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, 2018

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	¨
Emerging growth company	o

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 September 28, 2018
Common Stock, par value $.01	37,121,628

AngioDynamics, Inc. and Subsidiaries

TABLE OF CONTENTS

		Page
	Part I: Financial Information
Item 1.	Financial Statements
	Consolidated Statements of Income (Loss) (unaudited)	3
	Consolidated Statements of Comprehensive Income (Loss) (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	32
Item 4.	Controls and Procedures	33
	Part II: Other Information
Item 1.	Legal Proceedings	34
Item 1A.	Risk Factors	36
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	37
Item 3.	Defaults on Senior Securities	37
Item 4.	Mine Safety Disclosures	37
Item 5.	Other Information	37
Item 6.	Exhibits	38

2

PART 1. FINANCIAL INFORMATION

Item 1. Financial Statements.

AngioDynamics, Inc. and Subsidiaries

CONSOLIDATED STATEMENTS OF INCOME (LOSS)

(unaudited)

(in thousands of dollars, except per share data)

	Three Months Ended
	Aug 31, 2018			Aug 31, 2017
Net sales	$	85,340		$	85,411
Cost of sales (exclusive of intangible amortization)	40,873			44,182
Gross profit	44,467			41,229
Operating expenses:
Research and development	7,662			6,441
Sales and marketing	19,433			19,402
General and administrative	8,496			8,056
Amortization of intangibles	4,116			4,096
Change in fair value of contingent consideration	12			105
Acquisition, restructuring and other items, net	4,422			2,989
Total operating expenses	44,141			41,089
Operating income (loss)	326			140
Other (expenses) income:
Interest expense, net	(917		)	(723		)
Other income, net	114			567
Total other expenses, net	(803		)	(156		)
Loss before income tax expense	(477		)	(16		)
Income tax expense (benefit)	(8		)	19
Net loss	$	(469	)	$	(35	)
Earnings per share
Basic	$	(0.01	)	$	—
Diluted	$	(0.01	)	$	—
Weighted average shares outstanding
Basic	37,323			36,919
Diluted	37,323			36,919

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

3

AngioDynamics, Inc. and Subsidiaries

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(unaudited)

(in thousands of dollars)

	Three Months Ended
	Aug 31, 2018			Aug 31, 2017
Net loss	$	(469	)	$	(35	)
Other comprehensive income (loss), before tax:
Unrealized gain on marketable securities	33			—
Foreign currency translation	(125		)	283
Other comprehensive income (loss), before tax	(92		)	283
Income tax expense related to items of other comprehensive income	—			—
Other comprehensive income (loss), net of tax	(92		)	283
Total comprehensive income (loss), net of tax	$	(561	)	$	248

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

4

AngioDynamics, Inc. and Subsidiaries

CONSOLIDATED BALANCE SHEETS

(unaudited)

(in thousands of dollars, except share data)

	Aug 31, 2018			May 31, 2018
Assets
Current assets
Cash and cash equivalents	$	24,762		$	74,096
Marketable securities	1,350			1,317
Accounts receivable, net of allowances of $2,222 and $2,466, respectively	40,164			39,401
Inventories	49,721			48,916
Prepaid expenses and other	4,888			4,302
Total current assets	120,885			168,032
Property, plant and equipment, net	42,163			42,461
Other assets	3,637			3,417
Intangible assets, net	144,194			130,310
Goodwill	382,992			361,252
Total assets	$	693,871		$	705,472
Liabilities and stockholders' equity
Current liabilities
Accounts payable	$	16,916		$	15,775
Accrued liabilities	19,900			34,426
Current portion of long-term debt	5,000			5,000
Current portion of contingent consideration	3,973			2,100
Total current liabilities	45,789			57,301
Long-term debt, net of current portion	85,444			86,621
Deferred income taxes	17,154			17,173
Contingent consideration, net of current portion	—			1,161
Other long-term liabilities	595			621
Total liabilities	148,982			162,877
Commitments and contingencies (Note 14)
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, 75,000,000 shares authorized; 37,861,057 and 37,594,493 shares issued and 37,491,057 and 37,224,493 shares outstanding at August 31, 2018 and May 31, 2018, respectively	372			370
Additional paid-in capital	546,615			543,762
Retained earnings	4,660			5,129
Treasury stock, 370,000 shares at August 31, 2018 and May 31, 2018, respectively	(5,714		)	(5,714		)
Accumulated other comprehensive loss	(1,044		)	(952		)
Total Stockholders’ Equity	544,889			542,595
Total Liabilities and Stockholders' Equity	$	693,871		$	705,472

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

5

AngioDynamics, Inc. and Subsidiaries

CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited)

(in thousands of dollars)

	Three Months Ended
	Aug 31, 2018			Aug 31, 2017
Cash flows from operating activities:
Net loss	$	(469	)	$	(35	)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,599			5,793
Stock based compensation	2,150			1,797
Change in fair value of contingent consideration	12			105
Deferred income taxes	(10		)	(82		)
Change in accounts receivable allowances	(228		)	278
Other	25			(567		)
Changes in operating assets and liabilities:
Accounts receivable	(562		)	3,103
Inventories	(761		)	(781		)
Prepaid expenses and other	(1,200		)	620
Accounts payable, accrued and other liabilities	(13,429		)	(7,195		)
Net cash provided by (used in) operating activities	(8,873		)	3,036
Cash flows from investing activities:
Additions to property, plant and equipment	(682		)	(501		)
Cash paid for acquisition	(37,000		)	—
Net cash used in investing activities	(37,682		)	(501		)
Cash flows from financing activities:
Repayment of long-term debt	(1,250		)	(1,250		)
Payment of acquisition related contingent consideration	(2,100		)	(2,100		)
Proceeds from exercise of stock options and employee stock purchase plan	705			812
Net cash used in financing activities	(2,645		)	(2,538		)
Effect of exchange rate changes on cash and cash equivalents	(134		)	659
Increase (decrease) in cash and cash equivalents	(49,334		)	656
Cash and cash equivalents at beginning of period	74,096			47,544
Cash and cash equivalents at end of period	$	24,762		$	48,200
Supplemental disclosure of non-cash investing and financing activities:
Contractual obligations for acquisition of fixed assets	$	38		$	38

The accompanying notes are an integral part of these consolidated 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, 2018	37,594,493	$	370	$	543,762		$	5,129		$	(952	)	(370,000	)	$	(5,714	)	$	542,595
Net loss							(469		)									(469		)
Exercise of stock options	71,336	1		607														608
Issuance/Cancellation of restricted stock units	149,446			(460		)												(460		)
Issuance/Cancellation of performance share units	5,235																	—
Purchases of common stock under ESPP	40,547	1		556														557
Stock-based compensation				2,150														2,150
Other comprehensive loss, net of tax										(92		)						(92		)
Balance at August 31, 2018	37,861,057	$	372	$	546,615		$	4,660		$	(1,044	)	(370,000	)	$	(5,714	)	$	544,889

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

7

AngioDynamics, Inc. and Subsidiaries

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(unaudited)

1. CONSOLIDATED FINANCIAL STATEMENTS

The consolidated balance sheet as of August 31, 2018, the consolidated statement of stockholders’ equity for the three months ended August 31, 2018 and the consolidated statements of income, consolidated statements of comprehensive income (loss) for the three months ended August 31, 2018 and 2017, and consolidated statements of cash flows for the three months ended August 31, 2018 and 2017 have been prepared by us and are unaudited. The consolidated balance sheet as of May 31, 2018 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 (consisting of 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, 2018 (and for all periods presented) have been made.

The unaudited interim consolidated financial statements for the three months ended August 31, 2018 and 2017 include the accounts of AngioDynamics, Inc. and its wholly owned subsidiaries, collectively, the “Company”. All intercompany balances and transactions have been eliminated.

Recent Events

On August 14, 2018, the Company acquired the BioSentry Tract Sealant System (BioSentry) technology from Surgical Specialties, LLC, a medical device company headquartered in Westwood, Massachusetts for a total purchase price of $40.0 million of which $37.0 million was paid on August 14, 2018 and $3.0 million was recorded as contingent consideration. This is part of the Company’s strategic focus on building a continuum of care within the oncology space. Refer to Note 2 for further disclosure on the acquisition.

On September 21, 2018, the Company acquired RadiaDyne, a privately held medical diagnostic and device company that designs and develops patient dose monitoring technology to improve cancer treatment outcomes for an aggregate purchase price of $50.0 million with $40.0 million of future contingent consideration related to technology and revenue milestones. This acquisition expands the Company’s growing Oncology business by adding RadiaDyne’s early-stage, proprietary OARtrac® real-time radiation dose monitoring platform and other market-leading oncology solutions, including the IsoLoc®/ImmobiLoc® and Alatus® balloon stabilizing technologies.

2. ACQUISITIONS

On August 14, 2018, the Company acquired the BioSentry product from Surgical Specialties, LLC (“SSC”), for an aggregate purchase price of $40.0 million of which $37.0 million was paid on August 14, 2018 and $3.0 million was recorded as contingent consideration. The contingent consideration liability was recorded at fair value of $2.8 million and will be payable to SSC upon fulfillment of hydrogel orders.

The Company accounted for the BioSentry acquisition under the acquisition method of accounting for business combinations. Accordingly, the cost to acquire the assets was allocated to the underlying net assets in proportion to estimates of their respective fair values. The excess of the purchase price over the estimated fair value of the net assets acquired was recorded as goodwill. Goodwill is non-deductible for income tax purposes.

The Company has not disclosed the amount of revenue and earnings for sales of BioSentry products since acquisition, nor proforma information, because these amounts are not significant to the Company's financial statements. Acquisition-related costs associated with the BioSentry acquisition, which are included in acquisition, restructuring and other expenses, net in the accompanying consolidated statements of income, were approximately $1.0 million. The following table summarizes the preliminary aggregate purchase price allocated to the net assets acquired:

8

	Aug 14, 2018
(in thousands)
Inventory	$	50
Property, plant and equipment	10
Intangible assets:
BioSentry trademark	1,700
BioSentry product technology	13,800
Customer relationships	2,500
Goodwill	21,740
Net assets acquired	$	39,800

The allocation of the purchase price to the assets acquired and liabilities assumed, including the amount allocated to goodwill, is subject to change within the measurement period (up to one year from the acquisition date) as additional information that existed at the date of the acquisition related to the values of assets acquired and liabilities assumed is obtained.

The values assigned to the BioSentry trademark and product technologies were derived using the relief-from-royalties method under the income approach. This approach is used to estimate the cost savings that accrue for the owner of an intangible asset who would otherwise have to pay royalties or licensing fees on revenues earned through the use of the asset if they had not owned the rights to use the assets. The net after-tax royalty savings are calculated for each year in the remaining economic life of the intangible asset and discounted to present value. The trademark and product technologies are deemed to have a 15-year useful life and are amortized on a straight-line basis over their useful life.

The value assigned to customer relationships was derived using the multi-period excess earnings method under the income approach. This approach estimates the excess earnings generated over the lives of the customers that existed as of the acquisition date and discounts such earnings to present value. Customer relationships are amortized on a straight-line basis over ten years.

The goodwill arising from the acquisition consists largely of synergies and economies of scale the Company hopes to achieve from combining the acquired assets with the Company's current operations.

3. REVENUE FROM CONTRACTS WITH CUSTOMERS

Adoption of ASC Topic 606 "Revenue from Contracts with Customers"

The Company adopted ASC 606, Revenue from Contracts with Customers on June 1, 2018 using the modified retrospective method for all contracts not completed as of the date of adoption. The reported results for fiscal 2019 reflect the application of ASC 606 guidance while the reported results for fiscal 2018 were prepared under the guidance of ASC 605, Revenue Recognition (“ASC 605”). For discussion of the Company’s accounting policy for revenue recognition under ASC 605, refer to Item 8 of the Annual Report on Form 10-K for the year ended May 31, 2018. The adoption of ASC 606 did not have an impact on the Company’s consolidated balance sheet, results of operations, equity or cash flows as of the adoption date or for the periods presented, other than the enhanced disclosures included in this footnote.

Revenue Recognition

Under ASC 606, revenue is recognized when a customer obtains control of promised goods or services, in an amount that reflects the consideration which the entity expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that an entity determines are within the scope of ASC 606, the Company performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation.

The Company has one primary revenue stream which is the sales of its products.

9

Disaggregation of Revenue

The following tables summarize net product revenue by Global Business Unit ("GBU") and geography for the three months ended August 31, 2018:

(in thousands)	United States		International		Total
Net sales
Vascular Interventions & Therapies	$	42,039	$	7,956	$	49,995
Vascular Access	20,447		3,343		23,790
Oncology	5,198		6,357		11,555
Total	$	67,684	$	17,656	$	85,340

Net Product Revenue

The Company's products consist of 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 longer-term use. The Company sells its products to its distribution partners and to end users, such as interventional radiologists, interventional cardiologists, vascular surgeons, urologists, interventional and surgical oncologists and critical care nurses.

Contracts and Performance Obligations

The Company contracts with its customers based on customer purchase orders, which in many cases are governed by master purchasing agreements, to be contracts with customers. The Company’s contracts with customers are generally for product only, and do not include other performance obligations such as services or other material rights. As part of its assessment of each contract, the Company evaluates certain factors including the customer’s ability to pay (or credit risk). For each contract, the Company considers the promise to transfer products, each of which is distinct, to be the identified performance obligations.

Transaction Price and Allocation to Performance Obligations

Transaction prices of products are typically based on contracted rates. Product revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring products to a customer. To the extent the transaction price includes variable consideration, the Company estimates the amount of variable consideration that should be included in the transaction price utilizing the expected value method. As such, revenue is recorded net of rebates, returns and other deductions.

If a contract contains a single performance obligation, the entire transaction price is allocated to the single performance obligation. Contracts that contain multiple performance obligations require an allocation of the transaction price based on the estimated relative standalone selling prices of the promised products underlying each performance obligation. The Company has standard pricing for its products and determines standalone selling prices based on the price at which the performance obligation is sold separately.

Revenue Recognition

Revenue is recognized when control of the product is transferred to the customer (i.e., when the Company’s performance obligation is satisfied), which occurs at a point in time, and may be upon shipment from the Company’s manufacturing site or delivery to the customer’s named location, based on the contractual shipping terms of a contract.

In determining whether control has transferred, the Company considers if there is a present right to payment from the customer and when physical possession, legal title and risks and rewards of ownership have transferred to the customer.

The Company typically invoices customers upon satisfaction of identified performance obligations. As the Company’s standard payment terms are 30 to 90 days from invoicing, the Company does not provide any significant financing to its customers.

Sales, value add, and other taxes collected on behalf of third parties are excluded from revenue.

10

Variable Consideration

Revenues from product sales are recorded at the net sales price (transaction price), which includes estimates of variable consideration for which reserves are established for discounts, returns, rebates and allowances that are offered within contracts between the Company and its customers. These reserves are based on the amounts earned or to be claimed on the related sales and are classified as a current liability.

Rebates and Allowances:The Company provides certain customers with rebates and allowances that are explicitly stated in the Company’s contracts and are recorded as a reduction of revenue in the period the related product revenue is recognized. The Company establishes a liability for such amounts, which is included in accrued expenses in the accompanying condensed consolidated balance sheets. These rebates and allowances result from performance-based offers that are primarily based on attaining contractually specified sales volumes and administrative fees the Company is required to pay to group purchasing organizations. The Company records the amount of rebates and allowances that are explicitly stated in the Company’s contracts based on actual purchases.

Product Returns: The Company generally offers customers a limited right of return. Product returns after 30 days must be pre-approved by the Company and customers may be subject to a 20% restocking charge. To be accepted, a returned product must be unadulterated, undamaged and have at least twelve months remaining prior to its expiration date. The Company estimates the amount of its product sales that may be returned by its customers and records this estimate as a reduction of revenue in the period the related product revenue is recognized. The Company currently estimates product return liabilities using its historical product return information and considers other factors that it believes could significantly impact its expected returns, including product recalls. During the quarter, such product returns were not material.

Contract Balances with Customers

A receivable is recognized in the period the Company ships the product. Payment terms on invoiced amounts are based on contractual terms with each customer and generally coincide with revenue recognition. Accordingly, the Company does not have any contract assets associated with the future right to invoice its customers. In some cases, if control of the product has not yet transferred to the customer or the timing of the payments made by the customer precedes the Company’s fulfillment of the performance obligation, the Company recognizes a contract liability that is included in deferred revenue in the accompanying condensed consolidated balance sheets.

The following table presents changes in the Company’s receivables, contract assets and contract liabilities with customers:

	Aug 31, 2018		May 31, 2018
(in thousands)
Receivables	$	40,164	$	39,401
Contract assets	$	—	$	—
Contract liabilities	$	1,153	$	1,203

During the three months ended August 31, 2018, the Company recognized $0.1 million in revenue that was included in contract liabilities as of the beginning of the period.

Costs to Obtain or Fulfill a Customer Contract

Prior to the adoption of ASC 606, the Company expensed incremental commissions paid to sales representatives for obtaining product sales. Under ASC 606, the Company recognizes an asset for incremental costs of obtaining a contract with a customer if it expects to recover those costs. The Company’s sales incentive compensation plans qualify for capitalization since these plans are directly related to sales achieved during a period of time. However, the Company has elected the practical expedient under ASC 340-40-25-4 to expense the costs as they are incurred within selling and marketing expenses since the amortization period is less than one year.

The Company accounts for shipping and handling activities related to contracts with customers as costs to fulfill the promise to transfer the associated products. Shipping and handling costs, associated with the distribution of finished products to customers, are recorded in costs of goods sold and are recognized when the related finished product is shipped to the customer. Amounts charged to customers for shipping are recorded in net sales.

11

4. INVENTORIES

Inventories are stated at lower of cost and net realizable value (using the first-in, first-out method). Inventories consisted of the following:

	Aug 31, 2018		May 31, 2018
(in thousands)
Raw materials	$	21,556	$	18,678
Work in process	9,829		10,808
Finished goods	18,336		19,430
Inventories	$	49,721	$	48,916

The Company periodically reviews for both obsolescence and loss of value. The Company makes assumptions about the future demand for and market value of the inventory. Based on these assumptions, the Company estimates the amount of obsolete, expiring and slow moving inventory. The total inventory reserve at both August 31, 2018 and May 31, 2018 was $6.1 million. Of the $6.1 million reserve as of August 31, 2018 and May 31, 2018, $1.6 million relates to the inventory reserve for Acculis inventory as a result of the recall announced in the fourth quarter of fiscal year 2017 and $0.7 million relates to a specific reserve related to the termination of an agreement with a Japanese distributor in the second quarter of fiscal year 2018.

5. GOODWILL AND INTANGIBLE ASSETS

Intangible assets other than goodwill are amortized over their estimated useful lives on either a straight-line basis or proportionately to the benefit being realized. Useful lives range from two to eighteen years. The Company periodically reviews the estimated useful lives of our intangible assets and review such assets or asset groups for impairment whenever events or changes in circumstances indicate that the carrying value of the assets or asset groups may not be recoverable. If an intangible asset or asset group 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 is not amortized, but rather, is 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.

The changes in the carrying amount of goodwill for the three months ended August 31, 2018 were as follows:

(in thousands)
Goodwill balance at June 1, 2018	$	361,252
Additions for BioSentry acquisition (Note 2)	21,740
Goodwill balance at August 31, 2018	$	382,992

The Company's annual testing for impairment of goodwill was completed as of December 31, 2017. The Company operates as a single operating segment with one reporting unit and consequently evaluates goodwill for impairment based on an evaluation of the fair value of the Company as a whole. The Company determines the fair value of the reporting unit based on the market valuation approach and concluded that it was not more-likely-than-not that the fair value of the Company's reporting unit was less than its carrying value.

Even though the Company determined that there was no goodwill impairment as of December 31, 2017, the future occurrence of a potential indicator of impairment, such as a significant adverse change in legal, regulatory, business or economic conditions or a more-likely-than-not expectation that the reporting unit or a significant portion of the reporting unit will be sold or disposed of, would require an interim assessment for the reporting unit prior to the next required annual assessment as of December 31, 2018. The Company continued to assess for potential impairment through August 31, 2018 and noted no events that would be considered a triggering event.

Intangible assets consisted of the following:

12

	August 31, 2018
	Gross carrying value		Accumulated amortization			Net carrying value
(in thousands)
Product technologies	$	160,973	$	(71,204	)	$	89,769
Customer relationships	58,917		(24,199		)	34,718
Trademarks	30,100		(12,411		)	17,689
Licenses	5,752		(4,527		)	1,225
Distributor relationships	1,250		(457		)	793
	$	256,992	$	(112,798	)	$	144,194

	May 31, 2018
	Gross carrying value		Accumulated amortization			Net carrying value
(in thousands)
Product technologies	$	147,175	$	(68,880	)	$	78,295
Customer relationships	56,428		(23,237		)	33,191
Trademarks	28,400		(11,809		)	16,591
Licenses	5,752		(4,357		)	1,395
Distributor relationships	1,250		(412		)	838
	$	239,005	$	(108,695	)	$	130,310

Amortization expense for the three months ended August 31, 2018 and 2017 was $4.1 million and $4.1 million, respectively.

Expected future amortization expense related to the intangible assets is as follows:

(in thousands)
Remainder of 2019	$	13,457
2020	16,280
2021	15,121
2022	14,236
2023	13,786
2024 and thereafter	71,314
	$	144,194

6. ACCRUED LIABILITIES

Accrued liabilities consisted of the following:

	Aug 31, 2018		May 31, 2018
(in thousands)
Payroll and related expenses	$	6,381	$	10,235
Royalties	1,121		1,537
Accrued severance	1,428		1,940
Sales and franchise taxes	1,425		683
Outside services	4,557		2,396
Litigation matters	—		12,500
Other	4,988		5,135
	$	19,900	$	34,426

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7. LONG TERM DEBT

On November 7, 2016, the Company 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 JPMorgan Chase Bank, N.A., Merrill Lynch, Pierce, Fenner & Smith Incorporated and Keybank National Association as joint bookrunners and joint lead arrangers.

The Credit Agreement provides for a $100.0 million senior secured term loan facility (“Term Loan”) and a $150.0 million senior secured revolving credit facility, which includes up to a $20.0 million sublimit for letters of credit and a $5.0 million sublimit for swingline loans (the “Revolving Facility”, and together with the Term Loan, the “Facilities”).

On November 7, 2016, the Company borrowed $100.0 million under the Term Loan and approximately $16.5 million under the Revolving Facility to repay the balance of $116.5 million under the former credit agreement. As of August 31, 2018 and May 31, 2018 the carrying value of long-term debt approximates its fair market value.

The interest rate on the Term Loan at August 31, 2018 was 3.58%.

The Company was in compliance with the Credit Agreement covenants as of August 31, 2018.

The Company's maturities of principal obligations under the Credit Agreement are as follows, as of August 31, 2018:

(in thousands)
Remainder of 2019	$	3,750
2020	7,500
2021	11,250
2022	68,750
Total term loan	91,250
Revolving facility	—
Total debt	91,250
Less: Unamortized debt issuance costs	(806		)
Total	90,444
Less: Current portion of long-term debt	(5,000		)
Total long-term debt, net	$	85,444

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8. INCOME TAXES

The Company provides for income taxes at the end of each interim period based on the estimated effective tax rate for the full fiscal year adjusted for any discrete events, which are recorded in the period that they occur.  The estimated annual effective tax rate prior to discrete items was 2.3% in the first quarter of fiscal 2019, as compared to 52.9% for the same period in fiscal 2018. In fiscal 2019, the Company’s effective tax rate differs from the U.S. statutory rate primarily due to the impact of the valuation allowance, foreign taxes and state taxes.

On December 22, 2017, the United States enacted the Tax Cuts and Jobs Act of 2017 (the “Tax Reform Act”). The Tax Reform Act is significant and has wide-ranging effects.

The Company is still studying all of the ramifications of the Tax Reform Act, but expects the primary material impact of the Act to be the remeasurement of the Company’s naked credit deferred tax liability, which was recorded in fiscal 2018 as a result of the reduction in U.S. corporate tax rates from 35% to 21%. The Tax Reform Act imposes a one-time transition tax on the deemed repatriation of post-1986 undistributed foreign subsidiaries’ earnings. Based on the information available as of December 31, 2017, the Company estimated undistributed foreign earnings in fiscal 2018. The taxable income arising from this deemed repatriation is expected to result in the utilization of net operating loss carryforwards and other tax credits, offset by changes in the valuation allowance, resulting in no net impact to tax expense. No changes have been made to these estimates and the Company expects to complete its accounting for these items within the prescribed measurement period.

The Tax Reform Act also creates a new requirement that certain income earned by foreign subsidiaries (“GILTI”), must be included in U.S. gross income. The FASB allows an accounting policy election of either recognizing deferred taxes for temporary differences expected to reverse as GILTI in future years or recognizing such taxes as a current period expense when incurred. The Company has not yet adopted an accounting policy.

The Company regularly assesses its ability to realize its deferred tax assets. Assessing the realization of deferred tax assets requires significant management judgment. In determining whether its deferred tax assets are more likely than not realizable, the Company evaluated all available positive and negative evidence, and weighted the evidence based on its objectivity. Evidence the Company considered included its history of net operating losses, which resulted in the Company recording a full valuation allowance for its deferred tax assets in fiscal 2016 and each year thereafter.

Based on the review of all available evidence, the Company determined that it has not yet attained a sustained level of profitability and the objectively verifiable negative evidence outweighed the positive evidence and therefore the Company has provided a valuation allowance on its federal and state net operating loss carryforwards, federal and state R&D credit carryforwards and other net deferred tax assets that have a limited life and are not supportable by the naked credit deferred tax liability sourced income as of August 31, 2018. The Company will continue to assess the level of the valuation allowance required. If sufficient positive evidence exists in future periods to support a release of some or all of the valuation allowance, such a release would likely have a material impact on the Company’s results of operations.

9. SHARE-BASED COMPENSATION

The Company has two stock-based compensation plans that provide for the issuance of up to approximately 9.5 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. The Company also has an employee stock purchase plan.

For the three months ended August 31, 2018 and 2017, share-based compensation expense was $2.2 million and $1.8 million, respectively.

During the three months ended August 31, 2018 and 2017, 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 the Company's 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 three months of fiscal year 2019, the Company granted market-based 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

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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 the Company's shares on the date of grant and use a Monte Carlo simulation model.

As of August 31, 2018, there was $20.0 million of unrecognized compensation expense 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.

10. EARNINGS PER SHARE

Basic earnings per share is based on the weighted average number of common shares outstanding without consideration of potential common stock. Diluted earnings per share includes the dilutive effect of potential common stock consisting of stock options, restricted stock units and performance stock units, provided that the inclusion of such securities is not anti-dilutive. In periods with a net loss, stock options and restricted stock units are not included in the computation of diluted 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, 2018 and 2017 (in thousands):

	Three Months Ended
(in thousands)	Aug 31, 2018	Aug 31, 2017
Basic	37,323	36,919
Effect of dilutive securities	—	—
Diluted	37,323	36,919
Securities excluded as their inclusion would be anti-dilutive	2,309	1,085

11. SEGMENT AND GEOGRAPHIC INFORMATION

The Company considers the business to be a single operating segment engaged in the development, manufacture and sale of medical devices for vascular access, peripheral vascular disease and oncology on a global basis. The Company's chief operating decision maker, the President and Chief Executive Officer (CEO), evaluates the various global product portfolios on a net sales basis. Executives reporting to the CEO include those responsible for commercial operations, manufacturing operations, regulatory and quality 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 Global Business Unit:

	Three Months Ended
(in thousands)	Aug 31, 2018		Aug 31, 2017
Net sales
Vascular Interventions & Therapies	$	49,995	$	49,865
Vascular Access	23,790		23,238
Oncology	11,555		12,308
Total	$	85,340	$	85,411

The table below presents net sales by geographic area based on external customer location:

	Three Months Ended
(in thousands)	Aug 31, 2018		Aug 31, 2017
Net sales
United States	$	67,684	$	68,931
International	17,656		16,480
Total	$	85,340	$	85,411

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12. FAIR VALUE

On a recurring basis, the Company measures certain financial assets and financial liabilities at fair value based upon quoted market prices, where available. Where quoted market prices or other observable inputs are not available, the Company applies valuation techniques to estimate fair value. FASB ASC Topic 820, Fair Value Measurements and Disclosures, establishes a three-level valuation hierarchy for disclosure of fair value measurements. The categorization of financial assets and financial liabilities within the valuation hierarchy is based upon the lowest level of input that is significant to the measurement of fair value. The three levels of the hierarchy are defined as follows:

• Level 1 - Inputs to the valuation methodology are quoted market prices for identical assets or liabilities.

• Level 2 - Inputs to the valuation methodology are other observable inputs, including quoted market prices for similar assets or liabilities and market-corroborated inputs.

• Level 3 - Inputs to the valuation methodology are unobservable inputs based on management’s best estimate of inputs market participants would use in pricing the asset or liability at the measurement date, including assumptions about risk.

The Company's financial instruments include cash and cash equivalents, marketable securities, accounts receivable, accounts payable and contingent consideration. The carrying amount of cash and cash equivalents, accounts receivable, and accounts payable approximates fair value due to the immediate or short-term maturities. The Company's recurring fair value measurements using significant unobservable inputs (Level 3) relate to our marketable securities, which are comprised of auction rate securities, and contingent consideration.

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, 2018 and May 31, 2018:

	Fair Value Measurements using inputs considered as:						Fair Value at August 31, 2018
(in thousands)	Level 1		Level 2		Level 3
Financial Assets
Marketable securities	$	—	$	—	$	1,350	$	1,350
Total Financial Assets	$	—	$	—	$	1,350	$	1,350
Financial Liabilities
Contingent consideration for acquisition earn out	$	—	$	—	$	3,973	$	3,973
Total Financial Liabilities	$	—	$	—	$	3,973	$	3,973
	Fair Value Measurements using inputs considered as:						Fair Value at May 31, 2018
(in thousands)	Level 1		Level 2		Level 3
Financial Assets
Short-term investments*	$	2,100	$	—	$	—	$	2,100
Marketable securities	—		—		1,317		1,317
Total Financial Assets	$	2,100	$	—	$	1,317	$	3,417
Financial Liabilities
Contingent consideration for acquisition earn out	$	—	$	—	$	3,261	$	3,261
Total Financial Liabilities	$	—	$	—	$	3,261	$	3,261

*Included in cash and cash equivalents.

There were no transfers between Level 1, 2 and 3 for the three months ended August 31, 2018.

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The table below presents the changes in fair value components of Level 3 instruments in the three months ended August 31, 2018:

	Three Months Ended August 31, 2018
	Financial Assets		Financial Liabilities
(in thousands)	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)		Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Balance, May 31, 2018	$	1,317	$	3,261
Total gains or losses (realized/unrealized):
Contingent consideration liability recorded as the result of an acquisition (Note 2)	—		2,800
Change in present value of contingent consideration (1)	—		12
Fair market value adjustments	33		—
Contingent consideration payments	—		(2,100		)
Balance, August 31, 2018	$	1,350	$	3,973

(1) Change in the fair value of contingent consideration is included in earnings and comprised of changes in estimated earn out payments based on projections of Company performance and amortization of the present value discount.

Short-term Investments

Short-term investments consist of highly liquid investments in municipal bonds that reset on a weekly basis and can be called at any point in time.

Marketable Securities

Marketable securities consist solely of an auction rate security. Assumptions associated with the auction rate security include 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.

Contingent Consideration for Acquisition Earn Outs

Some 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 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 and is determined using a discounted cash flow model applied to projected net sales, using probabilities of achieving projected net sales 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, 2018:

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	Fair value at
(in thousands)	Aug 31, 2018		Valuation Technique	Unobservable Input	Range
Revenue based payments	$	1,173	Discounted cash flow	Discount rate	4%
				Probability of payment	100%
				Projected fiscal year of payment	2019-2020
Supplier default holdback payment	$	2,800	Estimated probability	Estimated probability	95%
				Project fiscal year of payment	2019

At August 31, 2018, the estimated potential amount of undiscounted future contingent consideration that we expect to pay as a result of all completed acquisitions is approximately $4.2 million, which represents the remaining contractual minimum payments.

13. MARKETABLE SECURITIES

Marketable securities, which can be government agency bonds, auction rate investments or corporate commercial paper, are classified as “available-for-sale securities” are reported at fair value, with unrealized gains and losses excluded from operations and reported as accumulated other comprehensive income (loss), net of related tax effects, in stockholders' equity. Cost is determined using the specific identification method. We hold an investment in an auction rate security that is high credit quality and generally achieved with municipal bond insurance. 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 security in the near term. We have not participated in any recent auctions. As of August 31, 2018 and May 31, 2018, we had $1.4 million and $1.3 million, respectively, in investments in one auction rate security. The authorities are current in their interest payments on the security. The auction rate security will mature in 2029.

As of August 31, 2018 and May 31, 2018, marketable securities consisted of the following:

	August 31, 2018
(in thousands)	Amortized cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Available-for-sale securities:
Government agency obligations	$	1,350	$	—	$	—	$	1,350
	$	1,350	$	—	$	—	$	1,350

	May 31, 2018
(in thousands)	Amortized cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available-for-sale securities:
Government agency obligations	$	1,350	$	—	$	(33	)	$	1,317
	$	1,350	$	—	$	(33	)	$	1,317

14. COMMITMENTS AND CONTINGENCIES    

Legal Proceedings

The Company is involved in various legal proceedings, including commercial, intellectual property, product liability, and regulatory 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.

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

On January 11, 2012, C.R. Bard, Inc. (“Bard”) filed a suit in the United States District Court of Utah claiming certain of our implantable port products infringe on three U.S. patents held by Bard (the "Utah Action"). Bard’s Complaint sought unspecified damages and other relief. We filed petitions for reexamination in the US Patent and Trademark Office ("USPTO") seeking to invalidate all three patents asserted by Bard in the litigation. Our petitions were granted and 40 of Bard's 41 patent claims were rejected and, following further proceedings, the Patent Office issued a Final Rejection of all 40 claims subject to reexamination. Thereafter, Bard filed appeals to the USPTO Board of Appeals and Interferences for all three reexaminations. The Patent Office issued decisions in all three appeals. In one (issued on March 11, 2016 for US Patent No. 7,785,302), the rejections of six of the ten claims under reexamination were affirmed, but were reversed on four of the ten claims. In the second (issued on March 24, 2016 for U.S. Patent No. 7,959,615), the rejections of eight of the ten claims under reexamination were affirmed but the rejections of the other two of the ten claims were reversed. In the third (issued on March 29 for U.S. Patent No. 7,947.022) the rejections of all twenty claims under reexamination were affirmed. Thereafter, Bard filed Requests for Rehearing in all three reexamination appeals and the Company filed Requests for Rehearing in two of the reexamination appeals (the ‘302 and ‘615 patent reexaminations). The PTO denied all three Rehearing Requests - - on February 1, 2017 for the ‘302; on February 17, 2017 for the ‘022; and on February 21, 2017 for the ‘615, but modified its characterization of one prior art reference for the ‘302 and ‘022 decisions.  Bard filed a Notice of Appeal to the Federal Circuit Court of Appeals in all three reexams and the Company filed Cross-Appeals for the ‘302 and the ‘615 reexams. The parties have completed the process of filing the various appellate briefs.  MedComp also filed an Amicus Brief in support of the Company on November 22, 2017. An oral hearing in the case was held on September 5, 2018. The Utah Action has been stayed pending final resolution of the USPTO 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.

On March 10, 2015, C.R. Bard, Inc. ("Bard") and Bard Peripheral Vascular, Inc. (“BPV”) filed suit in the United States District Court for the District of Delaware claiming certain of our implantable port products infringe on three U.S. patents held by Bard (the “Delaware Action"). Bard's complaint seeks unspecified damages and other relief. The patents asserted in the Delaware Action are different than those asserted in the Utah Action. On June 1, 2015, the Company filed two motions in response to Bard’s Complaint - one sought transfer to the District of Utah where the Utah Action is currently pending, and the other sought dismissal of the entire complaint on grounds that none of the claims in the asserted patents is directed to patent eligible subject matter under Section 101 of the Patent Statute and in light of recent authority from the U. S. Supreme Court. On January 12, 2016, the Court issued a decision denying both motions. A Markman hearing was held on March 10, 2017 and the Court issued its Claim Construction Order on May 19, 2017. On May 19, 2017, Bard served its Final Infringement Contentions and on June 2, 2017, the Company served its Final Invalidity Contentions.

On October 20, 2017, the scheduling order for the case was amended to, among other things, set a trial date commencing July 23, 2018. The parties completed Expert Discovery in January 2018. The parties completed briefing on their respective case dispositive motions on April 27, 2018. On June 26, 2018, the Court denied all case dispositive motions, ruling that issues of material fact remained in dispute. On July 9, 2018, the Court continued the trial until March 2019. 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.

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

On May 30, 2017, we commenced an action in the United States District Court for the Northern District of New York entitled AngioDynamics, Inc. v. C.R. Bard, Inc. and Bard Access Systems, Inc. (“Bard”).  In this action, we allege that Bard has illegally tied the sales of its tip location systems to the sales of its PICCs.  We allege that this practice violates the federal antitrust laws and has had, and continues to have, an anti-competitive effect in the market for PICCs.  We seek both monetary damages and injunctive relief. Bard moved to dismiss on September 8, 2017. On August 6, 2018 the court denied Bard’s motion in its entirety.  Initial conference in the case is scheduled for October 2, 2018.

Governmental Investigations

In June 2014 we received a subpoena from the U.S. Department of Justice (the “DOJ”) requesting documents in relation to a criminal and civil 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.

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In April 2015 we received a subpoena from the DOJ requesting documents in relation to a criminal and civil investigation the DOJ is conducting regarding purported promotion of certain of AngioDynamics’ VenaCure EVLT products for un-cleared indications.  We are cooperating fully with this investigation.

As of May 31, 2017, the Company accrued $12.5 million for these matters and in August 2017 the Company agreed in principle with the government to resolve these matters for approximately $12.5 million plus interest. In July 2018, the Company executed the final settlements and paid approximately $12.7 million.

15. ACQUISITION, RESTRUCTURING, AND OTHER ITEMS, NET

Acquisition, Restructuring and Other Items

For the three months ended August 31, 2018 and 2017 acquisition, restructuring and other items, net consisted of:

	Three months ended
(in thousands)	Aug 31, 2018		Aug 31, 2017
Legal*	$	2,880	$	1,611
Mergers and acquisitions	1,318		153
Restructuring	130		1,216
Other	94		9
Total	$	4,422	$	2,989

*Legal expenses related to litigation that is outside of the normal course of business.

Restructuring

The Company evaluates its performance and looks for opportunities to improve the overall operations of the Company on an ongoing basis. As a result of this evaluation, certain restructuring initiatives are taken to enhance the Company’s overall operations.

Operational Consolidation

On February 1, 2017, the Company announced to employees an operational consolidation plan (the “plan”) to consolidate our manufacturing facilities in Manchester, GA and Denmead, UK into the Glens Falls and Queensbury, NY facilities. This plan will streamline and optimize the manufacturing functions into one centralized location increasing the utilization of the Glens Falls and Queensbury facilities, optimizing inventory and reducing cost of goods sold through savings in overhead expenses and direct labor. The restructuring activities associated with the plan were completed in the fourth quarter of fiscal year 2018 with immaterial costs to be incurred in fiscal year 2019.

The Company recorded restructuring charges related to the plan during the three months ended August 31, 2018 of $0.1 million. During the three months ended August 31, 2017, the Company recorded $1.2 million. Total restructuring charges recorded to date are $6.1 million. Termination benefits are only earned if an employee stays until their termination date; therefore, the expenses related to termination benefits are being recorded ratably over the service period.

The table below presents the restructuring reserve for the three months ended August 31, 2018:

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	Three Months Ended August 31, 2018
	Termination Benefits			Plant Consolidation			Regulatory Filings			Contract Cancellation Costs		Other Costs		Total
(in thousands)
Balance at May 31, 2018	$	838		$	21		$	12		$	200	$	—	$	1,071
Charges	—			110			20			—		—		130
Non-cash adjustments	—			—			—			—		—		—
Cash payments	(521		)	(114		)	(18		)	—		—		(653		)
Balance at August 31, 2018	$	317		$	17		$	14		$	200	$	—	$	548

The Company’s restructuring liability of $0.5 million is mainly comprised of accruals for termination benefits which are included in accrued expenses on the consolidated balance sheet.

16. ACCUMULATED OTHER COMPREHESIVE INCOME (LOSS)

Changes in each component of accumulated other comprehensive income (loss), net of tax, are as follows for the three months ended August 31, 2018:

	Three months ended August 31, 2018
(in thousands)	Foreign currency translation gain (loss)			Unrealized gain (loss) on marketable securities		Total
Balance at May 31, 2018	$	(1,035	)	$	83	$	(952	)
Other comprehensive income (loss) before reclassifications, net of tax	(125		)	33		(92		)
Amounts reclassified from accumulated other comprehensive income	—			—		—
Net other comprehensive income (loss)	$	(125	)	$	33	$	(92	)
Balance at August 31, 2018	$	(1,160	)	$	116	$	(1,044	)

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17. RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS

The following table provides a description of recent accounting pronouncements that may have a material effect on the Company's consolidated financial statements:

Recently Issued Accounting Pronouncements - Adopted
Standard	Description	Date Adopted	Effect on the Consolidated Financial Statements
ASU No. 2014-09, Revenue from Contracts with Customers (ASU 2014-09)	This ASU provides a single, comprehensive accounting model for revenues arising from contracts with customers that supersedes most of the existing revenue recognition guidance, including industry-specific guidance. Under this model, revenue is recognized at an amount that an entity expects to be entitled to upon transferring control of goods or services to a customer, as opposed to when risks and rewards transfer to a customer under existing revenue recognition guidance.	June 1, 2018	See Note 3, "Revenue from Contracts with Customers" for the required disclosures related to the impact of adopting this standard.                                                                  The adoption of this standard did not have a material impact on the Company’s consolidated balance sheets and statements of operations.
ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (ASU 2016-15)	This ASU identifies how certain cash receipts and cash payments are presented and classified in the Statement of Cash Flows under Topic 230.	June 1, 2018	This adoption did not have an impact on the Company's financial statements.

Recently Issued Accounting Pronouncements - Not Yet Applicable or Adopted
Standard	Description	Effective Date	Effect on the Consolidated Financial Statements
ASU 2016-02, Leases (Topic 842)	This ASU increases transparency and comparability among organizations by recognizing lease assets and liabilities on the balance sheet and disclosing key information about leasing arrangements. For leases with a term of twelve months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and liabilities.	June 1, 2019	The Company is currently in the process of evaluating the impact of this ASU on its consolidated financial statements.

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18. SUBSEQUENT EVENTS

On September 21, 2018, the Company acquired RadiaDyne, a privately held medical diagnostic and device company that designs and develops patient dose monitoring technology to improve cancer treatment outcomes for an aggregate purchase price of $50.0 million with $40.0 million of potential future contingent consideration related to technology and revenue milestones. This acquisition expands the Company’s growing Oncology business by adding RadiaDyne’s early-stage, proprietary OARtrac® real-time radiation dose monitoring platform and other market-leading oncology solutions, including the IsoLoc®/ImmobiLoc® and Alatus® balloon stabilizing technologies.

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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.

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.

EXECUTIVE OVERVIEW

Company and Market

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 longer-term use.

Our business operations cross a variety of markets. Our financial performance is impacted by changing market dynamics, which have included an emergence of value-based purchasing by healthcare providers, consolidation of healthcare providers, the increased role of the consumer in health care decision-making and an aging population, among others. In addition, our growth is impacted by changes within our sector, such as the merging of competitors to gain scale and influence; changes in the regulatory environment for medical device; and fluctuations in the global economy.

Our sales and profitability growth also 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. We recognize the importance of, and intend to continue to make investments in research and development activities and business development opportunities and feel confident that our existing capital structure and free cash flow generation will allow us to properly fund those activities. This was evident with the BioSentry and RadiaDyne acquisitions noted below.

On August 14, 2018, the Company acquired the BioSentry Tract Sealant System (BioSentry) technology from Surgical Specialties, LLC, a medical device company headquartered in Westwood, Massachusetts for a total purchase price of $40.0 million of which $37.0 million was paid on August 14, 2018 and $3.0 million was recorded as contingent consideration. This is part of the Company’s strategic focus on building a continuum of care within the oncology space. Refer to Note 2 for further disclosure on the acquisition.

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On September 21, 2018, the Company acquired RadiaDyne, a privately held medical diagnostic and device company that designs and develops patient dose monitoring technology to improve cancer treatment outcomes for an aggregate purchase price of $50.0 million with $40.0 million of future contingent consideration related to technology and revenue milestones. This acquisition expands the Company’s growing Oncology business by adding RadiaDyne’s early-stage, proprietary OARtrac® real-time radiation dose monitoring platform and other market-leading oncology solutions, including the IsoLoc®/ImmobiLoc® and Alatus® balloon stabilizing technologies.

We sell our products in the United States primarily through a direct sales force, and outside the U.S. through a combination of a direct sales and distributor relationships. We expect our businesses to grow in both sales and profitability through geographic expansion, market penetration, new product introductions and increasing our direct presence internationally.

In evaluating the operating performance of our business, management focuses on revenue, gross margin, operating income, earnings per share and cash flow from operations. A summary of these key financial metrics for the three months ended August 31, 2018 compared to the three and three months ended August 31, 2017 follows:

Three months ended August 31, 2018:

• Revenue decreased by 0.1% to $85.3 million

• Gross margin increased 380 bps to 52.1%

• Operating income increased by $0.2 million to $0.3 million

• Earnings per share decreased by $0.01 to $(0.01)

• Cash flow used in operations decreased by $11.9 million to $8.9 million

New Accounting Pronouncements

Information regarding new accounting pronouncements is included in Note 17 to our consolidated financial statements in this Quarterly Report on Form 10-Q.

Results of Operations for the Three Months ended August 31, 2018 and 2017

For the three months ended August 31, 2018, we reported net loss of $0.5 million, or $(0.01) per diluted share, on net sales of $85.3 million, compared with net loss of less than one hundred thousand dollars, or $0.00 per share, on net sales of $85.4 million during the same quarter of the prior year.

Net Sales

Net sales - Net sales are derived from the sale of our products and related freight charges, less discounts and returns.

Net sales for the three months ended August 31, 2018 and 2017:

	Three months ended
(in thousands)	Aug 31, 2018		Aug 31, 2017		% Growth
Net Sales by Global Business Unit
Vascular Interventions & Therapies	$	49,995	$	49,865	0.3%
Vascular Access	23,790		23,238		2.4%
Oncology	11,555		12,308		(6.1)%
Total	$	85,340	$	85,411	(0.1)%
Net Sales by Geography
United States	$	67,684	$	68,931	(1.8)%
International	17,656		16,480		7.1%
Total	$	85,340	$	85,411	(0.1)%

For the three months ended August 31, 2018, net sales decreased$0.1 million to $85.3 million compared to the same period in the prior year.

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• U.S. net sales decreased 1.8% from the prior year as growth in Fluid Management, Angiographic catheters and AngioVac was offset by reimbursement challenges in Venous, continued declines in our PICCs business and a decrease in our thermal ablation products. The Company's Microwave product line declined year over year due to the negative impact from the timing of the Company's prior year replacement shipments of $1.6 million which took place in the first quarter as a result of the market withdrawal of Acculis.

• International sales increased from the prior year 7.1% as a result of growth in NanoKnife in China as well as growth in PICCs and dialysis businesses.

Vascular Interventions & Therapies

• Total Vascular Interventions & Therapies sales increased$0.1 million primarily attributable to strong performance in Fluid Management, Angiographic catheters and AngioVac. The increase in Fluid Management was attributed to continued efforts around new custom kits. The Company continues to see strong results in the Angiographic catheters business and has maintained the majority of the business from a competitor's recall. The Company continues to see strong case volumes in AngioVac. AngioVac case volume increased 16% percent from the prior year due to increased adoption of the Company's unique technology. These increases were partially offset by decreased sales volume of Venous products due to reimbursement challenges.

• U.S. Vascular Interventions & Therapies sales increased $0.2 million due to an increase in volume in Fluid Management, Angiographic catheters and AngioVac. This was partially offset by decreased sales volume of Venous products. International Vascular Interventions & Therapies sales remained consistent year over year.

Vascular Access

• Total Vascular Access sales increased$0.6 million due to growth primarily in our BioFlo businesses. Our BioFlo product lines, other than BioFlo PICCs, increased $0.5 million year over year. This was offset by decreased sales of BioFlo PICCs of $0.1 million. The Company's BioFlo portfolio now comprises 50% of overall Vascular Access sales, compared to 49% a year ago.

• U.S. Vascular Access sales declined by $0.1 million due to competitive pressures in the PICC product line which was partially offset by growth in Midlines and BioFlo Dialysis products which continue to gain traction in the marketplace.

• International Vascular Access sales increased by $0.7 million as the Company continues to expand its global reach of its Vascular Access product offerings.

Oncology

• Total Oncology sales decreased$0.8 million year over year primarily due to decreased sales in Radiofrequency Ablation and Microwave disposables. Microwave sales were negatively impacted by the timing of the Company's prior year replacement shipments of $1.6 million which took place in the first quarter of the prior year as a result of the market withdrawal of Acculis. This was partially offset by $0.4 million in BioSentry sales as a result of the acquisition during the quarter and growth of NanoKnife disposables.

• U.S. Oncology sales decreased by $1.1 million, driven by decreased sales in Microwave disposables as discussed above and NanoKnife capital sales. This was partially offset by BioSentry sales of $0.3 million.

• International Oncology sales increased by $0.3 million year over year as a result of increased NanoKnife disposable sales in China.

Gross Profit, Operating expenses, and Other income (expense)

	Three months ended
(in thousands)	Aug 31, 2018			Aug 31, 2017			% Change
Gross profit	$	44,467		$	41,229		8	%
Gross profit % of sales	52.1		%	48.3		%
Research and development	$	7,662		$	6,441		19	%
% of sales	9.0		%	7.5		%
Selling and marketing	$	19,433		$	19,402		—	%
% of sales	22.8		%	22.7		%
General and administrative	$	8,496		$	8,056		5	%
% of sales	10.0		%	9.4		%

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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, exclusive of intangible amortization.

Gross profit increased by $3.2 million compared to the prior year. The increase is primarily attributable to the following:

• The expiration of a royalty agreement in fiscal year 2018 resulted in $1.3 million of favorability compared to the prior year.

• $1.0 million of favorability as a result of the plant consolidation.

• Net productivity was driven by continued operational and supply chain efforts which contributed $0.9 million of favorability year over year. This was partially offset by timing of capitalized variances of $0.7 million.

• Sales volume/mix contributed $1.2 million of favorability year over year offset by increased freight expense of $0.3 million and pricing headwinds of $0.2 million.

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, and manage clinical, regulatory and medical affairs.

R&D expense increased$1.2 million compared to the prior year. The increase is primarily attributable to the following:

• $0.9 million increase in new product development and clinical efforts related to the Company’s investment areas of NanoKnife, Thrombus Management and BioFlo.

• $0.4 million increase in backfilling of open positions from prior year.

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 expense was flat year over year.

General and administrative expenses - General and administrative (“G&A”) expenses include executive management, finance, information technology, human resources, business development, legal, and the administrative and professional costs associated with those activities.

G&A expense increased$0.4 million compared to the prior year. The increase is primarily attributable to the following:

• Compensation and benefits increase of approximately $0.8 million primarily as a result of backfilling of prior year openings and stock based compensation.

• These increases were partially offset by a decrease in legal and professional fees of $0.3 million.

	Three months ended
(in thousands)	Aug 31, 2018			Aug 31, 2017			$ Change
Amortization of intangibles	$	4,116		$	4,096		$	20
Change in fair value of contingent consideration	$	12		$	105		$	(93	)
Acquisition, restructuring and other items, net	$	4,422		$	2,989		$	1,433
Other expense	$	(803	)	$	(156	)	$	(647	)

Amortization of intangibles - Represents the amount of amortization expense that was taken on intangibles assets held by the Company.

• Amortization expense remained consistent.

Change in fair value of contingent consideration - Represents changes in contingent consideration driven by changes to estimated future payments on earn-out liabilities created through acquisitions and amortization of present value discounts on long-term contingent consideration.

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• In the second quarter of fiscal year 2018, the final minimum payment was made on the AngioVac product contingent consideration and a $2.1 million payment was made on the Microsulis contingent consideration during the first quarter of fiscal 2019. Only one remaining minimum payment is remaining on the Microsulis contingent consideration. The normal amortization of the present value discount on the contingent liabilities is now less than $0.1 million per quarter.

Acquisition, restructuring and other items, net - Represents costs associated with mergers and acquisitions, restructuring expenses, legal costs that are related to litigation that is not in the ordinary course of business, legal settlements and other one-time items.

Acquisition, restructuring and other items, net increased by $1.4 million compared to the prior year. The increase is primarily attributable to the following:

• M&A expenses of $1.3 million were incurred in the first quarter of fiscal year 2019 compared to $0.2 million in the prior year.

• Legal expenses, related to litigation that is outside of the normal course of business, of $2.8 million were recorded in the first quarter of fiscal year 2019 compared to $1.6 million in the prior year.

• In the first quarter of fiscal year 2018, the Company incurred $1.2 million of expense which consisted of $0.6 million of severance and $0.6 million of costs to move the product lines related to the plant consolidation that was announced in the third quarter of fiscal year 2017. The plant consolidation was completed in the fourth quarter of fiscal year 2018; therefore, only $0.1 million of expense was incurred in the first quarter of fiscal year 2019.

Other expenses- Other expenses include interest expense, foreign currency impacts, bank fees, and amortization of deferred financing costs.

• The increase in other expenses from the prior year is primarily due to increased interest expense of $0.2 million and fluctuations in foreign currency.

Income Tax Provision (Benefit)

	Three months ended
(in thousands)	Aug 31, 2018			Aug 31, 2017
Income tax expense (benefit)	$	(8	)	$	19
Effective tax rate including discrete items	1.7		%	118.8		%

Our effective tax rate including discrete items for the three month periods ended August 31, 2018 and 2017 was negative 1.7% and 118.8%, respectively. In fiscal 2019, the Company's effective tax rate differs from the U.S. statutory rate primarily due to the impact of the valuation allowance, foreign taxes and state taxes.

The estimated annual effective tax rate, however, prior to discrete items was 2.3% in the first quarter of fiscal 2019, as compared to 52.9% for the same period in fiscal 2018.

The Company regularly assesses its ability to realize its deferred tax assets. Assessing the realization of deferred tax assets requires significant management judgment. In determining whether its deferred tax assets are more likely than not realizable, the Company evaluated all available positive and negative evidence, and weighted the evidence based on its objectivity. Evidence the Company considered included its history of net operating losses, which resulted in the Company recording a full valuation allowance for its deferred tax assets in fiscal 2016 and each year thereafter.

Based on the review of all available evidence, the Company determined that it has not yet attained a sustained level of profitability and the objectively verifiable negative evidence outweighed the positive evidence and therefore the Company has provided a valuation allowance on its federal and state net operating loss carryforwards, federal and state R&D credit carryforwards and other net deferred tax assets that have a limited life and are not supportable by the naked credit deferred tax liability sourced income as of August 31, 2018. The Company will continue to assess the level of the valuation allowance required. If sufficient positive evidence exists in future periods to support a release of some or all of the valuation allowance, such a release would likely have a material impact on the Company’s results of operations.

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Liquidity and Capital Resources

Our cash and cash equivalents totaled $24.8 million as of August 31, 2018, compared with $74.1 million as of May 31, 2018. Marketable securities totaled $1.4 million as of August 31, 2018 and $1.3 million as of May 31, 2018, and consist of an auction rate security. As of August 31, 2018, total principal debt outstanding was $91.3 million and the fair value of contingent consideration payments was $4.0 million.

The table below summarizes our cash flows for the three months ended August 31, 2018 and 2017:

	Three Months Ended
(in thousands)	Aug 31, 2018			Aug 31, 2017
Cash provided by (used in):
Operating activities	$	(8,873	)	$	3,036
Investing activities	(37,682		)	(501		)
Financing activities	(2,645		)	(2,538		)
Effect of exchange rate changes on cash and cash equivalents	(134		)	659
Net change in cash and cash equivalents	$	(49,334	)	$	656

During the three months ended August 31, 2018 and 2017, cash flows consisted of the following:

Cash provided by (used in) operating activities

Quarter ended August 31, 2018:

• Net loss was driven by higher operating expenses in research and development, selling and marketing and general administrative as well as costs related to our acquisition and restructuring activities. Partially offsetting the higher operating expenses was an increase in gross profit.

• The Company continues to focus on optimizing its cash conversion cycle. In the first quarter of fiscal year 2019 working capital was negatively impacted by increased inventory on hand of $0.8 million. Additionally, days sales outstanding ("DSO") increased by two days for a $0.6 million impact. Also, the $12.5 million DOJ settlement payment that was made during the first quarter of fiscal year 2019 negatively impacted working capital from accounts payable and accrued liabilities.

Quarter ended August 31, 2017:

• Net loss was driven by lower sales and lower gross margins.

• With regards to working capital, the Company focused on optimizing DSO which contributed to $3.1 million of working capital improvement. This working capital improvement was offset by a $7.2 million decrease in accounts payable and accrued liabilities along with a decrease in Acculis inventory reserves of $0.5 million and inventory build related to the plant consolidation.

Cash used in investing activities

Quarter ended August 31, 2018 and 2017:

• $0.7 million in fixed asset additions, primarily for maintenance of equipment versus $0.5 million in the prior year.

• A $37.0 million cash payment to acquire the BioSentry product from SSC described in Note 2 to the financial statements.

Cash used in financing activities

Quarter ended August 31, 2018 and 2017:

• $1.3 million in repayments on long-term debt in both the current year and prior year. This is consistent with the required amortization payment on the Term Loan.

• $0.7 million of proceeds from stock option and ESPP activity versus $0.8 million in the prior year.

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• $2.1 million payment on earn-out liabilities in both the current year and prior year.

On November 7, 2016, the Company entered into a Credit Agreement that provides for a $100.0 million senior secured term loan facility and a $150.0 million senior secured revolving credit facility, which includes up to a $20.0 million sublimit for letters of credit and a $5.0 million sublimit for swingline loans.

We believe that our current cash and investment balances, together with future cash generated from operations and our revolving credit facility capacity of up to $150.0 million as of August 31, 2018, will provide sufficient liquidity to meet our anticipated needs for capital for at least the next 12 months. As part of the RadiaDyne acquisition that closed on September 21, 2018, the Company drew $55.0 million on the revolving credit facility. Based on our current leverage ratio, the Company could draw approximately $70.0 million more on the remaining $95.0 million of the revolving credit facility. If we seek to make significant acquisitions of other businesses or technologies in the future, we may require additional external financing.

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Item 3. Quantitative and Qualitative Disclosures About Market Risk.

Foreign Currency Exchange Rate Risk

We are exposed to market risk from changes in currency exchange rates, as well as interest rate fluctuations on our credit facility and investments that could impact our results of operations and financial position.

We transact sales in currencies other than the U.S. Dollar, particularly the Euro, British pound and Canadian dollar. Approximately 8% of our sales in the first quarter of fiscal 2019 were denominated in foreign currencies. We do not have expenses denominated in foreign currencies at the level of our sales and as a result, our profitability is exposed to currency fluctuations. When the U.S. Dollar strengthens, our sales and gross profit will be negatively impacted. In addition, we have assets and liabilities denominated in non-functional currencies which are remeasured at each reporting period, with the offset to changes presented as a component of Other (Expenses) Income. Significant non-functional balances include accounts receivable due from a sub-section of our international customers.

Interest Rate Risk

On November 7, 2016, we entered into the Credit Agreement which provides for a $100 million senior secured Term Loan and a $150 million Revolving Facility. Interest on both the Term Loan and Revolving Facility is 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 1.50% to 2.25% respectively. In the event of default, the interest rate may be increased by 2.0%. A 50 basis point (0.50%) increase or decrease in the interest rate would result approximately in a $2.0 million increase or decrease in interest expense over the life of the agreement.

Concentration of Credit Risk

Financial instruments, which potentially subject the Company to significant concentrations of credit risk, consist primarily of cash and cash equivalents, our credit facility and trade accounts receivable.

The Company maintains cash and cash equivalents at various institutions and performs periodic evaluations of the relative credit standings of these financial institutions to ensure their credit worthiness. In addition, the Credit Agreement is structured across five above investment grade banks. The Company has the ability to draw equally amongst the five banks which limits the concentration of credit risk of one institution.

Concentration of credit risk with respect to trade accounts receivable is limited due to the large number of customers that purchase products from the Company. No single customer represents more than 10% of total sales. The Company monitors the creditworthiness of its customers to which it grants credit terms in the normal course of business. Although the Company does not currently foresee a significant credit risk associated with the outstanding accounts receivable, repayment is dependent upon the financial stability of our customers.

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Item 4. Controls and Procedures.

Evaluation of disclosure controls and procedures

As of the end of the period covered by this report, our management, under the supervision and with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of the design and operation of our disclosure controls and procedures pursuant to Rule 13a-15(b) of the Securities Exchange Act of 1934, as amended. Based on that evaluation, the Chief Executive Officer and the Chief Financial Officer concluded that our disclosure controls and procedures as of the end of the period covered by this report were effective to provide reasonable assurance that the information required to be disclosed by us in reports filed under the Securities Exchange Act of 1934, as amended, is recorded, processed, summarized and reported within the time periods specified in the SEC rules and forms and is accumulated and communicated to management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Control over Financial Reporting

There was no change in our internal control over financial reporting for the fiscal quarter ended August 31, 2018 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.

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

On January 11, 2012, C.R. Bard, Inc. (“Bard”) filed a suit in the United States District Court of Utah claiming certain of our implantable port products infringe on three U.S. patents held by Bard (the "Utah Action"). Bard’s Complaint sought unspecified damages and other relief. We filed petitions for reexamination in the US Patent and Trademark Office ("USPTO") seeking to invalidate all three patents asserted by Bard in the litigation. Our petitions were granted and 40 of Bard's 41 patent claims were rejected and, following further proceedings, the Patent Office issued a Final Rejection of all 40 claims subject to reexamination. Thereafter, Bard filed appeals to the USPTO Board of Appeals and Interferences for all three reexaminations. The Patent Office issued decisions in all three appeals. In one (issued on March 11, 2016 for US Patent No. 7,785,302), the rejections of six of the ten claims under reexamination were affirmed, but were reversed on four of the ten claims. In the second (issued on March 24, 2016 for U.S. Patent No. 7,959,615), the rejections of eight of the ten claims under reexamination were affirmed but the rejections of the other two of the ten claims were reversed. In the third (issued on March 29 for U.S. Patent No. 7,947.022) the rejections of all twenty claims under reexamination were affirmed. Thereafter, Bard filed Requests for Rehearing in all three reexamination appeals and the Company filed Requests for Rehearing in two of the reexamination appeals (the ‘302 and ‘615 patent reexaminations). The PTO denied all three Rehearing Requests - - on February 1, 2017 for the ‘302; on February 17, 2017 for the ‘022; and on February 21, 2017 for the ‘615, but modified its characterization of one prior art reference for the ‘302 and ‘022 decisions.  Bard filed a Notice of Appeal to the Federal Circuit Court of Appeals in all three reexams and the Company filed Cross-Appeals for the ‘302 and the ‘615 reexams. The parties have completed the process of filing the various appellate briefs.  MedComp also filed an Amicus Brief in support of the Company on November 22, 2017. An oral hearing in the case was held on September 5, 2018. The Utah Action has been stayed pending final resolution of the USPTO 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.

On March 10, 2015, C.R. Bard, Inc. ("Bard") and Bard Peripheral Vascular, Inc. (“BPV”) filed suit in the United States District Court for the District of Delaware claiming certain of our implantable port products infringe on three U.S. patents held by Bard (the “Delaware Action"). Bard's complaint seeks unspecified damages and other relief. The patents asserted in the Delaware Action are different than those asserted in the Utah Action. On June 1, 2015, the Company filed two motions in response to Bard’s Complaint - one sought transfer to the District of Utah where the Utah Action is currently pending, and the other sought dismissal of the entire complaint on grounds that none of the claims in the asserted patents is directed to patent eligible subject matter under Section 101 of the Patent Statute and in light of recent authority from the U. S. Supreme Court. On January 12, 2016, the Court issued a decision denying both motions. A Markman hearing was held on March 10, 2017 and the Court issued its Claim Construction Order on May 19, 2017. On May 19, 2017, Bard served its Final Infringement Contentions and on June 2, 2017, the Company served its Final Invalidity Contentions.

On October 20, 2017, the scheduling order for the case was amended to, among other things, set a trial date commencing July 23, 2018. The parties completed Expert Discovery in January 2018. The parties completed briefing on their respective case dispositive motions on April 27, 2018. On June 26, 2018, the Court denied all case dispositive motions, ruling that issues of material fact remained in dispute. On July 9, 2018, the Court continued the trial until March 2019. 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.

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

On May 30, 2017, we commenced an action in the United States District Court for the Northern District of New York entitled AngioDynamics, Inc. v. C.R. Bard, Inc. and Bard Access Systems, Inc. (“Bard”).  In this action, we allege that Bard has illegally tied the sales of its tip location systems to the sales of its PICCs.  We allege that this practice violates the federal antitrust laws and has had, and continues to have, an anti-competitive effect in the market for PICCs.  We seek both monetary damages and injunctive relief. Bard moved to dismiss on September 8, 2017. On August 6, 2018 the court denied Bard’s motion in its entirety.  Initial conference in the case is scheduled for October 2, 2018.

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Governmental Investigations

In June 2014 we received a subpoena from the U.S. Department of Justice (the “DOJ”) requesting documents in relation to a criminal and civil 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.

In April 2015 we received a subpoena from the DOJ requesting documents in relation to a criminal and civil investigation the DOJ is conducting regarding purported promotion of certain of AngioDynamics’ VenaCure EVLT products for un-cleared indications.  We are cooperating fully with this investigation.

As of May 31, 2017, the Company accrued $12.5 million for these matters and in August 2017 the Company agreed in principle with the government to resolve these matters for approximately $12.5 million plus interest. In July 2018, the Company executed the final settlements and paid approximately $12.7 million.

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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, 2018 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.

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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, 2018:

	Issuer Purchases of Equity Securities
	Total Number of Shares Purchased (1)	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Programs (2)	Maximum Approximate Dollar Value of Shares that May Yet Be Purchased Under Plans or Programs
June 1, 2018 - June 30, 2018	—	$	—	—	$	—
July 1, 2018 - July 31, 2018	20,342	$	21.56	—	$	—
August 1, 2018 - August 31, 2018	826	$	21.90	—	$	—
Total	21,168	$	21.57	—	—

(1) Reflects shares withheld to satisfy minimum statutory tax withholding amounts due from employees related to the vesting of restricted shares from equity-based awards.

(2) The Company has $11.4 million available to repurchase under the Repurchase Program that was approved by the Board of Directors for the twenty-four month period ending November 6, 2018.

Item 3. Defaults on Senior Securities.

None.

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

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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 1, 2018	/ S /    JAMES C. CLEMMER
		James C. Clemmer, President, Chief Executive Officer (Principal Executive Officer)
Date:	October 1, 2018	/ S /    MICHAEL C. GREINER
		Michael C. Greiner, Executive Vice President, Chief Financial Officer (Principal Financial and Accounting Officer)

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EX-31.1

Exhibit 31.1

CERTIFICATION

I, James C. Clemmer, 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 1, 2018

/ S / JAMES C. CLEMMER

James C. Clemmer, President,

Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Michael C. Greiner, 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 1, 2018

/ S / MICHAEL C. GREINER

Michael C. Greiner 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, James C. Clemmer, 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, 2018 (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 1, 2018

/ s / James C. Clemmer

James C. Clemmer, 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, Michael C. Greiner, 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, 2018 (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 1, 2018

/ s / Michael C. Greiner

Michael C. Greiner, Executive Vice President and

Chief Financial Officer

XML

Document and Entity Information - shares	3 Months Ended
	Aug. 31, 2018	Sep. 28, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Aug. 31, 2018
Document Fiscal Year Focus	2019
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		37,121,628

XML

Consolidated Statements of Income (Loss) (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Aug. 31, 2018	Aug. 31, 2017
Income Statement [Abstract]
Net sales	$ 85,340	$ 85,411
Cost of sales (exclusive of intangible amortization)	40,873	44,182
Gross profit	44,467	41,229
Operating expenses:
Research and development	7,662	6,441
Sales and marketing	19,433	19,402
General and administrative	8,496	8,056
Amortization of intangibles	4,116	4,096
Change in fair value of contingent consideration	12	105
Acquisition, restructuring and other items, net	4,422	2,989
Total operating expenses	44,141	41,089
Operating income (loss)	326	140
Other (expenses) income:
Interest expense, net	(917)	(723)
Other income, net	114	567
Total other expenses, net	(803)	(156)
Loss before income tax expense	(477)	(16)
Income tax expense (benefit)	(8)	19
Net loss	$ (469)	$ (35)
Earnings per share
Basic (in usd per share)	$ (0.01)	$ 0.00
Diluted (in usd per share)	$ (0.01)	$ 0.00
Basic weighted average shares outstanding (in shares)	37,323	36,919
Diluted weighted average shares outstanding (in shares)	37,323	36,919

XML

Consolidated Statements of Comprehensive Income (Loss) (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2018	Aug. 31, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (469)	$ (35)
Other comprehensive income (loss), before tax:
Unrealized gain on marketable securities	33	0
Foreign currency translation	(125)	283
Other comprehensive income (loss), before tax	(92)	283
Income tax expense related to items of other comprehensive income	0	0
Other comprehensive income (loss), net of tax	(92)	283
Total comprehensive income (loss), net of tax	$ (561)	$ 248

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Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Aug. 31, 2018	May 31, 2018
Current assets
Cash and cash equivalents	$ 24,762	$ 74,096
Marketable securities	1,350	1,317
Accounts receivable, net of allowances of $2,222 and $2,466, respectively	40,164	39,401
Inventories	49,721	48,916
Prepaid expenses and other	4,888	4,302
Total current assets	120,885	168,032
Property, plant and equipment, net	42,163	42,461
Other assets	3,637	3,417
Intangible assets, net	144,194	130,310
Goodwill	382,992	361,252
Total assets	693,871	705,472
Current liabilities
Accounts payable	16,916	15,775
Accrued liabilities	19,900	34,426
Current portion of long-term debt	5,000	5,000
Current portion of contingent consideration	3,973	2,100
Total current liabilities	45,789	57,301
Long-term debt, net of current portion	85,444	86,621
Deferred income taxes	17,154	17,173
Contingent consideration, net of current portion	0	1,161
Other long-term liabilities	595	621
Total liabilities	148,982	162,877
Commitments and contingencies (Note 14)
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, 75,000,000 shares authorized; 37,861,057 and 37,594,493 shares issued and 37,491,057 and 37,224,493 shares outstanding at August 31, 2018 and May 31, 2018, respectively	372	370
Additional paid-in capital	546,615	543,762
Retained earnings	4,660	5,129
Treasury stock, 370,000 shares at August 31, 2018 and May 31, 2018, respectively	(5,714)	(5,714)
Accumulated other comprehensive loss	(1,044)	(952)
Total Stockholders’ Equity	544,889	542,595
Total Liabilities and Stockholders' Equity	$ 693,871	$ 705,472

XML

Consolidated Balance Sheets (unaudited) (Parenthetical) - USD ($) $ in Thousands	Aug. 31, 2018	May 31, 2018
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 2,222	$ 2,466
Preferred stock, par value (in usd per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	37,861,057	37,594,493
Common stock, shares outstanding (in shares)	37,491,057	37,224,493
Treasury stock, shares (in shares)	370,000	370,000

XML

Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2018	Aug. 31, 2017
Cash flows from operating activities:
Net loss	$ (469)	$ (35)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,599	5,793
Stock based compensation	2,150	1,797
Change in fair value of contingent consideration	12	105
Gain on contingent consideration for IPR&D Write-off	(10)	(82)
Change in accounts receivable allowances	(228)	278
Write-off of other assets	25	(567)
Changes in operating assets and liabilities:
Accounts receivable	(562)	3,103
Inventories	(761)	(781)
Prepaid expenses and other	(1,200)	620
Accounts payable, accrued and other liabilities	(13,429)	(7,195)
Net cash provided by (used in) operating activities	(8,873)	3,036
Cash flows from investing activities:
Additions to property, plant and equipment	(682)	(501)
Cash paid for acquisition	(37,000)	0
Net cash used in investing activities	(37,682)	(501)
Cash flows from financing activities:
Repayment of long-term debt	(1,250)	(1,250)
Payment of acquisition related contingent consideration	(2,100)	(2,100)
Proceeds from exercise of stock options and employee stock purchase plan	705	812
Net cash used in financing activities	(2,645)	(2,538)
Effect of exchange rate changes on cash and cash equivalents	(134)	659
Increase (decrease) in cash and cash equivalents	(49,334)	656
Cash and cash equivalents at beginning of period	74,096	47,544
Cash and cash equivalents at end of period	24,762	48,200
Supplemental disclosure of non-cash investing and financing activities:
Contractual obligations for acquisition of fixed assets	$ 38	$ 38

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Consolidated Statement of Stockholders' Equity (unaudited) - 3 months ended Aug. 31, 2018 - USD ($) $ in Thousands	Total	Restricted stock units	Performance share units	Common Stock	Common Stock Restricted stock units	Common Stock Performance share units	Additional paid in capital	Additional paid in capital Restricted stock units	Retained earnings	Accumulated other comprehensive loss	Treasury Stock
Beginning Balance at May. 31, 2018	$ 542,595			$ 370			$ 543,762		$ 5,129	$ (952)	$ (5,714)
Beginning Balance, Shares at May. 31, 2018				37,594,493
Beginning Balance,Treasury Shares at May. 31, 2018	(370,000)										(370,000)
Net loss	$ (469)								(469)
Exercise of stock options	608			$ 1			607
Exercise of stock options, Shares				71,336
Issuance/Cancellation of restricted stock units		$ (460)	$ 0					$ (460)
Issuance/Cancellation of performance share units and restricted stock units, net, Shares					149,446	5,235
Purchases of common stock under ESPP	557			$ 1			556
Purchase of common stock under ESPP, Shares				40,547
Stock-based compensation	2,150						2,150
Other comprehensive loss, net of tax	(92)									(92)
Ending Balance at Aug. 31, 2018	$ 544,889			$ 372			$ 546,615		$ 4,660	$ (1,044)	$ (5,714)
Ending Balance, Shares at Aug. 31, 2018				37,861,057
Ending Balance,Treasury Shares at Aug. 31, 2018	(370,000)										(370,000)

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Consolidated Financial Statements

3 Months Ended

Aug. 31, 2018

Accounting Policies [Abstract]

Consolidated Financial Statements

CONSOLIDATED FINANCIAL STATEMENTS

The consolidated balance sheet as of August 31, 2018, the consolidated statement of stockholders’ equity for the three months ended August 31, 2018 and the consolidated statements of income, consolidated statements of comprehensive income (loss) for the three months ended August 31, 2018 and 2017, and consolidated statements of cash flows for the three months ended August 31, 2018 and 2017 have been prepared by us and are unaudited. The consolidated balance sheet as of May 31, 2018 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 (consisting of 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, 2018 (and for all periods presented) have been made.

The unaudited interim consolidated financial statements for the three months ended August 31, 2018 and 2017 include the accounts of AngioDynamics, Inc. and its wholly owned subsidiaries, collectively, the “Company”. All intercompany balances and transactions have been eliminated.

Recent Events

On August 14, 2018, the Company acquired the BioSentry Tract Sealant System (BioSentry) technology from Surgical Specialties, LLC, a medical device company headquartered in Westwood, Massachusetts for a total purchase price of $40.0 million of which $37.0 million was paid on August 14, 2018 and $3.0 million was recorded as contingent consideration. This is part of the Company’s strategic focus on building a continuum of care within the oncology space. Refer to Note 2 for further disclosure on the acquisition.

On September 21, 2018, the Company acquired RadiaDyne, a privately held medical diagnostic and device company that designs and develops patient dose monitoring technology to improve cancer treatment outcomes for an aggregate purchase price of $50.0 million with $40.0 million of future contingent consideration related to technology and revenue milestones. This acquisition expands the Company’s growing Oncology business by adding RadiaDyne’s early-stage, proprietary OARtrac® real-time radiation dose monitoring platform and other market-leading oncology solutions, including the IsoLoc®/ImmobiLoc® and Alatus® balloon stabilizing technologies.

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Acquisitions

3 Months Ended

Aug. 31, 2018

Business Combinations [Abstract]

Acquisitions

ACQUISITIONS

On August 14, 2018, the Company acquired the BioSentry product from Surgical Specialties, LLC (“SSC”), for an aggregate purchase price of $40.0 million of which $37.0 million was paid on August 14, 2018 and $3.0 million was recorded as contingent consideration. The contingent consideration liability was recorded at fair value of $2.8 million and will be payable to SSC upon fulfillment of hydrogel orders.

The Company accounted for the BioSentry acquisition under the acquisition method of accounting for business combinations. Accordingly, the cost to acquire the assets was allocated to the underlying net assets in proportion to estimates of their respective fair values. The excess of the purchase price over the estimated fair value of the net assets acquired was recorded as goodwill. Goodwill is non-deductible for income tax purposes.

The Company has not disclosed the amount of revenue and earnings for sales of BioSentry products since acquisition, nor proforma information, because these amounts are not significant to the Company's financial statements. Acquisition-related costs associated with the BioSentry acquisition, which are included in acquisition, restructuring and other expenses, net in the accompanying consolidated statements of income, were approximately $1.0 million. The following table summarizes the preliminary aggregate purchase price allocated to the net assets acquired:

	Aug 14, 2018
(in thousands)
Inventory	$	50
Property, plant and equipment	10
Intangible assets:
BioSentry trademark	1,700
BioSentry product technology	13,800
Customer relationships	2,500
Goodwill	21,740
Net assets acquired	$	39,800

The allocation of the purchase price to the assets acquired and liabilities assumed, including the amount allocated to goodwill, is subject to change within the measurement period (up to one year from the acquisition date) as additional information that existed at the date of the acquisition related to the values of assets acquired and liabilities assumed is obtained.

The values assigned to the BioSentry trademark and product technologies were derived using the relief-from-royalties method under the income approach. This approach is used to estimate the cost savings that accrue for the owner of an intangible asset who would otherwise have to pay royalties or licensing fees on revenues earned through the use of the asset if they had not owned the rights to use the assets. The net after-tax royalty savings are calculated for each year in the remaining economic life of the intangible asset and discounted to present value. The trademark and product technologies are deemed to have a 15-year useful life and are amortized on a straight-line basis over their useful life.

The value assigned to customer relationships was derived using the multi-period excess earnings method under the income approach. This approach estimates the excess earnings generated over the lives of the customers that existed as of the acquisition date and discounts such earnings to present value. Customer relationships are amortized on a straight-line basis over ten years.

The goodwill arising from the acquisition consists largely of synergies and economies of scale the Company hopes to achieve from combining the acquired assets with the Company's current operations.

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Revenue from Contracts with Customers

3 Months Ended

Aug. 31, 2018

Revenue from Contract with Customer [Abstract]

Revenue from Contracts with Customers

REVENUE FROM CONTRACTS WITH CUSTOMERS

Adoption of ASC Topic 606 "Revenue from Contracts with Customers"

The Company adopted ASC 606, Revenue from Contracts with Customers on June 1, 2018 using the modified retrospective method for all contracts not completed as of the date of adoption. The reported results for fiscal 2019 reflect the application of ASC 606 guidance while the reported results for fiscal 2018 were prepared under the guidance of ASC 605, Revenue Recognition (“ASC 605”). For discussion of the Company’s accounting policy for revenue recognition under ASC 605, refer to Item 8 of the Annual Report on Form 10-K for the year ended May 31, 2018. The adoption of ASC 606 did not have an impact on the Company’s consolidated balance sheet, results of operations, equity or cash flows as of the adoption date or for the periods presented, other than the enhanced disclosures included in this footnote.

Revenue Recognition

Under ASC 606, revenue is recognized when a customer obtains control of promised goods or services, in an amount that reflects the consideration which the entity expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that an entity determines are within the scope of ASC 606, the Company performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation.

The Company has one primary revenue stream which is the sales of its products.

Disaggregation of Revenue

The following tables summarize net product revenue by Global Business Unit ("GBU") and geography for the three months ended August 31, 2018:

(in thousands)	United States		International		Total
Net sales
Vascular Interventions & Therapies	$	42,039	$	7,956	$	49,995
Vascular Access	20,447		3,343		23,790
Oncology	5,198		6,357		11,555
Total	$	67,684	$	17,656	$	85,340

Net Product Revenue

The Company's products consist of 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 longer-term use. The Company sells its products to its distribution partners and to end users, such as interventional radiologists, interventional cardiologists, vascular surgeons, urologists, interventional and surgical oncologists and critical care nurses.

Contracts and Performance Obligations

The Company contracts with its customers based on customer purchase orders, which in many cases are governed by master purchasing agreements, to be contracts with customers. The Company’s contracts with customers are generally for product only, and do not include other performance obligations such as services or other material rights. As part of its assessment of each contract, the Company evaluates certain factors including the customer’s ability to pay (or credit risk). For each contract, the Company considers the promise to transfer products, each of which is distinct, to be the identified performance obligations.

Transaction Price and Allocation to Performance Obligations

Transaction prices of products are typically based on contracted rates. Product revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring products to a customer. To the extent the transaction price includes variable consideration, the Company estimates the amount of variable consideration that should be included in the transaction price utilizing the expected value method. As such, revenue is recorded net of rebates, returns and other deductions.

If a contract contains a single performance obligation, the entire transaction price is allocated to the single performance obligation. Contracts that contain multiple performance obligations require an allocation of the transaction price based on the estimated relative standalone selling prices of the promised products underlying each performance obligation. The Company has standard pricing for its products and determines standalone selling prices based on the price at which the performance obligation is sold separately.

Revenue Recognition

Revenue is recognized when control of the product is transferred to the customer (i.e., when the Company’s performance obligation is satisfied), which occurs at a point in time, and may be upon shipment from the Company’s manufacturing site or delivery to the customer’s named location, based on the contractual shipping terms of a contract.

In determining whether control has transferred, the Company considers if there is a present right to payment from the customer and when physical possession, legal title and risks and rewards of ownership have transferred to the customer.

The Company typically invoices customers upon satisfaction of identified performance obligations. As the Company’s standard payment terms are 30 to 90 days from invoicing, the Company does not provide any significant financing to its customers.

Sales, value add, and other taxes collected on behalf of third parties are excluded from revenue.

Variable Consideration

Revenues from product sales are recorded at the net sales price (transaction price), which includes estimates of variable consideration for which reserves are established for discounts, returns, rebates and allowances that are offered within contracts between the Company and its customers. These reserves are based on the amounts earned or to be claimed on the related sales and are classified as a current liability.

Rebates and Allowances:The Company provides certain customers with rebates and allowances that are explicitly stated in the Company’s contracts and are recorded as a reduction of revenue in the period the related product revenue is recognized. The Company establishes a liability for such amounts, which is included in accrued expenses in the accompanying condensed consolidated balance sheets. These rebates and allowances result from performance-based offers that are primarily based on attaining contractually specified sales volumes and administrative fees the Company is required to pay to group purchasing organizations. The Company records the amount of rebates and allowances that are explicitly stated in the Company’s contracts based on actual purchases.

Product Returns: The Company generally offers customers a limited right of return. Product returns after 30 days must be pre-approved by the Company and customers may be subject to a 20% restocking charge. To be accepted, a returned product must be unadulterated, undamaged and have at least twelve months remaining prior to its expiration date. The Company estimates the amount of its product sales that may be returned by its customers and records this estimate as a reduction of revenue in the period the related product revenue is recognized. The Company currently estimates product return liabilities using its historical product return information and considers other factors that it believes could significantly impact its expected returns, including product recalls. During the quarter, such product returns were not material.

Contract Balances with Customers

A receivable is recognized in the period the Company ships the product. Payment terms on invoiced amounts are based on contractual terms with each customer and generally coincide with revenue recognition. Accordingly, the Company does not have any contract assets associated with the future right to invoice its customers. In some cases, if control of the product has not yet transferred to the customer or the timing of the payments made by the customer precedes the Company’s fulfillment of the performance obligation, the Company recognizes a contract liability that is included in deferred revenue in the accompanying condensed consolidated balance sheets.

The following table presents changes in the Company’s receivables, contract assets and contract liabilities with customers:

	Aug 31, 2018		May 31, 2018
(in thousands)
Receivables	$	40,164	$	39,401
Contract assets	$	—	$	—
Contract liabilities	$	1,153	$	1,203

During the three months ended August 31, 2018, the Company recognized $0.1 million in revenue that was included in contract liabilities as of the beginning of the period.

Costs to Obtain or Fulfill a Customer Contract

Prior to the adoption of ASC 606, the Company expensed incremental commissions paid to sales representatives for obtaining product sales. Under ASC 606, the Company recognizes an asset for incremental costs of obtaining a contract with a customer if it expects to recover those costs. The Company’s sales incentive compensation plans qualify for capitalization since these plans are directly related to sales achieved during a period of time. However, the Company has elected the practical expedient under ASC 340-40-25-4 to expense the costs as they are incurred within selling and marketing expenses since the amortization period is less than one year.

The Company accounts for shipping and handling activities related to contracts with customers as costs to fulfill the promise to transfer the associated products. Shipping and handling costs, associated with the distribution of finished products to customers, are recorded in costs of goods sold and are recognized when the related finished product is shipped to the customer. Amounts charged to customers for shipping are recorded in net sales.

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Inventories

3 Months Ended

Aug. 31, 2018

Inventory Disclosure [Abstract]

Inventories

INVENTORIES

Inventories are stated at lower of cost and net realizable value (using the first-in, first-out method). Inventories consisted of the following:

	Aug 31, 2018		May 31, 2018
(in thousands)
Raw materials	$	21,556	$	18,678
Work in process	9,829		10,808
Finished goods	18,336		19,430
Inventories	$	49,721	$	48,916

The Company periodically reviews for both obsolescence and loss of value. The Company makes assumptions about the future demand for and market value of the inventory. Based on these assumptions, the Company estimates the amount of obsolete, expiring and slow moving inventory. The total inventory reserve at both August 31, 2018 and May 31, 2018 was $6.1 million. Of the $6.1 million reserve as of August 31, 2018 and May 31, 2018, $1.6 million relates to the inventory reserve for Acculis inventory as a result of the recall announced in the fourth quarter of fiscal year 2017 and $0.7 million relates to a specific reserve related to the termination of an agreement with a Japanese distributor in the second quarter of fiscal year 2018.

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Goodwill and Intangible Assets

3 Months Ended

Aug. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

GOODWILL AND INTANGIBLE ASSETS

Intangible assets other than goodwill are amortized over their estimated useful lives on either a straight-line basis or proportionately to the benefit being realized. Useful lives range from two to eighteen years. The Company periodically reviews the estimated useful lives of our intangible assets and review such assets or asset groups for impairment whenever events or changes in circumstances indicate that the carrying value of the assets or asset groups may not be recoverable. If an intangible asset or asset group 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 is not amortized, but rather, is 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.

The changes in the carrying amount of goodwill for the three months ended August 31, 2018 were as follows:

(in thousands)
Goodwill balance at June 1, 2018	$	361,252
Additions for BioSentry acquisition (Note 2)	21,740
Goodwill balance at August 31, 2018	$	382,992

The Company's annual testing for impairment of goodwill was completed as of December 31, 2017. The Company operates as a single operating segment with one reporting unit and consequently evaluates goodwill for impairment based on an evaluation of the fair value of the Company as a whole. The Company determines the fair value of the reporting unit based on the market valuation approach and concluded that it was not more-likely-than-not that the fair value of the Company's reporting unit was less than its carrying value.

Even though the Company determined that there was no goodwill impairment as of December 31, 2017, the future occurrence of a potential indicator of impairment, such as a significant adverse change in legal, regulatory, business or economic conditions or a more-likely-than-not expectation that the reporting unit or a significant portion of the reporting unit will be sold or disposed of, would require an interim assessment for the reporting unit prior to the next required annual assessment as of December 31, 2018. The Company continued to assess for potential impairment through August 31, 2018 and noted no events that would be considered a triggering event.

Intangible assets consisted of the following:

	August 31, 2018
	Gross carrying value		Accumulated amortization			Net carrying value
(in thousands)
Product technologies	$	160,973	$	(71,204	)	$	89,769
Customer relationships	58,917		(24,199		)	34,718
Trademarks	30,100		(12,411		)	17,689
Licenses	5,752		(4,527		)	1,225
Distributor relationships	1,250		(457		)	793
	$	256,992	$	(112,798	)	$	144,194

	May 31, 2018
	Gross carrying value		Accumulated amortization			Net carrying value
(in thousands)
Product technologies	$	147,175	$	(68,880	)	$	78,295
Customer relationships	56,428		(23,237		)	33,191
Trademarks	28,400		(11,809		)	16,591
Licenses	5,752		(4,357		)	1,395
Distributor relationships	1,250		(412		)	838
	$	239,005	$	(108,695	)	$	130,310

Amortization expense for the three months ended August 31, 2018 and 2017 was $4.1 million and $4.1 million, respectively.

Expected future amortization expense related to the intangible assets is as follows:

(in thousands)
Remainder of 2019	$	13,457
2020	16,280
2021	15,121
2022	14,236
2023	13,786
2024 and thereafter	71,314
	$	144,194

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Accrued Liabilities

3 Months Ended

Aug. 31, 2018

Payables and Accruals [Abstract]

Accrued Liabilities

ACCRUED LIABILITIES

Accrued liabilities consisted of the following:

	Aug 31, 2018		May 31, 2018
(in thousands)
Payroll and related expenses	$	6,381	$	10,235
Royalties	1,121		1,537
Accrued severance	1,428		1,940
Sales and franchise taxes	1,425		683
Outside services	4,557		2,396
Litigation matters	—		12,500
Other	4,988		5,135
	$	19,900	$	34,426

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Long Term Debt

3 Months Ended

Aug. 31, 2018

Debt Disclosure [Abstract]

Long Term Debt

LONG TERM DEBT

On November 7, 2016, the Company 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 JPMorgan Chase Bank, N.A., Merrill Lynch, Pierce, Fenner & Smith Incorporated and Keybank National Association as joint bookrunners and joint lead arrangers.

The Credit Agreement provides for a $100.0 million senior secured term loan facility (“Term Loan”) and a $150.0 million senior secured revolving credit facility, which includes up to a $20.0 million sublimit for letters of credit and a $5.0 million sublimit for swingline loans (the “Revolving Facility”, and together with the Term Loan, the “Facilities”).

On November 7, 2016, the Company borrowed $100.0 million under the Term Loan and approximately $16.5 million under the Revolving Facility to repay the balance of $116.5 million under the former credit agreement. As of August 31, 2018 and May 31, 2018 the carrying value of long-term debt approximates its fair market value.

The interest rate on the Term Loan at August 31, 2018 was 3.58%.

The Company was in compliance with the Credit Agreement covenants as of August 31, 2018.

The Company's maturities of principal obligations under the Credit Agreement are as follows, as of August 31, 2018:

(in thousands)
Remainder of 2019	$	3,750
2020	7,500
2021	11,250
2022	68,750
Total term loan	91,250
Revolving facility	—
Total debt	91,250
Less: Unamortized debt issuance costs	(806		)
Total	90,444
Less: Current portion of long-term debt	(5,000		)
Total long-term debt, net	$	85,444

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Income Taxes

3 Months Ended

Aug. 31, 2018

Income Tax Disclosure [Abstract]

Income Taxes

INCOME TAXES

The Company provides for income taxes at the end of each interim period based on the estimated effective tax rate for the full fiscal year adjusted for any discrete events, which are recorded in the period that they occur.  The estimated annual effective tax rate prior to discrete items was 2.3% in the first quarter of fiscal 2019, as compared to 52.9% for the same period in fiscal 2018. In fiscal 2019, the Company’s effective tax rate differs from the U.S. statutory rate primarily due to the impact of the valuation allowance, foreign taxes and state taxes.

On December 22, 2017, the United States enacted the Tax Cuts and Jobs Act of 2017 (the “Tax Reform Act”). The Tax Reform Act is significant and has wide-ranging effects.

The Company is still studying all of the ramifications of the Tax Reform Act, but expects the primary material impact of the Act to be the remeasurement of the Company’s naked credit deferred tax liability, which was recorded in fiscal 2018 as a result of the reduction in U.S. corporate tax rates from 35% to 21%. The Tax Reform Act imposes a one-time transition tax on the deemed repatriation of post-1986 undistributed foreign subsidiaries’ earnings. Based on the information available as of December 31, 2017, the Company estimated undistributed foreign earnings in fiscal 2018. The taxable income arising from this deemed repatriation is expected to result in the utilization of net operating loss carryforwards and other tax credits, offset by changes in the valuation allowance, resulting in no net impact to tax expense. No changes have been made to these estimates and the Company expects to complete its accounting for these items within the prescribed measurement period.

The Tax Reform Act also creates a new requirement that certain income earned by foreign subsidiaries (“GILTI”), must be included in U.S. gross income. The FASB allows an accounting policy election of either recognizing deferred taxes for temporary differences expected to reverse as GILTI in future years or recognizing such taxes as a current period expense when incurred. The Company has not yet adopted an accounting policy.

The Company regularly assesses its ability to realize its deferred tax assets. Assessing the realization of deferred tax assets requires significant management judgment. In determining whether its deferred tax assets are more likely than not realizable, the Company evaluated all available positive and negative evidence, and weighted the evidence based on its objectivity. Evidence the Company considered included its history of net operating losses, which resulted in the Company recording a full valuation allowance for its deferred tax assets in fiscal 2016 and each year thereafter.

Based on the review of all available evidence, the Company determined that it has not yet attained a sustained level of profitability and the objectively verifiable negative evidence outweighed the positive evidence and therefore the Company has provided a valuation allowance on its federal and state net operating loss carryforwards, federal and state R&D credit carryforwards and other net deferred tax assets that have a limited life and are not supportable by the naked credit deferred tax liability sourced income as of August 31, 2018. The Company will continue to assess the level of the valuation allowance required. If sufficient positive evidence exists in future periods to support a release of some or all of the valuation allowance, such a release would likely have a material impact on the Company’s results of operations.

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Share-Based Compensation

3 Months Ended

Aug. 31, 2018

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

Share-Based Compensation

SHARE-BASED COMPENSATION

The Company has two stock-based compensation plans that provide for the issuance of up to approximately 9.5 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. The Company also has an employee stock purchase plan.

For the three months ended August 31, 2018 and 2017, share-based compensation expense was $2.2 million and $1.8 million, respectively.

During the three months ended August 31, 2018 and 2017, 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 the Company's 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 three months of fiscal year 2019, the Company granted market-based 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 the Company's shares on the date of grant and use a Monte Carlo simulation model.

As of August 31, 2018, there was $20.0 million of unrecognized compensation expense 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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Earnings Per Share

3 Months Ended

Aug. 31, 2018

Earnings Per Share [Abstract]

Earnings Per Share

EARNINGS PER SHARE

Basic earnings per share is based on the weighted average number of common shares outstanding without consideration of potential common stock. Diluted earnings per share includes the dilutive effect of potential common stock consisting of stock options, restricted stock units and performance stock units, provided that the inclusion of such securities is not anti-dilutive. In periods with a net loss, stock options and restricted stock units are not included in the computation of diluted 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, 2018 and 2017 (in thousands):

	Three Months Ended
(in thousands)	Aug 31, 2018	Aug 31, 2017
Basic	37,323	36,919
Effect of dilutive securities	—	—
Diluted	37,323	36,919
Securities excluded as their inclusion would be anti-dilutive	2,309	1,085

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Segment and Geographic Information

3 Months Ended

Aug. 31, 2018

Segment Reporting [Abstract]

Segment and Geographic Information

SEGMENT AND GEOGRAPHIC INFORMATION

The Company considers the business to be a single operating segment engaged in the development, manufacture and sale of medical devices for vascular access, peripheral vascular disease and oncology on a global basis. The Company's chief operating decision maker, the President and Chief Executive Officer (CEO), evaluates the various global product portfolios on a net sales basis. Executives reporting to the CEO include those responsible for commercial operations, manufacturing operations, regulatory and quality 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 Global Business Unit:

	Three Months Ended
(in thousands)	Aug 31, 2018		Aug 31, 2017
Net sales
Vascular Interventions & Therapies	$	49,995	$	49,865
Vascular Access	23,790		23,238
Oncology	11,555		12,308
Total	$	85,340	$	85,411

The table below presents net sales by geographic area based on external customer location:

	Three Months Ended
(in thousands)	Aug 31, 2018		Aug 31, 2017
Net sales
United States	$	67,684	$	68,931
International	17,656		16,480
Total	$	85,340	$	85,411

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Fair Value

3 Months Ended

Aug. 31, 2018

Fair Value Disclosures [Abstract]

Fair Value

FAIR VALUE

On a recurring basis, the Company measures certain financial assets and financial liabilities at fair value based upon quoted market prices, where available. Where quoted market prices or other observable inputs are not available, the Company applies valuation techniques to estimate fair value. FASB ASC Topic 820, Fair Value Measurements and Disclosures, establishes a three-level valuation hierarchy for disclosure of fair value measurements. The categorization of financial assets and financial liabilities within the valuation hierarchy is based upon the lowest level of input that is significant to the measurement of fair value. The three levels of the hierarchy are defined as follows:

• Level 1 - Inputs to the valuation methodology are quoted market prices for identical assets or liabilities.

• Level 2 - Inputs to the valuation methodology are other observable inputs, including quoted market prices for similar assets or liabilities and market-corroborated inputs.

• Level 3 - Inputs to the valuation methodology are unobservable inputs based on management’s best estimate of inputs market participants would use in pricing the asset or liability at the measurement date, including assumptions about risk.

The Company's financial instruments include cash and cash equivalents, marketable securities, accounts receivable, accounts payable and contingent consideration. The carrying amount of cash and cash equivalents, accounts receivable, and accounts payable approximates fair value due to the immediate or short-term maturities. The Company's recurring fair value measurements using significant unobservable inputs (Level 3) relate to our marketable securities, which are comprised of auction rate securities, and contingent consideration.

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, 2018 and May 31, 2018:

	Fair Value Measurements using inputs considered as:						Fair Value at August 31, 2018
(in thousands)	Level 1		Level 2		Level 3
Financial Assets
Marketable securities	$	—	$	—	$	1,350	$	1,350
Total Financial Assets	$	—	$	—	$	1,350	$	1,350
Financial Liabilities
Contingent consideration for acquisition earn out	$	—	$	—	$	3,973	$	3,973
Total Financial Liabilities	$	—	$	—	$	3,973	$	3,973
	Fair Value Measurements using inputs considered as:						Fair Value at May 31, 2018
(in thousands)	Level 1		Level 2		Level 3
Financial Assets
Short-term investments*	$	2,100	$	—	$	—	$	2,100
Marketable securities	—		—		1,317		1,317
Total Financial Assets	$	2,100	$	—	$	1,317	$	3,417
Financial Liabilities
Contingent consideration for acquisition earn out	$	—	$	—	$	3,261	$	3,261
Total Financial Liabilities	$	—	$	—	$	3,261	$	3,261

*Included in cash and cash equivalents.

There were no transfers between Level 1, 2 and 3 for the three months ended August 31, 2018.

The table below presents the changes in fair value components of Level 3 instruments in the three months ended August 31, 2018:

	Three Months Ended August 31, 2018
	Financial Assets		Financial Liabilities
(in thousands)	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)		Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Balance, May 31, 2018	$	1,317	$	3,261
Total gains or losses (realized/unrealized):
Contingent consideration liability recorded as the result of an acquisition (Note 2)	—		2,800
Change in present value of contingent consideration (1)	—		12
Fair market value adjustments	33		—
Contingent consideration payments	—		(2,100		)
Balance, August 31, 2018	$	1,350	$	3,973

(1) Change in the fair value of contingent consideration is included in earnings and comprised of changes in estimated earn out payments based on projections of Company performance and amortization of the present value discount.

Short-term Investments

Short-term investments consist of highly liquid investments in municipal bonds that reset on a weekly basis and can be called at any point in time.

Marketable Securities

Marketable securities consist solely of an auction rate security. Assumptions associated with the auction rate security include 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.

Contingent Consideration for Acquisition Earn Outs

Some 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 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 and is determined using a discounted cash flow model applied to projected net sales, using probabilities of achieving projected net sales 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, 2018:

	Fair value at
(in thousands)	Aug 31, 2018		Valuation Technique	Unobservable Input	Range
Revenue based payments	$	1,173	Discounted cash flow	Discount rate	4%
				Probability of payment	100%
				Projected fiscal year of payment	2019-2020
Supplier default holdback payment	$	2,800	Estimated probability	Estimated probability	95%
				Project fiscal year of payment	2019

At August 31, 2018, the estimated potential amount of undiscounted future contingent consideration that we expect to pay as a result of all completed acquisitions is approximately $4.2 million, which represents the remaining contractual minimum payments.

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Marketable Securities

3 Months Ended

Aug. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

MARKETABLE SECURITIES

Marketable securities, which can be government agency bonds, auction rate investments or corporate commercial paper, are classified as “available-for-sale securities” are reported at fair value, with unrealized gains and losses excluded from operations and reported as accumulated other comprehensive income (loss), net of related tax effects, in stockholders' equity. Cost is determined using the specific identification method. We hold an investment in an auction rate security that is high credit quality and generally achieved with municipal bond insurance. 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 security in the near term. We have not participated in any recent auctions. As of August 31, 2018 and May 31, 2018, we had $1.4 million and $1.3 million, respectively, in investments in one auction rate security. The authorities are current in their interest payments on the security. The auction rate security will mature in 2029.

As of August 31, 2018 and May 31, 2018, marketable securities consisted of the following:

	August 31, 2018
(in thousands)	Amortized cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Available-for-sale securities:
Government agency obligations	$	1,350	$	—	$	—	$	1,350
	$	1,350	$	—	$	—	$	1,350

	May 31, 2018
(in thousands)	Amortized cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available-for-sale securities:
Government agency obligations	$	1,350	$	—	$	(33	)	$	1,317
	$	1,350	$	—	$	(33	)	$	1,317

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Commitments and Contingencies

3 Months Ended

Aug. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

COMMITMENTS AND CONTINGENCIES    

Legal Proceedings

The Company is involved in various legal proceedings, including commercial, intellectual property, product liability, and regulatory 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.

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

On January 11, 2012, C.R. Bard, Inc. (“Bard”) filed a suit in the United States District Court of Utah claiming certain of our implantable port products infringe on three U.S. patents held by Bard (the "Utah Action"). Bard’s Complaint sought unspecified damages and other relief. We filed petitions for reexamination in the US Patent and Trademark Office ("USPTO") seeking to invalidate all three patents asserted by Bard in the litigation. Our petitions were granted and 40 of Bard's 41 patent claims were rejected and, following further proceedings, the Patent Office issued a Final Rejection of all 40 claims subject to reexamination. Thereafter, Bard filed appeals to the USPTO Board of Appeals and Interferences for all three reexaminations. The Patent Office issued decisions in all three appeals. In one (issued on March 11, 2016 for US Patent No. 7,785,302), the rejections of six of the ten claims under reexamination were affirmed, but were reversed on four of the ten claims. In the second (issued on March 24, 2016 for U.S. Patent No. 7,959,615), the rejections of eight of the ten claims under reexamination were affirmed but the rejections of the other two of the ten claims were reversed. In the third (issued on March 29 for U.S. Patent No. 7,947.022) the rejections of all twenty claims under reexamination were affirmed. Thereafter, Bard filed Requests for Rehearing in all three reexamination appeals and the Company filed Requests for Rehearing in two of the reexamination appeals (the ‘302 and ‘615 patent reexaminations). The PTO denied all three Rehearing Requests - - on February 1, 2017 for the ‘302; on February 17, 2017 for the ‘022; and on February 21, 2017 for the ‘615, but modified its characterization of one prior art reference for the ‘302 and ‘022 decisions.  Bard filed a Notice of Appeal to the Federal Circuit Court of Appeals in all three reexams and the Company filed Cross-Appeals for the ‘302 and the ‘615 reexams. The parties have completed the process of filing the various appellate briefs.  MedComp also filed an Amicus Brief in support of the Company on November 22, 2017. An oral hearing in the case was held on September 5, 2018. The Utah Action has been stayed pending final resolution of the USPTO 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.

On March 10, 2015, C.R. Bard, Inc. ("Bard") and Bard Peripheral Vascular, Inc. (“BPV”) filed suit in the United States District Court for the District of Delaware claiming certain of our implantable port products infringe on three U.S. patents held by Bard (the “Delaware Action"). Bard's complaint seeks unspecified damages and other relief. The patents asserted in the Delaware Action are different than those asserted in the Utah Action. On June 1, 2015, the Company filed two motions in response to Bard’s Complaint - one sought transfer to the District of Utah where the Utah Action is currently pending, and the other sought dismissal of the entire complaint on grounds that none of the claims in the asserted patents is directed to patent eligible subject matter under Section 101 of the Patent Statute and in light of recent authority from the U. S. Supreme Court. On January 12, 2016, the Court issued a decision denying both motions. A Markman hearing was held on March 10, 2017 and the Court issued its Claim Construction Order on May 19, 2017. On May 19, 2017, Bard served its Final Infringement Contentions and on June 2, 2017, the Company served its Final Invalidity Contentions.

On October 20, 2017, the scheduling order for the case was amended to, among other things, set a trial date commencing July 23, 2018. The parties completed Expert Discovery in January 2018. The parties completed briefing on their respective case dispositive motions on April 27, 2018. On June 26, 2018, the Court denied all case dispositive motions, ruling that issues of material fact remained in dispute. On July 9, 2018, the Court continued the trial until March 2019. 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.

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

On May 30, 2017, we commenced an action in the United States District Court for the Northern District of New York entitled AngioDynamics, Inc. v. C.R. Bard, Inc. and Bard Access Systems, Inc. (“Bard”).  In this action, we allege that Bard has illegally tied the sales of its tip location systems to the sales of its PICCs.  We allege that this practice violates the federal antitrust laws and has had, and continues to have, an anti-competitive effect in the market for PICCs.  We seek both monetary damages and injunctive relief. Bard moved to dismiss on September 8, 2017. On August 6, 2018 the court denied Bard’s motion in its entirety.  Initial conference in the case is scheduled for October 2, 2018.

Governmental Investigations

In June 2014 we received a subpoena from the U.S. Department of Justice (the “DOJ”) requesting documents in relation to a criminal and civil 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.

In April 2015 we received a subpoena from the DOJ requesting documents in relation to a criminal and civil investigation the DOJ is conducting regarding purported promotion of certain of AngioDynamics’ VenaCure EVLT products for un-cleared indications.  We are cooperating fully with this investigation.

As of May 31, 2017, the Company accrued $12.5 million for these matters and in August 2017 the Company agreed in principle with the government to resolve these matters for approximately $12.5 million plus interest. In July 2018, the Company executed the final settlements and paid approximately $12.7 million.

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Acquisition, Restructuring and Other Items, Net

3 Months Ended

Aug. 31, 2018

Restructuring and Related Activities [Abstract]

Acquisition, Restructuring and Other Items, Net

ACQUISITION, RESTRUCTURING, AND OTHER ITEMS, NET

Acquisition, Restructuring and Other Items

For the three months ended August 31, 2018 and 2017 acquisition, restructuring and other items, net consisted of:

	Three months ended
(in thousands)	Aug 31, 2018		Aug 31, 2017
Legal*	$	2,880	$	1,611
Mergers and acquisitions	1,318		153
Restructuring	130		1,216
Other	94		9
Total	$	4,422	$	2,989

*Legal expenses related to litigation that is outside of the normal course of business.

Restructuring

The Company evaluates its performance and looks for opportunities to improve the overall operations of the Company on an ongoing basis. As a result of this evaluation, certain restructuring initiatives are taken to enhance the Company’s overall operations.

Operational Consolidation

On February 1, 2017, the Company announced to employees an operational consolidation plan (the “plan”) to consolidate our manufacturing facilities in Manchester, GA and Denmead, UK into the Glens Falls and Queensbury, NY facilities. This plan will streamline and optimize the manufacturing functions into one centralized location increasing the utilization of the Glens Falls and Queensbury facilities, optimizing inventory and reducing cost of goods sold through savings in overhead expenses and direct labor. The restructuring activities associated with the plan were completed in the fourth quarter of fiscal year 2018 with immaterial costs to be incurred in fiscal year 2019.

The Company recorded restructuring charges related to the plan during the three months ended August 31, 2018 of $0.1 million. During the three months ended August 31, 2017, the Company recorded $1.2 million. Total restructuring charges recorded to date are $6.1 million. Termination benefits are only earned if an employee stays until their termination date; therefore, the expenses related to termination benefits are being recorded ratably over the service period.

The table below presents the restructuring reserve for the three months ended August 31, 2018:

	Three Months Ended August 31, 2018
	Termination Benefits			Plant Consolidation			Regulatory Filings			Contract Cancellation Costs		Other Costs		Total
(in thousands)
Balance at May 31, 2018	$	838		$	21		$	12		$	200	$	—	$	1,071
Charges	—			110			20			—		—		130
Non-cash adjustments	—			—			—			—		—		—
Cash payments	(521		)	(114		)	(18		)	—		—		(653		)
Balance at August 31, 2018	$	317		$	17		$	14		$	200	$	—	$	548

The Company’s restructuring liability of $0.5 million is mainly comprised of accruals for termination benefits which are included in accrued expenses on the consolidated balance sheet.

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Accumulated Other Comprehensive Income

3 Months Ended

Aug. 31, 2018

Equity [Abstract]

Accumulated Other Comprehensive Income (Loss)

ACCUMULATED OTHER COMPREHESIVE INCOME (LOSS)

Changes in each component of accumulated other comprehensive income (loss), net of tax, are as follows for the three months ended August 31, 2018:

	Three months ended August 31, 2018
(in thousands)	Foreign currency translation gain (loss)			Unrealized gain (loss) on marketable securities		Total
Balance at May 31, 2018	$	(1,035	)	$	83	$	(952	)
Other comprehensive income (loss) before reclassifications, net of tax	(125		)	33		(92		)
Amounts reclassified from accumulated other comprehensive income	—			—		—
Net other comprehensive income (loss)	$	(125	)	$	33	$	(92	)
Balance at August 31, 2018	$	(1,160	)	$	116	$	(1,044	)

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Recently Issued Accounting Pronouncements

3 Months Ended

Aug. 31, 2018

Accounting Changes and Error Corrections [Abstract]

Recently Issued Accounting Pronouncements

RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS

The following table provides a description of recent accounting pronouncements that may have a material effect on the Company's consolidated financial statements:

Recently Issued Accounting Pronouncements - Adopted
Standard	Description	Date Adopted	Effect on the Consolidated Financial Statements
ASU No. 2014-09, Revenue from Contracts with Customers (ASU 2014-09)	This ASU provides a single, comprehensive accounting model for revenues arising from contracts with customers that supersedes most of the existing revenue recognition guidance, including industry-specific guidance. Under this model, revenue is recognized at an amount that an entity expects to be entitled to upon transferring control of goods or services to a customer, as opposed to when risks and rewards transfer to a customer under existing revenue recognition guidance.	June 1, 2018	See Note 3, "Revenue from Contracts with Customers" for the required disclosures related to the impact of adopting this standard.                                                                  The adoption of this standard did not have a material impact on the Company’s consolidated balance sheets and statements of operations.
ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (ASU 2016-15)	This ASU identifies how certain cash receipts and cash payments are presented and classified in the Statement of Cash Flows under Topic 230.	June 1, 2018	This adoption did not have an impact on the Company's financial statements.

Recently Issued Accounting Pronouncements - Not Yet Applicable or Adopted
Standard	Description	Effective Date	Effect on the Consolidated Financial Statements
ASU 2016-02, Leases (Topic 842)	This ASU increases transparency and comparability among organizations by recognizing lease assets and liabilities on the balance sheet and disclosing key information about leasing arrangements. For leases with a term of twelve months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and liabilities.	June 1, 2019	The Company is currently in the process of evaluating the impact of this ASU on its consolidated financial statements.

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Subsequent Events

3 Months Ended

Aug. 31, 2018

Subsequent Events [Abstract]

Subsequent Events

SUBSEQUENT EVENTS

On September 21, 2018, the Company acquired RadiaDyne, a privately held medical diagnostic and device company that designs and develops patient dose monitoring technology to improve cancer treatment outcomes for an aggregate purchase price of $50.0 million with $40.0 million of potential future contingent consideration related to technology and revenue milestones. This acquisition expands the Company’s growing Oncology business by adding RadiaDyne’s early-stage, proprietary OARtrac® real-time radiation dose monitoring platform and other market-leading oncology solutions, including the IsoLoc®/ImmobiLoc® and Alatus® balloon stabilizing technologies.

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Recently Issued Accounting Pronouncements (Policies)

3 Months Ended

Aug. 31, 2018

Accounting Changes and Error Corrections [Abstract]

Revenue from Contracts with Customers

REVENUE FROM CONTRACTS WITH CUSTOMERS

Adoption of ASC Topic 606 "Revenue from Contracts with Customers"

The Company adopted ASC 606, Revenue from Contracts with Customers on June 1, 2018 using the modified retrospective method for all contracts not completed as of the date of adoption. The reported results for fiscal 2019 reflect the application of ASC 606 guidance while the reported results for fiscal 2018 were prepared under the guidance of ASC 605, Revenue Recognition (“ASC 605”). For discussion of the Company’s accounting policy for revenue recognition under ASC 605, refer to Item 8 of the Annual Report on Form 10-K for the year ended May 31, 2018. The adoption of ASC 606 did not have an impact on the Company’s consolidated balance sheet, results of operations, equity or cash flows as of the adoption date or for the periods presented, other than the enhanced disclosures included in this footnote.

Revenue Recognition

Under ASC 606, revenue is recognized when a customer obtains control of promised goods or services, in an amount that reflects the consideration which the entity expects to receive in exchange for those goods or services. To determine revenue recognition for arrangements that an entity determines are within the scope of ASC 606, the Company performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the contract; and (v) recognize revenue when (or as) the entity satisfies a performance obligation.

Contracts and Performance Obligations

The Company contracts with its customers based on customer purchase orders, which in many cases are governed by master purchasing agreements, to be contracts with customers. The Company’s contracts with customers are generally for product only, and do not include other performance obligations such as services or other material rights. As part of its assessment of each contract, the Company evaluates certain factors including the customer’s ability to pay (or credit risk). For each contract, the Company considers the promise to transfer products, each of which is distinct, to be the identified performance obligations.

Transaction Price and Allocation to Performance Obligations

Transaction prices of products are typically based on contracted rates. Product revenue is measured as the amount of consideration the Company expects to receive in exchange for transferring products to a customer. To the extent the transaction price includes variable consideration, the Company estimates the amount of variable consideration that should be included in the transaction price utilizing the expected value method. As such, revenue is recorded net of rebates, returns and other deductions.

If a contract contains a single performance obligation, the entire transaction price is allocated to the single performance obligation. Contracts that contain multiple performance obligations require an allocation of the transaction price based on the estimated relative standalone selling prices of the promised products underlying each performance obligation. The Company has standard pricing for its products and determines standalone selling prices based on the price at which the performance obligation is sold separately.

Revenue Recognition

Revenue is recognized when control of the product is transferred to the customer (i.e., when the Company’s performance obligation is satisfied), which occurs at a point in time, and may be upon shipment from the Company’s manufacturing site or delivery to the customer’s named location, based on the contractual shipping terms of a contract.

In determining whether control has transferred, the Company considers if there is a present right to payment from the customer and when physical possession, legal title and risks and rewards of ownership have transferred to the customer.

The Company typically invoices customers upon satisfaction of identified performance obligations. As the Company’s standard payment terms are 30 to 90 days from invoicing, the Company does not provide any significant financing to its customers.

Sales, value add, and other taxes collected on behalf of third parties are excluded from revenue.

Variable Consideration

Revenues from product sales are recorded at the net sales price (transaction price), which includes estimates of variable consideration for which reserves are established for discounts, returns, rebates and allowances that are offered within contracts between the Company and its customers. These reserves are based on the amounts earned or to be claimed on the related sales and are classified as a current liability.

Rebates and Allowances:The Company provides certain customers with rebates and allowances that are explicitly stated in the Company’s contracts and are recorded as a reduction of revenue in the period the related product revenue is recognized. The Company establishes a liability for such amounts, which is included in accrued expenses in the accompanying condensed consolidated balance sheets. These rebates and allowances result from performance-based offers that are primarily based on attaining contractually specified sales volumes and administrative fees the Company is required to pay to group purchasing organizations. The Company records the amount of rebates and allowances that are explicitly stated in the Company’s contracts based on actual purchases.

Product Returns: The Company generally offers customers a limited right of return. Product returns after 30 days must be pre-approved by the Company and customers may be subject to a 20% restocking charge. To be accepted, a returned product must be unadulterated, undamaged and have at least twelve months remaining prior to its expiration date. The Company estimates the amount of its product sales that may be returned by its customers and records this estimate as a reduction of revenue in the period the related product revenue is recognized. The Company currently estimates product return liabilities using its historical product return information and considers other factors that it believes could significantly impact its expected returns, including product recalls. During the quarter, such product returns were not material.

Contract Balances with Customers

A receivable is recognized in the period the Company ships the product. Payment terms on invoiced amounts are based on contractual terms with each customer and generally coincide with revenue recognition. Accordingly, the Company does not have any contract assets associated with the future right to invoice its customers. In some cases, if control of the product has not yet transferred to the customer or the timing of the payments made by the customer precedes the Company’s fulfillment of the performance obligation, the Company recognizes a contract liability that is included in deferred revenue in the accompanying condensed consolidated balance sheets.

Costs to Obtain or Fulfill a Customer Contract

Prior to the adoption of ASC 606, the Company expensed incremental commissions paid to sales representatives for obtaining product sales. Under ASC 606, the Company recognizes an asset for incremental costs of obtaining a contract with a customer if it expects to recover those costs. The Company’s sales incentive compensation plans qualify for capitalization since these plans are directly related to sales achieved during a period of time. However, the Company has elected the practical expedient under ASC 340-40-25-4 to expense the costs as they are incurred within selling and marketing expenses since the amortization period is less than one year.

The Company accounts for shipping and handling activities related to contracts with customers as costs to fulfill the promise to transfer the associated products. Shipping and handling costs, associated with the distribution of finished products to customers, are recorded in costs of goods sold and are recognized when the related finished product is shipped to the customer. Amounts charged to customers for shipping are recorded in net sales.

Recently Issued Accounting Pronouncements

RECENTLY ISSUED ACCOUNTING PRONOUNCEMENTS

The following table provides a description of recent accounting pronouncements that may have a material effect on the Company's consolidated financial statements:

Recently Issued Accounting Pronouncements - Adopted
Standard	Description	Date Adopted	Effect on the Consolidated Financial Statements
ASU No. 2014-09, Revenue from Contracts with Customers (ASU 2014-09)	This ASU provides a single, comprehensive accounting model for revenues arising from contracts with customers that supersedes most of the existing revenue recognition guidance, including industry-specific guidance. Under this model, revenue is recognized at an amount that an entity expects to be entitled to upon transferring control of goods or services to a customer, as opposed to when risks and rewards transfer to a customer under existing revenue recognition guidance.	June 1, 2018	See Note 3, "Revenue from Contracts with Customers" for the required disclosures related to the impact of adopting this standard.                                                                  The adoption of this standard did not have a material impact on the Company’s consolidated balance sheets and statements of operations.
ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (ASU 2016-15)	This ASU identifies how certain cash receipts and cash payments are presented and classified in the Statement of Cash Flows under Topic 230.	June 1, 2018	This adoption did not have an impact on the Company's financial statements.

Recently Issued Accounting Pronouncements - Not Yet Applicable or Adopted
Standard	Description	Effective Date	Effect on the Consolidated Financial Statements
ASU 2016-02, Leases (Topic 842)	This ASU increases transparency and comparability among organizations by recognizing lease assets and liabilities on the balance sheet and disclosing key information about leasing arrangements. For leases with a term of twelve months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and liabilities.	June 1, 2019	The Company is currently in the process of evaluating the impact of this ASU on its consolidated financial statements.

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Acquisitions (Tables)

3 Months Ended

Aug. 31, 2018

Business Combinations [Abstract]

Preliminary Aggregate Purchase Price

The following table summarizes the preliminary aggregate purchase price allocated to the net assets acquired:

	Aug 14, 2018
(in thousands)
Inventory	$	50
Property, plant and equipment	10
Intangible assets:
BioSentry trademark	1,700
BioSentry product technology	13,800
Customer relationships	2,500
Goodwill	21,740
Net assets acquired	$	39,800

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Revenue from Contracts with Customers (Tables)

3 Months Ended

Aug. 31, 2018

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following tables summarize net product revenue by Global Business Unit ("GBU") and geography for the three months ended August 31, 2018:

(in thousands)	United States		International		Total
Net sales
Vascular Interventions & Therapies	$	42,039	$	7,956	$	49,995
Vascular Access	20,447		3,343		23,790
Oncology	5,198		6,357		11,555
Total	$	67,684	$	17,656	$	85,340

Contract Balances with Customers

The following table presents changes in the Company’s receivables, contract assets and contract liabilities with customers:

	Aug 31, 2018		May 31, 2018
(in thousands)
Receivables	$	40,164	$	39,401
Contract assets	$	—	$	—
Contract liabilities	$	1,153	$	1,203

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Inventories (Tables)

3 Months Ended

Aug. 31, 2018

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories are stated at lower of cost and net realizable value (using the first-in, first-out method). Inventories consisted of the following:

	Aug 31, 2018		May 31, 2018
(in thousands)
Raw materials	$	21,556	$	18,678
Work in process	9,829		10,808
Finished goods	18,336		19,430
Inventories	$	49,721	$	48,916

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Goodwill and Intangible Assets (Tables)

3 Months Ended

Aug. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The changes in the carrying amount of goodwill for the three months ended August 31, 2018 were as follows:

(in thousands)
Goodwill balance at June 1, 2018	$	361,252
Additions for BioSentry acquisition (Note 2)	21,740
Goodwill balance at August 31, 2018	$	382,992

Intangible Assets

Intangible assets consisted of the following:

	August 31, 2018
	Gross carrying value		Accumulated amortization			Net carrying value
(in thousands)
Product technologies	$	160,973	$	(71,204	)	$	89,769
Customer relationships	58,917		(24,199		)	34,718
Trademarks	30,100		(12,411		)	17,689
Licenses	5,752		(4,527		)	1,225
Distributor relationships	1,250		(457		)	793
	$	256,992	$	(112,798	)	$	144,194

	May 31, 2018
	Gross carrying value		Accumulated amortization			Net carrying value
(in thousands)
Product technologies	$	147,175	$	(68,880	)	$	78,295
Customer relationships	56,428		(23,237		)	33,191
Trademarks	28,400		(11,809		)	16,591
Licenses	5,752		(4,357		)	1,395
Distributor relationships	1,250		(412		)	838
	$	239,005	$	(108,695	)	$	130,310

Schedule of Future Amortization Expense

Expected future amortization expense related to the intangible assets is as follows:

(in thousands)
Remainder of 2019	$	13,457
2020	16,280
2021	15,121
2022	14,236
2023	13,786
2024 and thereafter	71,314
	$	144,194

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Accrued Liabilities (Tables)

3 Months Ended

Aug. 31, 2018

Payables and Accruals [Abstract]

Accrued Liabilities

Accrued liabilities consisted of the following:

	Aug 31, 2018		May 31, 2018
(in thousands)
Payroll and related expenses	$	6,381	$	10,235
Royalties	1,121		1,537
Accrued severance	1,428		1,940
Sales and franchise taxes	1,425		683
Outside services	4,557		2,396
Litigation matters	—		12,500
Other	4,988		5,135
	$	19,900	$	34,426

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Long Term Debt (Tables)

3 Months Ended

Aug. 31, 2018

Debt Disclosure [Abstract]

Schedule of Debt

The Company's maturities of principal obligations under the Credit Agreement are as follows, as of August 31, 2018:

(in thousands)
Remainder of 2019	$	3,750
2020	7,500
2021	11,250
2022	68,750
Total term loan	91,250
Revolving facility	—
Total debt	91,250
Less: Unamortized debt issuance costs	(806		)
Total	90,444
Less: Current portion of long-term debt	(5,000		)
Total long-term debt, net	$	85,444

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Earnings Per Share (Tables)

3 Months Ended

Aug. 31, 2018

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, 2018 and 2017 (in thousands):

	Three Months Ended
(in thousands)	Aug 31, 2018	Aug 31, 2017
Basic	37,323	36,919
Effect of dilutive securities	—	—
Diluted	37,323	36,919
Securities excluded as their inclusion would be anti-dilutive	2,309	1,085

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Segment and Geographic Information (Tables)

3 Months Ended

Aug. 31, 2018

Segment Reporting [Abstract]

Summary of Net Sales by Product Category

The table below summarizes net sales by Global Business Unit:

	Three Months Ended
(in thousands)	Aug 31, 2018		Aug 31, 2017
Net sales
Vascular Interventions & Therapies	$	49,995	$	49,865
Vascular Access	23,790		23,238
Oncology	11,555		12,308
Total	$	85,340	$	85,411

Summary of Net Sales by Geographic Area

The table below presents net sales by geographic area based on external customer location:

	Three Months Ended
(in thousands)	Aug 31, 2018		Aug 31, 2017
Net sales
United States	$	67,684	$	68,931
International	17,656		16,480
Total	$	85,340	$	85,411

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Fair Value (Tables)

3 Months Ended

Aug. 31, 2018

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, 2018 and May 31, 2018:

	Fair Value Measurements using inputs considered as:						Fair Value at August 31, 2018
(in thousands)	Level 1		Level 2		Level 3
Financial Assets
Marketable securities	$	—	$	—	$	1,350	$	1,350
Total Financial Assets	$	—	$	—	$	1,350	$	1,350
Financial Liabilities
Contingent consideration for acquisition earn out	$	—	$	—	$	3,973	$	3,973
Total Financial Liabilities	$	—	$	—	$	3,973	$	3,973
	Fair Value Measurements using inputs considered as:						Fair Value at May 31, 2018
(in thousands)	Level 1		Level 2		Level 3
Financial Assets
Short-term investments*	$	2,100	$	—	$	—	$	2,100
Marketable securities	—		—		1,317		1,317
Total Financial Assets	$	2,100	$	—	$	1,317	$	3,417
Financial Liabilities
Contingent consideration for acquisition earn out	$	—	$	—	$	3,261	$	3,261
Total Financial Liabilities	$	—	$	—	$	3,261	$	3,261

*Included in cash and cash equivalents.

Fair Value Measurements Using Significant Unobservable Inputs

The table below presents the changes in fair value components of Level 3 instruments in the three months ended August 31, 2018:

	Three Months Ended August 31, 2018
	Financial Assets		Financial Liabilities
(in thousands)	Fair Value Measurements Using Significant Unobservable Inputs (Level 3)		Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
Balance, May 31, 2018	$	1,317	$	3,261
Total gains or losses (realized/unrealized):
Contingent consideration liability recorded as the result of an acquisition (Note 2)	—		2,800
Change in present value of contingent consideration (1)	—		12
Fair market value adjustments	33		—
Contingent consideration payments	—		(2,100		)
Balance, August 31, 2018	$	1,350	$	3,973

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, 2018:

	Fair value at
(in thousands)	Aug 31, 2018		Valuation Technique	Unobservable Input	Range
Revenue based payments	$	1,173	Discounted cash flow	Discount rate	4%
				Probability of payment	100%
				Projected fiscal year of payment	2019-2020
Supplier default holdback payment	$	2,800	Estimated probability	Estimated probability	95%
				Project fiscal year of payment	2019

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Marketable Securities (Tables)

3 Months Ended

Aug. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

As of August 31, 2018 and May 31, 2018, marketable securities consisted of the following:

	August 31, 2018
(in thousands)	Amortized cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Available-for-sale securities:
Government agency obligations	$	1,350	$	—	$	—	$	1,350
	$	1,350	$	—	$	—	$	1,350

	May 31, 2018
(in thousands)	Amortized cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available-for-sale securities:
Government agency obligations	$	1,350	$	—	$	(33	)	$	1,317
	$	1,350	$	—	$	(33	)	$	1,317

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Acquisition, Restructuring and Other Items, Net (Tables)

3 Months Ended

Aug. 31, 2018

Restructuring and Related Activities [Abstract]

Restructuring and Related Costs

For the three months ended August 31, 2018 and 2017 acquisition, restructuring and other items, net consisted of:

	Three months ended
(in thousands)	Aug 31, 2018		Aug 31, 2017
Legal*	$	2,880	$	1,611
Mergers and acquisitions	1,318		153
Restructuring	130		1,216
Other	94		9
Total	$	4,422	$	2,989

*Legal expenses related to litigation that is outside of the normal course of business.

The table below presents the restructuring reserve for the three months ended August 31, 2018:

	Three Months Ended August 31, 2018
	Termination Benefits			Plant Consolidation			Regulatory Filings			Contract Cancellation Costs		Other Costs		Total
(in thousands)
Balance at May 31, 2018	$	838		$	21		$	12		$	200	$	—	$	1,071
Charges	—			110			20			—		—		130
Non-cash adjustments	—			—			—			—		—		—
Cash payments	(521		)	(114		)	(18		)	—		—		(653		)
Balance at August 31, 2018	$	317		$	17		$	14		$	200	$	—	$	548

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Accumulated Other Comprehensive Income (Loss) (Tables)

3 Months Ended

Aug. 31, 2018

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss)

Changes in each component of accumulated other comprehensive income (loss), net of tax, are as follows for the three months ended August 31, 2018:

	Three months ended August 31, 2018
(in thousands)	Foreign currency translation gain (loss)			Unrealized gain (loss) on marketable securities		Total
Balance at May 31, 2018	$	(1,035	)	$	83	$	(952	)
Other comprehensive income (loss) before reclassifications, net of tax	(125		)	33		(92		)
Amounts reclassified from accumulated other comprehensive income	—			—		—
Net other comprehensive income (loss)	$	(125	)	$	33	$	(92	)
Balance at August 31, 2018	$	(1,160	)	$	116	$	(1,044	)

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Recently Issued Accounting Pronouncements (Tables)

3 Months Ended

Aug. 31, 2018

Accounting Changes and Error Corrections [Abstract]

Recently Issued Accounting Pronouncements

The following table provides a description of recent accounting pronouncements that may have a material effect on the Company's consolidated financial statements:

Recently Issued Accounting Pronouncements - Adopted
Standard	Description	Date Adopted	Effect on the Consolidated Financial Statements
ASU No. 2014-09, Revenue from Contracts with Customers (ASU 2014-09)	This ASU provides a single, comprehensive accounting model for revenues arising from contracts with customers that supersedes most of the existing revenue recognition guidance, including industry-specific guidance. Under this model, revenue is recognized at an amount that an entity expects to be entitled to upon transferring control of goods or services to a customer, as opposed to when risks and rewards transfer to a customer under existing revenue recognition guidance.	June 1, 2018	See Note 3, "Revenue from Contracts with Customers" for the required disclosures related to the impact of adopting this standard.                                                                  The adoption of this standard did not have a material impact on the Company’s consolidated balance sheets and statements of operations.
ASU No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (ASU 2016-15)	This ASU identifies how certain cash receipts and cash payments are presented and classified in the Statement of Cash Flows under Topic 230.	June 1, 2018	This adoption did not have an impact on the Company's financial statements.

Recently Issued Accounting Pronouncements - Not Yet Applicable or Adopted
Standard	Description	Effective Date	Effect on the Consolidated Financial Statements
ASU 2016-02, Leases (Topic 842)	This ASU increases transparency and comparability among organizations by recognizing lease assets and liabilities on the balance sheet and disclosing key information about leasing arrangements. For leases with a term of twelve months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and liabilities.	June 1, 2019	The Company is currently in the process of evaluating the impact of this ASU on its consolidated financial statements.

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Consolidated Financial Statements - Additional Information (Detail) - USD ($) $ in Thousands	Sep. 21, 2018	Aug. 14, 2018	Aug. 31, 2018	May 31, 2018
Business Acquisition [Line Items]
Contingent consideration for acquisition earn out			$ 3,973	$ 3,261
RadiaDyne | Subsequent Event
Business Acquisition [Line Items]
Aggregate purchase price	$ 50,000
Contingent consideration for acquisition earn out	$ 40,000
BioSentry
Business Acquisition [Line Items]
Aggregate purchase price of assets		$ 40,000
Payments to acquire assets		37,000
Supplier default holdback payment		$ 3,000	$ 2,800

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Acquisitions - Narrative (Details) - USD ($) $ in Millions		3 Months Ended
	Aug. 14, 2018	Aug. 31, 2018
Schedule of Asset Acquisitions, by Acquisition [Line Items]
Acquisition related costs		$ 1.0
BioSentry
Schedule of Asset Acquisitions, by Acquisition [Line Items]
Aggregate purchase price of assets	$ 40.0
Payments to acquire assets	37.0
Supplier default holdback payment	$ 3.0	$ 2.8
BioSentry | Trademark
Schedule of Asset Acquisitions, by Acquisition [Line Items]
Useful life	15 years
BioSentry | Product technology
Schedule of Asset Acquisitions, by Acquisition [Line Items]
Useful life	15 years
BioSentry | Customer relationships
Schedule of Asset Acquisitions, by Acquisition [Line Items]
Useful life	10 years

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Acquisitions - BioSentry Acquisition (Details) - USD ($) $ in Thousands	Aug. 31, 2018	Aug. 14, 2018	May 31, 2018
Schedule of Asset Acquisitions, by Acquisition [Line Items]
Inventories	$ 49,721		$ 48,916
Property, plant and equipment	42,163		42,461
Intangible assets	144,194		130,310
Goodwill	382,992		361,252
Total assets	$ 693,871		$ 705,472
BioSentry
Schedule of Asset Acquisitions, by Acquisition [Line Items]
Inventories		$ 50
Property, plant and equipment		10
Goodwill		21,740
Total assets		39,800
BioSentry | Trademark
Schedule of Asset Acquisitions, by Acquisition [Line Items]
Intangible assets		1,700
BioSentry | Product technology
Schedule of Asset Acquisitions, by Acquisition [Line Items]
Intangible assets		13,800
BioSentry | Customer relationships
Schedule of Asset Acquisitions, by Acquisition [Line Items]
Intangible assets		$ 2,500

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Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2018	Aug. 31, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 85,340	$ 85,411
United States
Disaggregation of Revenue [Line Items]
Net sales	67,684	68,931
International
Disaggregation of Revenue [Line Items]
Net sales	17,656	16,480
Vascular Interventions & Therapies
Disaggregation of Revenue [Line Items]
Net sales	49,995	49,865
Vascular Interventions & Therapies | United States
Disaggregation of Revenue [Line Items]
Net sales	42,039
Vascular Interventions & Therapies | International
Disaggregation of Revenue [Line Items]
Net sales	7,956
Vascular Access
Disaggregation of Revenue [Line Items]
Net sales	23,790	23,238
Vascular Access | United States
Disaggregation of Revenue [Line Items]
Net sales	20,447
Vascular Access | International
Disaggregation of Revenue [Line Items]
Net sales	3,343
Oncology
Disaggregation of Revenue [Line Items]
Net sales	11,555	$ 12,308
Oncology | United States
Disaggregation of Revenue [Line Items]
Net sales	5,198
Oncology | International
Disaggregation of Revenue [Line Items]
Net sales	$ 6,357

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Revenue from Contracts with Customers - Narrative (Details) $ in Millions	3 Months Ended
	Aug. 31, 2018 USD ($)
Disaggregation of Revenue [Line Items]
Days after purchase after which pre-approval is required for product return	30 days
Restocking charge (as percent)	20.00%
Minimum remaining period prior to product expiration	12 months
Revenue recognized from contract liability balances in respective periods	$ 0.1
Minimum
Disaggregation of Revenue [Line Items]
Payment term	30 days
Maximum
Disaggregation of Revenue [Line Items]
Payment term	90 days

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Revenue from Contracts with Customers - Contract Balances with Customers (Details) - USD ($) $ in Thousands	Aug. 31, 2018	May 31, 2018
Revenue from Contract with Customer [Abstract]
Receivables	$ 40,164	$ 39,401
Contract assets	0	0
Contract liabilities	$ 1,153	$ 1,203

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Inventories - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Aug. 31, 2018	May 31, 2018
Inventory Disclosure [Abstract]
Raw materials	$ 21,556	$ 18,678
Work in process	9,829	10,808
Finished goods	18,336	19,430
Inventories	$ 49,721	$ 48,916

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Inventories - Narrative (Detail) - USD ($) $ in Millions	3 Months Ended
	Nov. 30, 2017	May 31, 2017	Aug. 31, 2018	May 31, 2018
Inventory Disclosure [Abstract]
Inventory valuation reserves			$ 6.1	$ 6.1
Inventory write-down	$ 0.7	$ 1.6

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Goodwill and Intangible Assets - Narrative (Detail)		3 Months Ended		12 Months Ended
	Dec. 31, 2017 USD ($)	Aug. 31, 2018 USD ($) segment	Aug. 31, 2017 USD ($)	May 31, 2017
Finite-Lived Intangible Assets [Line Items]
Number of reporting units | segment		1
Goodwill impairment	$ 0
Amortization of intangibles		$ 4,116,000	$ 4,096,000
Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets other than goodwill		2 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life of intangible assets other than goodwill				18 years

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Goodwill and Intangible Assets - Goodwill (Details) $ in Thousands	3 Months Ended
	Aug. 31, 2018 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 361,252
Additions for BioSentry acquisition (Note 2)	21,740
Goodwill, ending balance	$ 382,992

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Goodwill and Intangible Assets - Intangible Assets (Detail) - USD ($) $ in Thousands	Aug. 31, 2018	May 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, excluding goodwill	$ 256,992	$ 239,005
Accumulated amortization	(112,798)	(108,695)
Net carrying value, finite intangible items	144,194
Net carrying value, excluding goodwill	144,194	130,310
Product technologies
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, finite intangible items	160,973	147,175
Accumulated amortization	(71,204)	(68,880)
Net carrying value, finite intangible items	89,769	78,295
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, finite intangible items	58,917	56,428
Accumulated amortization	(24,199)	(23,237)
Net carrying value, finite intangible items	34,718	33,191
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, finite intangible items	30,100	28,400
Accumulated amortization	(12,411)	(11,809)
Net carrying value, finite intangible items	17,689	16,591
Licenses
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, finite intangible items	5,752	5,752
Accumulated amortization	(4,527)	(4,357)
Net carrying value, finite intangible items	1,225	1,395
Distributor relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying value, finite intangible items	1,250	1,250
Accumulated amortization	(457)	(412)
Net carrying value, finite intangible items	$ 793	$ 838

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Goodwill and Intangible Assets - Expected Future Amortization Expense (Detail) $ in Thousands	Aug. 31, 2018 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2019	$ 13,457
2020	16,280
2021	15,121
2022	14,236
2023	13,786
2024 and thereafter	71,314
Net carrying value, finite intangible items	$ 144,194

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Accrued Liabilities - Summary of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Aug. 31, 2018	May 31, 2018
Other Liabilities Disclosure [Abstract]
Payroll and related expenses	$ 6,381	$ 10,235
Royalties	1,121	1,537
Accrued severance	1,428	1,940
Sales and franchise taxes	1,425	683
Outside services	4,557	2,396
Litigation matters	0	12,500
Other	4,988	5,135
Total	$ 19,900	$ 34,426

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Long Term Debt - Narrative (Detail) - USD ($)		3 Months Ended
	Nov. 07, 2016	Aug. 31, 2018	Aug. 31, 2017
Debt Instrument [Line Items]
Repayments of former credit agreement		$ 1,250,000	$ 1,250,000
Credit Facility | JPMorgan Chase Bank, N.A., Bank of America, N.A., Keybank National Association
Debt Instrument [Line Items]
Stated interest rate		3.58%
Credit Facility | JPMorgan Chase Bank, N.A., Bank of America, N.A., Keybank National Association | Former Credit Agreement
Debt Instrument [Line Items]
Repayments of former credit agreement	$ 116,500,000
Credit Facility | JPMorgan Chase Bank, N.A., Bank of America, N.A., Keybank National Association | Term Loan
Debt Instrument [Line Items]
Line of credit	100,000,000
Proceeds from issuance of and borrowings on long-term debt	100,000,000
Credit Facility | JPMorgan Chase Bank, N.A., Bank of America, N.A., Keybank National Association | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit	150,000,000
Proceeds from issuance of and borrowings on long-term debt	16,500,000
Credit Facility | JPMorgan Chase Bank, N.A., Bank of America, N.A., Keybank National Association | Letters of Credit
Debt Instrument [Line Items]
Line of credit	20,000,000
Credit Facility | JPMorgan Chase Bank, N.A., Bank of America, N.A., Keybank National Association | Swingline Loan
Debt Instrument [Line Items]
Line of credit	$ 5,000,000

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Long Term Debt - Debt Outstanding (Detail) - USD ($) $ in Thousands	Aug. 31, 2018	May 31, 2018
Debt Instrument [Line Items]
Total debt	$ 91,250
Less: Unamortized debt issuance costs	(806)
Total	90,444
Less: Current portion of long-term debt	(5,000)	$ (5,000)
Total long-term debt, net	85,444
Term Loan | Credit Facility
Debt Instrument [Line Items]
Remainder of 2019	3,750
2020	7,500
2021	11,250
2022	68,750
Total debt	91,250
Revolving Credit Facility | Credit Facility
Debt Instrument [Line Items]
Total debt	$ 0

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Income Taxes - Additional Information (Detail)	3 Months Ended
	Aug. 31, 2018	Aug. 31, 2017
Income Tax Disclosure [Abstract]
Estimated federal statutory income tax rate	2.30%	52.90%

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Share-Based Compensation - Narrative (Detail) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Aug. 31, 2018	Aug. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Charges against income for share-based payment arrangements	$ 2.2	$ 1.8
Unrecognized compensation expenses related to share-based payment arrangements	$ 20.0
Recognition period	4 years
Market-based Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Requisite service period	3 years
The 2004 Plan and Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount of shares issuable through two stock-based compensation plans	9.5

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Earnings Per Share - Reconciliation of Basic to Diluted Weighted-Average Shares Outstanding (Detail) - shares shares in Thousands	3 Months Ended
	Aug. 31, 2018	Aug. 31, 2017
Earnings Per Share [Abstract]
Basic (shares)	37,323	36,919
Effect of dilutive securities (shares)	0	0
Diluted (shares)	37,323	36,919
Securities excluded as their inclusion would be anti-dilutive (shares)	2,309	1,085

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Segment and Geographic Information - Summary of Net Sales by Product Category (Detail) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2018	Aug. 31, 2017
Segment Reporting Information [Line Items]
Net sales	$ 85,340	$ 85,411
Vascular Interventions & Therapies
Segment Reporting Information [Line Items]
Net sales	49,995	49,865
Vascular Access
Segment Reporting Information [Line Items]
Net sales	23,790	23,238
Oncology
Segment Reporting Information [Line Items]
Net sales	$ 11,555	$ 12,308

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Segment and Geographic Information - Summary of Net Sales by Geographic Area (Detail) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2018	Aug. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 85,340	$ 85,411
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	67,684	68,931
International
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 17,656	$ 16,480

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Fair Value - Fair Value of Assets and Liabilities Measured on a Recurring Basis (Detail) - USD ($) $ in Thousands	Aug. 31, 2018	May 31, 2018
Financial Liabilities
Contingent consideration for acquisition earn out	$ 3,973	$ 3,261
Recurring
Financial Assets
Short-term investments		2,100
Marketable securities	1,350	1,317
Total Financial Assets	1,350	3,417
Financial Liabilities
Total Financial Liabilities	3,973	3,261
Level 1 | Recurring
Financial Assets
Short-term investments		2,100
Marketable securities	0	0
Total Financial Assets	0	2,100
Financial Liabilities
Contingent consideration for acquisition earn out	0	0
Total Financial Liabilities	0	0
Level 2 | Recurring
Financial Assets
Short-term investments		0
Marketable securities	0	0
Total Financial Assets	0	0
Financial Liabilities
Contingent consideration for acquisition earn out	0	0
Total Financial Liabilities	0	0
Level 3 | Recurring
Financial Assets
Short-term investments		0
Marketable securities	1,350	1,317
Total Financial Assets	1,350	1,317
Financial Liabilities
Contingent consideration for acquisition earn out	3,973	3,261
Total Financial Liabilities	$ 3,973	$ 3,261

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Fair Value - Fair Value Measurements Using Significant Unobservable Inputs (Detail) $ in Thousands	3 Months Ended
	Aug. 31, 2018 USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Financial assets, begining balance	$ 1,317
Contingent consideration liability recorded as the result of an acquisition (Note 2)	0
Change in present value of contingent consideration	0
Fair market value adjustments	33
Contingent consideration payments	0
Financial assets, ending balance	1,350
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Financial liabilities, begining balance	3,261
Contingent consideration liability recorded as the result of an acquisition (Note 2)	2,800
Change in present value of contingent consideration	12
Fair market value adjustments	0
Financial liabilities, ending balance	3,973
Clinical Devices B.V [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Contingent consideration payments	$ (2,100)

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Fair Value - Summary Showing the Recurring Fair Value Measurements of the Contingent Consideration Liability (Detail) $ in Thousands	Aug. 31, 2018 USD ($)	May 31, 2018 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Revenue based payments	$ 3,973	$ 3,261
Level 3 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Revenue based payments	3,973	$ 3,261
Revenue based payments | Discounted cash flow | Level 3 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Revenue based payments	$ 1,173
Revenue based payments | Discount rate | Discounted cash flow | Level 3 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Revenue based payment, measure input (as percent)	0.04
Revenue based payments | Probability of payment | Discounted cash flow | Level 3 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Revenue based payment, measure input (as percent)	1.00
Supplier default holdback payment | Estimated probability | Level 3 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Supplier default holdback payment	$ 2,800
Supplier default holdback payment, measurement input (as percent)	0.95

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Fair Value - Additional Information (Detail) $ in Millions	Aug. 31, 2018 USD ($)
Fair Value Disclosures [Abstract]
Potential amount of undiscounted future contingent consideration	$ 4.2

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Marketable Securities - Narrative (Detail) $ in Millions	Aug. 31, 2018 USD ($) Investment	May 31, 2018 USD ($)
Marketable Securities [Abstract]
Investments in auction rate securities that failed auctions | $	$ 1.4	$ 1.3
Number of investments (investment) | Investment	1

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Marketable Securities (Detail) - USD ($) $ in Thousands	Aug. 31, 2018	May 31, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized cost	$ 1,350	$ 1,350
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	(33)
Fair Value	1,350	1,317
Government agency obligations
Debt Securities, Available-for-sale [Line Items]
Amortized cost	1,350	1,350
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	(33)
Fair Value	$ 1,350	$ 1,317

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Commitments and Coontingencies - Additional Information (Detail) $ in Millions							1 Months Ended	3 Months Ended	10 Months Ended
	Mar. 29, 2016 claim	Mar. 24, 2016 claim	Mar. 11, 2016 claim	Jun. 01, 2015 motion	Mar. 10, 2015 patent	Jan. 11, 2012 Petition claim reexamination_appeal	Jul. 31, 2018 USD ($)	Aug. 31, 2018 claim	Jan. 31, 2017 reexamination_appeal	Aug. 31, 2017 USD ($)
Loss Contingencies [Line Items]
Loss contingency accrual | $										$ 12.5
Payment of final settlements | $							$ 12.7
C.R. Bard, Inc.
Loss Contingencies [Line Items]
Number of petitions filed for reexamination of patents | Petition						3
Number of claims dismissed								40,000
The Utah Action
Loss Contingencies [Line Items]
Patent claims						41,000
Number of claims dismissed	20	8	6			40,000
Number of reexaminations | reexamination_appeal						3
Number of pending claims		10	10
Number of claims reversed		2	4
The Utah Action | Pending Litigation
Loss Contingencies [Line Items]
Number of reexaminations | reexamination_appeal									2
The Delaware Action
Loss Contingencies [Line Items]
Number of patents allegedly infringed upon				2	3
C.R. Bard, Inc. | The Utah Action | Pending Litigation
Loss Contingencies [Line Items]
Number of reexaminations | reexamination_appeal									3

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Acquisition, Restructuring and Other Items, Net - Summary (Detail) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2018	Aug. 31, 2017
Restructuring Cost and Reserve [Line Items]
Acquisition, restructuring and other items, net	$ 4,422	$ 2,989
Legal
Restructuring Cost and Reserve [Line Items]
Acquisition, restructuring and other items, net	2,880	1,611
Mergers and acquisitions
Restructuring Cost and Reserve [Line Items]
Acquisition, restructuring and other items, net	1,318	153
Restructuring
Restructuring Cost and Reserve [Line Items]
Acquisition, restructuring and other items, net	130	1,216
Other
Restructuring Cost and Reserve [Line Items]
Acquisition, restructuring and other items, net	$ 94	$ 9

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Acquisition, Restructuring and Other Items, Net - Narrative (Detail) - USD ($) $ in Thousands	3 Months Ended		19 Months Ended
	Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2018	May 31, 2018
Restructuring and Related Activities [Abstract]
Restructuring charges	$ 130	$ 1,200	$ 6,100
Restructuring liability	$ 548		$ 548	$ 1,071

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Acquisition, Restructuring and Other Items, Net - Costs Incurred (Detail) - USD ($) $ in Thousands	3 Months Ended		19 Months Ended
	Aug. 31, 2018	Aug. 31, 2017	Aug. 31, 2018
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	$ 1,071
Charges	130	$ 1,200	$ 6,100
Non-cash adjustments	0
Cash payments	(653)
Restructuring reserve, ending balance	548		548
Termination Benefits
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	838
Charges	0
Non-cash adjustments	0
Cash payments	(521)
Restructuring reserve, ending balance	317		317
Plant Consolidation
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	21
Charges	110
Non-cash adjustments	0
Cash payments	(114)
Restructuring reserve, ending balance	17		17
Regulatory Filings
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	12
Charges	20
Non-cash adjustments	0
Cash payments	(18)
Restructuring reserve, ending balance	14		14
Contract Cancellation Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	200
Charges	0
Non-cash adjustments	0
Cash payments	0
Restructuring reserve, ending balance	200		200
Other Costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance	0
Charges	0
Non-cash adjustments	0
Cash payments	0
Restructuring reserve, ending balance	$ 0		$ 0

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Accumulated Other Comprehensive Income (Loss) - Schedule (Detail) - USD ($) $ in Thousands	3 Months Ended
	Aug. 31, 2018	Aug. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ 542,595
Other comprehensive income (loss) before reclassifications, net of tax	(92)
Amounts reclassified from accumulated other comprehensive income	0
Net other comprehensive income (loss)	(92)	$ 283
Ending Balance	544,889
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(952)
Ending Balance	(1,044)	(952)
Foreign currency translation gain (loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) before reclassifications, net of tax	(125)
Amounts reclassified from accumulated other comprehensive income	0
Net other comprehensive income (loss)	(125)
Ending Balance	(1,160)	(1,035)
Unrealized gain (loss) on marketable securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss) before reclassifications, net of tax	33
Amounts reclassified from accumulated other comprehensive income	0
Net other comprehensive income (loss)	33
Ending Balance	$ 116	$ 83

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Subsequent Events (Details) - USD ($) $ in Thousands	Sep. 21, 2018	Aug. 31, 2018	May 31, 2018
Subsequent Event [Line Items]
Revenue based payments		$ 3,973	$ 3,261
Subsequent Event | RadiaDyne
Subsequent Event [Line Items]
Aggregate purchase price	$ 50,000
Revenue based payments	$ 40,000