsidiaries [Member]
Other Significant Noncash Transactions [Line Items]
Inventory contributed for Investment in unconsolidated affiliate		$ 1,285
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Quarterly Financial Informat138

Quarterly Financial Information - Summary of Quarterly Financial Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2015		Mar. 31, 2014		Mar. 31, 2013
Quarterly Financial Information [Line Items]
Net sales	$ 207,054	$ 279,871	$ 366,714	$ 326,434	$ 181,830	$ 260,644	$ 332,727	$ 292,579	$ 1,180,073		$ 1,067,780	[1]	$ 1,017,102	[1]
Gross profit	26,314	49,178	69,763	60,858	12,690	59,342	65,588	56,350	206,113		193,970	[1]	187,961	[1]
Net (loss) income	(13,734)	(1,953)	18,997	9,441	(16,168)	(2,818)	16,657	14,549	12,751	[1]	12,220	[1]	23,180	[1]
Net (loss) income attributable to ADS	$ (13,465)	$ (3,325)	$ 16,844	$ 8,566	$ (14,210)	$ (4,877)	$ 14,740	$ 12,974	$ 8,620		$ 8,627	[1]	$ 20,660	[1]
Net (loss) income per share available to common stockholders:
Basic	$ (0.26)	$ (0.07)	$ 0.41	$ (0.21)	$ (0.41)	$ (0.21)	$ 0.21	$ 0.21	$ (0.06)		$ (0.12)	[1]	$ 0.28	[1]
Diluted	$ (0.26)	$ (0.07)	$ 0.41	$ (0.21)	$ (0.41)	$ (0.21)	$ 0.21	$ 0.21	$ (0.06)		$ (0.12)	[1]	$ 0.27	[1]
As Previously Reported [Member]
Quarterly Financial Information [Line Items]
Net sales		$ 278,176	$ 364,724	$ 328,297	$ 181,232	$ 261,435	$ 333,240	$ 293,102			$ 1,069,009		$ 1,017,041
Gross profit		50,117	82,442	72,033	23,905	49,764	73,219	66,003			212,891		209,311
Net (loss) income		499	22,768	14,669	(11,780)	(9,839)	17,783	16,710			12,874		30,178
Net (loss) income attributable to ADS		$ (367)	$ 22,390	$ 14,241	$ (12,170)	$ (10,324)	$ 17,322	$ 16,296			$ 11,124		$ 28,159
Net (loss) income per share available to common stockholders:
Basic		$ (0.01)	$ 0.51	$ (0.09)	$ (0.32)	$ (0.32)	$ 0.26	$ 0.27			$ (0.07)		$ 0.42
Diluted		$ (0.01)	$ 0.51	$ (0.09)	$ (0.32)	$ (0.32)	$ 0.26	$ 0.27			$ (0.07)		$ 0.41
[1]	See Note 2. Restatement of Previously Issued Financial Statements.

Schedule II - Consolidated V139

Schedule II - Consolidated Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Valuation and Qualifying Accounts [Abstract]
Balance at beginning of period	$ 4,490	$ 6,145	$ 5,359
Charged to costs and expenses	1,914	(71)	1,687
Charged to other accounts	(291)	(67)	(2)
Deductions	(690)	(1,517)	(899)
Balance at end of period	$ 5,423	$ 4,490	$ 6,145

Schedule II - Consolidated V140

Schedule II - Consolidated Valuation and Qualifying Accounts (Parenthetical) (Detail) - USD ($) $ in Thousands	Mar. 31, 2015	Mar. 31, 2014		Mar. 31, 2013
Valuation and Qualifying Accounts Disclosure [Line Items]
Allowance for doubtful accounts	$ 5,423	$ 4,490	[1]
As Previously Reported [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Allowance for doubtful accounts		$ 3,977		$ 4,689
[1]	See Note 2. Restatement of Previously Issued Financial Statements.