10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

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

For the quarterly period ended August 31, 2014

OR

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

For the transition period from to

Commission file number 0-50761

AngioDynamics, Inc.

(Exact name of registrant as specified in its charter)

Delaware	11-3146460
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
14 Plaza Drive Latham, New York	12110
(Address of principal executive offices)	(Zip Code)

(518) 795-1400

Registrant’s telephone number, including area code

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

Title of each class	Name of each exchange on which registered
Common stock, par value $.01	NASDAQ Global Select Market
Preferred Stock Purchase Rights	NASDAQ Global Select Market

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

None

(Title of Class)

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  ¨    No  x

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Act.    Yes  ¨    No  x

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

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x    No  ¨

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

Large accelerated filer	¨	Accelerated filer	x
Non-accelerated filer	¨	Smaller reporting company	¨

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

Indicate the number of shares outstanding of each of the Issuer’s classes of common stock, as of the latest practicable date.

Class	Outstanding as of October 1, 2014
Common Stock, par value $.01	35,652,167

AngioDynamics, Inc. and Subsidiaries

TABLE OF CONTENTS

		Page
	Part I: Financial Information
Item 1.	Financial Statements
	Consolidated Statements of Income (unaudited)	3
	Consolidated Statements of Comprehensive Income (unaudited)	4
	Consolidated Balance Sheets (unaudited)	5
	Consolidated Statements of Cash Flows (unaudited)	6
	Consolidated Statement of Stockholders’ Equity (unaudited)	7
	Notes to Consolidated Financial Statements (unaudited)	8
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	25
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	30
Item 4.	Controls and Procedures	31
	Part II: Other Information
Item 1.	Legal Proceedings	33
Item 1A.	Risk Factors	33
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	33
Item 3.	Defaults on Senior Securities	33
Item 4.	Mine Safety Disclosures	34
Item 5.	Other Information	34
Item 6.	Exhibits	35

2

PART 1. FINANCIAL INFORMATION

Item 1. Financial Statements.

AngioDynamics, Inc. and Subsidiaries

CONSOLIDATED STATEMENTS OF INCOME

(unaudited)

(in thousands of dollars, except per share data)

	Three Months Ended
	Aug 31, 2014			Aug 31, 2013
Net sales	$	87,331		$	83,644
Cost of sales	41,506			41,064
Gross profit	45,825			42,580
Operating expenses
Research and development	6,718			6,709
Sales and marketing	20,067			19,963
General and administrative	7,323			6,686
Amortization of intangibles	4,015			4,109
Change in fair value of contingent consideration	801			733
Acquisition, restructuring and other items, net	2,664			2,002
Medical device excise tax	995			976
Total operating expenses	42,583			41,178
Operating income	3,242			1,402
Other (expenses) income
Interest expense	(799		)	(1,246		)
Interest income	—			—
Other expense	(1,025		)	(719		)
Total other expenses, net	(1,824		)	(1,965		)
Income (loss) before income tax expense (benefit)	1,418			(563		)
Income tax expense (benefit)	948			(190		)
Net income (loss)	$	470		$	(373	)
Income (loss) per share
Basic	$	0.01		$	(0.01	)
Diluted	$	0.01		$	(0.01	)
Basic weighted average shares outstanding	35,367			34,950
Diluted weighted average shares outstanding	35,885			34,950

The accompanying notes are an integral part of these financial statements.

3

AngioDynamics, Inc. and Subsidiaries

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(unaudited)

(in thousands of dollars)

	Three Months Ended
	Aug 31, 2014			Aug 31, 2013
Net Income (Loss)	$	470		$	(373	)
Other comprehensive income (loss), before tax:
Unrealized gain (loss) on interest rate swap	181			319
Unrealized gain (loss) on marketable securities	(140		)	—
Foreign currency translation gain (loss)	—			70
Other comprehensive income (loss), before tax	41			389
Income tax (expense) benefit related to items of other comprehensive income	(15		)	(118		)
Other comprehensive income (loss), net of tax	26			271
Total comprehensive income (loss), net of tax	$	496		$	(102	)

The accompanying notes are an integral part of these financial statements.

4

AngioDynamics, Inc. and Subsidiaries

CONSOLIDATED BALANCE SHEETS

(unaudited)

(in thousands of dollars, except share data)

	Aug 31, 2014			May 31, 2014
ASSETS
CURRENT ASSETS
Cash and cash equivalents	$	13,808		$	16,105
Marketable securities	1,670			1,809
Accounts receivable, net of allowances of $1,863 and $1,736, respectively	56,026			61,968
Inventories	70,421			61,234
Deferred income taxes	3,667			4,625
Prepaid income taxes	1,936			510
Prepaid expenses and other	6,777			5,471
Total current assets	154,305			151,722
PROPERTY, PLANT AND EQUIPMENT-AT COST, net	66,794			66,590
OTHER ASSETS	3,345			3,926
INTANGIBLE ASSETS, net	201,440			205,256
GOODWILL	360,473			360,473
DEFERRED INCOME TAXES, long term	9,236			10,403
PREPAID ROYALTIES	521			521
TOTAL ASSETS	$	796,114		$	798,891
LIABILITIES AND STOCKHOLDERS’ EQUITY
CURRENT LIABILITIES
Accounts payable	$	29,282		$	32,895
Accrued liabilities	17,700			16,652
Income Taxes Payable	624			689
Current portion of long-term debt	5,000			5,000
Current portion of contingent consideration	10,897			12,879
Other current liabilities	204			599
Total current liabilities	63,707			68,714
LONG-TERM DEBT, revolving credit facility	46,410			46,410
LONG-TERM DEBT, term loan, net of current portion	90,000			91,250
DEFERRED INCOME TAXES, long term	1,146			1,146
Contingent consideration, net of current portion	55,135			54,452
Other long term liabilities	32			84
Total liabilities	256,430			262,056
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS’ EQUITY
Preferred stock, par value $.01 per share, 5,000,000 shares authorized; no shares issued and outstanding	—			—
Common stock, par value $.01 per share, 45,000,000 shares authorized; issued and outstanding 35,646,491 and 35,442,004 shares at August 31, 2014 and May 31, 2014, respectively	356			353
Additional paid-in capital	510,704			508,354
Retained earnings	31,971			31,501
Treasury stock, 142,305 shares, at cost	(2,104		)	(2,104		)
Accumulated other comprehensive loss	(1,243		)	(1,269		)
Total stockholders’ equity	539,684			536,835
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	796,114		$	798,891

The accompanying notes are an integral part of these financial statements.

5

AngioDynamics, Inc. and Subsidiaries

CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited)

(in thousands of dollars)

	Three Months Ended
	Aug 31, 2014			Aug 31, 2013
Cash flows from operating activities:
Net income (loss)	$	470		$	(373	)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,700			5,910
Stock based compensation	1,395			1,152
Change in fair value of contingent consideration	801			733
Deferred income taxes	2,110			569
Change in accounts receivable allowances	127			195
Other	190			(108		)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	5,815			1,793
Inventories	(9,187		)	(3,473		)
Prepaid expenses and other assets	(2,836		)	(375		)
Accounts payable, accrued and other liabilities	(233		)	1,277
Net cash provided by operating activities	5,352			7,300
Cash flows from investing activities:
Additions to property, plant and equipment	(5,104		)	(2,903		)
Acquisition of business, net of cash acquired	—			(3,239		)
Acquisition of intangible and other assets	(154		)	(930		)
Proceeds from sale or maturity of marketable securities	—			303
Net cash used in investing activities	(5,258		)	(6,769		)
Cash flows from financing activities:
Repayment of long-term debt	(1,250		)	—
Payment of contingent consideration previously established in purchase accounting	(2,100		)	(950		)
Proceeds from exercise of stock options and employee stock purchase plan	959			678
Net cash used in financing activities	(2,391		)	(272		)
Effect of exchange rate changes on cash and cash equivalents	—			4
Increase (decrease) in cash and cash equivalents	(2,297		)	263
Cash and cash equivalents at beginning of period	16,105			21,802
Cash and cash equivalents at end of period	$	13,808		$	22,065
Supplemental disclosure of non-cash investing and financing activities:
Contractual obligations for acquisition of intangibles and business	$	—		$	4,970
Contractual obligations for acquisition of fixed assets	$	—		$	2,663

The accompanying notes are an integral part of these financial statements.

6

AngioDynamics, Inc. and Subsidiaries

CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY

(unaudited)

(in thousands of dollars, except share data)

	Common Stock			Additional paid in capital		Retained earnings		Accumulated other comprehensive loss			Treasury Stock
	Shares	Amount									Shares		Amount			Total
Balance at May 31, 2014	35,442,004	$	353	$	508,354	$	31,501	$	(1,269	)	(142,305	)	$	(2,104	)	$	536,835
Net income						470										470
Exercise of stock options	17,008	1		205												206
Purchase of common stock under ESPP	62,574	1		750												751
Issuance of performance shares	124,905	1														1
Stock based compensation				1,395												1,395
Other comprehensive income, net of tax								26								26
Balance at August 31, 2014	35,646,491	$	356	$	510,704	$	31,971	$	(1,243	)	(142,305	)	$	(2,104	)	$	539,684

The accompanying notes are an integral part of these financial statements.

7

AngioDynamics, Inc. and Subsidiaries

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

NOTE A – CONSOLIDATED FINANCIAL STATEMENTS

The consolidated balance sheet as of August 31, 2014, the consolidated statement of stockholders’ equity and consolidated statement of cash flows for the three months ended August 31, 2014, the consolidated statements of income and the consolidated statements of comprehensive income for the three months ended August 31, 2014 and 2013 have been prepared by us without audit. The consolidated balance sheet as of May 31, 2014 was derived from audited consolidated financial statements but does not include all disclosures required by accounting principles generally accepted in the United States of America. In the opinion of management, all adjustments (which include only normal recurring adjustments) necessary to state fairly the financial position, changes in stockholders’ equity and comprehensive income, results of operations and cash flows as of and for the period ended August 31, 2014 (and for all periods presented) have been made.

Certain information and footnote disclosures, normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted. It is suggested that these unaudited interim consolidated financial statements be read in conjunction with the financial statements and notes thereto included in the Annual Report on Form 10-K for the fiscal year ended May 31, 2014, as revised. Our most significant accounting policies are disclosed in Note A to the consolidated financial statements included in the aforementioned Form 10-K for the fiscal year ended May 31, 2014. The results of operations in the fiscal periods ended August 31, 2014 and 2013 are not necessarily indicative of the operating results for the respective full fiscal years.

The unaudited interim consolidated financial statements for the three months ended August 31, 2014 and August 31, 2013 include the accounts of AngioDynamics, Inc. and its wholly owned subsidiaries, collectively, the “Company”. All intercompany balances and transactions have been eliminated.

During the financial closing process for the first quarter of fiscal year 2015, the Company determined that financial management had incorrectly accounted for certain asset, liability and income statement balances, beginning in 2011. The Company has identified amounts and concluded that they were not material individually or in the aggregate to any of its previously issued annual and interim financial statements. Although management has determined the amounts individually and in the aggregate are not material to prior periods, in accordance with authoritative accounting literature on considering the effects of misstatements in prior years when quantifying misstatements in the current year, the financial statements included herein have been adjusted to correct for the impact of these items. Refer to Note P for further details.

NOTE B – ACQUISITIONS

Acquisition of Clinical Devices

On August 15, 2013 we acquired all the outstanding shares of capital stock of Clinical Devices, B.V., exclusive distributor of our fluid management products in the Netherlands. The stock purchase agreement provided for the payment of $3.7 million in cash at closing, which was subject to a working capital adjustment and $400,000 holdback, plus future earn out consideration payable in cash. Earn out consideration was based on our net sales of the fluid management products during the five quarters following the closing as well as milestone payments for achieving regulatory approvals of certain in process research and development for a next-generation tip location technology. The holdback and net sales amounts were paid in September 2014. The total purchase consideration of $8.7 million includes an upfront payment and the estimated fair value of contingent consideration of $5.0 million.

Goodwill recorded as a result of the acquisition was approximately $4.3 million and is not deductible for tax purposes. Intangible assets acquired, other than goodwill, totaled approximately $5.1 million, of which $3.6 million has been identified as in-process research and development (10-year estimated useful life), $1.4 million as customer relationships (15-year estimated useful life) and $70,000 as trademarks (5-year estimated useful life). We also recorded a deferred tax liability of $1.2 million.

The acquisition has been accounted for as a purchase and, accordingly, we have included the results of operations in the financial statements effective August 15, 2013. The pro forma effects of the acquisition on our income statement and balance sheet were not material.

8

NOTE C – INVENTORIES

Inventories are stated at lower of cost (using the first-in, first-out method) or market. As of August 31, 2014 and May 31, 2014, inventories consisted of the following:

	Aug 31, 2014		May 31, 2014
			As revised
	(in thousands)
Raw materials	$	29,696	$	24,734
Work in process	12,677		11,992
Finished goods	28,048		24,508
Inventories	$	70,421	$	61,234

NOTE D – GOODWILL AND INTANGIBLE ASSETS

Intangible assets other than goodwill and indefinite lived intangible assets are amortized over their estimated useful lives, which range between three and fifteen years, on either a straight-line basis or proportunately to the benefit being realized. We periodically review the estimated useful lives of our intangible assets and review such assets for impairment, based on estimated future cash flows, whenever events or changes in circumstances indicate that the carrying value of the assets may not be recoverable. If an intangible asset is considered to be impaired, the amount of the impairment will equal the excess of the carrying value over the fair value of the asset.

Goodwill and intangible assets that have indefinite useful lives are not amortized, but rather, are tested for impairment annually or more frequently if impairment indicators arise. Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in each business combination. Goodwill and intangible assets have been recorded at either incurred or allocated costs based on respective fair market values at the date of acquisition.

For goodwill, the impairment test requires a comparison of the estimated fair value, based on future cash flows, of the reporting unit to which the goodwill is assigned to the sum of the carrying value of the assets and liabilities of that unit. If the sum of the carrying value of the assets and liabilities of a reporting unit exceeds the fair value of the reporting unit, the carrying value of the reporting unit’s goodwill is reduced to its implied fair value through an adjustment to the goodwill balance, resulting in an impairment charge.

Adjustments to goodwill for the three months ended August 31, 2014 are as follows (in thousands of dollars):

	As revised
Balance, May 31, 2014	$	360,473
	—
Balance, August 31, 2014	$	360,473

As of August 31, 2014 and May 31, 2014, intangible assets consisted of the following :

9

	August 31, 2014
	Gross carrying value		Accumulated amortization			Net carrying value		Weighted avg useful life
	(in thousands)							(years)
Product technologies	$	150,334	$	(35,173	)	$	115,161	8.8
Customer relationships	86,579		(39,308		)	47,271		9.1
Trademark-NAMIC	28,600		—			28,600		Indefinite
Licenses	7,890		(5,342		)	2,548		8.3
Trademarks	6,345		(2,085		)	4,260		6.6
In-process R&D acquired	3,600		—			3,600		Indefinite
Distributor relationships	900		(900		)	—		3.0
	$	284,248	$	(82,808	)	$	201,440

	May 31, 2014
	Gross carrying value		Accumulated amortization			Net carrying value		Weighted avg useful life
	(in thousands)							(years)
Product technologies	$	150,298	$	(32,930	)	$	117,368	10.2
Customer relationships	86,645		(37,848		)	48,797		11.9
Trademark-NAMIC	28,600		—			28,600		Indefinite
In process R&D acquired	3,600		—			3,600		Indefinite
Licenses	7,639		(5,211		)	2,428		8.4
Trademarks	6,345		(1,882		)	4,463		8.0
Distributor relationships	900		(900		)	—		3.0
	$	284,027	$	(78,771	)	$	205,256

NOTE E – ACCRUED LIABILITIES

As of August 31, 2014 and May 31, 2014, accrued liabilities consisted of the following:

	Aug 31, 2014		May 31, 2014
			As revised
	(in thousands)
Payroll and related expenses	$	7,595	$	8,224
Royalties	2,909		2,620
Accrued severance	1,614		765
Deferred revenue	190		200
Sales and franchise taxes	1,400		1,327
Interest rate swap liability	375		555
Other	3,617		2,961
Total	$	17,700	$	16,652

NOTE F – LONG TERM DEBT

On September 19, 2013, we entered into a Credit Agreement (the “Credit Agreement”) with the lenders party thereto, JPMorgan Chase Bank, N.A., as administrative agent, Bank of America, N.A. and Keybank National Association as co-syndication agents, and J.P. Morgan Securities LLC, Merrill Lynch, Pierce, Fenner & Smith Incorporated and Keybank National Association as joint bookrunners and joint lead arrangers.

10

The Credit Agreement provides for a $100 million senior secured term loan facility (“Term Loan”) and a $100 million senior secured revolving credit facility, which includes up to a $20 million sublimit for letters of credit and a $5 million sublimit for swingline loans (the “Revolving Facility”, and together with the Term Loan, the “Facilities”).

The proceeds of the Revolving Facility may be used for general corporate purposes of AngioDynamics and its subsidiaries. The Facilities have a five year maturity. The Term Loan has a quarterly repayment schedule equal to 5%, 5%, 10%, 15% and 65% of its principal amount in years one through five. Interest on both the Term Loan and Revolving Facility will be based on a base rate or Eurodollar rate plus an applicable margin which increases as our total leverage ratio increases, with the base rate and Eurodollar rate having ranges of 0.50% to 1.25% and 1.5% to 2.25% respectively. After default, the interest rate may be increased by 2.0%. The Revolving Facility will also carry a commitment fee of 0.2% to 0.35% per annum on the unused portion.

Our obligations under the Facilities are unconditionally guaranteed, jointly and severally, by our material direct and indirect domestic subsidiaries (the “Guarantors”). All obligations of AngioDynamics and the Guarantors under the Facilities are secured by first priority security interests in substantially all of the assets of AngioDynamics and the Guarantors.

We have entered into an interest rate swap agreement, (the “Swap Agreement”), with an initial notional amount of $100 million, to limit the effect of rising of interest rates. The Swap Agreement, which qualified for hedge accounting under authoritative guidance, was a contract to exchange floating interest rate payments for fixed interest rate payments on the outstanding balance of the loan over the life of the agreement without the exchange of the underlying notional amounts. The Swap Agreement provides for a fixed rate of 0.74% above the applicable rate provided for in the Credit Agreement.

On September 19, 2013, we borrowed $100 million under the Term Facility and approximately $41.4 million under the Revolving Facility to repay the Former Credit Agreement. As of August 31, 2014, $95 million and $46.4 million were outstanding under the Term Facility and Revolving Facility, respectively. The Credit Agreement includes customary representations, warranties and covenants, and acceleration, indemnity and events of default provisions, including, among other things, two financial covenants. The first financial covenant requires us to maintain, as of the end of each of our fiscal quarters, a ratio of consolidated EBITDA minus consolidated capital expenditures to consolidated interest expense paid or payable in cash plus scheduled principal payments in respect of indebtedness under the Credit Agreement of not less than 1.35 to 1.00. The second financial covenant requires us to maintain, as of the end of each of our fiscal quarters, a ratio of consolidated total indebtedness to consolidated EBITDA of not greater than 3.75 to 1.00. We were in compliance with both covenants as of August 31, 2014.

NOTE G – INCOME TAXES

The following table presents the components of income tax expense(benefit) for the three months ended August 31, 2014 and 2013 (in thousands of dollars):

	Three Months Ended
	Aug 31, 2014			Aug 31, 2013
				As revised
Income tax expense (benefit) based on income (loss) from continuing operations at estimated tax rates of 42.2% in 2014 and 37.4% in 2013	$	598		$	(211	)
Discrete tax expense (benefit):
Adjustment for elimination of the ASC 718 APIC pool	354			—
Adjustments to prior period tax liabilities	(4		)	21
Total income tax expense (benefit)	$	948		$	(190	)

The first quarter estimated effective tax rate prior to discrete items was 42.2% in 2014, as compared to 37.4% for the same period in 2013. The change in the rate is primarily due to the December 31, 2013 expiration of the research and development tax credit. Our ASC 718 APIC pool was depleted in the quarter ended February 28, 2014. Prior to its depletion, the APIC pool was reduced when share-based compensation cost previously recognized by us was greater than the deduction allowed for income tax purposes based on the price of our common stock on the date of exercise or vesting. Due to its depletion we recorded a discrete tax expense of $354 thousand in the first quarter of fiscal 2015.

11

We currently believe that we will generate taxable income in the future sufficient to realize the benefit of all of our deferred tax assets which consisted primarily of net operating loss carry forwards recorded in business acquisitions. However, some or all of these deferred tax assets could expire unused if we are unable to generate taxable income in the future sufficient to utilize them. We will need to generate $10.0 million of taxable income each year from 2015 to 2023 and then $6.5 million per year until 2033 in order to utilize all of our net operating loss carry forwards. If it becomes more likely than not that our deferred tax assets will expire unused, a valuation allowance will be recorded, which may significantly increase our income tax expense, and therefore adversely affect our results of operations in the period in which it is recorded.

NOTE H - SHARE-BASED COMPENSATION

We have two stock-based compensation plans that provide for the issuance of up to approximately 5.8 million shares of common stock. The 2004 Stock and Incentive Award Plan (the "2004 Plan") provides for the grant of incentive options to our employees and for the grant of non-statutory stock options, restricted stock, stock appreciation rights, performance units, performance shares and other incentive awards to our employees, directors and other service providers. We also have an employee stock purchase plan.

For the quarters ended August 31, 2014 and 2013, share-based payment expense was $1.4 million and $1.2 million, respectively.

In the first quarter of fiscal year 2015 and 2014, the company granted stock options and restricted stock units under the 2004 Plan to certain employees and members of the Board of Directors. Stock option awards are valued using the Black-Scholes option-pricing model and then amortized on a straight-line basis over the requisite service period of the award. Restricted stock unit awards are valued based on the closing trading value of our shares on the date of grant and then amortized on a straight-line basis over the requisite service period of the award.

In the first quarter of fiscal year 2015, the company granted performance share awards under the 2004 Plan to certain employees. The awards may be earned by achieving relative performance levels over the three year requisite service period. The performance criteria are based on the total shareholder return ("TSR") of the company's common stock relative to the TSR of the common stock of a pre-defined industry peer-group. The fair value of these awards are based on the closing trading value of our shares on the date of grant and use a Monte Carlo simulation model.

As of August 31, 2014, there were $15.1 million of unrecognized compensation expenses related to share-based payment arrangements. These costs are expected to be recognized over a weighted-average period of approximately four years. The company has sufficient shares to satisfy expected share-based payment arrangements.

NOTE I – EARNINGS PER SHARE

Basic earnings per share are based on the weighted average number of common shares outstanding without consideration of potential common stock. In addition, diluted earnings per share include the dilutive effect of potential common stock consisting of stock options and restricted stock units, provided that the inclusion of such securities is not antidilutive. In periods with a net loss, stock options and restricted stock units are not included in the computation of basic loss per share as the impact would be anti-dilutive.

The following table reconciles basic to diluted weighted-average shares outstanding for the three months ended August 31, 2014 and 2013 (in thousands):

	Three Months Ended
	Aug 31, 2014	Aug 31, 2013
Basic	35,367	34,950
Effect of dilutive securities	518	—
Diluted	35,885	34,950

12

Excluded from the calculation of diluted earnings per common share are stock options issued to employees and non-employees to purchase 0.9 million shares of common stock for the three months ended August 31, 2014, as their inclusion would be antidilutive. For the three months ended August 31, 2013, options and restricted stock awards issued to employees and non-employees to purchase 2.8 million shares of common stock were also excluded as their inclusion would have been antidilutive.

NOTE J – SEGMENT AND GEOGRAPHIC INFORMATION

We consider our business to be a single operating segment entity engaged in the development, manufacture and sale on a global basis of medical devices for vascular access, surgery, peripheral vascular disease and oncology. Our chief operating decision maker (CEO) evaluates the various global product portfolios on a net sales basis. Executives reporting to the CEO include those responsible for operations and supply chain management, research and development, sales, franchise marketing and certain corporate functions. The CEO evaluates profitability, investment and cash flow metrics on a consolidated worldwide basis due to shared infrastructure and resources.

The table below summarizes net sales by product category (in thousands of dollars):

	Three Months Ended
	Aug 31, 2014		Aug 31, 2013
			As revised
Net sales
Peripheral Vascular	$	47,266	$	45,546
Vascular Access	26,512		25,282
Oncology/Surgery	12,370		11,167
Supply Agreement	1,183		1,649
Total	$	87,331	$	83,644

The table below presents net sales by geographic area based on external customer location (in thousands of dollars):

	Three Months Ended
	Aug 31, 2014		Aug 31, 2013
			As revised
Net sales
United States	$	68,559	$	67,167
International	17,589		14,828
Supply Agreement	1,183		1,649
Total	$	87,331	$	83,644

NOTE K – FAIR VALUE

Our financial instruments include cash and cash equivalents, accounts receivable, marketable securities, accounts payable, interest rate swap agreement and contingent earn outs. The carrying amount of cash and cash equivalents, accounts receivable, marketable securities and accounts payable approximates fair value due to the immediate or short-term maturities. The interest rate swap agreement has been recorded at its fair value based on a valuation received from an independent third party. The contingent earn out has been recorded at fair value using the income approach.

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. This policy establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The policy describes three levels of inputs that may be used to measure fair value which are provided in the table below.

13

Level 1 Quoted prices in active markets for identical assets or liabilities. Level 1 assets include bank time deposits, money market funds, mutual funds and U.S. Treasury securities that are traded in an active exchange market.

Level 2 Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 2 assets include US government securities and corporate bonds. When quoted market prices are unobservable, we obtain pricing information from an independent pricing vendor. The pricing vendor uses various pricing models for each asset class that are consistent with what other market participants would use. The inputs and assumptions to the model of the pricing vendor are derived from market observable sources including: benchmark yields, reported trades, broker/dealer quotes, issuer spreads, benchmark securities, bids, offers, and other market-related data. Since many fixed income securities do not trade on a daily basis, the methodology of the pricing vendor uses available information as applicable such as benchmark curves, benchmarking of like securities, sector groupings, and matrix pricing. The pricing vendor considers all available market observable inputs in determining the evaluation for a security. Thus, certain securities may not be priced using quoted prices, but rather determined from market observable information. These investments are included in Level 2 and primarily comprise our portfolio of corporate and government fixed income securities. Additionally included in Level 2 are interest rate swap agreements which are valued using a mid-market valuation model.

Level 3 Unobservable inputs that are supported by little or no market activity and are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. This category currently includes the auction rate securities where independent pricing information was not able to be obtained and the contingent earn out. Our investments in auction-rate securities were classified as Level 3 as quoted prices were unavailable since these auction rate securities issued by New York state and local government authorities failed auction. Due to limited market information, we utilized a discounted cash flow (“DCF”) model to derive an estimate of fair value for all periods presented. The assumptions used in preparing the DCF model included estimates with respect to the amount and timing of future interest and principal payments, forward projections of the interest rate benchmarks, the probability of full repayment of the principal considering the credit quality and guarantees in place, and the rate of return required by investors to own such securities given the current liquidity risk associated with auction-rate securities. The contingent earn outs were valued utilizing a discounted cash flow method as detailed below.

14

The following tables provide information by level for assets and liabilities that are measured at fair value on a recurring basis as of August 31, 2014 and May 31, 2014 (in thousands of dollars):

	Fair Value Measurements using inputs considered as:						Fair Value at August 31, 2014
	Level 1		Level 2		Level 3
Financial Assets
Cash equivalents
Money market funds	$	445	$	—	$	—	$	445
Total	$	445	$	—	$	—	$	445
Marketable securities
U.S. government agency obligations	$	—			$	1,670	$	1,670
Total	—		—		1,670		1,670
Total Financial Assets	$	445	$	—	$	1,670	$	2,115
Financial Liabilities
Interest rate swap agreements	$	—	$	375	$	—	$	375
Contingent liability for acquisition earn out	—		—		66,032		66,032
Total Financial Liabilities	$	—	$	375	$	66,032	$	66,407
	Fair Value Measurements using inputs considered as:						Fair Value at May 31, 2014
	Level 1		Level 2		Level 3
Financial Assets							As revised
Cash equivalents
Money market funds	$	445	$	—	$	—	$	445
Total	$	445	$	—	$	—	$	445
Marketable securities
U.S. government agency obligations	—		—		1,809		1,809
Total	—		—		1,809		1,809
Total Financial Assets	$	445	$	—	$	1,809	$	2,254
Financial Liabilities
Interest rate swap agreements	$	—	$	555	$	—	$	555
Contingent liability for acquisition earn out	—		—		67,331		67,331
Total Financial Liabilities	$	—	$	555	$	67,331	$	67,886

There were no transfers in and out of Level 1, 2 and 3 measurements for the three months ended August 31, 2014.

15

The table below presents the components of Level 3 fair value instruments as of August 31, 2014 (in thousands of dollars):

	Financial Assets			Financial Liabilities
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)			Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
				As revised
Balance, May 31, 2014	$	1,809		$	67,331
Total gains or losses (realized/unrealized):
Earnings revaluation expense - included in earnings	—			801
Included in other comprehensive income	(139		)	—
Contingent consideration payments	—			(2,100		)
Balance, August 31, 2014	$	1,670		$	66,032

Contingent Liabilities for Acquisition Earn Outs

Certain of our business combinations involve the potential for the payment of future contingent consideration upon the achievement of certain product development milestones or various other performance conditions. Payment of the additional consideration is generally contingent on the acquired company reaching certain performance milestones, including attaining specified revenue levels or product development targets. Contingent consideration is recorded at the estimated fair value of the contingent payments on the acquisition date. The fair value of the contingent milestone consideration is remeasured at the estimated fair value at each reporting period with the change in fair value recognized as income or expense within change in fair value of contingent consideration in the consolidated statements of income. We measure the initial liability and remeasure the liability on a recurring basis using Level 3 inputs as defined under authoritative guidance for fair value measurements.

Contingent consideration liabilities fair value is determined using a discounted cash flow model applied to projected net sales, using probabilities of payment and projected payment dates. Projected net sales are based on our internal projections and extensive analysis of the target market and the sales potential. Increases or decreases in any valuation inputs in isolation may result in a significantly lower or higher fair value measurement in the future.

The recurring Level 3 fair value measurements of the contingent consideration liabilities include the following significant unobservable inputs as of August 31, 2014 (in thousands of dollars):

	Fair value at		Valuation
	Aug 31, 2014		Technique	Unobservable Input	Range
Revenue based payments	$	62,596	Discounted cash flow	Discount rate	4%-10%
				Probability of payment	75-100%
				Projected fiscal year of payment	2015 - 2022
Milestone based payments	3,436		Discounted cash flow	Discount rate	16%-20%
				Probability of payment	75-100%
				Projected fiscal year of payment	2015 - 2017
Total	$	66,032

At August 31, 2014, the estimated potential amount of undiscounted future contingent consideration that we expect to pay as a result of all completed acquisitions is approximately $77.0 million. The milestones associated with the contingent consideration must be reached in future periods ranging from fiscal years 2015 to 2022 in order for the consideration to be paid.

The fair value of contingent milestone payments associated with the acquisitions was remeasured as of August 31, 2014 and $55.1 million was reflected in “Contingent consideration, net of current portion” and $10.9 million was reflected in “Current portion of contingent consideration” on the consolidated balance sheet.

16

The following table provides a reconciliation of the beginning and ending balances of contingent milestone payments measured at fair value that used significant unobservable inputs (Level 3) (in thousands of dollars):

		As revised
Beginning balance -	May 31, 2014	$	67,331
Contingent payments		(2,100		)
Earnings revaluation expense		801
Ending balance -	August 31, 2014	$	66,032

NOTE L – MARKETABLE SECURITIES

Marketable securities, which are principally government agency bonds, auction rate investments and corporate commercial paper, are classified as “available-for-sale securities” in accordance with authoritative guidance issued by FASB and are reported at fair value, with unrealized gains and losses excluded from operations and reported as accumulated other comprehensive income (loss), net of the related tax effects, in stockholders’ equity. Cost is determined using the specific identification method. We hold investments in auction rate securities in order to generate higher than typical money market rate investment returns. Auction rate securities typically are high credit quality, generally achieved with municipal bond insurance. Credit risks are eased by the historical track record of bond insurers, which back a majority of this market. Sell orders for any security traded through an auction process could exceed bids and, in such cases, the auction fails and we may be unable to liquidate our position in the securities in the near term. As of August 31, 2014 and May 31, 2014, we had $1.7 million and $1.8 million, respectively, in investments in two auction rate securities issued by New York state and local government authorities that failed auctions. The authorities are current in their interest payments on the securities.

As of August 31, 2014 and May 31, 2014, marketable securities consisted of the following (in thousands of dollars):

As of August 31, 2014	Amortized cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available-for-sales securities
U.S. government agency obligations	$	1,825	$	—	$	(155	)	$	1,670
	$	1,825	$	—	$	(155	)	$	1,670

As of May 31, 2014	Amortized cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available-for-sales securities
U.S. government agency obligations	$	1,825	$	—	$	(16	)	$	1,809
	$	1,825	$	—	$	(16	)	$	1,809

NOTE M – COMMITMENTS AND CONTINGENCIES    

Legal Proceedings

The Company is involved in various legal proceedings, including commercial, intellectual property, product liability, regulatory and environmental matters of a nature considered normal for its business. The Company accrues for amounts related to these matters if it is probable that a liability has been incurred, and an amount can be reasonably estimated. The Company discloses such matters when there is at least a reasonable possibility that a material loss may have been incurred. However, the Company cannot predict the outcome of any litigation or the potential for future litigation

17

AngioDynamics v. biolitec

On January 2, 2008, we commenced an action in the United States District Court for the Northern District of New York entitled AngioDynamics, Inc. v. biolitec, Inc. In this action, we sought judgment against biolitec for defense and indemnification in two lawsuits which we previously settled. Our claims arise out of a Supply and Distribution Agreement (“SDA”) entered into with biolitec on April 1, 2002. On September 27, 2011, the U.S. District Court granted key portions of our motion for summary judgment in our legal case against biolitec. The Court also dismissed biolitec’s counterclaims against us. The court denied one portion of our summary judgment motion, which sought to recover additional costs from biolitec, leaving this for adjudication at trial. On November 8, 2012, the Court granted partial judgment to us in the amount of $23.2 million. Biolitec appealed this judgment. On August 23, 2013, the U.S. Court of Appeals for the Second Circuit dismissed biolitec’s appeal.

In October 2009, we commenced an action in the United States District Court for the District of Massachusetts entitled AngioDynamics, Inc. v. biolitec AG and Wolfgang Neuberger. The Complaint in this action was amended in March 2010. This action seeks to recover against biolitec, Inc.’s parent entities and CEO for tortiously interfering with biolitec, Inc.’s contractual obligation to defend and indemnify us, and also seeks to pierce the corporate veil of biolitec, Inc. and to invalidate certain alleged fraudulent transfers in order to hold biolitec, Inc.’s parent entities jointly and severally liable for the alleged breach of the SDA. On September 13, 2012, the Massachusetts Court granted our request for a preliminary injunction prohibiting the downstream merger of biolitec AG with its Austrian subsidiary. On April 1, 2013, the U.S. Court of Appeals for the First Circuit affirmed the preliminary injunction. On January 14, 2014, the District Court entered judgment in our favor as to liability. On March 18, 2014, the District Court entered judgment in our favor against Biolitec AG, Biomed Technology Holdings, Ltd., and Wolfgang Neuberger, jointly and severally, in the amount of $74.9 million. The defendants have appealed this judgment.

August 29, 2013, we became co-plaintiffs in an adversary proceeding in the United States Bankruptcy Court for the District of New Jersey entitled Cyganowski, Trustee, et al. v. Biolitec U.S., Inc., et al. In this action, we assert claims of conversion, unjust enrichment, tortious interference, and unfair competition against various biolitec entities for alleged violation of Bankruptcy Court settlement and sale orders under which we acquired certain assets of Biolitec, Inc. On September 3, 2013, we, along with our co-plaintiff, obtained a temporary restraining order against the defendants in this action. The restraining order is still in place and the Bankruptcy Court is considering our request for permanent injunctive relief..

C.R. Bard, Inc. v. AngioDynamics, Inc.

On January 11, 2012, C.R. Bard, Inc. filed a suit in the United States District Court of Utah claiming certain of our implantable port products infringe on patents held by Bard. Bard is seeking unspecified damages and other relief. The Court denied Bard’s motion for pre-trial consolidation with separate actions it filed on the same day against Medical Components, Inc. and Smiths Medical ASD, Inc., but had asked for supplemental briefing on the issue of whether to conduct a common Markman hearing. Meanwhile, we filed petitions for reexamination in the US Patent and Trademark Office which seek to invalidate all three patents asserted in the litigation. Our petitions have been granted and 40 of 41 patent claims have been and remain rejected. The Patent Office has issued a Final Rejection of all the claims subject to reexamination and Bard has filed appeals. The parties are currently in the midst of the briefing process for these appeals. The case has been stayed pending final resolution of the PTO process. We believe these claims are without merit and intend to defend them vigorously. We have not recorded an expense related to the outcome of this litigation because it is not yet possible to determine if a potential loss is probable nor reasonably estimable.

BTG International, Inc.

We received a subpoena from the U.S. Department of Justice (the “DOJ”) requesting documents in relation to a purported criminal investigation the DOJ is conducting regarding BTG International, Inc.’s LC Bead^® product beginning in 2003.  RITA Medical Systems and AngioDynamics, Inc., after its acquisition of RITA, was the exclusive distributor of LC Beads in the United States from 2006 through December 31, 2011.  We are cooperating fully with this investigation and at this time are unable to predict its scope, duration or outcome.

18

NOTE N – RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS

In May 2014, the FASB and the International Accounting Standards Board (“IASB”) issued their final standard on revenue from contracts with customers. The standard, issued as an ASU by the FASB and as International Financial Reporting Standards 15 by the IASB, outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle of the revenue model is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU is effective for the Company in its first quarter beginning January 1, 2017 and is not expected to have a material impact on the Company’s consolidated financial statements.

In June 2014, the FASB issued an ASU that clarified that entities should treat performance targets that can be met after the requisite service period of a share-based payment award as performance conditions that affect vesting. Therefore, an entity would not record compensation expense related to an award for which transfer to the employee is contingent on the entity’s satisfaction of a performance target until it becomes probable that the performance target is met. This ASU is effective for the Company in its first quarter beginning January 1, 2016 and is not expected to have a material impact on the Company’s consolidated financial statements.

NOTE O – RESTRUCTURING

During the three months ended August 31, 2014 we initiated a restructuring of finance, R&D and S&M organizations to improve our profitability. As part of the restructuring, we recorded $1.1 million of severance expense which is included in “Acquisition, restructuring and other items, net” in the statements of income.

NOTE P – IMMATERIAL ERROR CORRECTIONS

During the financial closing process for the first quarter of fiscal year 2015, the Company determined that financial management had incorrectly accounted for certain asset, liability and income statement balances, beginning in 2011. The Company has identified amounts and concluded that they were not material individually or in the aggregate to any of its previously issued annual and interim financial statements. Although management has determined the amounts individually and in the aggregate are not material to prior periods, in accordance with authoritative accounting literature on considering the effects of misstatements in prior years when quantifying misstatements in the current year, the financial statements included herein have been adjusted to correct for the impact of these items.

The Company has corrected the relevant financial information from previous reporting periods contained in these financial statements. The immaterial error corrections identified were primarily related to our failure to recognize the expense associated with prepaid and other assets in accordance with the underlying contractual terms (cumulative impact of approximately $1.2 million) and depreciation expense (cumulative impact of approximately $0.4 million), and other individually immaterial items. The impacts of these revisions are shown in the tables below:

	Three months ended August 31, 2013
	As previously reported			Adjustments			As revised
Net sales	$	83,579		$	65		$	83,644
Cost of sales	41,097			(33		)	41,064
Gross profit	42,482			98			42,580
Total operating expenses	41,195			(17		)	41,178
Operating income	1,287			115			1,402
Total other income (expenses)	(1,934		)	(31		)	(1,965		)
Income (loss) before taxes	(647		)	84			(563		)
Income tax benefit (expense)	221			(31		)	190
Net income (loss)	(426		)	53			(373		)
Total comprehensive income (loss), net of tax	(155		)	53			(102		)

19

	Three months ended November 30, 2013
	As previously reported			Adjustments			As revised
Net sales	$	88,616		$	(45	)	$	88,571
Cost of sales	43,686			—			43,686
Gross profit	44,930			(45		)	44,885
Total operating expenses	43,356			88			43,444
Operating income	1,574			(133		)	1,441
Total other income (expense)	(1,660		)	(131		)	(1,791		)
Income (loss) before taxes	(86		)	(264		)	(350		)
Income tax benefit (expense)	(13		)	102			89
Net income (loss)	(99		)	(162		)	(261		)
Total comprehensive income (loss), net of tax	(358		)	(162		)	(520		)

	Six months ended November 30, 2013
	As previously reported			Adjustments			As revised
Net sales	$	172,195		$	20		$	172,215
Cost of sales	84,783			(33		)	84,750
Gross profit	87,412			53			87,465
Total operating expenses	84,551			71			84,622
Operating income	2,861			(18		)	2,843
Total other income (expense)	(3,594		)	(162		)	(3,756		)
Income (loss) before taxes	(733		)	(180		)	(913		)
Income tax benefit (expense)	208			71			279
Net income (loss)	(525		)	(109		)	(634		)
Total comprehensive income (loss), net of tax	(513		)	(109		)	(622		)

	Three months ended February 28, 2014
	As previously reported			Adjustments			As revised
Net sales	$	88,195		$	(45	)	$	88,150
Cost of sales	43,277			80			43,357
Gross profit	44,918			(125		)	44,793
Total operating expenses	38,066			214			38,280
Operating income	6,852			(339		)	6,513
Total other income (expense)	(1,985		)	15			(1,970		)
Income (loss) before taxes	4,867			(324		)	4,543
Income tax benefit (expense)	(176		)	148			(28		)
Net income (loss)	4,691			(176		)	4,515
Total comprehensive income (loss), net of tax	4,869			(176		)	4,693

20

	Nine months ended February 28, 2014
	As previously reported			Adjustments			As revised
Net sales	$	260,390		$	(25	)	$	260,365
Cost of sales	128,060			47			128,107
Gross profit	132,330			(72		)	132,258
Total operating expenses	122,617			285			122,902
Operating income	9,713			(357		)	9,356
Total other income (expense)	(5,579		)	(147		)	(5,726		)
Income (loss) before taxes	4,134			(504		)	3,630
Income tax benefit (expense)	32			219			251
Net income (loss)	4,166			(285		)	3,881
Total comprehensive income (loss), net of tax	4,356			(285		)	4,071

	Three months ended May 31, 2014
	As previously reported			Adjustments			As revised
Net sales	$	94,065		$	(5	)	$	94,060
Cost of sales	46,534			116			46,650
Gross profit	47,531			(121		)	47,410
Total operating expenses	43,796			30			43,826
Operating income	3,735			(151		)	3,584
Total other income (expense)	(1,489		)	15			(1,474		)
Income (loss) before taxes	2,246			(136		)	2,110
Income tax benefit (expense)	(3,324		)	(1		)	(3,325		)
Net income (loss)	(1,078		)	(137		)	(1,215		)
Total comprehensive income (loss), net of tax	(1,003		)	(137		)	(1,140		)

	Year ended May 31, 2014
	As previously reported			Adjustments			As revised
Net sales	$	354,455		$	(30	)	$	354,425
Cost of sales	174,594			163			174,757
Gross profit	179,861			(193		)	179,668
Total operating expenses	166,413			315			166,728
Operating income	13,448			(508		)	12,940
Total other income (expense)	(7,068		)	(132		)	(7,200		)
Income (loss) before taxes	6,380			(640		)	5,740
Income tax benefit (expense)	(3,292		)	218			(3,074		)
Net income (loss)	3,088			(422		)	2,666
Total comprehensive income (loss), net of tax	3.353			(422		)	2.931

21

	Year ended May 31, 2014
	As previously reported			Adjustments			As revised
Net cash provided by (used in) operating activities	$	25,280		$	(599	)	$	24,681
Net cash provided by (used in) investing activities	(17,047		)	599			(16,448		)
Net cash provided by (used in) financing activities	(14,016		)	—			(14,016		)

	As of May 31, 2014
	As previously reported		Adjustments			As revised
Accounts receivable, net of allowances	$	62,148	$	(180	)	$	61,968
Inventories	61,056		178			61,234
Prepaid expenses and other	5,975		(504		)	5,471
Total current assets	152,228		(506		)	151,722
Property, plant and equipment, net	67,208		(618		)	66,590
Other assets	4,876		(950		)	3,926
Goodwill	360,294		179			360,473
Deferred income taxes, long term	9,767		636			10,403
Total assets	800,150		(1,259		)	798,891
Accrued liabilities	16,762		(110		)	16,652
Current portion of contingent payments	16,341		(3,462		)	12,879
Total current liabilities	72,286		(3,572		)	68,714
Contingent consideration, net of current portion	51,080		3,372			54,452
Total liabilities	262,256		(200		)	262,056
Additional paid-in capital	508,263		91			508,354
Retained earnings	32,651		(1,150		)	31,501
Total stockholders' equity	537,894		(1,059		)	536,835

	Year ended May 31, 2013
	As previously reported			Adjustments			As revised
Net sales	$	342,026		$	(110	)	$	341,916
Cost of sales	173,037			365			173,402
Gross profit	168,989			(475		)	168,514
Total operating expenses	161,895			331			162,226
Operating income	7,094			(806		)	6,288
Total other income (expense)	(7,737		)	(138		)	(7,875		)
Income (loss) before taxes	(643		)	(944		)	(1,587		)
Income tax benefit (expense)	31			345			376
Net income (loss)	(612		)	(599		)	(1,211		)
Total comprehensive income (loss), net of tax	(872		)	(599		)	(1,471		)

22

	Year ended May 31, 2013
	As previously reported			Adjustments			As revised
Net cash provided by (used in) operating activities	$	26,883		$	(231	)	$	26,652
Net cash provided by (used in) investing activities	(22,238		)	—			(22,238		)
Net cash provided by (used in) financing activities	(6,286		)	—			(6,286		)

	As of May 31, 2013
	As previously reported		Adjustments			As revised
Accounts receivable, net of allowances	$	47,791	$	(110	)	$	47,681
Inventories	55,062		17			55,079
Prepaid expenses and other	7,554		(269		)	7,285
Total current assets	141,516		(362		)	141,154
Property, plant and equipment, net	62,650		(259		)	62,391
Other assets	5,559		(651		)	4,908
Intangible assets, net	214,848		(175		)	214,673
Goodwill	355,458		179			355,637
Deferred income taxes, long term	11,007		418			11,425
Total assets	791,584		(850		)	790,734
Accounts payable	24,522		(52		)	24,470
Accrued liabilities	16,426		(70		)	16,356
Total current liabilities	63,437		(122		)	63,315
Total liabilities	264,754		(122		)	264,632
Retained earnings	29,563		(728		)	28,835
Total stockholders' equity	526,830		(728		)	526,102

	Year ended May 31, 2012
	As previously reported			Adjustments			As revised
Net sales	$	221,787		$	130		$	221,917
Cost of sales	95,829			779			96,608
Gross profit	125,958			(649		)	125,309
Total operating expenses	128,920			297			129,217
Operating income	(2,962		)	(946		)	(3,908		)
Total other income (expense)	(2,320		)	806			(1,514		)
Income (loss) before taxes	(5,282		)	(140		)	(5,422		)
Income tax expense (benefit)	188			51			239
Net income (loss)	(5,094		)	(89		)	(5,183		)
Total comprehensive income (loss), net of tax	(5,095		)	(89		)	(5,184		)

	Year ended May 31, 2012
	As previously reported			Adjustments		As revised
Net cash provided by (used in) operating activities	$	11,497		$	105	$	11,602
Net cash provided by (used in) investing activities	(176,360		)	126		(176,234		)
Net cash provided by (used in) financing activities	142,338			—		142,338

23

	As of May 31, 2012
	As previously reported		Adjustments			As revised
Cash and cash equivalents	$	23,508	$	231		$	23,739
Accounts receivable, net of allowances	48,588		(1,685		)	46,903
Prepaid expenses and other	9,826		(23		)	9,803
Total current assets	159,238		(1,477		)	157,761
Property, plant and equipment, net	55,915		(305		)	55,610
Other assets	10,707		(348		)	10,359
Intangible assets, net	147,266		97			147,363
Goodwill	308,912		179			309,091
Deferred income taxes, long term	39,198		73			39,271
Total assets	721,769		(1,781		)	719,988
Accrued liabilities	18,722		(1,652		)	17,070
Total current liabilities	55,422		(1,652		)	53,770
Total liabilities	198,249		(1,652		)	196,597
Retained earnings	30,175		(129		)	30,046
Total stockholders' equity	523,520		(129		)	523,391

	Year ended May 31, 2011
	As previously reported			Adjustments			As revised
Net sales	$	215,750		$	(130	)	$	215,620
Cost of sales	90,047			—			90,047
Gross profit	125,703			(130		)	125,573
Total operating expenses	113,740			(68		)	113,672
Operating income	11,963			(62		)	11,901
Total other income (expenses)	(1,265		)	—			(1,265		)
Income (loss) before taxes	10,698			(62		)	10,636
Income tax expense (benefit)	(2,581		)	22			(2,559		)
Net income (loss)	8,117			(40		)	8,077
Total comprehensive income (loss), net of tax	8,238			(40		)	8,198

	As of May 31, 2011
	As previously reported		Adjustments			As revised
Accounts receivable, net of allowances	$	27,141	$	(130	)	$	27,011
Total current assets	194,305		(130		)	194,175
Deferred income taxes, long term	5,835		22			5,857
Total assets	437,421		(108		)	437,313
Accrued liabilities	13,841		(107		)	13,734
Total current liabilities	25,507		(107		)	25,400
Total liabilities	31,782		(107		)	31,675
Additional paid-in capital	371,393		(13		)	371,380
Retained earnings	35,269		11			35,280
Total stockholders' equity	405,639		(1		)	405,638

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

The following information should be read together with the consolidated financial statements and the notes thereto and other information included elsewhere in this quarterly report on Form 10-Q.

Forward-Looking Statements

This quarterly report on Form 10-Q, including the sections entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements regarding AngioDynamics’ expected future financial position, results of operations, cash flows, business strategy, budgets, projected costs, capital expenditures, products, competitive positions, growth opportunities, plans and objectives of management for future operations, as well as statements that include the words such as “expects,” “reaffirms,” “intends,” “anticipates,” “plans,” “believes,” “seeks,” “estimates,” or variations of such words and similar expressions, are forward-looking statements. These forward looking statements are not guarantees of future performance and are subject to risks and uncertainties. Investors are cautioned that actual events or results may differ from our expectations. Factors that may affect our actual results achieved include, without limitation, our ability to develop existing and new products, future actions by FDA or other regulatory agencies, results of pending or future clinical trials, the results of ongoing litigation, overall economic conditions, general market conditions, market acceptance, foreign currency exchange rate fluctuations, the effects on pricing from group purchasing organizations and competition, as well as our ability to integrate purchased businesses. Other risks and uncertainties include, but are not limited to, the factors described from time to time in our reports filed with the SEC, including our Form 10-K for the fiscal year ended May 31, 2014.

Although we believe that the assumptions underlying the forward-looking statements contained herein are reasonable, any of the assumptions could be inaccurate and, therefore, there can be no assurance that the forward-looking statements included in this quarterly report on Form 10-Q will prove to be accurate. In light of the significant uncertainties inherent in the forward-looking statements included herein, the inclusion of such information should not be regarded as a representation by us or any other person that our objectives and plans will be achieved. Any forward-looking statements are made pursuant to the Private Securities Litigation Reform Act of 1995 and, as such, speak only as of the date made. AngioDynamics disclaims any obligation to update the forward-looking statements. Investors are cautioned not to place undue reliance on these forward-looking statements which speak only as of the date stated, or if no date is stated, as of the date of this document.

Overview

We design, manufacture and sell a wide range of medical, surgical and diagnostic devices used by professional healthcare providers for vascular access, for the treatment of peripheral vascular disease and for use in oncology and surgical settings. Our devices are generally used in minimally invasive, image-guided procedures. Most of our products are intended to be used once and then discarded, or they may be temporarily implanted for short- or long-term use.

We sell our products in the United States through a direct sales force and outside the U.S. through a combination of direct sales and distributor relationships. For the three months ended August 31, 2014 and 2013, approximately 20% and 18%, respectively, of our net sales were from markets outside the United States.

Our sales and profitability growth depends, in part, on the introduction of new and innovative products, together with ongoing enhancements to our existing products. Expansions to our product offerings are created through internal product development, technology licensing and strategic alliances. In recent years we have acquired or developed, and launched several new products, including the AngioVac cannula and circuit, the BioFlo family of products, and the Acculis microwave system, which are all expected to be growth drivers of our business. We recognize the importance of, and intend to continue to make investments in, research and development activities and business development opportunities.

Our ability to further increase our profitability will depend in part on improving gross profit and operating margins. A portion of improved gross margin we expect to deliver through the acquisition, development and sale of innovative products, such as those mentioned above. Additionally, in December 2013 we announced a company-wide operational excellence program designed to create greater efficiencies and drive improved business performance. Further, we anticipate being able to manage increases in our operating expenses at a rate slower than our sales growth to provide further operating margin expansion.

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Immaterial Error Corrections

During the financial closing process for the first quarter of fiscal year 2015, the Company determined that financial management had incorrectly accounted for certain asset, liability and income statement balances, beginning in 2011. The Company has identified amounts and concluded that they were not material individually or in the aggregate to any of its previously issued annual and interim financial statements. Although management has determined the amounts individually and in the aggregate are not material to prior periods, in accordance with authoritative accounting literature on considering the effects of misstatements in prior years when quantifying misstatements in the current year, the financial statements included herein have been adjusted to correct for the impact of these items.

The Company has corrected the relevant financial information from previous reporting periods contained in these financial statements. The immaterial error corrections identified were primarily related to our failure to recognize the expense associated with prepaid and other assets in accordance with the underlying contractual terms (cumulative impact of approximately $1.2 million) and depreciation expense (cumulative impact of approximately $0.4 million), and other individually immaterial items.

New Accounting Pronouncements

Information regarding new accounting pronouncements is included in Note N to our consolidated financial statements in this Quarterly Report on Form 10-Q.

Results of Operations for the Three Months ended August 31, 2014 and August 31, 2013

For the three months ended August 31, 2014, we reported net income of $470 thousand, or $0.01 per diluted share, on net sales of $87.3 million, compared with a net loss of $373 thousand, or $(0.01) per share, on net sales of $83.6 million during the same quarter of the prior year.

The table below presents certain operating data as a percentage of net sales:

	Three Months Ended
	Aug 31, 2014		Aug 31, 2013
			As revised
Net sales	100.0	%	100.0	%
Gross profit	52.5	%	50.9	%
Research and development	7.7	%	8.0	%
Sales and marketing	23.0	%	23.9	%
General and administrative	8.4	%	8.0	%
Amortization of intangibles	4.6	%	4.9	%
Change in fair value of contingent consideration	0.9	%	0.9	%
Acquisition, restructuring and other items, net	3.1	%	2.4	%
Medical device excise tax	1.1	%	1.2	%
Operating income	3.7	%	1.7	%
Other income (expenses)	(2.1	)%	(2.3	)%
Income taxes	1.1	%	(0.2	)%
Net income (loss)	0.5	%	(0.4	)%

Net sales - Net sales are derived from the sale of our products and related freight charges, less discounts and returns. For the three months ended August 31, 2014, net sales increased $3.7 million to $87.3 million when compared to the same period in the prior year. This increase was primarily attributable to increased product sales of the AngioVac; Nanoknife; microwave, and the Bioflo family of products, partially offset by decreased sales of RFA, and products sold through our supply agreement arrangement.

From a product line perspective, Peripheral Vascular sales increased $1.7 million or 3.8% from the prior year period to $47.3 million. This increase was primarily attributable to the AngioVac product line. Vascular Access sales were $26.5 million, an increase of $1.2 million or 4.9% from the prior year period. This increase is attributable to increased sales of our port

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products. Oncology/Surgery sales were $12.4 million, an increase of 10.8% from prior year quarter sales of $11.2 million, primarily due to increased sales of our microwave and NanoKnife products partially offset by decreased RFA sales.

From a geographic perspective, U.S. sales increased $1.4 million or 2.1% during the first three months of fiscal 2015 to $68.6 million when compared to the same period in the prior year. This increase was primarily attributable to increased sales of AngioVac, port products, microwave and NanoKnife products, partially offset by RFA decreases. International sales were $17.6 million in the fiscal first quarter of 2015, an increase of 18.6% from $14.8 million in the comparable prior year period. The increase is attributable to increased sales of fluid management, microwave and Nanoknife. Our supply agreement arrangement, which we do not include in either the U.S. or International geographic sales, declined 28.3% to $1.2 million from $1.6 million in the prior year period.

Changes in sales are driven primarily by increases in volume.

Gross profit - Gross profit consists of net sales less the cost of goods sold, which includes the costs of materials, products purchased from third parties and sold by us, manufacturing personnel, royalties, freight, business insurance, depreciation of property and equipment and other manufacturing overhead. Our gross profit as a percentage of sales increased from 50.9% in the prior year period to 52.5% during the three months ended August 31, 2014. The increase is largely attributable to improved operating efficiencies and mix of products sold.

Research and development expenses - Research and development (“R&D”) expenses include internal and external costs to develop new products, enhance existing products, validate new and enhanced products, manage clinical, regulatory and medical affairs and our intellectual property. For both the three months ended August 31, 2014 and 2013, R&D expenses were $6.7 million. As a percentage of net sales, R&D expenses were 7.7% and 8.0% for the first quarters of fiscal years 2015 and 2014, respectively.

Sales and marketing expenses - Sales and marketing (“S&M”) expenses consist primarily of salaries, commissions, travel and related business expenses, attendance at medical society meetings, product promotions and marketing activities. S&M expenses increased $0.1 million during the three months ended August 31, 2014 to $20.1 million when compared to the same period in the prior year. As a percentage of net sales, S&M expenses decreased to 23.0% in the fiscal first quarter of 2015, from 23.9% for the prior year period.

General and administrative expenses - General and administrative (“G&A”) expenses include executive management, finance and accounting, information technology, human resources, business development, legal, and the administrative and professional costs associated with those activities. G&A expenses increased $0.6 million, or 9.5%, to $7.3 million when compared to the same period in the prior year. G&A expenses increased to 8.4% of net sales from 8.0% in the prior year period. The increase is primarily a result of costs associated with the implementation of our ERP system.

Amortization of intangibles - Amortization of intangibles decreased $0.1 million to $4.0 million during the period.

Change in fair value of contingent consideration - The first quarter of fiscal 2015 included accretion of $0.8 million in the change in fair value of the contingent consideration associated with the Vortex, Microsulis and Clinical Devices acquisitions compared with $0.7 million in the prior year period.

Acquisition, restructuring and other items, net - The first quarter of fiscal 2015 included Acquisition, restructuring and other items, net expenses of $2.7 million compared to $2.0 million in the prior year period, which primarily consisted of $1.1 million of severance expense related to the reorganization of our R&D and S&M workforce, $0.8 million of costs related to our operational excellence program and $0.8 million of litigation expense and other items.

Medical device excise tax - The first quarter of fiscal 2015 and 2014 included $1.0 million of expense attributed to Medical Device Excise Tax enacted into law effective January 1, 2013.

Operating income - During the three months ended August 31, 2014, operating income increased $1.8 million to $3.2 million. As a percentage of sales, operating income was 3.7% and 1.7% for the three months ended August 31, 2014 and 2013, respectively.

Other expenses - Other expenses for the three months ended August 31, 2014 and 2013 were $1.8 million and $2.0 million, respectively.

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Income taxes - Our effective tax rate including discrete items was 67% for the first fiscal quarter of 2015 compared with 34% effective tax rate for the prior year period. The current quarter reflects no benefit from the expired R&D tax credit. In addition, our ASC 718 APIC pool was fully depleted in the quarter ended February 28, 2014. Prior to its depletion, the APIC pool was reduced when share-based compensation cost previously recognized was greater than the deduction allowed for income tax purposes based on the price of our common stock on the date of exercise or vesting. Due to its depletion, we recorded a discrete tax expense of $354 thousand in the three months ended August 31, 2014.

The prior year period reflects a seven month benefit from the R&D tax credit that had previously expired on December 31, 2013 and a benefit from lower tax rates applicable to our foreign operations, partially offset by non-deductible interest expense on contingent payments.

Net income (loss) - For the three months ended August 31, 2014, we reported net income of $0.5 million, compared to a net loss of $0.4 million for the same period in the prior year.

Liquidity and Capital Resources

Our cash and cash equivalents totaled $13.8 million as of August 31, 2014, compared with $16.1 million as of May 31, 2014. Marketable securities totaled $1.7 million and $1.8 million as of August 31, 2014 and May 31, 2014, respectively, and consist of auction rate securities. As of August 31, 2014, total debt was $141 million primarily comprised of short and long-term bank debt. The fair value of contingent milestone payments as of August 31, 2014 was $66 million.

The table below summarizes our cash flows for the three months ended August 31, 2014 and 2013 (in thousands of dollars):

	Three Months Ended
	Aug 31, 2014			Aug 31, 2013
				As revised
Cash provided by (used in):
Operating activities	$	5,352		$	7,300
Investing activities	(5,258		)	(6,769		)
Financing activities	(2,391		)	(272		)
Effect of exchange rate changes on cash and cash equivalents	—			4
Net change in cash and cash equivalents	$	(2,297	)	$	263

Net cash provided by operating activities during the three months ended August 31, 2014 and 2013 was $5.3 million and $7.3 million, respectively. Cash provided by operating activities during the three months ended August 31, 2014, was primarily the result of an increase of $1.5 million in tax deferrals, increases in non cash expenses such as depreciation and amortization and share based compensation in the three month period ended August 31, 2014 compared to the prior year period. During the quarter ended August 31, 2014 we experienced cash outflows due to increased inventories and prepaid expenses coupled with a reduction in accounts payable and accrued liabilities partially offset by a decrease in accounts receivable.

Net cash used in investing activities during the three months ended August 31, 2014 and 2013 was $5.3 million and $6.8 million, respectively. The net cash used in investing activities for the current year period consisted primarily of fixed asset additions. The prior year period use of cash consisted primarily of the Clinical Devices acquisition and fixed asset additions.

Net cash used in financing activities during the three months ended August 31, 2014 and 2013 was $2.4 million and $0.3 million, respectively. The current year period consisted primarily of a scheduled debt payment and payment of contingent consideration related to the acquisition of Microsulis, partially offset by proceeds from the exercise of stock options and purchases related to our employee stock purchase plan.

Our contractual obligations and their effect on liquidity and cash flows have not changed substantially from that disclosed in our Annual Report on Form 10-K for our fiscal year ended May 31, 2014.

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We believe that our current cash and investment balances, together with cash generated from operations and our remaining revolving credit facility capacity of $53.6 million as of August 31, 2014, will provide sufficient liquidity to meet our anticipated needs for capital for at least the next 12 months. If we seek to make significant acquisitions of other businesses or technologies in the future for cash, we may require external financing.

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Item 3. Quantitative and Qualitative Disclosures About Market Risk.

We are exposed to market risk from changes in interest rates on investments and financing that could impact our results of operations and financial position. Although we have entered into interest rate swaps with a bank to limit our exposure to interest rate change on our variable interest rate financings, we do not currently engage in any other hedging or market risk management tools.

Nearly all of our sales have historically been denominated in United States dollars. Although not significant, we transact sales in other currencies, particularly the Euro, GB pound and Canadian dollar. We currently have no significant direct foreign currency exchange risk.

Our excess cash is invested in highly liquid, short-term, investment grade securities with maturities primarily of less than two years. These investments are not held for speculative or trading purposes. Changes in interest rates may affect the investment income we earn on cash, cash equivalents and marketable securities and therefore affect our cash flows and results of operations. We hold investments in auction rate securities (“ARS”) in order to generate higher than typical money market investments. ARS typically are high credit quality, generally achieved with municipal bond insurance. Credit risks are eased by the historical track record of bond insurers, which back a majority of this market. Sell orders for any security traded through an auction process could exceed bids. Such instances are usually the result of a drastic deterioration of issuer credit quality. Should there be a failed auction, we may be unable to liquidate our position in the securities in the near term. We have $1.7 million in investments in two auction rate securities issued by New York state and local government authorities that have failed auctions. The authorities are current in their interest payments on the securities.

We are party to legal actions that arise in the ordinary course of business. (See Note M of Notes to Consolidated Financial Statements for more information related to legal actions.)

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Item 4. Controls and Procedures.

Evaluation of disclosure controls and procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our Exchange Act reports is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure based solely on the definition of "disclosure controls and procedures" in Rule 13a-15(e) promulgated under the Exchange Act. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Under the supervision of our Company’s Chief Executive Officer and Chief Financial Officer, we carried out an evaluation of our disclosure controls and procedures as of August 31, 2014. At the time our Annual Report on Form 10-K for the year ended May 31, 2014 was filed on August 14, 2014, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of May 31, 2014. Subsequent to that evaluation, in assessing the control deficiencies that contributed to the immaterial error corrections described in Note A and Note P which were identified during our financial close process for the period ended August 31, 2014, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were not effective as of May 31, 2014 and August 31, 2014 because of the material weaknesses in our internal control over financial reporting described below.

A material weakness is a deficiency, or a combination of deficiencies in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the Company’s annual or interim consolidated financial statements will not be prevented or detected on a timely basis. 

We did not maintain effective controls over the preparation, review and approval of certain account reconciliations. Specifically, the Company did not maintain effective controls over the completeness and analysis of supporting schedules and underlying data supporting account reconciliations prepared for certain prepaid expenses and other assets and fixed assets and accumulated depreciation.

We lacked a sufficient complement of personnel with a level of financial reporting expertise commensurate with our financial reporting requirements, specifically, with respect to resources capable of monitoring and accurately recording certain routine transactions specifically in prepaid expenses and other assets and fixed assets and accumulated depreciation, to effectively perform testing related to our ERP implementation specifically associated with the configuration of certain intercompany transactions and the conversion of data related to depreciation, or to properly perform account reconciliations as noted above.

These material weaknesses resulted in the revision to our previously reported interim and annual financial statements for the fiscal year ended May 31, 2014 and for the fiscal years ended May 31, 2013, 2012, and 2011, as described in Note P of this Quarterly Report. Accordingly, the Company will be amending its Annual Report on Form 10-K for the year ended May 31, 2014 to reflect the conclusion by the Company's management that internal control over financial reporting and disclosure controls and procedures were not effective as of May 31, 2014.

These material weaknesses could result in misstatements that would result in a material misstatement of the consolidated financial statements that would not be prevented or detected.

In response to these material weaknesses, our management performed additional analysis and procedures, including enhanced business performance reviews and analysis, in order to conclude that despite the material weaknesses reported above, the consolidated financial statements included in this report fairly present in all material respects the Company’s financial condition, results of operations and cash flows for the periods presented and that this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.

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Remediation Plan

During the quarter ended August 31, 2014, we developed a plan to enhance our internal controls over financial reporting, which we believe also will address the material weaknesses discussed above, including the specific remediation initiatives described below:

• Enhancing our internal finance and accounting organizational structure, which includes changes to personnel in place as of May 31, 2014 and hiring additional resources.

• Strengthening our internal policies and processes, including training for personnel, for ensuring account reconciliations are completed and reviewed properly.

• Continued investments in our ERP to improve the transactional accounting and processes supporting the recording of certain routine transactions.

As part of this plan, the following steps were taken during our first quarter of our fiscal year ended May 31, 2015:

• Hired additional full-time and temporary accounting resources with appropriate levels of experience, including a new Global Controller to drive improvement of and oversee day-to-day accounting activities.

• Commenced a detailed review of our ERP to identify opportunities to improve the accuracy of routine transaction processing, specifically with respect to accounting transactions related to purchasing and payables.

Changes in Internal Control over Financial Reporting

Other than items described above related to steps taken under our remediation plan during the quarter, there was no change in our internal control over financial reporting in the fiscal quarter ended August 31, 2014 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

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AngioDynamics, Inc. and Subsidiaries

PART II: OTHER INFORMATION

Item 1. Legal Proceedings.

AngioDynamics v. biolitec

On January 2, 2008, we commenced an action in the United States District Court for the Northern District of New York entitled AngioDynamics, Inc. v. biolitec, Inc. In this action, we sought judgment against biolitec for defense and indemnification in two lawsuits which we previously settled. Our claims arise out of a Supply and Distribution Agreement (“SDA”) entered into with biolitec on April 1, 2002. On September 27, 2011, the U.S. District Court granted key portions of our motion for summary judgment in our legal case against biolitec. The Court also dismissed biolitec’s counterclaims against us. The court denied one portion of our summary judgment motion, which sought to recover additional costs from biolitec, leaving this for adjudication at trial. On November 8, 2012, the Court granted partial judgment to us in the amount of $23.2 million. Biolitec appealed this judgment. On August 23, 2013, the U.S. Court of Appeals for the Second Circuit dismissed biolitec’s appeal.

In October 2009, we commenced an action in the United States District Court for the District of Massachusetts entitled AngioDynamics, Inc. v. biolitec AG and Wolfgang Neuberger. The Complaint in this action was amended in March 2010. This action seeks to recover against biolitec, Inc.’s parent entities and CEO for tortiously interfering with biolitec, Inc.’s contractual obligation to defend and indemnify us, and also seeks to pierce the corporate veil of biolitec, Inc. and to invalidate certain alleged fraudulent transfers in order to hold biolitec, Inc.’s parent entities jointly and severally liable for the alleged breach of the SDA. On September 13, 2012, the Massachusetts Court granted our request for a preliminary injunction prohibiting the downstream merger of biolitec AG with its Austrian subsidiary. On April 1, 2013, the U.S. Court of Appeals for the First Circuit affirmed the preliminary injunction. On January 14, 2014, the District Court entered judgment in our favor as to liability. On March 18, 2014, the District Court entered judgment in our favor against Biolitec AG, Biomed Technology Holdings, Ltd., and Wolfgang Neuberger, jointly and severally, in the amount of $74.9 million. The defendants have appealed this judgment.

August 29, 2013, we became co-plaintiffs in an adversary proceeding in the United States Bankruptcy Court for the District of New Jersey entitled Cyganowski, Trustee, et al. v. Biolitec U.S., Inc., et al. In this action, we assert claims of conversion, unjust enrichment, tortious interference, and unfair competition against various biolitec entities for alleged violation of Bankruptcy Court settlement and sale orders under which we acquired certain assets of Biolitec, Inc. On September 3, 2013, we, along with our co-plaintiff, obtained a temporary restraining order against the defendants in this action. The restraining order is still in place and the Bankruptcy Court is considering our request for permanent injunction relief.

C.R. Bard, Inc. v. AngioDynamics, Inc.

On January 11, 2012, C.R. Bard, Inc. filed a suit in the United States District Court of Utah claiming certain of our implantable port products infringe on patents held by Bard. Bard is seeking unspecified damages and other relief. The Court denied Bard’s motion for pre-trial consolidation with separate actions it filed on the same day against Medical Components, Inc. and Smiths Medical ASD, Inc., but had asked for supplemental briefing on the issue of whether to conduct a common Markman hearing. Meanwhile, we filed petitions for reexamination in the US Patent and Trademark Office which seek to invalidate all three patents asserted in the litigation. Our petitions have been granted and 40 of 41 patent claims have been and remain rejected. The Patent Office has issued a Final Rejection of all the claims subject to reexamination and Bard has filed appeals. The parties are currently in the midst of the briefing process for these appeals. The case has been stayed pending final resolution of the PTO process. We believe these claims are without merit and intend to defend them vigorously. We have not recorded an expense related to the outcome of this litigation because it is not yet possible to determine if a potential loss is probable nor reasonably estimable.

BTG International, Inc.

We received a subpoena from the U.S. Department of Justice (the “DOJ”) requesting documents in relation to a purported criminal investigation the DOJ is conducting regarding BTG International, Inc.’s LC Bead^® product beginning in 2003.  RITA Medical Systems and AngioDynamics, Inc., after its acquisition of RITA, was the exclusive distributor of LC Beads in the United States from 2006 through December 31, 2011.  We are cooperating fully with this investigation and at this time are unable to predict its scope, duration or outcome.

Item 1A. Risk Factors.

In addition to information set forth in this report, you should carefully consider the factors discussed in “Part I, Item 1A. Risk Factors” of our annual report on Form 10-K for our fiscal year ended May 31, 2014 which set forth information relating to important risks and uncertainties that could materially adversely affect our business, financial condition or operating results. You should review and consider such Risk Factors in making any investment decision with respect to our securities. An investment in our securities continues to involve a high degree of risk. There have been no material changes to the risk factors previously disclosed in our annual report on Form 10-K, except for the following related to our internal controls:

We have determined that material weaknesses exist in our internal control over financial reporting which could, if not remediated, have a material adverse impact on our ability to produce timely and accurate financial statements.

We are responsible for establishing and maintaining adequate internal control over financial reporting, as defined in Rule 13a-15(f) under the Securities Exchange Act. As discussed in Part I - Item 4, we identified material weaknesses in our internal control over financial reporting as of May 31, 2014. Solely as a result of these material weaknesses, management concluded that our internal control over financial reporting was not effective as of May 31, 2014.

A material weakness is defined as a deficiency, or combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of our annual or interim financial statements will not be prevented or detected on a timely basis. Although we continue to devote significant time and attention to remedy the identified material weaknesses in internal control over financial reporting, we expect to complete our remediation plan and testing of the remediated controls during the fiscal year ended May 31, 2015. There is the potential that our remedial efforts may not be successful. Until our remediation plan is fully implemented, our management will continue to devote significant time and attention to these efforts. If we do not complete our remediation in a timely fashion, or at all, or if our remediation plan is inadequate or we encounter difficulties in the implementation or maintenance of our internal control over financial reporting or disclosure controls and procedures, there will continue to be an increased risk that we will be unable to timely file future periodic reports with the SEC and/or remain in compliance with certain covenants included in our outstanding debt agreements. In addition, any failure to implement or any difficulties we encounter with our remediation plan could result in additional material weaknesses or deficiencies in our internal control or future material misstatements in our annual or interim consolidated financial statements.

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

The following table provides information with respect to the shares of the company’s common stock repurchased during the three months ended August 31, 2014:

	Issuer Purchases of Equity Securities
Period	Total Number of Shares Purchased (1)	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Programs	Maximum Approximate Dollar Value of Shares that May Yet Be Purchased Under Plans or Programs
June 1 - June 30, 2014	—	—		—	—
July 1 - July 31, 2014	—	—		—	—
August 1 - August 31, 2014	11,070	$	14.73	—	—
Total	11,070	$	14.73	—	—

(1) The company repurchased 11,070 shares during the three months ended August 31, 2014 from employees to satisfy tax withholding requirements on the vesting of restricted shares from equity-based awards.

Item 3. Defaults on Senior Securities.

None.

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Item 4. Mine Safety Disclosures.

None.

Item 5. Other Information.

None.

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Item 6. Exhibits.

EXHIBIT INDEX

No.	Description
31.1	Certification pursuant to Rule 13a-14(a) or 15d-14 under the Securities Exchange Act of 1934.
31.2	Certification pursuant to Rule 13a-14(a) or 15d-14 under the Securities Exchange Act of 1934.
32.1	Certification of Chief Executive Officer pursuant to Title 18, United States Code, Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2	Certification of Chief Financial Officer pursuant to Title 18, United States Code, Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS	XBRL Instance Document
101.SCH	XBRL Schema Document
101.CAL	XBRL Calculation Linkbase Documents
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Labels Linkbase Documents
101.PRE	XBRL Presentation Linkbase Documents

35

SIGNATURES

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

		ANGIODYNAMICS, INC.
		(Registrant)
Date:	October 15, 2014	/ S /    JOSEPH M. DEVIVO
		Joseph M. DeVivo, President, Chief Executive Officer (Principal Executive Officer)
Date:	October 15, 2014	/ S /    MARK T. FROST
		Mark T. Frost, Executive Vice President, Chief Financial Officer (Principal Financial and Chief Accounting Officer)

36

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Joseph M. DeVivo, certify that:

1.	I have reviewed this quarterly report on Form 10-Q of AngioDynamics, Inc.;
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.	The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
(a)	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
(b)	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
(c)	Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
(d)	Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and
5.	The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):
(a)	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and
(b)	Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: October 15, 2014

/ S / JOSEPH M. DEVIVO

Joseph M. DeVivo, President,

Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Mark T. Frost, certify that:

1.	I have reviewed this quarterly report on Form 10-Q of AngioDynamics, Inc.;
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.	The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
(a)	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
(b)	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
(c)	Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
(d)	Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and
5.	The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):
(a)	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and
(b)	Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: October 15, 2014

/ S / MARK T. FROST

Mark T. Frost, Executive Vice President,

Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO TITLE 18,

UNITED STATES CODE, SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Joseph M. DeVivo, President, Chief Executive Officer and Director of ANGIODYNAMICS, Inc. (the "Company"), certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that, to the best of my knowledge:

1.	the quarterly report on Form 10-Q of the Company for the fiscal quarter ended August 31, 2014 (the "Report") fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and
2.	the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: October 15, 2014

/ s / Joseph M. DeVivo

Joseph M. DeVivo, President,

Chief Executive Officer

EX-32.2

Exhibit 32.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO TITLE 18,

UNITED STATES CODE, SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Mark T. Frost Executive Vice President and Chief Financial Officer of ANGIODYNAMICS, Inc. (the "Company"), certify, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that, to the best of my knowledge:

1.	the quarterly report on Form 10-Q of the Company for the fiscal quarter ended August 31, 2014 (the "Report") fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and
2.	the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: October 15, 2014

/ s / Mark T. Frost

Mark T. Frost, Executive Vice President and

Chief Financial Officer

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Accrued Liabilities - Summary of Accrued Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Aug. 31, 2014	May 31, 2014	May 31, 2013	May 31, 2012	May 31, 2011
Other Liabilities Disclosure [Abstract]
Payroll and related expenses	$ 7,595	$ 8,224
Royalties	2,909	2,620
Accrued severance	1,614	765
Deferred revenue	190	200
Sales and franchise taxes	1,400	1,327
Interest rate swap liability	375	555
Other	3,617	2,961
Total	$ 17,700	$ 16,652	$ 16,356	$ 17,070	$ 13,734

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Fair Value - Summary Showing Reconciliation of the Contingent Payments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Aug. 31, 2014
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Earnings revaluation expense	$ 801
Contingent Consideration Earn Out Liability [Member] | Vortex, Microsulis and Clinical Devices [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
May 31, 2014	67,331
Contingent payments	(2,100)
Earnings revaluation expense	801
August 31, 2014	$ 66,032

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Segment and Geographic Information - Summary of Net Sales by Product Category (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended					6 Months Ended	9 Months Ended	12 Months Ended
	Aug. 31, 2014	May 31, 2014	Feb. 28, 2014	Nov. 30, 2013	Aug. 31, 2013	Nov. 30, 2013	Feb. 28, 2014	May 31, 2014	May 31, 2013	May 31, 2012	May 31, 2011
Segment Reporting Information [Line Items]
Net sales	$ 87,331	$ 94,060	$ 88,150	$ 88,571	$ 83,644	$ 172,215	$ 260,365	$ 354,425	$ 341,916	$ 221,917	$ 215,620
Peripheral Vascular [Member]
Segment Reporting Information [Line Items]
Net sales	47,266				45,546
Vascular Access [Member]
Segment Reporting Information [Line Items]
Net sales	26,512				25,282
Oncology/Surgery [Member]
Segment Reporting Information [Line Items]
Net sales	12,370				11,167
Supply Agreement [Member]
Segment Reporting Information [Line Items]
Net sales	$ 1,183				$ 1,649

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Marketable Securities - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Aug. 31, 2014 Investment	May 31, 2014
Marketable Securities [Abstract]
Investments in auction rate securities that failed auctions	$ 1.70	$ 1.80
Number of investments	2

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Earnings Per Share - Additional Information (Detail) In Millions, unless otherwise specified	3 Months Ended
	Aug. 31, 2014	Aug. 31, 2013
Earnings Per Share [Abstract]
Securities excluded from computation of diluted earnings per share	0.9	2.8

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Consolidated Financial Statements - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	0 Months Ended				0 Months Ended					0 Months Ended
	Aug. 31, 2014	Sep. 19, 2013 New Credit Agreement [Member]	Sep. 19, 2013 New Credit Agreement [Member] Term Loan Facility [Member]	Sep. 19, 2013 New Credit Agreement [Member] Term Loan Facility [Member]	Sep. 19, 2013 New Credit Agreement [Member] Senior Secured Revolving Credit Facility [Member]	Sep. 19, 2013 New Credit Agreement [Member] Senior Secured Revolving Credit Facility [Member] Minimum [Member]	Sep. 19, 2013 New Credit Agreement [Member] Senior Secured Revolving Credit Facility [Member] Maximum [Member]	Sep. 19, 2013 New Credit Agreement [Member] Letters of Credit [Member]	Sep. 19, 2013 New Credit Agreement [Member] Swingline Loans [Member]	Sep. 19, 2013 New Credit Agreement [Member] Revolving Credit Facility [Member]	Sep. 19, 2013 New Credit Agreement [Member] Base Rate [Member] JP Morgan Chase [Member]	Sep. 19, 2013 New Credit Agreement [Member] Eurodollar [Member] JP Morgan Chase [Member]
Recent Developments [Line Items]
Senior secured term loan facility				$ 100	$ 100			$ 20	$ 5
Term loan quarterly repayment, year one			5.00%
Term loan quarterly repayment, year two			5.00%
Term loan quarterly repayment, year three			10.00%
Term loan quarterly repayment, year four			15.00%
Term loan quarterly repayment, year five			65.00%
Percentage of increases leverage ratio base rate, minimum											0.50%	1.50%
Percentage of increases leverage ratio base rate, maximum											1.25%	2.25%
Percentage of increase in interest		2.00%
Commitment fee, percentage						0.20%	0.35%
Initial amount borrowed under revolving facility										$ 41.4
Ratio for debt service coverage	1.35
Ratio of indebtedness to consolidated EBITDA	3.75

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Commitments and Continfencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	0 Months Ended			3 Months Ended
	Mar. 18, 2014	Nov. 08, 2012 Biolitec [Member]	Jan. 02, 2008 Biolitec [Member] Lawsuit	Aug. 31, 2014 C.R. Bard, Inc. [Member] patent_claim Petition
Loss Contingencies [Line Items]
Number of lawsuits against biolitec previously settled for which seeking defense and indemnification			2
Partial judgment granted		$ 23.2
Litigation settlement amount	$ 74.9
Number of petitions filed for reexamination of patents				3
Patent claims				41,000
Rejected patent claims				40,000

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Goodwill and Intangible Assets (Tables)

3 Months Ended

Aug. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill by Segment

Adjustments to goodwill for the three months ended August 31, 2014 are as follows (in thousands of dollars):

	As revised
Balance, May 31, 2014	$	360,473
	—
Balance, August 31, 2014	$	360,473

Intangible Assets

As of August 31, 2014 and May 31, 2014, intangible assets consisted of the following :

	August 31, 2014
	Gross carrying value		Accumulated amortization			Net carrying value		Weighted avg useful life
	(in thousands)							(years)
Product technologies	$	150,334	$	(35,173	)	$	115,161	8.8
Customer relationships	86,579		(39,308		)	47,271		9.1
Trademark-NAMIC	28,600		—			28,600		Indefinite
Licenses	7,890		(5,342		)	2,548		8.3
Trademarks	6,345		(2,085		)	4,260		6.6
In-process R&D acquired	3,600		—			3,600		Indefinite
Distributor relationships	900		(900		)	—		3.0
	$	284,248	$	(82,808	)	$	201,440

	May 31, 2014
	Gross carrying value		Accumulated amortization			Net carrying value		Weighted avg useful life
	(in thousands)							(years)
Product technologies	$	150,298	$	(32,930	)	$	117,368	10.2
Customer relationships	86,645		(37,848		)	48,797		11.9
Trademark-NAMIC	28,600		—			28,600		Indefinite
In process R&D acquired	3,600		—			3,600		Indefinite
Licenses	7,639		(5,211		)	2,428		8.4
Trademarks	6,345		(1,882		)	4,463		8.0
Distributor relationships	900		(900		)	—		3.0
	$	284,027	$	(78,771	)	$	205,256

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Fair Value - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	Aug. 31, 2014
Fair Value Disclosures [Abstract]
Potential amount of undiscounted future contingent consideration	$ 77.0
Fair value of contingent milestone payments, current portion	55.1
Fair value of contingent milestone payments, long term portion	$ 10.9

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Income Taxes - Components of Income Tax Expense/(Benefit) (Parenthetical) (Detail)	3 Months Ended
	Aug. 31, 2014	Aug. 31, 2013
Income Tax Disclosure [Abstract]
Estimated tax rate	42.20%	37.40%

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Goodwill and Intangible Assets - Goodwill by Segment (Detail) (USD $) In Thousands, unless otherwise specified					3 Months Ended
	Aug. 31, 2014	May 31, 2014	May 31, 2013	May 31, 2012	Aug. 31, 2014 Clinical Devices B.V [Member]	Aug. 15, 2013 Clinical Devices B.V [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 360,473	$ 360,473	$ 355,637	$ 309,091		$ 4,300
Acquisition					0
Goodwill, Ending Balance	$ 360,473	$ 360,473	$ 355,637	$ 309,091		$ 4,300

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Fair Value - Fair Value Measurements Using Significant Unobservable Inputs (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Aug. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial assets, begining balance	$ 1,809
Earnings revaluation expense - included in earnings, assets	0
Included in other comprehensive income, assets	139
Contingent consideration - Clinical Devices, assets	0
Financial assets, ending balance	1,670
Financial liabilities, begining balance	67,331
Earnings revaluation expense - included in earnings, liabilities	801
Included in other comprehensive income, liabilities	0
Financial liabilities, ending balance	66,032
Clinical Devices B.V [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration - Clinical Devices, liabilities	$ (2,100)

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Segment and Geographic Information - Additional Information (Detail)	3 Months Ended
	Aug. 31, 2013 Segment
Segment Reporting [Abstract]
Number of segment	1

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Acquisitions

3 Months Ended

Aug. 31, 2014

Business Combinations [Abstract]

Acquisitions

ACQUISITIONS

Acquisition of Clinical Devices

On August 15, 2013 we acquired all the outstanding shares of capital stock of Clinical Devices, B.V., exclusive distributor of our fluid management products in the Netherlands. The stock purchase agreement provided for the payment of $3.7 million in cash at closing, which was subject to a working capital adjustment and $400,000 holdback, plus future earn out consideration payable in cash. Earn out consideration was based on our net sales of the fluid management products during the five quarters following the closing as well as milestone payments for achieving regulatory approvals of certain in process research and development for a next-generation tip location technology. The holdback and net sales amounts were paid in September 2014. The total purchase consideration of $8.7 million includes an upfront payment and the estimated fair value of contingent consideration of $5.0 million.

Goodwill recorded as a result of the acquisition was approximately $4.3 million and is not deductible for tax purposes. Intangible assets acquired, other than goodwill, totaled approximately $5.1 million, of which $3.6 million has been identified as in-process research and development (10-year estimated useful life), $1.4 million as customer relationships (15-year estimated useful life) and $70,000 as trademarks (5-year estimated useful life). We also recorded a deferred tax liability of $1.2 million.

The acquisition has been accounted for as a purchase and, accordingly, we have included the results of operations in the financial statements effective August 15, 2013. The pro forma effects of the acquisition on our income statement and balance sheet were not material.

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Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Aug. 31, 2014	Aug. 31, 2013
Income Tax Disclosure [Abstract]
Effective income tax rate	42.20%	37.40%
Taxable income per year for the next nine years	$ 10.0
Taxable income per year for the final eight years	$ 6.5

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Segment and Geographic Information (Tables)

3 Months Ended

Aug. 31, 2014

Segment Reporting [Abstract]

Summary of Net Sales by Product Category

The table below summarizes net sales by product category (in thousands of dollars):

	Three Months Ended
	Aug 31, 2014		Aug 31, 2013
			As revised
Net sales
Peripheral Vascular	$	47,266	$	45,546
Vascular Access	26,512		25,282
Oncology/Surgery	12,370		11,167
Supply Agreement	1,183		1,649
Total	$	87,331	$	83,644

Summary of Net Sales by Geographic Area

The table below presents net sales by geographic area based on external customer location (in thousands of dollars):

	Three Months Ended
	Aug 31, 2014		Aug 31, 2013
			As revised
Net sales
United States	$	68,559	$	67,167
International	17,589		14,828
Supply Agreement	1,183		1,649
Total	$	87,331	$	83,644

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Earnings Per Share (Tables)

3 Months Ended

Aug. 31, 2014

Earnings Per Share [Abstract]

Reconciliation of Basic to Diluted Weighted-Average Shares Outstanding

The following table reconciles basic to diluted weighted-average shares outstanding for the three months ended August 31, 2014 and 2013 (in thousands):

	Three Months Ended
	Aug 31, 2014	Aug 31, 2013
Basic	35,367	34,950
Effect of dilutive securities	518	—
Diluted	35,885	34,950

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Marketable Securities - Marketable Securities (Detail) (USD $) In Thousands, unless otherwise specified	Aug. 31, 2014	May 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	$ 1,825	$ 1,825
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(155)	(16)
Fair Value	1,670	1,809
U.S. Government Agency Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized cost	1,825	1,825
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(155)	(16)
Fair Value	$ 1,670	$ 1,809

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Share-Based Compensation (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Aug. 31, 2014	Aug. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Amount of shares issuable through two stock-based compensation plans	5.8
Charges against income for share-based payment arrangements	$ 1.4	$ 1.2
Unrecognized compensation expenses related to share-based payment arrangements	$ 15.1

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Fair Value (Tables)

3 Months Ended

Aug. 31, 2014

Fair Value Disclosures [Abstract]

Fair Value of Assets and Liabilities Measured on a Recurring Basis

The following tables provide information by level for assets and liabilities that are measured at fair value on a recurring basis as of August 31, 2014 and May 31, 2014 (in thousands of dollars):

	Fair Value Measurements using inputs considered as:						Fair Value at August 31, 2014
	Level 1		Level 2		Level 3
Financial Assets
Cash equivalents
Money market funds	$	445	$	—	$	—	$	445
Total	$	445	$	—	$	—	$	445
Marketable securities
U.S. government agency obligations	$	—			$	1,670	$	1,670
Total	—		—		1,670		1,670
Total Financial Assets	$	445	$	—	$	1,670	$	2,115
Financial Liabilities
Interest rate swap agreements	$	—	$	375	$	—	$	375
Contingent liability for acquisition earn out	—		—		66,032		66,032
Total Financial Liabilities	$	—	$	375	$	66,032	$	66,407
	Fair Value Measurements using inputs considered as:						Fair Value at May 31, 2014
	Level 1		Level 2		Level 3
Financial Assets							As revised
Cash equivalents
Money market funds	$	445	$	—	$	—	$	445
Total	$	445	$	—	$	—	$	445
Marketable securities
U.S. government agency obligations	—		—		1,809		1,809
Total	—		—		1,809		1,809
Total Financial Assets	$	445	$	—	$	1,809	$	2,254
Financial Liabilities
Interest rate swap agreements	$	—	$	555	$	—	$	555
Contingent liability for acquisition earn out	—		—		67,331		67,331
Total Financial Liabilities	$	—	$	555	$	67,331	$	67,886

Fair Value Measurements Using Significant Unobservable Inputs

The table below presents the components of Level 3 fair value instruments as of August 31, 2014 (in thousands of dollars):

	Financial Assets			Financial Liabilities
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)			Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
				As revised
Balance, May 31, 2014	$	1,809		$	67,331
Total gains or losses (realized/unrealized):
Earnings revaluation expense - included in earnings	—			801
Included in other comprehensive income	(139		)	—
Contingent consideration payments	—			(2,100		)
Balance, August 31, 2014	$	1,670		$	66,032

Summary Showing the Recurring Fair Value Measurements of the Contingent Consideration Liability

The recurring Level 3 fair value measurements of the contingent consideration liabilities include the following significant unobservable inputs as of August 31, 2014 (in thousands of dollars):

	Fair value at		Valuation
	Aug 31, 2014		Technique	Unobservable Input	Range
Revenue based payments	$	62,596	Discounted cash flow	Discount rate	4%-10%
				Probability of payment	75-100%
				Projected fiscal year of payment	2015 - 2022
Milestone based payments	3,436		Discounted cash flow	Discount rate	16%-20%
				Probability of payment	75-100%
				Projected fiscal year of payment	2015 - 2017
Total	$	66,032

Summary Showing Reconciliation of the Contingent Payments

The following table provides a reconciliation of the beginning and ending balances of contingent milestone payments measured at fair value that used significant unobservable inputs (Level 3) (in thousands of dollars):

		As revised
Beginning balance -	May 31, 2014	$	67,331
Contingent payments		(2,100		)
Earnings revaluation expense		801
Ending balance -	August 31, 2014	$	66,032

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Marketable Securities (Tables)

3 Months Ended

Aug. 31, 2014

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

As of August 31, 2014 and May 31, 2014, marketable securities consisted of the following (in thousands of dollars):

As of August 31, 2014	Amortized cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available-for-sales securities
U.S. government agency obligations	$	1,825	$	—	$	(155	)	$	1,670
	$	1,825	$	—	$	(155	)	$	1,670

As of May 31, 2014	Amortized cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available-for-sales securities
U.S. government agency obligations	$	1,825	$	—	$	(16	)	$	1,809
	$	1,825	$	—	$	(16	)	$	1,809

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Consolidated Financial Statements

3 Months Ended

Aug. 31, 2014

Accounting Policies [Abstract]

Consolidated Financial Statements

CONSOLIDATED FINANCIAL STATEMENTS

The consolidated balance sheet as of August 31, 2014, the consolidated statement of stockholders’ equity and consolidated statement of cash flows for the three months ended August 31, 2014, the consolidated statements of income and the consolidated statements of comprehensive income for the three months ended August 31, 2014 and 2013 have been prepared by us without audit. The consolidated balance sheet as of May 31, 2014 was derived from audited consolidated financial statements but does not include all disclosures required by accounting principles generally accepted in the United States of America. In the opinion of management, all adjustments (which include only normal recurring adjustments) necessary to state fairly the financial position, changes in stockholders’ equity and comprehensive income, results of operations and cash flows as of and for the period ended August 31, 2014 (and for all periods presented) have been made.

Certain information and footnote disclosures, normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted. It is suggested that these unaudited interim consolidated financial statements be read in conjunction with the financial statements and notes thereto included in the Annual Report on Form 10-K for the fiscal year ended May 31, 2014, as revised. Our most significant accounting policies are disclosed in Note A to the consolidated financial statements included in the aforementioned Form 10-K for the fiscal year ended May 31, 2014. The results of operations in the fiscal periods ended August 31, 2014 and 2013 are not necessarily indicative of the operating results for the respective full fiscal years.

The unaudited interim consolidated financial statements for the three months ended August 31, 2014 and August 31, 2013 include the accounts of AngioDynamics, Inc. and its wholly owned subsidiaries, collectively, the “Company”. All intercompany balances and transactions have been eliminated.

During the financial closing process for the first quarter of fiscal year 2015, the Company determined that financial management had incorrectly accounted for certain asset, liability and income statement balances, beginning in 2011. The Company has identified amounts and concluded that they were not material individually or in the aggregate to any of its previously issued annual and interim financial statements. Although management has determined the amounts individually and in the aggregate are not material to prior periods, in accordance with authoritative accounting literature on considering the effects of misstatements in prior years when quantifying misstatements in the current year, the financial statements included herein have been adjusted to correct for the impact of these items. Refer to Note P for further details.

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Immaterial Corrections (Tables)

3 Months Ended

Aug. 31, 2014

Accounting Changes and Error Corrections [Abstract]

Schedule of Error Corrections and Prior Period Adjustments

The Company has corrected the relevant financial information from previous reporting periods contained in these financial statements. The immaterial error corrections identified were primarily related to our failure to recognize the expense associated with prepaid and other assets in accordance with the underlying contractual terms (cumulative impact of approximately $1.2 million) and depreciation expense (cumulative impact of approximately $0.4 million), and other individually immaterial items. The impacts of these revisions are shown in the tables below:

	Three months ended August 31, 2013
	As previously reported			Adjustments			As revised
Net sales	$	83,579		$	65		$	83,644
Cost of sales	41,097			(33		)	41,064
Gross profit	42,482			98			42,580
Total operating expenses	41,195			(17		)	41,178
Operating income	1,287			115			1,402
Total other income (expenses)	(1,934		)	(31		)	(1,965		)
Income (loss) before taxes	(647		)	84			(563		)
Income tax benefit (expense)	221			(31		)	190
Net income (loss)	(426		)	53			(373		)
Total comprehensive income (loss), net of tax	(155		)	53			(102		)

	Three months ended November 30, 2013
	As previously reported			Adjustments			As revised
Net sales	$	88,616		$	(45	)	$	88,571
Cost of sales	43,686			—			43,686
Gross profit	44,930			(45		)	44,885
Total operating expenses	43,356			88			43,444
Operating income	1,574			(133		)	1,441
Total other income (expense)	(1,660		)	(131		)	(1,791		)
Income (loss) before taxes	(86		)	(264		)	(350		)
Income tax benefit (expense)	(13		)	102			89
Net income (loss)	(99		)	(162		)	(261		)
Total comprehensive income (loss), net of tax	(358		)	(162		)	(520		)

	Six months ended November 30, 2013
	As previously reported			Adjustments			As revised
Net sales	$	172,195		$	20		$	172,215
Cost of sales	84,783			(33		)	84,750
Gross profit	87,412			53			87,465
Total operating expenses	84,551			71			84,622
Operating income	2,861			(18		)	2,843
Total other income (expense)	(3,594		)	(162		)	(3,756		)
Income (loss) before taxes	(733		)	(180		)	(913		)
Income tax benefit (expense)	208			71			279
Net income (loss)	(525		)	(109		)	(634		)
Total comprehensive income (loss), net of tax	(513		)	(109		)	(622		)

	Three months ended February 28, 2014
	As previously reported			Adjustments			As revised
Net sales	$	88,195		$	(45	)	$	88,150
Cost of sales	43,277			80			43,357
Gross profit	44,918			(125		)	44,793
Total operating expenses	38,066			214			38,280
Operating income	6,852			(339		)	6,513
Total other income (expense)	(1,985		)	15			(1,970		)
Income (loss) before taxes	4,867			(324		)	4,543
Income tax benefit (expense)	(176		)	148			(28		)
Net income (loss)	4,691			(176		)	4,515
Total comprehensive income (loss), net of tax	4,869			(176		)	4,693

	Nine months ended February 28, 2014
	As previously reported			Adjustments			As revised
Net sales	$	260,390		$	(25	)	$	260,365
Cost of sales	128,060			47			128,107
Gross profit	132,330			(72		)	132,258
Total operating expenses	122,617			285			122,902
Operating income	9,713			(357		)	9,356
Total other income (expense)	(5,579		)	(147		)	(5,726		)
Income (loss) before taxes	4,134			(504		)	3,630
Income tax benefit (expense)	32			219			251
Net income (loss)	4,166			(285		)	3,881
Total comprehensive income (loss), net of tax	4,356			(285		)	4,071

	Three months ended May 31, 2014
	As previously reported			Adjustments			As revised
Net sales	$	94,065		$	(5	)	$	94,060
Cost of sales	46,534			116			46,650
Gross profit	47,531			(121		)	47,410
Total operating expenses	43,796			30			43,826
Operating income	3,735			(151		)	3,584
Total other income (expense)	(1,489		)	15			(1,474		)
Income (loss) before taxes	2,246			(136		)	2,110
Income tax benefit (expense)	(3,324		)	(1		)	(3,325		)
Net income (loss)	(1,078		)	(137		)	(1,215		)
Total comprehensive income (loss), net of tax	(1,003		)	(137		)	(1,140		)

	Year ended May 31, 2014
	As previously reported			Adjustments			As revised
Net sales	$	354,455		$	(30	)	$	354,425
Cost of sales	174,594			163			174,757
Gross profit	179,861			(193		)	179,668
Total operating expenses	166,413			315			166,728
Operating income	13,448			(508		)	12,940
Total other income (expense)	(7,068		)	(132		)	(7,200		)
Income (loss) before taxes	6,380			(640		)	5,740
Income tax benefit (expense)	(3,292		)	218			(3,074		)
Net income (loss)	3,088			(422		)	2,666
Total comprehensive income (loss), net of tax	3.353			(422		)	2.931

	Year ended May 31, 2014
	As previously reported			Adjustments			As revised
Net cash provided by (used in) operating activities	$	25,280		$	(599	)	$	24,681
Net cash provided by (used in) investing activities	(17,047		)	599			(16,448		)
Net cash provided by (used in) financing activities	(14,016		)	—			(14,016		)

	As of May 31, 2014
	As previously reported		Adjustments			As revised
Accounts receivable, net of allowances	$	62,148	$	(180	)	$	61,968
Inventories	61,056		178			61,234
Prepaid expenses and other	5,975		(504		)	5,471
Total current assets	152,228		(506		)	151,722
Property, plant and equipment, net	67,208		(618		)	66,590
Other assets	4,876		(950		)	3,926
Goodwill	360,294		179			360,473
Deferred income taxes, long term	9,767		636			10,403
Total assets	800,150		(1,259		)	798,891
Accrued liabilities	16,762		(110		)	16,652
Current portion of contingent payments	16,341		(3,462		)	12,879
Total current liabilities	72,286		(3,572		)	68,714
Contingent consideration, net of current portion	51,080		3,372			54,452
Total liabilities	262,256		(200		)	262,056
Additional paid-in capital	508,263		91			508,354
Retained earnings	32,651		(1,150		)	31,501
Total stockholders' equity	537,894		(1,059		)	536,835

	Year ended May 31, 2013
	As previously reported			Adjustments			As revised
Net sales	$	342,026		$	(110	)	$	341,916
Cost of sales	173,037			365			173,402
Gross profit	168,989			(475		)	168,514
Total operating expenses	161,895			331			162,226
Operating income	7,094			(806		)	6,288
Total other income (expense)	(7,737		)	(138		)	(7,875		)
Income (loss) before taxes	(643		)	(944		)	(1,587		)
Income tax benefit (expense)	31			345			376
Net income (loss)	(612		)	(599		)	(1,211		)
Total comprehensive income (loss), net of tax	(872		)	(599		)	(1,471		)

	Year ended May 31, 2013
	As previously reported			Adjustments			As revised
Net cash provided by (used in) operating activities	$	26,883		$	(231	)	$	26,652
Net cash provided by (used in) investing activities	(22,238		)	—			(22,238		)
Net cash provided by (used in) financing activities	(6,286		)	—			(6,286		)

	As of May 31, 2013
	As previously reported		Adjustments			As revised
Accounts receivable, net of allowances	$	47,791	$	(110	)	$	47,681
Inventories	55,062		17			55,079
Prepaid expenses and other	7,554		(269		)	7,285
Total current assets	141,516		(362		)	141,154
Property, plant and equipment, net	62,650		(259		)	62,391
Other assets	5,559		(651		)	4,908
Intangible assets, net	214,848		(175		)	214,673
Goodwill	355,458		179			355,637
Deferred income taxes, long term	11,007		418			11,425
Total assets	791,584		(850		)	790,734
Accounts payable	24,522		(52		)	24,470
Accrued liabilities	16,426		(70		)	16,356
Total current liabilities	63,437		(122		)	63,315
Total liabilities	264,754		(122		)	264,632
Retained earnings	29,563		(728		)	28,835
Total stockholders' equity	526,830		(728		)	526,102

	Year ended May 31, 2012
	As previously reported			Adjustments			As revised
Net sales	$	221,787		$	130		$	221,917
Cost of sales	95,829			779			96,608
Gross profit	125,958			(649		)	125,309
Total operating expenses	128,920			297			129,217
Operating income	(2,962		)	(946		)	(3,908		)
Total other income (expense)	(2,320		)	806			(1,514		)
Income (loss) before taxes	(5,282		)	(140		)	(5,422		)
Income tax expense (benefit)	188			51			239
Net income (loss)	(5,094		)	(89		)	(5,183		)
Total comprehensive income (loss), net of tax	(5,095		)	(89		)	(5,184		)

	Year ended May 31, 2012
	As previously reported			Adjustments		As revised
Net cash provided by (used in) operating activities	$	11,497		$	105	$	11,602
Net cash provided by (used in) investing activities	(176,360		)	126		(176,234		)
Net cash provided by (used in) financing activities	142,338			—		142,338

	As of May 31, 2012
	As previously reported		Adjustments			As revised
Cash and cash equivalents	$	23,508	$	231		$	23,739
Accounts receivable, net of allowances	48,588		(1,685		)	46,903
Prepaid expenses and other	9,826		(23		)	9,803
Total current assets	159,238		(1,477		)	157,761
Property, plant and equipment, net	55,915		(305		)	55,610
Other assets	10,707		(348		)	10,359
Intangible assets, net	147,266		97			147,363
Goodwill	308,912		179			309,091
Deferred income taxes, long term	39,198		73			39,271
Total assets	721,769		(1,781		)	719,988
Accrued liabilities	18,722		(1,652		)	17,070
Total current liabilities	55,422		(1,652		)	53,770
Total liabilities	198,249		(1,652		)	196,597
Retained earnings	30,175		(129		)	30,046
Total stockholders' equity	523,520		(129		)	523,391

	Year ended May 31, 2011
	As previously reported			Adjustments			As revised
Net sales	$	215,750		$	(130	)	$	215,620
Cost of sales	90,047			—			90,047
Gross profit	125,703			(130		)	125,573
Total operating expenses	113,740			(68		)	113,672
Operating income	11,963			(62		)	11,901
Total other income (expenses)	(1,265		)	—			(1,265		)
Income (loss) before taxes	10,698			(62		)	10,636
Income tax expense (benefit)	(2,581		)	22			(2,559		)
Net income (loss)	8,117			(40		)	8,077
Total comprehensive income (loss), net of tax	8,238			(40		)	8,198

	As of May 31, 2011
	As previously reported		Adjustments			As revised
Accounts receivable, net of allowances	$	27,141	$	(130	)	$	27,011
Total current assets	194,305		(130		)	194,175
Deferred income taxes, long term	5,835		22			5,857
Total assets	437,421		(108		)	437,313
Accrued liabilities	13,841		(107		)	13,734
Total current liabilities	25,507		(107		)	25,400
Total liabilities	31,782		(107		)	31,675
Additional paid-in capital	371,393		(13		)	371,380
Retained earnings	35,269		11			35,280
Total stockholders' equity	405,639		(1		)	405,638

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Long Term Debt - Additional Information (Detail) (USD $)	3 Months Ended			0 Months Ended						0 Months Ended
	Aug. 31, 2014	May 31, 2014	Aug. 31, 2014 Revolving Credit Facility [Member]	Sep. 19, 2013 New Credit Agreement [Member]	Sep. 19, 2013 New Credit Agreement [Member] Base Rate [Member] JP Morgan Chase [Member]	Sep. 19, 2013 New Credit Agreement [Member] Eurodollar [Member] JP Morgan Chase [Member]	Sep. 19, 2013 New Credit Agreement [Member] Term Loan Facility [Member]	Sep. 19, 2013 New Credit Agreement [Member] Term Loan Facility [Member]	Sep. 19, 2013 New Credit Agreement [Member] Senior Secured Revolving Credit Facility [Member]	Sep. 19, 2013 New Credit Agreement [Member] Senior Secured Revolving Credit Facility [Member] Minimum [Member]	Sep. 19, 2013 New Credit Agreement [Member] Senior Secured Revolving Credit Facility [Member] Maximum [Member]	Sep. 19, 2013 New Credit Agreement [Member] Letters of Credit [Member]	Sep. 19, 2013 New Credit Agreement [Member] Swingline Loans [Member]	Sep. 19, 2013 New Credit Agreement [Member] Revolving Credit Facility [Member]	Aug. 31, 2014 Term Loan [Member]
Debt Instrument [Line Items]
Senior secured term loan facility								$ 100,000,000	$ 100,000,000			$ 20,000,000	$ 5,000,000
Term loan quarterly repayment, year one							5.00%
Term loan quarterly repayment, year two							5.00%
Term loan quarterly repayment, year three							10.00%
Term loan quarterly repayment, year four							15.00%
Term loan quarterly repayment, year five							65.00%
Percentage of increases leverage ratio base rate, minimum					0.50%	1.50%
Percentage of increases leverage ratio base rate, maximum					1.25%	2.25%
Percentage of increase in interest				2.00%
Commitment fee percentage										0.20%	0.35%
Notional amount of interest rate swap agreement	100,000,000
Fixed interest rate payments	0.74%
Initial amount borrowed under revolving facility														41,400,000
LONG-TERM DEBT, term loan, net of current portion	$ 90,000,000	$ 91,250,000	$ 46,400,000												$ 95,000,000
Ratio for debt service coverage	1.35
Ratio of indebtedness to consolidated EBITDA	3.75

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Fair Value - Summary Showing the Recurring Fair Value Measurements of the Contingent Consideration Liability (Detail) (USD $) In Thousands, unless otherwise specified												3 Months Ended			3 Months Ended
	Aug. 31, 2014	May 31, 2014	Aug. 31, 2014 Contingent Consideration Earn Out Liability [Member]	Aug. 31, 2014 Recurring [Member]	May 31, 2014 Recurring [Member]	May 31, 2014 Recurring [Member] Contingent Consideration Earn Out Liability [Member]	Aug. 31, 2014 Level 3 [Member] Recurring [Member]	May 31, 2014 Level 3 [Member] Recurring [Member]	Aug. 31, 2014 Level 3 [Member] Recurring [Member] Contingent Consideration Earn Out Liability [Member]	May 31, 2014 Level 3 [Member] Recurring [Member] Contingent Consideration Earn Out Liability [Member]	Aug. 31, 2014 Level 3 [Member] Revenue Based Payments [Member] Recurring [Member] Contingent Consideration Earn Out Liability [Member]	Aug. 31, 2014 Level 3 [Member] Revenue Based Payments [Member] Minimum [Member] Recurring [Member] Contingent Consideration Earn Out Liability [Member]	Aug. 31, 2014 Level 3 [Member] Revenue Based Payments [Member] Maximum [Member] Recurring [Member] Contingent Consideration Earn Out Liability [Member]	Aug. 31, 2014 Level 3 [Member] Milestone Based Payments [Member] Recurring [Member] Contingent Consideration Earn Out Liability [Member]	Aug. 31, 2014 Level 3 [Member] Milestone Based Payments [Member] Minimum [Member] Recurring [Member] Contingent Consideration Earn Out Liability [Member]	Aug. 31, 2014 Level 3 [Member] Milestone Based Payments [Member] Maximum [Member] Recurring [Member] Contingent Consideration Earn Out Liability [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Revenue based payments	$ 66,032	$ 67,331									$ 62,596			$ 3,436
Discount rate												4.00%	10.00%		16.00%	20.00%
Probability of payment												75.00%	100.00%		75.00%	100.00%
Projected fiscal year of payment												2015	2022		2015	2017
Total fair value financial liabilities			$ 66,032	$ 66,407	$ 67,886	$ 67,331	$ 66,032	$ 67,331	$ 66,032	$ 67,331

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Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Aug. 31, 2014	Aug. 31, 2013
Income Statement [Abstract]
Net sales	$ 87,331	$ 83,644
Cost of sales	41,506	41,064
Gross profit	45,825	42,580
Operating expenses
Research and development	6,718	6,709
Sales and marketing	20,067	19,963
General and administrative	7,323	6,686
Amortization of intangibles	4,015	4,109
Change in fair value of contingent consideration	801	733
Acquisition, restructuring and other items, net	2,664	2,002
Medical device excise tax	995	976
Total operating expenses	42,583	41,178
Operating income	3,242	1,402
Other (expenses) income
Interest expense	(799)	(1,246)
Interest income		0
Other expense	(1,025)	(719)
Total other expenses, net	(1,824)	(1,965)
Income (loss) before income tax expense (benefit)	1,418	(563)
Income tax expense (benefit)	948	(190)
Net income (loss)	$ 470	$ (373)
Income (loss) per share
Basic (in usd per share)	$ 0.01	$ (0.01)
Diluted (in usd per share)	$ 0.01	$ (0.01)
Basic weighted average shares outstanding (in shares)	35,367	34,950
Diluted weighted average shares outstanding (in shares)	35,885	34,950

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Earnings Per Share - Reconciliation of Basic to Diluted Weighted-Average Shares Outstanding (Detail) In Thousands, unless otherwise specified	3 Months Ended
	Aug. 31, 2014	Aug. 31, 2013
Earnings Per Share [Abstract]
Basic	35,367	34,950
Effect of dilutive securities	518	0
Diluted	35,885	34,950

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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Aug. 31, 2014	Aug. 31, 2013
Cash flows from operating activities:
Net income (loss)	$ 470	$ (373)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,700	5,910
Stock based compensation	1,395	1,152
Change in fair value of contingent consideration	801	733
Deferred income taxes	2,110	569
Change in accounts receivable allowances	127	195
Other	190	(108)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	5,815	1,793
Inventories	(9,187)	(3,473)
Prepaid expenses and other assets	(2,836)	(375)
Accounts payable, accrued and other liabilities	(233)	1,277
Net cash provided by operating activities	5,352	7,300
Cash flows from investing activities:
Additions to property, plant and equipment	(5,104)	(2,903)
Acquisition of business, net of cash acquired	0	(3,239)
Acquisition of intangible and other assets	(154)	(930)
Proceeds from sale or maturity of marketable securities	0	303
Net cash used in investing activities	(5,258)	(6,769)
Cash flows from financing activities:
Repayment of long-term debt	(1,250)	0
Payment of contingent consideration previously established in purchase accounting	(2,100)	(950)
Proceeds from exercise of stock options and employee stock purchase plan	959	678
Net cash used in financing activities	(2,391)	(272)
Effect of exchange rate changes on cash and cash equivalents	0	4
Increase (decrease) in cash and cash equivalents	(2,297)	263
Cash and cash equivalents at beginning of period	16,105	21,802
Cash and cash equivalents at end of period	13,808	22,065
Supplemental disclosure of non-cash investing and financing activities:
Contractual obligations for acquisition of intangibles and business	0	4,970
Contractual obligations for acquisition of fixed assets	$ 0	$ 2,663

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Immaterial Corrections (Details) (USD $)	3 Months Ended					6 Months Ended	9 Months Ended	12 Months Ended
	Aug. 31, 2014	May 31, 2014	Feb. 28, 2014	Nov. 30, 2013	Aug. 31, 2013	Nov. 30, 2013	Feb. 28, 2014	May 31, 2014	May 31, 2013	May 31, 2012	May 31, 2011
Net sales	$ 87,331,000	$ 94,060,000	$ 88,150,000	$ 88,571,000	$ 83,644,000	$ 172,215,000	$ 260,365,000	$ 354,425,000	$ 341,916,000	$ 221,917,000	$ 215,620,000
Cost of sales	41,506,000	46,650,000	43,357,000	43,686,000	41,064,000	84,750,000	128,107,000	174,757,000	173,402,000	96,608,000	90,047,000
Gross profit	45,825,000	47,410,000	44,793,000	44,885,000	42,580,000	87,465,000	132,258,000	179,668,000	168,514,000	125,309,000	125,573,000
Total operating expenses	42,583,000	43,826,000	38,280,000	43,444,000	41,178,000	84,622,000	122,902,000	166,728,000	162,226,000	129,217,000	113,672,000
Operating income	3,242,000	3,584,000	6,513,000	1,441,000	1,402,000	2,843,000	9,356,000	12,940,000	6,288,000	(3,908,000)	11,901,000
Total other income (expenses)	(1,824,000)	(1,474,000)	(1,970,000)	(1,791,000)	(1,965,000)	(3,756,000)	(5,726,000)	(7,200,000)	(7,875,000)	(1,514,000)	(1,265,000)
Income (loss) before taxes	1,418,000	2,110,000	4,543,000	(350,000)	(563,000)	(913,000)	3,630,000	5,740,000	(1,587,000)	(5,422,000)	10,636,000
Income tax expense (benefit)	(948,000)	(3,325,000)	(28,000)	89,000	190,000	279,000	251,000	(3,074,000)	376,000	239,000	(2,559,000)
Net income (loss)	470,000	(1,215,000)	4,515,000	(261,000)	(373,000)	(634,000)	3,881,000	2,666,000	(1,211,000)	(5,183,000)	8,077,000
Net cash provided by (used in) operating activities								24,681,000	26,652,000	11,602,000
Net cash provided by (used in) investing activities								(16,448,000)	(22,238,000)	(176,234,000)
Net cash provided by (used in) financing activities								(14,016,000)	(6,286,000)	142,338,000
Cash and cash equivalents	13,808,000	16,105,000			22,065,000			16,105,000	21,802,000	23,739,000
Accounts receivable, net of allowances	56,026,000	61,968,000						61,968,000	47,681,000	46,903,000	27,011,000
Inventories	70,421,000	61,234,000						61,234,000	55,079,000
Prepaid expenses and other	6,777,000	5,471,000						5,471,000	7,285,000	9,803,000
Total current assets	154,305,000	151,722,000						151,722,000	141,154,000	157,761,000	194,175,000
PROPERTY, PLANT AND EQUIPMENT-AT COST, net	66,794,000	66,590,000						66,590,000	62,391,000	55,610,000
OTHER ASSETS	3,345,000	3,926,000						3,926,000	4,908,000	10,359,000
GOODWILL	360,473,000	360,473,000						360,473,000	355,637,000	309,091,000
DEFERRED INCOME TAXES, long term	9,236,000	10,403,000						10,403,000	11,425,000	39,271,000	5,857,000
Total assets	796,114,000	798,891,000						798,891,000	790,734,000	719,988,000	437,313,000
Accrued liabilities	17,700,000	16,652,000						16,652,000	16,356,000	17,070,000	13,734,000
Current portion of contingent payments		12,879,000						12,879,000
Total current liabilities	63,707,000	68,714,000						68,714,000	63,315,000	53,770,000	25,400,000
Contingent consideration, net of current portion		54,452,000						54,452,000
Total liabilities	256,430,000	262,056,000						262,056,000	264,632,000	196,597,000	31,675,000
Additional paid-in capital	510,704,000	508,354,000						508,354,000			371,380,000
Retained earnings	31,971,000	31,501,000						31,501,000	28,835,000	30,046,000	35,280,000
Total stockholders' equity	539,684,000	536,835,000						536,835,000	526,102,000	523,391,000	405,638,000
INTANGIBLE ASSETS, net	201,440,000	205,256,000						205,256,000	214,673,000	147,363,000
Accounts payable	29,282,000	32,895,000						32,895,000	24,470,000
Total comprehensive income (loss), net of tax	496,000	(1,140,000)	4,693,000	(520,000)	(102,000)	(622,000)	4,000	3,000	(1,471,000)	(5,184,000)	8,198,000
Scenario, Adjustment [Member]
Errors in prepaid assets	1,200,000
Errors in depreciation	400,000
Net sales		(5,000)	(45,000)	(45,000)	65,000	20,000	(25,000)	(30,000)	(110,000)	130,000	(130,000)
Cost of sales		116,000	80,000	0	(33,000)	(33,000)	47,000	163,000	365,000	779,000	0
Gross profit		(121,000)	(125,000)	(45,000)	98,000	53,000	(72,000)	(193,000)	(475,000)	(649,000)	(130,000)
Total operating expenses		30,000	214,000	88,000	(17,000)	71,000	285,000	315,000	331,000	297,000	(68,000)
Operating income		(151,000)	(339,000)	(133,000)	115,000	(18,000)	(357,000)	(508,000)	(806,000)	(946,000)	(62,000)
Total other income (expenses)		15,000	15,000	(131,000)	(31,000)	(162,000)	(147,000)	(132,000)	(138,000)	806,000	0
Income (loss) before taxes		(136,000)	(324,000)	(264,000)	84,000	(180,000)	(504,000)	(640,000)	(944,000)	(140,000)	(62,000)
Income tax expense (benefit)		(1,000)	148,000	102,000	(31,000)	71,000	219,000	218,000	345,000	51,000	22,000
Net income (loss)		(137,000)	(176,000)	(162,000)	53,000	(109,000)	(285,000)	(422,000)	(599,000)	(89,000)	(40,000)
Net cash provided by (used in) operating activities								(599,000)	(231,000)	105,000
Net cash provided by (used in) investing activities								599,000	0	126,000
Net cash provided by (used in) financing activities								0	0	0
Cash and cash equivalents										231,000
Accounts receivable, net of allowances		(180,000)						(180,000)	(110,000)	(1,685,000)	(130,000)
Inventories		178,000						178,000	17,000
Prepaid expenses and other		(504,000)						(504,000)	(269,000)	(23,000)
Total current assets		(506,000)						(506,000)	(362,000)	(1,477,000)	(130,000)
PROPERTY, PLANT AND EQUIPMENT-AT COST, net		(618,000)						(618,000)	(259,000)	(305,000)
OTHER ASSETS		(950,000)						(950,000)	(651,000)	(348,000)
GOODWILL		179,000						179,000	179,000	179,000
DEFERRED INCOME TAXES, long term		636,000						636,000	418,000	73,000	22,000
Total assets		(1,259,000)						(1,259,000)	(850,000)	(1,781,000)	(108,000)
Accrued liabilities		(110,000)						(110,000)	(70,000)	(1,652,000)	(107,000)
Current portion of contingent payments		(3,462,000)						(3,462,000)
Total current liabilities		(3,572,000)						(3,572,000)	(122,000)	(1,652,000)	(107,000)
Contingent consideration, net of current portion		3,372,000						3,372,000
Total liabilities		(200,000)						(200,000)	(122,000)	(1,652,000)	(107,000)
Additional paid-in capital		91,000						91,000			(13,000)
Retained earnings		(1,150,000)						(1,150,000)	(728,000)	(129,000)	11,000
Total stockholders' equity		(1,059,000)						(1,059,000)	(728,000)	(129,000)	(1,000)
INTANGIBLE ASSETS, net									(175,000)	97,000
Accounts payable									(52,000)
Total comprehensive income (loss), net of tax		(137,000)	(176,000)	(162,000)	53,000	(109,000)	0	(422,000)	(599,000)	(89,000)	(40,000)
Scenario, Previously Reported [Member]
Net sales		94,065,000	88,195,000	88,616,000	83,579,000	172,195,000	260,390,000	354,455,000	342,026,000	221,787,000	215,750,000
Cost of sales		46,534,000	43,277,000	43,686,000	41,097,000	84,783,000	128,060,000	174,594,000	173,037,000	95,829,000	90,047,000
Gross profit		47,531,000	44,918,000	44,930,000	42,482,000	87,412,000	132,330,000	179,861,000	168,989,000	125,958,000	125,703,000
Total operating expenses		43,796,000	38,066,000	43,356,000	41,195,000	84,551,000	122,617,000	166,413,000	161,895,000	128,920,000	113,740,000
Operating income		3,735,000	6,852,000	1,574,000	1,287,000	2,861,000	9,713,000	13,448,000	7,094,000	(2,962,000)	11,963,000
Total other income (expenses)		(1,489,000)	(1,985,000)	(1,660,000)	(1,934,000)	(3,594,000)	(5,579,000)	(7,068,000)	(7,737,000)	(2,320,000)	(1,265,000)
Income (loss) before taxes		2,246,000	4,867,000	(86,000)	(647,000)	(733,000)	4,134,000	6,380,000	(643,000)	(5,282,000)	10,698,000
Income tax expense (benefit)		(3,324,000)	(176,000)	(13,000)	221,000	208,000	32,000	(3,292,000)	31,000	188,000	(2,581,000)
Net income (loss)		(1,078,000)	4,691,000	(99,000)	(426,000)	(525,000)	4,166,000	3,088,000	(612,000)	(5,094,000)	8,117,000
Net cash provided by (used in) operating activities								25,280,000	26,883,000	11,497,000
Net cash provided by (used in) investing activities								(17,047,000)	(22,238,000)	(176,360,000)
Net cash provided by (used in) financing activities								(14,016,000)	(6,286,000)	142,338,000
Cash and cash equivalents										23,508,000
Accounts receivable, net of allowances		62,148,000						62,148,000	47,791,000	48,588,000	27,141,000
Inventories		61,056,000						61,056,000	55,062,000
Prepaid expenses and other		5,975,000						5,975,000	7,554,000	9,826,000
Total current assets		152,228,000						152,228,000	141,516,000	159,238,000	194,305,000
PROPERTY, PLANT AND EQUIPMENT-AT COST, net		67,208,000						67,208,000	62,650,000	55,915,000
OTHER ASSETS		4,876,000						4,876,000	5,559,000	10,707,000
GOODWILL		360,294,000						360,294,000	355,458,000	308,912,000
DEFERRED INCOME TAXES, long term		9,767,000						9,767,000	11,007,000	39,198,000	5,835,000
Total assets		800,150,000						800,150,000	791,584,000	721,769,000	437,421,000
Accrued liabilities		16,762,000						16,762,000	16,426,000	18,722,000	13,841,000
Current portion of contingent payments		16,341,000						16,341,000
Total current liabilities		72,286,000						72,286,000	63,437,000	55,422,000	25,507,000
Contingent consideration, net of current portion		51,080,000						51,080,000
Total liabilities		262,256,000						262,256,000	264,754,000	198,249,000	31,782,000
Additional paid-in capital		508,263,000						508,263,000			371,393,000
Retained earnings		32,651,000						32,651,000	29,563,000	30,175,000	35,269,000
Total stockholders' equity		537,894,000						537,894,000	526,830,000	523,520,000	405,639,000
INTANGIBLE ASSETS, net									214,848,000	147,266,000
Accounts payable									24,522,000
Total comprehensive income (loss), net of tax		$ (1,003,000)	$ 4,869,000	$ (358,000)	$ (155,000)	$ (513,000)	$ 4,000	$ 3,000	$ (872,000)	$ (5,095,000)	$ 8,238,000

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Inventories - Schedule of Inventories (Detail) (USD $) In Thousands, unless otherwise specified	Aug. 31, 2014	May 31, 2014	May 31, 2013
Inventory Disclosure [Abstract]
Raw materials	$ 29,696	$ 24,734
Work in process	12,677	11,992
Finished goods	28,048	24,508
Inventories	$ 70,421	$ 61,234	$ 55,079

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Restructuring

3 Months Ended

Aug. 31, 2014

Restructuring and Related Activities [Abstract]

Restructuring

RESTRUCTURING

During the three months ended August 31, 2014 we initiated a restructuring of finance, R&D and S&M organizations to improve our profitability. As part of the restructuring, we recorded $1.1 million of severance expense which is included in “Acquisition, restructuring and other items, net” in the statements of income.

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Goodwill and Intangible Assets - Additional Information (Detail)	12 Months Ended	3 Months Ended
	May 31, 2013	Aug. 31, 2014 Maximum [Member]	Aug. 31, 2014 Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets other than goodwill	3 years	15 years	3 years

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Inventories (Tables)

3 Months Ended

Aug. 31, 2014

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories are stated at lower of cost (using the first-in, first-out method) or market. As of August 31, 2014 and May 31, 2014, inventories consisted of the following:

	Aug 31, 2014		May 31, 2014
			As revised
	(in thousands)
Raw materials	$	29,696	$	24,734
Work in process	12,677		11,992
Finished goods	28,048		24,508
Inventories	$	70,421	$	61,234

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Consolidated Statement of Stockholders' Equity (USD $)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]
Beginning Balance at May. 31, 2014	$ 536,835,000	$ 353,000	$ 508,354,000	$ 31,501,000	$ (1,269,000)	$ (2,104,000)
Beginning Balance,Treasury Shares at May. 31, 2014	(142,305)
Beginning Balance, Shares at May. 31, 2014		35,442,004
Net income (loss)	470,000			470,000
Exercise of stock options	206,000	1,000	205,000
Exercise of stock options, Shares		17,008
Purchase of common stock under ESPP	751,000	1,000	750,000
Purchase of common stock under ESPP, Shares		62,574
Issuance of performance shares	1,000	1,000
Issuance of performance shares, Shares		124,905
Stock based compensation	1,395,000		1,395,000
Other comprehensive income, net of tax	26,000				26,000
Ending Balance at Aug. 31, 2014	$ 539,684,000	$ 356,000	$ 510,704,000	$ 31,971,000	$ (1,243,000)	$ (2,104,000)
Ending Balance,Treasury Shares at Aug. 31, 2014	(142,305)					(142,305.000)
Ending Balance, Shares at Aug. 31, 2014		35,646,491

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Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Aug. 31, 2014	Aug. 31, 2013
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 470	$ (373)
Other comprehensive income (loss), before tax:
Unrealized gain (loss) on interest rate swap	181	319
Unrealized gain (loss) on marketable securities	(140)	0
Foreign currency translation gain (loss)	0	70
Other comprehensive income (loss), before tax	41	389
Income tax (expense) benefit related to items of other comprehensive income	(15)	(118)
Other comprehensive income (loss), net of tax	26	271
Total comprehensive income (loss), net of tax	$ 496	$ (102)

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Segment and Geographic Information

3 Months Ended

Aug. 31, 2014

Segment Reporting [Abstract]

Segment and Geographic Information

SEGMENT AND GEOGRAPHIC INFORMATION

We consider our business to be a single operating segment entity engaged in the development, manufacture and sale on a global basis of medical devices for vascular access, surgery, peripheral vascular disease and oncology. Our chief operating decision maker (CEO) evaluates the various global product portfolios on a net sales basis. Executives reporting to the CEO include those responsible for operations and supply chain management, research and development, sales, franchise marketing and certain corporate functions. The CEO evaluates profitability, investment and cash flow metrics on a consolidated worldwide basis due to shared infrastructure and resources.

The table below summarizes net sales by product category (in thousands of dollars):

	Three Months Ended
	Aug 31, 2014		Aug 31, 2013
			As revised
Net sales
Peripheral Vascular	$	47,266	$	45,546
Vascular Access	26,512		25,282
Oncology/Surgery	12,370		11,167
Supply Agreement	1,183		1,649
Total	$	87,331	$	83,644

The table below presents net sales by geographic area based on external customer location (in thousands of dollars):

	Three Months Ended
	Aug 31, 2014		Aug 31, 2013
			As revised
Net sales
United States	$	68,559	$	67,167
International	17,589		14,828
Supply Agreement	1,183		1,649
Total	$	87,331	$	83,644

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Document and Entity Information	3 Months Ended
	Aug. 31, 2014	Oct. 01, 2014
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Aug. 31, 2014
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	ANGO
Entity Registrant Name	ANGIODYNAMICS INC
Entity Central Index Key	0001275187
Current Fiscal Year End Date	--05-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		35,652,167

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Fair Value

3 Months Ended

Aug. 31, 2014

Fair Value Disclosures [Abstract]

Fair Value

FAIR VALUE

Our financial instruments include cash and cash equivalents, accounts receivable, marketable securities, accounts payable, interest rate swap agreement and contingent earn outs. The carrying amount of cash and cash equivalents, accounts receivable, marketable securities and accounts payable approximates fair value due to the immediate or short-term maturities. The interest rate swap agreement has been recorded at its fair value based on a valuation received from an independent third party. The contingent earn out has been recorded at fair value using the income approach.

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. This policy establishes a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The policy describes three levels of inputs that may be used to measure fair value which are provided in the table below.

Level 1 Quoted prices in active markets for identical assets or liabilities. Level 1 assets include bank time deposits, money market funds, mutual funds and U.S. Treasury securities that are traded in an active exchange market.

Level 2 Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 2 assets include US government securities and corporate bonds. When quoted market prices are unobservable, we obtain pricing information from an independent pricing vendor. The pricing vendor uses various pricing models for each asset class that are consistent with what other market participants would use. The inputs and assumptions to the model of the pricing vendor are derived from market observable sources including: benchmark yields, reported trades, broker/dealer quotes, issuer spreads, benchmark securities, bids, offers, and other market-related data. Since many fixed income securities do not trade on a daily basis, the methodology of the pricing vendor uses available information as applicable such as benchmark curves, benchmarking of like securities, sector groupings, and matrix pricing. The pricing vendor considers all available market observable inputs in determining the evaluation for a security. Thus, certain securities may not be priced using quoted prices, but rather determined from market observable information. These investments are included in Level 2 and primarily comprise our portfolio of corporate and government fixed income securities. Additionally included in Level 2 are interest rate swap agreements which are valued using a mid-market valuation model.

Level 3 Unobservable inputs that are supported by little or no market activity and are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. This category currently includes the auction rate securities where independent pricing information was not able to be obtained and the contingent earn out. Our investments in auction-rate securities were classified as Level 3 as quoted prices were unavailable since these auction rate securities issued by New York state and local government authorities failed auction. Due to limited market information, we utilized a discounted cash flow (“DCF”) model to derive an estimate of fair value for all periods presented. The assumptions used in preparing the DCF model included estimates with respect to the amount and timing of future interest and principal payments, forward projections of the interest rate benchmarks, the probability of full repayment of the principal considering the credit quality and guarantees in place, and the rate of return required by investors to own such securities given the current liquidity risk associated with auction-rate securities. The contingent earn outs were valued utilizing a discounted cash flow method as detailed below.

The following tables provide information by level for assets and liabilities that are measured at fair value on a recurring basis as of August 31, 2014 and May 31, 2014 (in thousands of dollars):

	Fair Value Measurements using inputs considered as:						Fair Value at August 31, 2014
	Level 1		Level 2		Level 3
Financial Assets
Cash equivalents
Money market funds	$	445	$	—	$	—	$	445
Total	$	445	$	—	$	—	$	445
Marketable securities
U.S. government agency obligations	$	—			$	1,670	$	1,670
Total	—		—		1,670		1,670
Total Financial Assets	$	445	$	—	$	1,670	$	2,115
Financial Liabilities
Interest rate swap agreements	$	—	$	375	$	—	$	375
Contingent liability for acquisition earn out	—		—		66,032		66,032
Total Financial Liabilities	$	—	$	375	$	66,032	$	66,407
	Fair Value Measurements using inputs considered as:						Fair Value at May 31, 2014
	Level 1		Level 2		Level 3
Financial Assets							As revised
Cash equivalents
Money market funds	$	445	$	—	$	—	$	445
Total	$	445	$	—	$	—	$	445
Marketable securities
U.S. government agency obligations	—		—		1,809		1,809
Total	—		—		1,809		1,809
Total Financial Assets	$	445	$	—	$	1,809	$	2,254
Financial Liabilities
Interest rate swap agreements	$	—	$	555	$	—	$	555
Contingent liability for acquisition earn out	—		—		67,331		67,331
Total Financial Liabilities	$	—	$	555	$	67,331	$	67,886

There were no transfers in and out of Level 1, 2 and 3 measurements for the three months ended August 31, 2014.

The table below presents the components of Level 3 fair value instruments as of August 31, 2014 (in thousands of dollars):

	Financial Assets			Financial Liabilities
	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)			Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
				As revised
Balance, May 31, 2014	$	1,809		$	67,331
Total gains or losses (realized/unrealized):
Earnings revaluation expense - included in earnings	—			801
Included in other comprehensive income	(139		)	—
Contingent consideration payments	—			(2,100		)
Balance, August 31, 2014	$	1,670		$	66,032

Contingent Liabilities for Acquisition Earn Outs

Certain of our business combinations involve the potential for the payment of future contingent consideration upon the achievement of certain product development milestones or various other performance conditions. Payment of the additional consideration is generally contingent on the acquired company reaching certain performance milestones, including attaining specified revenue levels or product development targets. Contingent consideration is recorded at the estimated fair value of the contingent payments on the acquisition date. The fair value of the contingent milestone consideration is remeasured at the estimated fair value at each reporting period with the change in fair value recognized as income or expense within change in fair value of contingent consideration in the consolidated statements of income. We measure the initial liability and remeasure the liability on a recurring basis using Level 3 inputs as defined under authoritative guidance for fair value measurements.

Contingent consideration liabilities fair value is determined using a discounted cash flow model applied to projected net sales, using probabilities of payment and projected payment dates. Projected net sales are based on our internal projections and extensive analysis of the target market and the sales potential. Increases or decreases in any valuation inputs in isolation may result in a significantly lower or higher fair value measurement in the future.

The recurring Level 3 fair value measurements of the contingent consideration liabilities include the following significant unobservable inputs as of August 31, 2014 (in thousands of dollars):

	Fair value at		Valuation
	Aug 31, 2014		Technique	Unobservable Input	Range
Revenue based payments	$	62,596	Discounted cash flow	Discount rate	4%-10%
				Probability of payment	75-100%
				Projected fiscal year of payment	2015 - 2022
Milestone based payments	3,436		Discounted cash flow	Discount rate	16%-20%
				Probability of payment	75-100%
				Projected fiscal year of payment	2015 - 2017
Total	$	66,032

At August 31, 2014, the estimated potential amount of undiscounted future contingent consideration that we expect to pay as a result of all completed acquisitions is approximately $77.0 million. The milestones associated with the contingent consideration must be reached in future periods ranging from fiscal years 2015 to 2022 in order for the consideration to be paid.

The fair value of contingent milestone payments associated with the acquisitions was remeasured as of August 31, 2014 and $55.1 million was reflected in “Contingent consideration, net of current portion” and $10.9 million was reflected in “Current portion of contingent consideration” on the consolidated balance sheet.

The following table provides a reconciliation of the beginning and ending balances of contingent milestone payments measured at fair value that used significant unobservable inputs (Level 3) (in thousands of dollars):

		As revised
Beginning balance -	May 31, 2014	$	67,331
Contingent payments		(2,100		)
Earnings revaluation expense		801
Ending balance -	August 31, 2014	$	66,032

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Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Aug. 31, 2014	May 31, 2014
CURRENT ASSETS
Cash and cash equivalents	$ 13,808	$ 16,105
Marketable securities	1,670	1,809
Accounts receivable, net of allowances of $1,863 and $1,736, respectively	56,026	61,968
Inventories	70,421	61,234
Deferred income taxes	3,667	4,625
Prepaid income taxes	1,936	510
Prepaid expenses and other	6,777	5,471
Total current assets	154,305	151,722
PROPERTY, PLANT AND EQUIPMENT-AT COST, net	66,794	66,590
OTHER ASSETS	3,345	3,926
INTANGIBLE ASSETS, net	201,440	205,256
GOODWILL	360,473	360,473
DEFERRED INCOME TAXES, long term	9,236	10,403
PREPAID ROYALTIES	521	521
TOTAL ASSETS	796,114	798,891
CURRENT LIABILITIES
Accounts payable	29,282	32,895
Accrued liabilities	17,700	16,652
Income Taxes Payable	624	689
Current portion of long-term debt	5,000	5,000
Current portion of contingent consideration	10,897	12,879
Other current liabilities	204	599
Total current liabilities	63,707	68,714
LONG-TERM DEBT, revolving credit facility	46,410	46,410
LONG-TERM DEBT, term loan, net of current portion	90,000	91,250
DEFERRED INCOME TAXES, long term	1,146	1,146
Contingent consideration, net of current portion	55,135	54,452
Other long term liabilities	32	84
Total liabilities	256,430	262,056
COMMITMENTS AND CONTINGENCIES
STOCKHOLDERS' EQUITY
Preferred stock, par value $.01 per share, 5,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, par value $.01 per share, 45,000,000 shares authorized; issued and outstanding 35,646,491 and 35,442,004 shares at August 31, 2014 and May 31, 2014, respectively	356	353
Additional paid-in capital	510,704	508,354
Retained earnings	31,971	31,501
Treasury stock, 142,305 shares, at cost	(2,104)	(2,104)
Accumulated other comprehensive loss	(1,243)	(1,269)
Total stockholders’ equity	539,684	536,835
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 796,114	$ 798,891

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Accrued Liabilities

3 Months Ended

Aug. 31, 2014

Payables and Accruals [Abstract]

Accrued Liabilities

ACCRUED LIABILITIES

As of August 31, 2014 and May 31, 2014, accrued liabilities consisted of the following:

	Aug 31, 2014		May 31, 2014
			As revised
	(in thousands)
Payroll and related expenses	$	7,595	$	8,224
Royalties	2,909		2,620
Accrued severance	1,614		765
Deferred revenue	190		200
Sales and franchise taxes	1,400		1,327
Interest rate swap liability	375		555
Other	3,617		2,961
Total	$	17,700	$	16,652

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Goodwill and Intangible Assets

3 Months Ended

Aug. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

GOODWILL AND INTANGIBLE ASSETS

Intangible assets other than goodwill and indefinite lived intangible assets are amortized over their estimated useful lives, which range between three and fifteen years, on either a straight-line basis or proportunately to the benefit being realized. We periodically review the estimated useful lives of our intangible assets and review such assets for impairment, based on estimated future cash flows, whenever events or changes in circumstances indicate that the carrying value of the assets may not be recoverable. If an intangible asset is considered to be impaired, the amount of the impairment will equal the excess of the carrying value over the fair value of the asset.

Goodwill and intangible assets that have indefinite useful lives are not amortized, but rather, are tested for impairment annually or more frequently if impairment indicators arise. Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in each business combination. Goodwill and intangible assets have been recorded at either incurred or allocated costs based on respective fair market values at the date of acquisition.

For goodwill, the impairment test requires a comparison of the estimated fair value, based on future cash flows, of the reporting unit to which the goodwill is assigned to the sum of the carrying value of the assets and liabilities of that unit. If the sum of the carrying value of the assets and liabilities of a reporting unit exceeds the fair value of the reporting unit, the carrying value of the reporting unit’s goodwill is reduced to its implied fair value through an adjustment to the goodwill balance, resulting in an impairment charge.

Adjustments to goodwill for the three months ended August 31, 2014 are as follows (in thousands of dollars):

	As revised
Balance, May 31, 2014	$	360,473
	—
Balance, August 31, 2014	$	360,473

As of August 31, 2014 and May 31, 2014, intangible assets consisted of the following :

	August 31, 2014
	Gross carrying value		Accumulated amortization			Net carrying value		Weighted avg useful life
	(in thousands)							(years)
Product technologies	$	150,334	$	(35,173	)	$	115,161	8.8
Customer relationships	86,579		(39,308		)	47,271		9.1
Trademark-NAMIC	28,600		—			28,600		Indefinite
Licenses	7,890		(5,342		)	2,548		8.3
Trademarks	6,345		(2,085		)	4,260		6.6
In-process R&D acquired	3,600		—			3,600		Indefinite
Distributor relationships	900		(900		)	—		3.0
	$	284,248	$	(82,808	)	$	201,440

	May 31, 2014
	Gross carrying value		Accumulated amortization			Net carrying value		Weighted avg useful life
	(in thousands)							(years)
Product technologies	$	150,298	$	(32,930	)	$	117,368	10.2
Customer relationships	86,645		(37,848		)	48,797		11.9
Trademark-NAMIC	28,600		—			28,600		Indefinite
In process R&D acquired	3,600		—			3,600		Indefinite
Licenses	7,639		(5,211		)	2,428		8.4
Trademarks	6,345		(1,882		)	4,463		8.0
Distributor relationships	900		(900		)	—		3.0
	$	284,027	$	(78,771	)	$	205,256

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Immaterial Corrections

3 Months Ended

Aug. 31, 2014

Accounting Changes and Error Corrections [Abstract]

Immaterial Corrections

IMMATERIAL ERROR CORRECTIONS

During the financial closing process for the first quarter of fiscal year 2015, the Company determined that financial management had incorrectly accounted for certain asset, liability and income statement balances, beginning in 2011. The Company has identified amounts and concluded that they were not material individually or in the aggregate to any of its previously issued annual and interim financial statements. Although management has determined the amounts individually and in the aggregate are not material to prior periods, in accordance with authoritative accounting literature on considering the effects of misstatements in prior years when quantifying misstatements in the current year, the financial statements included herein have been adjusted to correct for the impact of these items.

The Company has corrected the relevant financial information from previous reporting periods contained in these financial statements. The immaterial error corrections identified were primarily related to our failure to recognize the expense associated with prepaid and other assets in accordance with the underlying contractual terms (cumulative impact of approximately $1.2 million) and depreciation expense (cumulative impact of approximately $0.4 million), and other individually immaterial items. The impacts of these revisions are shown in the tables below:

	Three months ended August 31, 2013
	As previously reported			Adjustments			As revised
Net sales	$	83,579		$	65		$	83,644
Cost of sales	41,097			(33		)	41,064
Gross profit	42,482			98			42,580
Total operating expenses	41,195			(17		)	41,178
Operating income	1,287			115			1,402
Total other income (expenses)	(1,934		)	(31		)	(1,965		)
Income (loss) before taxes	(647		)	84			(563		)
Income tax benefit (expense)	221			(31		)	190
Net income (loss)	(426		)	53			(373		)
Total comprehensive income (loss), net of tax	(155		)	53			(102		)

	Three months ended November 30, 2013
	As previously reported			Adjustments			As revised
Net sales	$	88,616		$	(45	)	$	88,571
Cost of sales	43,686			—			43,686
Gross profit	44,930			(45		)	44,885
Total operating expenses	43,356			88			43,444
Operating income	1,574			(133		)	1,441
Total other income (expense)	(1,660		)	(131		)	(1,791		)
Income (loss) before taxes	(86		)	(264		)	(350		)
Income tax benefit (expense)	(13		)	102			89
Net income (loss)	(99		)	(162		)	(261		)
Total comprehensive income (loss), net of tax	(358		)	(162		)	(520		)

	Six months ended November 30, 2013
	As previously reported			Adjustments			As revised
Net sales	$	172,195		$	20		$	172,215
Cost of sales	84,783			(33		)	84,750
Gross profit	87,412			53			87,465
Total operating expenses	84,551			71			84,622
Operating income	2,861			(18		)	2,843
Total other income (expense)	(3,594		)	(162		)	(3,756		)
Income (loss) before taxes	(733		)	(180		)	(913		)
Income tax benefit (expense)	208			71			279
Net income (loss)	(525		)	(109		)	(634		)
Total comprehensive income (loss), net of tax	(513		)	(109		)	(622		)

	Three months ended February 28, 2014
	As previously reported			Adjustments			As revised
Net sales	$	88,195		$	(45	)	$	88,150
Cost of sales	43,277			80			43,357
Gross profit	44,918			(125		)	44,793
Total operating expenses	38,066			214			38,280
Operating income	6,852			(339		)	6,513
Total other income (expense)	(1,985		)	15			(1,970		)
Income (loss) before taxes	4,867			(324		)	4,543
Income tax benefit (expense)	(176		)	148			(28		)
Net income (loss)	4,691			(176		)	4,515
Total comprehensive income (loss), net of tax	4,869			(176		)	4,693

	Nine months ended February 28, 2014
	As previously reported			Adjustments			As revised
Net sales	$	260,390		$	(25	)	$	260,365
Cost of sales	128,060			47			128,107
Gross profit	132,330			(72		)	132,258
Total operating expenses	122,617			285			122,902
Operating income	9,713			(357		)	9,356
Total other income (expense)	(5,579		)	(147		)	(5,726		)
Income (loss) before taxes	4,134			(504		)	3,630
Income tax benefit (expense)	32			219			251
Net income (loss)	4,166			(285		)	3,881
Total comprehensive income (loss), net of tax	4,356			(285		)	4,071

	Three months ended May 31, 2014
	As previously reported			Adjustments			As revised
Net sales	$	94,065		$	(5	)	$	94,060
Cost of sales	46,534			116			46,650
Gross profit	47,531			(121		)	47,410
Total operating expenses	43,796			30			43,826
Operating income	3,735			(151		)	3,584
Total other income (expense)	(1,489		)	15			(1,474		)
Income (loss) before taxes	2,246			(136		)	2,110
Income tax benefit (expense)	(3,324		)	(1		)	(3,325		)
Net income (loss)	(1,078		)	(137		)	(1,215		)
Total comprehensive income (loss), net of tax	(1,003		)	(137		)	(1,140		)

	Year ended May 31, 2014
	As previously reported			Adjustments			As revised
Net sales	$	354,455		$	(30	)	$	354,425
Cost of sales	174,594			163			174,757
Gross profit	179,861			(193		)	179,668
Total operating expenses	166,413			315			166,728
Operating income	13,448			(508		)	12,940
Total other income (expense)	(7,068		)	(132		)	(7,200		)
Income (loss) before taxes	6,380			(640		)	5,740
Income tax benefit (expense)	(3,292		)	218			(3,074		)
Net income (loss)	3,088			(422		)	2,666
Total comprehensive income (loss), net of tax	3.353			(422		)	2.931

	Year ended May 31, 2014
	As previously reported			Adjustments			As revised
Net cash provided by (used in) operating activities	$	25,280		$	(599	)	$	24,681
Net cash provided by (used in) investing activities	(17,047		)	599			(16,448		)
Net cash provided by (used in) financing activities	(14,016		)	—			(14,016		)

	As of May 31, 2014
	As previously reported		Adjustments			As revised
Accounts receivable, net of allowances	$	62,148	$	(180	)	$	61,968
Inventories	61,056		178			61,234
Prepaid expenses and other	5,975		(504		)	5,471
Total current assets	152,228		(506		)	151,722
Property, plant and equipment, net	67,208		(618		)	66,590
Other assets	4,876		(950		)	3,926
Goodwill	360,294		179			360,473
Deferred income taxes, long term	9,767		636			10,403
Total assets	800,150		(1,259		)	798,891
Accrued liabilities	16,762		(110		)	16,652
Current portion of contingent payments	16,341		(3,462		)	12,879
Total current liabilities	72,286		(3,572		)	68,714
Contingent consideration, net of current portion	51,080		3,372			54,452
Total liabilities	262,256		(200		)	262,056
Additional paid-in capital	508,263		91			508,354
Retained earnings	32,651		(1,150		)	31,501
Total stockholders' equity	537,894		(1,059		)	536,835

	Year ended May 31, 2013
	As previously reported			Adjustments			As revised
Net sales	$	342,026		$	(110	)	$	341,916
Cost of sales	173,037			365			173,402
Gross profit	168,989			(475		)	168,514
Total operating expenses	161,895			331			162,226
Operating income	7,094			(806		)	6,288
Total other income (expense)	(7,737		)	(138		)	(7,875		)
Income (loss) before taxes	(643		)	(944		)	(1,587		)
Income tax benefit (expense)	31			345			376
Net income (loss)	(612		)	(599		)	(1,211		)
Total comprehensive income (loss), net of tax	(872		)	(599		)	(1,471		)

	Year ended May 31, 2013
	As previously reported			Adjustments			As revised
Net cash provided by (used in) operating activities	$	26,883		$	(231	)	$	26,652
Net cash provided by (used in) investing activities	(22,238		)	—			(22,238		)
Net cash provided by (used in) financing activities	(6,286		)	—			(6,286		)

	As of May 31, 2013
	As previously reported		Adjustments			As revised
Accounts receivable, net of allowances	$	47,791	$	(110	)	$	47,681
Inventories	55,062		17			55,079
Prepaid expenses and other	7,554		(269		)	7,285
Total current assets	141,516		(362		)	141,154
Property, plant and equipment, net	62,650		(259		)	62,391
Other assets	5,559		(651		)	4,908
Intangible assets, net	214,848		(175		)	214,673
Goodwill	355,458		179			355,637
Deferred income taxes, long term	11,007		418			11,425
Total assets	791,584		(850		)	790,734
Accounts payable	24,522		(52		)	24,470
Accrued liabilities	16,426		(70		)	16,356
Total current liabilities	63,437		(122		)	63,315
Total liabilities	264,754		(122		)	264,632
Retained earnings	29,563		(728		)	28,835
Total stockholders' equity	526,830		(728		)	526,102

	Year ended May 31, 2012
	As previously reported			Adjustments			As revised
Net sales	$	221,787		$	130		$	221,917
Cost of sales	95,829			779			96,608
Gross profit	125,958			(649		)	125,309
Total operating expenses	128,920			297			129,217
Operating income	(2,962		)	(946		)	(3,908		)
Total other income (expense)	(2,320		)	806			(1,514		)
Income (loss) before taxes	(5,282		)	(140		)	(5,422		)
Income tax expense (benefit)	188			51			239
Net income (loss)	(5,094		)	(89		)	(5,183		)
Total comprehensive income (loss), net of tax	(5,095		)	(89		)	(5,184		)

	Year ended May 31, 2012
	As previously reported			Adjustments		As revised
Net cash provided by (used in) operating activities	$	11,497		$	105	$	11,602
Net cash provided by (used in) investing activities	(176,360		)	126		(176,234		)
Net cash provided by (used in) financing activities	142,338			—		142,338

	As of May 31, 2012
	As previously reported		Adjustments			As revised
Cash and cash equivalents	$	23,508	$	231		$	23,739
Accounts receivable, net of allowances	48,588		(1,685		)	46,903
Prepaid expenses and other	9,826		(23		)	9,803
Total current assets	159,238		(1,477		)	157,761
Property, plant and equipment, net	55,915		(305		)	55,610
Other assets	10,707		(348		)	10,359
Intangible assets, net	147,266		97			147,363
Goodwill	308,912		179			309,091
Deferred income taxes, long term	39,198		73			39,271
Total assets	721,769		(1,781		)	719,988
Accrued liabilities	18,722		(1,652		)	17,070
Total current liabilities	55,422		(1,652		)	53,770
Total liabilities	198,249		(1,652		)	196,597
Retained earnings	30,175		(129		)	30,046
Total stockholders' equity	523,520		(129		)	523,391

	Year ended May 31, 2011
	As previously reported			Adjustments			As revised
Net sales	$	215,750		$	(130	)	$	215,620
Cost of sales	90,047			—			90,047
Gross profit	125,703			(130		)	125,573
Total operating expenses	113,740			(68		)	113,672
Operating income	11,963			(62		)	11,901
Total other income (expenses)	(1,265		)	—			(1,265		)
Income (loss) before taxes	10,698			(62		)	10,636
Income tax expense (benefit)	(2,581		)	22			(2,559		)
Net income (loss)	8,117			(40		)	8,077
Total comprehensive income (loss), net of tax	8,238			(40		)	8,198

	As of May 31, 2011
	As previously reported		Adjustments			As revised
Accounts receivable, net of allowances	$	27,141	$	(130	)	$	27,011
Total current assets	194,305		(130		)	194,175
Deferred income taxes, long term	5,835		22			5,857
Total assets	437,421		(108		)	437,313
Accrued liabilities	13,841		(107		)	13,734
Total current liabilities	25,507		(107		)	25,400
Total liabilities	31,782		(107		)	31,675
Additional paid-in capital	371,393		(13		)	371,380
Retained earnings	35,269		11			35,280
Total stockholders' equity	405,639		(1		)	405,638

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Marketable Securities

3 Months Ended

Aug. 31, 2014

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

MARKETABLE SECURITIES

Marketable securities, which are principally government agency bonds, auction rate investments and corporate commercial paper, are classified as “available-for-sale securities” in accordance with authoritative guidance issued by FASB and are reported at fair value, with unrealized gains and losses excluded from operations and reported as accumulated other comprehensive income (loss), net of the related tax effects, in stockholders’ equity. Cost is determined using the specific identification method. We hold investments in auction rate securities in order to generate higher than typical money market rate investment returns. Auction rate securities typically are high credit quality, generally achieved with municipal bond insurance. Credit risks are eased by the historical track record of bond insurers, which back a majority of this market. Sell orders for any security traded through an auction process could exceed bids and, in such cases, the auction fails and we may be unable to liquidate our position in the securities in the near term. As of August 31, 2014 and May 31, 2014, we had $1.7 million and $1.8 million, respectively, in investments in two auction rate securities issued by New York state and local government authorities that failed auctions. The authorities are current in their interest payments on the securities.

As of August 31, 2014 and May 31, 2014, marketable securities consisted of the following (in thousands of dollars):

As of August 31, 2014	Amortized cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available-for-sales securities
U.S. government agency obligations	$	1,825	$	—	$	(155	)	$	1,670
	$	1,825	$	—	$	(155	)	$	1,670

As of May 31, 2014	Amortized cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available-for-sales securities
U.S. government agency obligations	$	1,825	$	—	$	(16	)	$	1,809
	$	1,825	$	—	$	(16	)	$	1,809

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Share-Based Compensation

3 Months Ended

Aug. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-Based Compensation

SHARE-BASED COMPENSATION

We have two stock-based compensation plans that provide for the issuance of up to approximately 5.8 million shares of common stock. The 2004 Stock and Incentive Award Plan (the "2004 Plan") provides for the grant of incentive options to our employees and for the grant of non-statutory stock options, restricted stock, stock appreciation rights, performance units, performance shares and other incentive awards to our employees, directors and other service providers. We also have an employee stock purchase plan.

For the quarters ended August 31, 2014 and 2013, share-based payment expense was $1.4 million and $1.2 million, respectively.

In the first quarter of fiscal year 2015 and 2014, the company granted stock options and restricted stock units under the 2004 Plan to certain employees and members of the Board of Directors. Stock option awards are valued using the Black-Scholes option-pricing model and then amortized on a straight-line basis over the requisite service period of the award. Restricted stock unit awards are valued based on the closing trading value of our shares on the date of grant and then amortized on a straight-line basis over the requisite service period of the award.

In the first quarter of fiscal year 2015, the company granted performance share awards under the 2004 Plan to certain employees. The awards may be earned by achieving relative performance levels over the three year requisite service period. The performance criteria are based on the total shareholder return ("TSR") of the company's common stock relative to the TSR of the common stock of a pre-defined industry peer-group. The fair value of these awards are based on the closing trading value of our shares on the date of grant and use a Monte Carlo simulation model.

As of August 31, 2014, there were $15.1 million of unrecognized compensation expenses related to share-based payment arrangements. These costs are expected to be recognized over a weighted-average period of approximately four years. The company has sufficient shares to satisfy expected share-based payment arrangements.

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Long Term Debt

3 Months Ended

Aug. 31, 2014

Debt Disclosure [Abstract]

Long Term Debt

LONG TERM DEBT

On September 19, 2013, we entered into a Credit Agreement (the “Credit Agreement”) with the lenders party thereto, JPMorgan Chase Bank, N.A., as administrative agent, Bank of America, N.A. and Keybank National Association as co-syndication agents, and J.P. Morgan Securities LLC, Merrill Lynch, Pierce, Fenner & Smith Incorporated and Keybank National Association as joint bookrunners and joint lead arrangers.

The Credit Agreement provides for a $100 million senior secured term loan facility (“Term Loan”) and a $100 million senior secured revolving credit facility, which includes up to a $20 million sublimit for letters of credit and a $5 million sublimit for swingline loans (the “Revolving Facility”, and together with the Term Loan, the “Facilities”).

The proceeds of the Revolving Facility may be used for general corporate purposes of AngioDynamics and its subsidiaries. The Facilities have a five year maturity. The Term Loan has a quarterly repayment schedule equal to 5%, 5%, 10%, 15% and 65% of its principal amount in years one through five. Interest on both the Term Loan and Revolving Facility will be based on a base rate or Eurodollar rate plus an applicable margin which increases as our total leverage ratio increases, with the base rate and Eurodollar rate having ranges of 0.50% to 1.25% and 1.5% to 2.25% respectively. After default, the interest rate may be increased by 2.0%. The Revolving Facility will also carry a commitment fee of 0.2% to 0.35% per annum on the unused portion.

Our obligations under the Facilities are unconditionally guaranteed, jointly and severally, by our material direct and indirect domestic subsidiaries (the “Guarantors”). All obligations of AngioDynamics and the Guarantors under the Facilities are secured by first priority security interests in substantially all of the assets of AngioDynamics and the Guarantors.

We have entered into an interest rate swap agreement, (the “Swap Agreement”), with an initial notional amount of $100 million, to limit the effect of rising of interest rates. The Swap Agreement, which qualified for hedge accounting under authoritative guidance, was a contract to exchange floating interest rate payments for fixed interest rate payments on the outstanding balance of the loan over the life of the agreement without the exchange of the underlying notional amounts. The Swap Agreement provides for a fixed rate of 0.74% above the applicable rate provided for in the Credit Agreement.

On September 19, 2013, we borrowed $100 million under the Term Facility and approximately $41.4 million under the Revolving Facility to repay the Former Credit Agreement. As of August 31, 2014, $95 million and $46.4 million were outstanding under the Term Facility and Revolving Facility, respectively. The Credit Agreement includes customary representations, warranties and covenants, and acceleration, indemnity and events of default provisions, including, among other things, two financial covenants. The first financial covenant requires us to maintain, as of the end of each of our fiscal quarters, a ratio of consolidated EBITDA minus consolidated capital expenditures to consolidated interest expense paid or payable in cash plus scheduled principal payments in respect of indebtedness under the Credit Agreement of not less than 1.35 to 1.00. The second financial covenant requires us to maintain, as of the end of each of our fiscal quarters, a ratio of consolidated total indebtedness to consolidated EBITDA of not greater than 3.75 to 1.00. We were in compliance with both covenants as of August 31, 2014.

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Income Taxes

3 Months Ended

Aug. 31, 2014

Income Tax Disclosure [Abstract]

Income Taxes

INCOME TAXES

The following table presents the components of income tax expense(benefit) for the three months ended August 31, 2014 and 2013 (in thousands of dollars):

	Three Months Ended
	Aug 31, 2014			Aug 31, 2013
				As revised
Income tax expense (benefit) based on income (loss) from continuing operations at estimated tax rates of 42.2% in 2014 and 37.4% in 2013	$	598		$	(211	)
Discrete tax expense (benefit):
Adjustment for elimination of the ASC 718 APIC pool	354			—
Adjustments to prior period tax liabilities	(4		)	21
Total income tax expense (benefit)	$	948		$	(190	)

The first quarter estimated effective tax rate prior to discrete items was 42.2% in 2014, as compared to 37.4% for the same period in 2013. The change in the rate is primarily due to the December 31, 2013 expiration of the research and development tax credit. Our ASC 718 APIC pool was depleted in the quarter ended February 28, 2014. Prior to its depletion, the APIC pool was reduced when share-based compensation cost previously recognized by us was greater than the deduction allowed for income tax purposes based on the price of our common stock on the date of exercise or vesting. Due to its depletion we recorded a discrete tax expense of $354 thousand in the first quarter of fiscal 2015.

We currently believe that we will generate taxable income in the future sufficient to realize the benefit of all of our deferred tax assets which consisted primarily of net operating loss carry forwards recorded in business acquisitions. However, some or all of these deferred tax assets could expire unused if we are unable to generate taxable income in the future sufficient to utilize them. We will need to generate $10.0 million of taxable income each year from 2015 to 2023 and then $6.5 million per year until 2033 in order to utilize all of our net operating loss carry forwards. If it becomes more likely than not that our deferred tax assets will expire unused, a valuation allowance will be recorded, which may significantly increase our income tax expense, and therefore adversely affect our results of operations in the period in which it is recorded.

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Earnings Per Share

3 Months Ended

Aug. 31, 2014

Earnings Per Share [Abstract]

Earnings Per Share

EARNINGS PER SHARE

Basic earnings per share are based on the weighted average number of common shares outstanding without consideration of potential common stock. In addition, diluted earnings per share include the dilutive effect of potential common stock consisting of stock options and restricted stock units, provided that the inclusion of such securities is not antidilutive. In periods with a net loss, stock options and restricted stock units are not included in the computation of basic loss per share as the impact would be anti-dilutive.

The following table reconciles basic to diluted weighted-average shares outstanding for the three months ended August 31, 2014 and 2013 (in thousands):

	Three Months Ended
	Aug 31, 2014	Aug 31, 2013
Basic	35,367	34,950
Effect of dilutive securities	518	—
Diluted	35,885	34,950

Excluded from the calculation of diluted earnings per common share are stock options issued to employees and non-employees to purchase 0.9 million shares of common stock for the three months ended August 31, 2014, as their inclusion would be antidilutive. For the three months ended August 31, 2013, options and restricted stock awards issued to employees and non-employees to purchase 2.8 million shares of common stock were also excluded as their inclusion would have been antidilutive.

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Acquisitions - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended			3 Months Ended				1 Months Ended	3 Months Ended	12 Months Ended	1 Months Ended		3 Months Ended	12 Months Ended	1 Months Ended
	Aug. 31, 2014	Aug. 31, 2013	May 31, 2013	May 31, 2014	May 31, 2012	Aug. 31, 2014 Minimum [Member]	Aug. 31, 2014 Maximum [Member]	Aug. 15, 2013 Clinical Devices B.V [Member]	Aug. 15, 2013 In Process Research and Development [Member] Clinical Devices, B.V. [Member]	Aug. 15, 2013 In-process Research and Development [Member] Clinical Devices B.V [Member]	Aug. 31, 2014 Customer Relationships [Member]	May 31, 2013 Customer Relationships [Member]	Aug. 15, 2013 Customer Relationships [Member] Clinical Devices B.V [Member]	Aug. 15, 2013 Customer Relationships [Member] Clinical Devices, B.V. [Member]	Aug. 31, 2014 Trademarks [Member]	May 31, 2013 Trademarks [Member]	Aug. 15, 2013 Trademarks [Member] Clinical Devices B.V [Member]	Aug. 15, 2013 Trademarks [Member] Clinical Devices, B.V. [Member]
Business Acquisition [Line Items]
Cash payments at closing total								$ 3,700,000
Business acquisition purchase price holdback amount								400,000
Total purchase								8,700,000
Present value of contingent consideration liability								5,000,000
Goodwill acquired	360,473,000		355,637,000	360,473,000	309,091,000			4,300,000
Intangible assets other than goodwill								5,100,000	3,600,000
Acquired finite lived intangible assets																		100,000
Estimated useful life			3 years			3 years	15 years			10 years	9 years 1 month 6 days	11 years 10 months 24 days	15 years		6 years 7 months 6 days	8 years	5 years
Finite-Lived Customer Relationships, Gross														1,400,000
Deferred tax liability								1,200,000
Upfront payment included in total estimated purchase consideration	$ 154,000	$ 930,000

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Fair Value - Fair Value of Assets and Liabilities Measured on a Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Aug. 31, 2014	May 31, 2014
Recurring [Member]
Financial Assets
Cash equivalents	$ 445	$ 445
Marketable securities	1,670	1,809
Total Financial Assets	2,115	2,254
Financial Liabilities
Total Financial Liabilities	66,407	67,886
Recurring [Member] | Money Market Funds [Member]
Financial Assets
Cash equivalents	445	445
Recurring [Member] | U.S. Government Agency Obligations [Member]
Financial Assets
Marketable securities	1,670	1,809
Interest Rate Swap Agreements [Member] | Recurring [Member]
Financial Liabilities
Total Financial Liabilities	375	555
Contingent Consideration Earn Out Liability [Member]
Financial Liabilities
Total Financial Liabilities	66,032
Contingent Consideration Earn Out Liability [Member] | Recurring [Member]
Financial Liabilities
Total Financial Liabilities		67,331
Level 1 [Member] | Recurring [Member]
Financial Assets
Cash equivalents	445	445
Marketable securities	0	0
Total Financial Assets	445	445
Financial Liabilities
Total Financial Liabilities	0	0
Level 1 [Member] | Recurring [Member] | Money Market Funds [Member]
Financial Assets
Cash equivalents	445	445
Level 1 [Member] | Recurring [Member] | U.S. Government Agency Obligations [Member]
Financial Assets
Marketable securities	0	0
Level 1 [Member] | Interest Rate Swap Agreements [Member] | Recurring [Member]
Financial Liabilities
Total Financial Liabilities	0	0
Level 1 [Member] | Contingent Consideration Earn Out Liability [Member] | Recurring [Member]
Financial Liabilities
Total Financial Liabilities	0
Level 2 [Member] | Recurring [Member]
Financial Assets
Cash equivalents	0	0
Marketable securities	0	0
Total Financial Assets	0	0
Financial Liabilities
Total Financial Liabilities	375	555
Level 2 [Member] | Recurring [Member] | Money Market Funds [Member]
Financial Assets
Cash equivalents	0	0
Level 2 [Member] | Recurring [Member] | U.S. Government Agency Obligations [Member]
Financial Assets
Marketable securities		0
Level 2 [Member] | Interest Rate Swap Agreements [Member] | Recurring [Member]
Financial Liabilities
Total Financial Liabilities	375	555
Level 2 [Member] | Contingent Consideration Earn Out Liability [Member] | Recurring [Member]
Financial Liabilities
Total Financial Liabilities	0
Level 3 [Member] | Recurring [Member]
Financial Assets
Cash equivalents	0	0
Marketable securities	1,670	1,809
Total Financial Assets	1,670	1,809
Financial Liabilities
Total Financial Liabilities	66,032	67,331
Level 3 [Member] | Recurring [Member] | Money Market Funds [Member]
Financial Assets
Cash equivalents	0	0
Level 3 [Member] | Recurring [Member] | U.S. Government Agency Obligations [Member]
Financial Assets
Marketable securities	1,670	1,809
Level 3 [Member] | Interest Rate Swap Agreements [Member] | Recurring [Member]
Financial Liabilities
Total Financial Liabilities	0	0
Level 3 [Member] | Contingent Consideration Earn Out Liability [Member] | Recurring [Member]
Financial Liabilities
Total Financial Liabilities	$ 66,032	$ 67,331

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Recently Issued Accounting Pronouncements

3 Months Ended

Aug. 31, 2014

Accounting Changes and Error Corrections [Abstract]

Recently Issued Accounting Pronouncements

RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS

In May 2014, the FASB and the International Accounting Standards Board (“IASB”) issued their final standard on revenue from contracts with customers. The standard, issued as an ASU by the FASB and as International Financial Reporting Standards 15 by the IASB, outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. The core principle of the revenue model is that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This ASU is effective for the Company in its first quarter beginning January 1, 2017 and is not expected to have a material impact on the Company’s consolidated financial statements.

In June 2014, the FASB issued an ASU that clarified that entities should treat performance targets that can be met after the requisite service period of a share-based payment award as performance conditions that affect vesting. Therefore, an entity would not record compensation expense related to an award for which transfer to the employee is contingent on the entity’s satisfaction of a performance target until it becomes probable that the performance target is met. This ASU is effective for the Company in its first quarter beginning January 1, 2016 and is not expected to have a material impact on the Company’s consolidated financial statements.

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Accrued Liabilities (Tables)

3 Months Ended

Aug. 31, 2014

Payables and Accruals [Abstract]

Accrued Liabilities

As of August 31, 2014 and May 31, 2014, accrued liabilities consisted of the following:

	Aug 31, 2014		May 31, 2014
			As revised
	(in thousands)
Payroll and related expenses	$	7,595	$	8,224
Royalties	2,909		2,620
Accrued severance	1,614		765
Deferred revenue	190		200
Sales and franchise taxes	1,400		1,327
Interest rate swap liability	375		555
Other	3,617		2,961
Total	$	17,700	$	16,652

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Segment and Geographic Information - Summary of Net Sales by Geographic Area (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended					6 Months Ended	9 Months Ended	12 Months Ended
	Aug. 31, 2014	May 31, 2014	Feb. 28, 2014	Nov. 30, 2013	Aug. 31, 2013	Nov. 30, 2013	Feb. 28, 2014	May 31, 2014	May 31, 2013	May 31, 2012	May 31, 2011
Net Sales
Net sales	$ 87,331	$ 94,060	$ 88,150	$ 88,571	$ 83,644	$ 172,215	$ 260,365	$ 354,425	$ 341,916	$ 221,917	$ 215,620
Supply Agreement [Member]
Net Sales
Net sales	1,183				1,649
Reportable Geographical Components [Member] | United States [Member]
Net Sales
Net sales	68,559				67,167
Reportable Geographical Components [Member] | International [Member]
Net Sales
Net sales	17,589				14,828
Reportable Geographical Components [Member] | Supply Agreement [Member]
Net Sales
Net sales	$ 1,183				$ 1,649

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Income Taxes - Components of Income Tax Expense/(Benefit) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended					6 Months Ended	9 Months Ended	12 Months Ended
	Aug. 31, 2014	May 31, 2014	Feb. 28, 2014	Nov. 30, 2013	Aug. 31, 2013	Nov. 30, 2013	Feb. 28, 2014	May 31, 2014	May 31, 2013	May 31, 2012	May 31, 2011
Income Tax Disclosure [Abstract]
Income tax expense (benefit) based on income (loss) from continuing operations at estimated tax rates of 42.2% in 2014 and 37.4% in 2013	$ 598				$ (211)
Discrete tax expense/(benefit):
Adjustment for elimination of the ASC 718 APIC pool	354				0
Adjustments to prior period tax liabilities	(4)				21
Total income tax expense (benefit)	$ 948	$ 3,325	$ 28	$ (89)	$ (190)	$ (279)	$ (251)	$ 3,074	$ (376)	$ (239)	$ 2,559

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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Aug. 31, 2014	May 31, 2014
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 1,863	$ 1,736
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	45,000,000	45,000,000
Common stock, shares issued	35,646,491	35,060,351
Common stock, shares outstanding	35,646,491	35,060,351
Treasury stock, shares	142,305	142,305

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Inventories

3 Months Ended

Aug. 31, 2014

Inventory Disclosure [Abstract]

Inventories

INVENTORIES

Inventories are stated at lower of cost (using the first-in, first-out method) or market. As of August 31, 2014 and May 31, 2014, inventories consisted of the following:

	Aug 31, 2014		May 31, 2014
			As revised
	(in thousands)
Raw materials	$	29,696	$	24,734
Work in process	12,677		11,992
Finished goods	28,048		24,508
Inventories	$	70,421	$	61,234

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Restructuring - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Aug. 31, 2014
Restructuring Cost and Reserve [Line Items]
Severance expense	$ 1.1

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Income Taxes (Tables)

3 Months Ended

Aug. 31, 2014

Income Tax Disclosure [Abstract]

Components of Income Tax Expense/(Benefit)

The following table presents the components of income tax expense(benefit) for the three months ended August 31, 2014 and 2013 (in thousands of dollars):

	Three Months Ended
	Aug 31, 2014			Aug 31, 2013
				As revised
Income tax expense (benefit) based on income (loss) from continuing operations at estimated tax rates of 42.2% in 2014 and 37.4% in 2013	$	598		$	(211	)
Discrete tax expense (benefit):
Adjustment for elimination of the ASC 718 APIC pool	354			—
Adjustments to prior period tax liabilities	(4		)	21
Total income tax expense (benefit)	$	948		$	(190	)

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Goodwill and Intangible Assets - Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended				3 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended		3 Months Ended
	May 31, 2013	Aug. 31, 2014	May 31, 2014	May 31, 2012	Aug. 31, 2014 Product Technologies [Member]	May 31, 2013 Product Technologies [Member]	May 31, 2014 Product Technologies [Member]	Aug. 31, 2014 Customer Relationships [Member]	May 31, 2013 Customer Relationships [Member]	May 31, 2014 Customer Relationships [Member]	Aug. 31, 2014 Licenses [Member]	May 31, 2013 Licenses [Member]	May 31, 2014 Licenses [Member]	Aug. 31, 2014 Trademarks [Member]	May 31, 2013 Trademarks [Member]	May 31, 2014 Trademarks [Member]	Aug. 31, 2014 Distributor Relationships [Member]	May 31, 2014 Distributor Relationships [Member]	Aug. 31, 2014 Trademark-NAMIC [Member]	May 31, 2014 Trademark-NAMIC [Member]	Aug. 31, 2014 In-process Research and Development [Member]	May 31, 2014 In-process Research and Development [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, finite intangible items					$ 150,334		$ 150,298	$ 86,579		$ 86,645	$ 7,890		$ 7,639	$ 6,345		$ 6,345	$ 900	$ 900
Gross carrying value, indefinite items																			28,600	28,600	3,600	3,600
Gross carrying value, excluding goodwill		284,248	284,027
Accumulated amortization		(82,808)	(78,771)		(35,173)		(32,930)	(39,308)		(37,848)	(5,342)		(5,211)	(2,085)		(1,882)	(900)	(900)	0	0	0	0
Net carrying value, finite intangible items					115,161		117,368	47,271		48,797	2,548		2,428	4,260		4,463	0	0
Net carrying value, indefinite items																			28,600	28,600	3,600	3,600
Net carrying value, excluding goodwill	$ 214,673	$ 201,440	$ 205,256	$ 147,363
Weighted avg useful life	3 years				8 years 9 months 18 days	10 years 2 months 12 days		9 years 1 month 6 days	11 years 10 months 24 days		8 years 3 months 18 days	8 years 4 months 24 days		6 years 7 months 6 days	8 years		3 years

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Commitments and Contingencies

3 Months Ended

Aug. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Litigation

COMMITMENTS AND CONTINGENCIES    

Legal Proceedings

The Company is involved in various legal proceedings, including commercial, intellectual property, product liability, regulatory and environmental matters of a nature considered normal for its business. The Company accrues for amounts related to these matters if it is probable that a liability has been incurred, and an amount can be reasonably estimated. The Company discloses such matters when there is at least a reasonable possibility that a material loss may have been incurred. However, the Company cannot predict the outcome of any litigation or the potential for future litigation

AngioDynamics v. biolitec

On January 2, 2008, we commenced an action in the United States District Court for the Northern District of New York entitled AngioDynamics, Inc. v. biolitec, Inc. In this action, we sought judgment against biolitec for defense and indemnification in two lawsuits which we previously settled. Our claims arise out of a Supply and Distribution Agreement (“SDA”) entered into with biolitec on April 1, 2002. On September 27, 2011, the U.S. District Court granted key portions of our motion for summary judgment in our legal case against biolitec. The Court also dismissed biolitec’s counterclaims against us. The court denied one portion of our summary judgment motion, which sought to recover additional costs from biolitec, leaving this for adjudication at trial. On November 8, 2012, the Court granted partial judgment to us in the amount of $23.2 million. Biolitec appealed this judgment. On August 23, 2013, the U.S. Court of Appeals for the Second Circuit dismissed biolitec’s appeal.

In October 2009, we commenced an action in the United States District Court for the District of Massachusetts entitled AngioDynamics, Inc. v. biolitec AG and Wolfgang Neuberger. The Complaint in this action was amended in March 2010. This action seeks to recover against biolitec, Inc.’s parent entities and CEO for tortiously interfering with biolitec, Inc.’s contractual obligation to defend and indemnify us, and also seeks to pierce the corporate veil of biolitec, Inc. and to invalidate certain alleged fraudulent transfers in order to hold biolitec, Inc.’s parent entities jointly and severally liable for the alleged breach of the SDA. On September 13, 2012, the Massachusetts Court granted our request for a preliminary injunction prohibiting the downstream merger of biolitec AG with its Austrian subsidiary. On April 1, 2013, the U.S. Court of Appeals for the First Circuit affirmed the preliminary injunction. On January 14, 2014, the District Court entered judgment in our favor as to liability. On March 18, 2014, the District Court entered judgment in our favor against Biolitec AG, Biomed Technology Holdings, Ltd., and Wolfgang Neuberger, jointly and severally, in the amount of $74.9 million. The defendants have appealed this judgment.

August 29, 2013, we became co-plaintiffs in an adversary proceeding in the United States Bankruptcy Court for the District of New Jersey entitled Cyganowski, Trustee, et al. v. Biolitec U.S., Inc., et al. In this action, we assert claims of conversion, unjust enrichment, tortious interference, and unfair competition against various biolitec entities for alleged violation of Bankruptcy Court settlement and sale orders under which we acquired certain assets of Biolitec, Inc. On September 3, 2013, we, along with our co-plaintiff, obtained a temporary restraining order against the defendants in this action. The restraining order is still in place and the Bankruptcy Court is considering our request for permanent injunctive relief..

C.R. Bard, Inc. v. AngioDynamics, Inc.

On January 11, 2012, C.R. Bard, Inc. filed a suit in the United States District Court of Utah claiming certain of our implantable port products infringe on patents held by Bard. Bard is seeking unspecified damages and other relief. The Court denied Bard’s motion for pre-trial consolidation with separate actions it filed on the same day against Medical Components, Inc. and Smiths Medical ASD, Inc., but had asked for supplemental briefing on the issue of whether to conduct a common Markman hearing. Meanwhile, we filed petitions for reexamination in the US Patent and Trademark Office which seek to invalidate all three patents asserted in the litigation. Our petitions have been granted and 40 of 41 patent claims have been and remain rejected. The Patent Office has issued a Final Rejection of all the claims subject to reexamination and Bard has filed appeals. The parties are currently in the midst of the briefing process for these appeals. The case has been stayed pending final resolution of the PTO process. We believe these claims are without merit and intend to defend them vigorously. We have not recorded an expense related to the outcome of this litigation because it is not yet possible to determine if a potential loss is probable nor reasonably estimable.

BTG International, Inc.

We received a subpoena from the U.S. Department of Justice (the “DOJ”) requesting documents in relation to a purported criminal investigation the DOJ is conducting regarding BTG International, Inc.’s LC Bead^® product beginning in 2003.  RITA Medical Systems and AngioDynamics, Inc., after its acquisition of RITA, was the exclusive distributor of LC Beads in the United States from 2006 through December 31, 2011.  We are cooperating fully with this investigation and at this time are unable to predict its scope, duration or outcome.