10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

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

For the quarterly period ended September 30, 2017

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 001-09585

ABIOMED, INC.

(Exact name of registrant as specified in its charter)

DELAWARE	04-2743260
(State or other jurisdiction of incorporation or organization)	(IRS Employer Identification No.)

22 CHERRY HILL DRIVE

DANVERS, MASSACHUSETTS 01923

(Address of principal executive offices, including zip code)

(978) 646-1400

(Registrant’s telephone number, including area code)

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  ☒    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 (§ 229.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  ☒    No  ☐

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

Large accelerated filer	☒		Accelerated filer	☐
Non-accelerated filer	☐	(Do not check if a smaller reporting company)	Smaller reporting company	☐
Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

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

As of October 27, 2017, 44,216,145 shares of the registrant’s common stock, $.01 par value, were outstanding.

ABIOMED, INC. AND SUBSIDIARIES

TABLE OF CONTENTS

		Page
PART I - FINANCIAL INFORMATION:
Item 1.	Condensed Consolidated Financial Statements (unaudited)	3
	Condensed Consolidated Balance Sheets as of September 30, 2017 and March 31, 2017	3
	Condensed Consolidated Statements of Operations for the three and six months ended September 30, 2017 and 2016	4
	Condensed Consolidated Statements of Comprehensive Income for the three and six months ended September 30, 2017 and 2016	5
	Condensed Consolidated Statements of Cash Flows for the six months ended September 30, 2017 and 2016	6
	Notes to Condensed Consolidated Financial Statements (unaudited)	7
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	21
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	30
Item 4.	Controls and Procedures	30
PART II - OTHER INFORMATION:
Item 1.	Legal Proceedings	31
Item 1A.	Risk Factors	31
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	31
Item 3.	Defaults Upon Senior Securities	31
Item 4.	Mine Safety Disclosures	31
Item 5.	Other Information	31
Item 6.	Exhibits	32
SIGNATURES		33

NOTE REGARDING COMPANY REFERENCES

Throughout this report on Form 10-Q (the “Report”), “Abiomed, Inc.,” the “Company,” “we,” “us” and “our” refer to ABIOMED, Inc. and its consolidated subsidiaries.

NOTE REGARDING TRADEMARKS

ABIOMED, IMPELLA, IMPELLA 2.5, IMPELLA 5.0, IMPELLA LD, IMPELLA CP and IMPELLA RP are trademarks of ABIOMED, Inc., and are registered in the U.S. and certain foreign countries. AB5000 and cVAD REGISTRY are trademarks of ABIOMED, Inc. 

2

PART 1. FINANCIAL INFORMATION

ITEM 1: FINANCIAL STATEMENTS

ABIOMED, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

(in thousands, except share data)

	September 30, 2017			March 31, 2017
ASSETS
Current assets:
Cash and cash equivalents	$	44,536		$	39,040
Short-term marketable securities		218,661			190,908
Accounts receivable, net		57,327			54,055
Inventories		40,632			34,931
Prepaid expenses and other current assets		9,014			8,024
Total current assets		370,170			326,958
Long-term marketable securities		55,954			47,143
Property and equipment, net		97,697			87,777
Goodwill		34,332			31,045
In-process research and development		16,016			14,482
Long-term deferred tax assets, net		106,798			34,723
Other assets		13,686			8,286
Total assets	$	694,653		$	550,414
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
Accounts payable	$	16,667		$	20,620
Accrued expenses		35,256			37,703
Deferred revenue		10,584			10,495
Current portion of capital lease obligation		851			799
Total current liabilities		63,358			69,617
Other long-term liabilities		598			3,251
Contingent consideration		9,835			9,153
Long-term deferred tax liabilities		866			783
Capital lease obligation, net of current portion		15,110			15,539
Total liabilities		89,767			98,343
Commitments and contingencies (Note 10)
Stockholders' equity:
Class B Preferred Stock, $.01 par value		—			—
Authorized - 1,000,000 shares; Issued and outstanding - none
Common stock, $.01 par value		442			437
Authorized - 100,000,000 shares; Issued - 45,921,029shares at September 30, 2017 and 45,249,281 shares at March 31, 2017
Outstanding - 44,200,784 shares at September 30, 2017 and 43,673,286 shares at March 31, 2017
Additional paid in capital		592,081			565,962
Retained earnings (accumulated deficit)		90,164			(46,959	)
Treasury stock at cost - 1,720,245 shares at September 30, 2017 and 1,575,995 shares at March 31, 2017		(65,999	)		(46,763	)
Accumulated other comprehensive loss		(11,802	)		(20,606	)
Total stockholders' equity		604,886			452,071
Total liabilities and stockholders' equity	$	694,653		$	550,414

The accompanying notes are an integral part of the condensed consolidated financial statements (unaudited)

3

ABIOMED, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited)

(in thousands, except per share data)

	For the Three Months Ended September 30,						For the Six Months Ended September 30,
	2017			2016			2017		2016
Revenue:
Product revenue	$	132,782		$	102,928		$	265,213	$	205,917
Funded research and development		41			27			78		33
		132,823			102,955			265,291		205,950
Costs and expenses:
Cost of product revenue		21,627			17,309			43,489		32,379
Research and development		19,390			18,052			36,321		33,712
Selling, general and administrative		60,080			53,086			120,677		104,118
		101,097			88,447			200,487		170,209
Income from operations		31,726			14,508			64,804		35,741
Other income (expense):
Investment income, net		781			342			1,416		611
Other (expense) income, net		(23	)		(114	)		56		(191	)
		758			228			1,472		420
Income before income taxes		32,484			14,736			66,276		36,161
Income tax provision		7,981			5,861			4,399		14,376
Net income	$	24,503		$	8,875		$	61,877	$	21,785
Basic net income per share	$	0.56		$	0.21		$	1.41	$	0.51
Basic weighted average shares outstanding		44,141			43,129			44,018		42,971
Diluted net income per share	$	0.54		$	0.20		$	1.36	$	0.49
Diluted weighted average shares outstanding		45,698			44,580			45,655		44,493

The accompanying notes are an integral part of the condensed consolidated financial statements (unaudited)

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ABIOMED, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)

(in thousands)

	For the Three Months Ended September 30,					For the Six Months Ended September 30,
	2017		2016			2017			2016
Net income	$	24,503	$	8,875		$	61,877		$	21,785
Other comprehensive gain (loss):
Foreign currency translation gains (losses)		2,696		812			8,849			(887	)
Net unrealized gains (losses) on marketable securities		10		(18	)		(45	)		132
Other comprehensive gain (loss)		2,706		794			8,804			(755	)
Comprehensive income	$	27,209	$	9,669		$	70,681		$	21,030

The accompanying notes are an integral part of the condensed consolidated financial statements (unaudited)

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ABIOMED, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(in thousands)

	For the Six Months Ended September 30,
	2017			2016
Operating activities:
Net income	$	61,877		$	21,785
Adjustments required to reconcile net income to net cash provided by    operating activities:
Depreciation expense		5,320			2,958
Bad debt expense		(54	)		(13	)
Stock-based compensation		17,938			18,047
Write-down of inventory and other assets		2,528			1,354
Excess tax benefit from stock-based awards		—			(3,631	)
Deferred tax provision		3,073			9,777
Change in fair value of contingent consideration		682			186
Changes in assets and liabilities:
Accounts receivable		(2,824	)		(3,807	)
Inventories		(5,363	)		(6,284	)
Prepaid expenses and other assets		(869	)		(2,029	)
Accounts payable		299			1,906
Accrued expenses and other liabilities		(3,174	)		3,157
Deferred revenue		18			330
Net cash provided by operating activities		79,451			43,736
Investing activities:
Purchases of marketable securities		(131,934	)		(134,235	)
Proceeds from the sale and maturity of marketable securities		95,416			116,685
Purchase of other investment		(6,400	)		—
Purchases of property and equipment		(17,675	)		(10,453	)
Net cash used for investing activities		(60,593	)		(28,003	)
Financing activities:
Proceeds from the exercise of stock options		5,257			5,764
Excess tax benefit from stock-based awards		—			3,631
Taxes paid related to net share settlement of vesting of stock awards		(19,237	)		(19,608	)
Proceeds from the issuance of stock under employee stock purchase plan		1,063			769
Principal payments on capital lease obligation		(377	)		(83	)
Net cash used for financing activities		(13,294	)		(9,527	)
Effect of exchange rate changes on cash		(68	)		272
Net increase in cash and cash equivalents		5,496			6,478
Cash and cash equivalents at beginning of period		39,040			48,231
Cash and cash equivalents at end of period	$	44,536		$	54,709
Supplemental disclosure of cash flow information:
Cash paid for income taxes	$	584		$	560
Cash paid for interest on capital lease obligation		259			89
Supplemental disclosure of non-cash investing and financing activities:
Property and equipment under capital lease obligation		—			16,784
Property and equipment in accounts payable and accrued expenses		897			3,810

The accompanying notes are an integral part of the condensed consolidated financial statements (unaudited)

6

ABIOMED, INC. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)

(In thousands, except share data)

Note 1. Nature of Business

Abiomed, Inc. (the “Company” or “Abiomed”) is a provider of mechanical circulatory support devices and offers a continuum of care to heart failure patients. The Company develops, manufactures and markets proprietary products that are designed to enable the heart to rest, heal and recover by improving blood flow and/or performing the pumping function of the heart. The Company’s products are used in the cardiac catheterization lab, or cath lab, by interventional cardiologists and in the heart surgery suite by heart surgeons for patients who are in need of hemodynamic support prophylactically or emergently before, during or after angioplasty or heart surgery procedures.

Note 2. Basis of Preparation and Summary of Significant Accounting Policies

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles, or GAAP, for interim financial reporting and in accordance with Article 10 of Regulation S-X. Accordingly, they do not include all of the information and note disclosures required by GAAP for complete financial statements. These statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2017 that has been filed with the Securities and Exchange Commission (the “SEC”).

In the opinion of management, the accompanying unaudited condensed consolidated financial statements include all normal and recurring adjustments that are necessary for a fair presentation of results for the interim periods presented. The results of operations for any interim period may not be indicative of results for the full fiscal year or any other subsequent period.

There have been no changes in the Company’s significant accounting policies for the three and six months ended September 30, 2017 as compared to the significant accounting policies described in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2017 that has been filed with the SEC.

New Accounting Pronouncements Adopted

Effective April 1, 2017, the Company adopted the Financial Accounting Standards Board (“FASB”) standard update ASU 2016-09, “Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting” (“ASU 2016-09”) which simplifies several aspects of the accounting for share-based payment transactions, including income tax consequences, recognition of stock compensation award forfeitures, classification of awards as either equity or liabilities, the calculation of diluted shares outstanding and classification on the statement of cash flows.

7

The following table summarizes the most significant impacts of ASU 2016-09 for the three and six months ended September 30, 2017:

Description of Change:	Impact of Change Upon Adoption on April 1, 2017 and for the Three and Six Months Ended September 30, 2017:	Adoption Method:
The new standard eliminates the requirement that excess tax benefits be realized through a reduction in income taxes payable before a company can recognize them in the statement of operations.	As a result, on April 1, 2017, the Company recorded a cumulative-effect adjustment to increase retained earnings and deferred tax assets by $76.4 million for excess tax benefits not previously recognized.	Modified-retrospective (required)
Excess tax benefits related to restricted stock unit vestings or stock option exercises are recorded through the statement of operations.	The income tax benefit for the three and six months ended September 30, 2017, included excess tax benefits of $4.5 million and $21.3 million, respectively. These recognized excess tax benefits resulted from restricted stock units that vested or stock options that were exercised during the three and six months ended September 30, 2017.	Prospective (required)
Excess tax benefits related to restricted stock unit vestings or stock option exercises are classified as operating cash flows instead of financing cash flows.	Increase in cash flow from operating activities and decrease in cash flow from financing activities by approximately $21.3 million for the six months ended September 30, 2017. The statement of cash flows for the prior period has not been adjusted.	Prospective (elected)
Calculation of diluted weighted average shares outstanding under the treasury method no longer assume that tax benefits related to stock-based awards are used to repurchase common stock.	The Company excluded the related tax benefits when applying the treasury stock method for computing diluted shares outstanding on a prospective basis as required by  ASU 2016-09.	Prospective (required)
An accounting policy election can be made to reduce stock-based compensation expense for forfeitures as they occur instead of estimating forfeitures that are expected to occur.	The Company made an accounting policy election to account for forfeitures as they occur with the change applied on a modified retrospective basis with a cumulative effect adjustment on April 1, 2017 to increase additional paid-in capital by $1.8 million, increase deferred tax assets by $0.7 million and decrease retained earnings by $1.1 million. The Company elected to make this accounting policy change to simplify the accounting for stock-based compensation and believes this method provides a more accurate reflection of periodic stock based compensation cost. Prior to the adoption of this accounting standard, the Company estimated at grant the likelihood that the award would ultimately vest, and revised the estimate, if necessary, in future periods if the actual forfeiture rate differed.	Modified-retrospective (elected)
Cash payments to tax authorities for shares withheld to meet employee tax withholding requirements on restricted stock units are classified as financing cash flow instead of operating cash flow.	No change since the Company has historically presented these amounts as a financing activity. Prior to ASU 2016-09, U.S. GAAP has not specified how these types of transactions should be classified in the statement of cash flows.	N/A

See table below for the changes in beginning stockholders' equity as a result of this implementation.

	Common Stock					Treasury Stock
	Number of shares			Par value		Number of shares			Amount				Additional Paid in Capital			Accumulated Deficit				Accumulated Other Comprehensive Income (Loss)				Total Stockholders' Equity
Balance, March 31, 2017		43,673,286	$		437		1,575,995	$		(46,763	)	$		565,962	$		(46,959	)	$		(20,606	)	$		452,071
Cumulative effect of adoption of new accounting standard														1,835			75,246								77,081
Balance, April 1, 2017		43,673,286	$		437		1,575,995	$		(46,763	)	$		567,797	$		28,287		$		(20,606	)	$		529,152

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Recent Accounting Pronouncements

In May 2014, the FASB issued ASU 2014-09,Revenue from Contracts with Customersto provide updated guidance on revenue recognition. This new standard will replace most of the existing revenue recognition guidance in U.S. GAAP when it becomes effective and permits the use of either the retrospective or cumulative effect transition method. ASU 2014-09 requires a company to recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies may need to use more judgment and make more estimates than under the current accounting guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. The guidance also requires expanded disclosures relating to the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. Additionally, qualitative and quantitative disclosures are required about customer contracts, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. The Company is assessing all of the potential impacts of the revenue recognition guidance. Although the Company has not yet completed its assessment of the new revenue recognition guidance, the Company believes that the new revenue recognition guidance generally supports the recognition of revenue at a point-in-time for product sales and over an extended period of time for preventative maintenance service agreements, which is consistent with its current revenue recognition model. The Company does anticipate that the new revenue standard will result in expanded financial statement disclosures relating to the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The Company is reviewing its internal controls and processes over revenue recognition in order to prepare for the adoption of and ongoing accounting under the new standard. As the Company completes its evaluation of this new accounting standard, new information may arise that could change the Company’s current understanding of the impact to revenue and expense recognized and financial statement disclosures. Additionally, the Company will continue to monitor industry activities and any additional guidance provided by regulators, standards setters, or the accounting profession and adjust the Company’s assessment and implementation plans accordingly, if required. ASU 2014-09 will become effective for the Company beginning in fiscal 2019.

In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities.  This guidance changes accounting for financial assets and financial liabilities under the fair value option and includes additional presentation and disclosure requirements for financial instruments. ASU 2016-01 requires financial assets to be measured at fair value with changes in fair value recognized in the statement of operations. The ASU eliminates the available-for-sale classification for marketable securities in which changes in fair value are currently recorded as a component of other comprehensive income. ASU 2016-01 is effective for annual reporting periods beginning after December 15, 2017, with early adoption permitted with specific application guidance. The Company is currently in the process determining the impact of the ASU 2016-01 amendment on its consolidated financial statements. ASU 2016-01 will become effective for the Company beginning in fiscal 2019.

In February 2016, the FASB issued ASU 2016-02, Leases. This guidance requires an entity to recognize lease liabilities and a right-of-use asset for all leases on the balance sheet and to disclose key information about the entity's leasing arrangements. ASU 2016-02 is effective for annual reporting periods beginning after December 15, 2018, including interim periods within that reporting period, with earlier adoption permitted. ASU 2016-02 must be adopted using a modified retrospective approach for all leases existing at, or entered into after the date of initial adoption, with an option to elect to use certain transition relief. The Company is currently in the process of evaluating its lessee arrangements to determine the impact of ASU 2016-02 amendment on its consolidated financial statements. This evaluation includes a review of the Company’s existing leasing arrangements on its facilities. ASU 2016-02 will become effective for the Company beginning in fiscal 2020.

9

Note 3. Net Income Per Share

Basic net income per share is computed by dividing net income by the weighted average number of common shares outstanding during the period. Diluted net income per share is computed by dividing net income by the weighted average number of dilutive common shares outstanding during the period. Diluted shares outstanding are calculated by adding to the weighted average shares outstanding any potential dilutive securities outstanding for the period. Potential dilutive securities include stock options, restricted stock units, performance-based stock awards and shares to be purchased under the Company’s employee stock purchase plan. The Company’s basic and diluted net income per share for the three and six months ended September 30, 2017 and 2016 were as follows (in thousands, except per share data):

	For the Three Months Ended September 30,				For the Six Months Ended September 30,
	2017		2016		2017		2016
Basic Net Income Per Share
Net income	$	24,503	$	8,875	$	61,877	$	21,785
Weighted average shares used in computing basic net    income per share		44,141		43,129		44,018		42,971
Net income per share - basic	$	0.56	$	0.21	$	1.41	$	0.51

	For the Three Months Ended September 30,				For the Six Months Ended September 30,
	2017		2016		2017		2016
Diluted Net Income Per Share
Net income	$	24,503	$	8,875	$	61,877	$	21,785
Weighted average shares used in computing basic net    income per share		44,141		43,129		44,018		42,971
Effect of dilutive securities		1,557		1,451		1,637		1,522
Weighted average shares used in computing diluted    net income per share		45,698		44,580		45,655		44,493
Net income per share - diluted	$	0.54	$	0.20	$	1.36	$	0.49

For the three and six months ended September 30, 2017, approximately 200 and 5,700 shares underlying out-of-the-money stock options, respectively, were excluded in the computation of diluted earnings per share because their effect would have been anti-dilutive. Also, approximately 77,000 restricted shares in each of the three and six months ended September 30, 2017, respectively, related to performance-based awards for which milestones have not been met, were not included in the computation of diluted earnings per share.

For the three and six months ended September 30, 2016, approximately 1,500 and 8,800 shares underlying out-of-the-money stock options, respectively, were excluded in the computation of diluted earnings per share because their effect would have been anti-dilutive. Also, approximately 186,000restricted shares in each of the three and six months ended September 30, 2016, related to performance-based awards for which milestones had not been met at that date were not included in the computation of diluted earnings per share.

Note 4. Marketable Securities and Fair Value Measurements

Marketable Securities

The Company’s marketable securities are classified as available-for-sale securities and, accordingly, are recorded at fair value. The difference between amortized cost and fair value is included in stockholders’ equity.

The Company’s marketable securities at September 30, 2017 and March 31, 2017 are invested in the following:

10

	Amortized		Gross Unrealized		Gross Unrealized			Fair Market
	Cost		Gains		Losses			Value
	(in $000's)
September 30, 2017:
Short-term U.S. Treasury mutual fund securities	$	36,178	$	—	$	(9	)	$	36,169
Short-term government-backed securities		124,654		—		(87	)		124,567
Short-term corporate debt securities		57,955		2		(32	)		57,925
Long-term government-backed securities		48,186		—		(61	)		48,125
Long-term corporate debt securities		7,835		—		(6	)		7,829
	$	274,808	$	2	$	(195	)	$	274,615

	Amortized		Gross Unrealized		Gross Unrealized			Fair Market
	Cost		Gains		Losses			Value
	(in $000's)
March 31, 2017
Short-term U.S. Treasury mutual fund securities	$	45,199	$	—	$	(13	)	$	45,186
Short-term government-backed securities		90,199		1		(87	)		90,113
Short-term corporate debt securities		55,465		—		(31	)		55,434
Long-term U.S. Treasury mutual fund securities		1,998		—		(3	)		1,995
Long-term government-backed securities		43,484		5		(18	)		43,471
Long-term corporate debt securities		1,853		—		(1	)		1,852
	$	238,198	$	6	$	(153	)	$	238,051

Fair Value Hierarchy

Fair value is defined as the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Financial assets and liabilities carried at fair value are to be classified and disclosed in one of the following three categories:

Level 1: Quoted market prices in active markets for identical assets or liabilities.

Level 2: Observable market-based inputs or unobservable inputs that are corroborated by market data.

Level 3: Unobservable inputs that are not corroborated by market data.

Level 1 primarily consists of financial instruments whose values are based on quoted market prices such as exchange-traded instruments and listed equities.

Level 2 includes financial instruments that are valued using models or other valuation methodologies. These models are primarily industry-standard models that consider various assumptions, including time value, yield curve, volatility factors, prepayment speeds, default rates, loss severity, current market and contractual prices for the underlying financial instruments, as well as other relevant economic measures. Substantially all of these assumptions are observable in the marketplace, can be derived from observable data or are supported by observable levels at which transactions are executed in the marketplace.

Level 3 is comprised of unobservable inputs that are supported by little or no market activity. Financial assets are considered Level 3 when their fair values are determined using pricing models, discounted cash flows, or similar techniques, and at least one significant model assumption or input is unobservable.

11

The following table presents the Company’s financial instruments recorded at fair value in the condensed consolidated balance sheets, classified according to the three categories described above:

	Level 1		Level 2		Level 3		Total
September 30, 2017:	(in $000's)
Assets
Short-term U.S. Treasury mutual fund securities	$	—	$	36,169	$	—	$	36,169
Short-term government-backed securities		—		124,567		—		124,567
Short-term corporate debt securities		—		57,925		—		57,925
Long-term government-backed securities		—		48,125		—		48,125
Long-term corporate debt securities		—		7,829		—		7,829
Liabilities
Contingent consideration		—		—		9,835		9,835

	Level 1		Level 2		Level 3		Total
March 31, 2017:	(in $000's)
Assets
Short-term U.S. Treasury mutual fund securities	$	—	$	45,186	$	—	$	45,186
Short-term government-backed securities		—		90,113		—		90,113
Short-term corporate debt securities		—		55,434		—		55,434
Long-term U.S. Treasury mutual fund securities		—		1,995		—		1,995
Long-term government-backed securities		—		43,471		—		43,471
Long-term corporate debt securities		—		1,852		—		1,852
Liabilities
Contingent consideration		—		—		9,153		9,153

The Company has determined that the estimated fair value of its investments in U.S. Treasury mutual fund securities, government-backed securities, and corporate debt securities are reported as Level 2 financial assets as they are not exchange-traded instruments.

The Company’s financial liabilities consisted of contingent consideration potentially payable related to the acquisition of ECP Entwicklungsgesellschaft mbH (“ECP”) and AIS GmbH Aachen Innovative Solutions (“AIS”), in July 2014. The Company acquired ECP for $13.0 million in cash, with additional potential payouts totaling $15.0 million based on the achievement of certain clinical and regulatory and revenue-based milestones. These potential milestone payments may be made, at the Company’s option, by a combination of cash or Abiomed common stock. The Company uses a combination of an income approach, based on various revenue and cost assumptions and applying a probability to each outcome and a Monte-Carlo valuation model. For the clinical and regulatory milestone, probabilities were applied to each potential scenario and the resulting values were discounted using a rate that considers weighted average cost of capital as well as a specific risk premium associated with the riskiness of the earn out itself, the related projections, and the overall business. The revenue-based milestone is valued using a Monte-Carlo valuation model, which simulates estimated future revenues during the earn out-period using management's best estimates. Projected revenues are based on our most recent internal operational budgets and long-range strategic plans.

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This liability is reported as Level 3 as the estimated fair value of the contingent consideration related to the acquisition of the ECP requires significant management judgment or estimation and is calculated using the following valuation methods:

	Fair Value at				Weighted Average
	September 30, 2017			Significant	(range, if
	(in $000's)		Valuation Methodology	Unobservable Input	applicable)
Clinical and regulatory milestone	$	5,660	Probability weighted income approach	Projected fiscal year of milestone payments	2019 to 2022
				Discount rate	2.6% to 3.1%
				Probability of occurrence	Probability adjusted level of 40% for the base case scenario and 0% to 28% for various upside and downside scenarios
Revenue-based milestone		4,175	Monte Carlo simulation model	Projected fiscal year of milestone payments	2023 to 2035
				Discount rate		18%
				Expected volatility for forecasted revenues		50%
	$	9,835

The following table summarizes the change in fair value, as determined by Level 3 inputs, of the contingent consideration for the three and six months ended September 30, 2017 and 2016:

	For the Three Months Ended September 30,				For the Six Months Ended September 30,
		2017		2016		2017		2016
	(in $000's)				(in $000's)
Level 3 liabilities, beginning balance	$	9,418	$	7,739	$	9,153	$	7,563
Additions		—		—		—		—
Payments		—		—		—		—
Change in fair value		417		10		682		186
Level 3 liabilities, ending balance	$	9,835	$	7,749	$	9,835	$	7,749

The change in fair value of the contingent consideration was primarily due to the passage of time on the fair value measurement of milestones related to the ECP acquisition. Adjustments associated with the change in fair value of contingent consideration are included in research and development expenses in the Company’s condensed consolidated statements of operations. Significant increases or decreases in any of the probabilities of success or changes in expected timelines for achievement of any of these milestones could result in a significantly higher or lower fair value of the liability. The fair value of the contingent consideration at each reporting date is updated by reflecting the changes in fair value reflected in the Company’s statement of operations. There is no assurance that any of the conditions for the milestone payments will be met.

Other Investments

The Company periodically makes investments in private medical device companies that focus on heart failure, heart pump and other medical device technologies. The aggregate carrying amount of the Company’s other investments was $12.6 million and $7.2 million at September 30, 2017 and March 31, 2017, respectively, and is classified within other assets in the unaudited condensed consolidated balance sheets. In July 2017, the Company made an additional $6.0 million investment in a private medical device company and recorded this transaction during the three months ended September 30, 2017. These investments are accounted for using

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the cost method and are evaluated for impairment and measured at fair value only if there are identified events or changes in circumstances that may have a significant adverse effect on the fair value of these investments.

Note 5. Property and Equipment

The components of property and equipment are as follows:

	September 30, 2017			March 31, 2017
Land	$	4,474		$	4,046
Building and building improvements		13,669			10,900
Capital lease asset		16,784			16,784
Leasehold improvements		37,292			34,854
Machinery and equipment		33,677			27,989
Furniture and fixtures		7,578			3,899
Construction in progress		10,458			9,257
Total cost		123,932			107,729
Less accumulated depreciation		(26,235	)		(19,952	)
	$	97,697		$	87,777

In August 2016, the Company entered into a new lease agreement to expand its existing corporate headquarters in Danvers, Massachusetts (see Note 10). The Company recorded $16.8 million for this lease as a capital lease asset with depreciation expense being recorded on a straight line basis over 15 years. In September 2017, the Company exercised its option to buy the corporate headquarters, including land and improvements, pursuant to the terms of the existing lease agreement. The Company entered into a purchase and sale agreement with the landlord and acquired the Company’s headquarters for approximately $16.5 million on October 30, 2017.

In December 2016, the Company entered into a purchase and sale agreement to acquire its existing European headquarters in Aachen, Germany, consisting of 33,000 square feet of space. The Company acquired the property in February 2017. The acquisition cost for the land and building was approximately $12.6 million, with $4.0 million being recorded to land and $8.6 million being recorded to the building and building improvements.

Note 6. Goodwill and In-Process Research and Development

The carrying amount of goodwill at September 30, 2017 and March 31, 2017 was $34.3 million and $31.0 million, respectively, and has been recorded in connection with the Company’s acquisition of Impella Cardiosystems AG, in May 2005 and ECP and AIS in July 2014. The goodwill activity is as follows:

	(in $000's)
Balance at March 31, 2017	$	31,045
Foreign currency translation impact		3,287
Balance at September 30, 2017	$	34,332

The Company evaluates goodwill and in-process research and development (“IPR&D”) assets at least annually at October 31, as well as whenever events or changes in circumstances suggest that the carrying amount may not be recoverable.  The Company has no accumulated impairment losses on goodwill or IPR&D assets.

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The carrying amount of IPR&D assets at September 30, 2017 and March 31, 2017 was $16.0 million and $14.5 million, respectively, and has been recorded in conjunction with the Company’s acquisition of ECP and AIS, in July 2014. The estimated fair value of IPR&D assets at the acquisition date was determined using a probability-weighted income approach, which discounts expected future cash flows to present value. The projected cash flows from the expandable catheter pump technology were based on certain key assumptions, including estimates of future revenue and expenses, taking into account the stage of development of the technology at the acquisition date and the time and resources needed to complete development. The Company used a discount rate of 21.5% and cash flows that have been probability adjusted to reflect the risks of product commercialization, which the Company believes are appropriate and representative of market participant assumptions.

The carrying value of the Company’s IPR&D assets and the change in the balance for the six months ended September 30, 2017 are as follows:

	(in $000's)
Balance at March 31, 2017	$	14,482
Foreign currency translation impact		1,534
Balance at September 30, 2017	$	16,016

Note 7. Accrued Expenses

Accrued expenses consist of the following:

	September 30, 2017		March 31, 2017
	(in $000's)
Employee compensation	$	21,643	$	23,290
Sales and income taxes		4,175		3,180
Professional, legal and accounting fees		3,178		2,019
Research and development		2,099		2,349
Marketing		1,452		1,827
Warranty		954		717
Accrued capital expenditures		—		2,300
Other		1,755		2,021
	$	35,256	$	37,703

Employee compensation consists primarily of accrued bonuses, accrued commissions and accrued employee benefits at September 30, 2017 and March 31, 2017.

Note 8. Stock-Based Compensation

The following table summarizes stock-based compensation expense by financial statement line item in the Company’s condensed consolidated statements of operations for the three and six months ended September 30, 2017 and 2016:

	For the Three Months Ended September 30,				For the Six Months Ended September 30,
		2017		2016		2017		2016
	(in $000's)				(in $000's)
Cost of product revenue	$	372	$	221	$	731	$	520
Research and development		1,205		2,638		2,544		3,893
Selling, general and administrative		7,705		6,791		14,663		13,634
	$	9,282	$	9,650	$	17,938	$	18,047

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Stock Options

The following table summarizes the stock option activity for the six months ended September 30, 2017:

						Weighted
				Weighted		Average		Aggregate
				Average		Remaining		Intrinsic
	Options			Exercise		Contractual		Value
	(in thousands)			Price		Term (years)		(in thousands)
Outstanding at beginning of period		1,646		$	32.09		5.46
Granted		145			137.70
Exercised		(305	)		17.25
Cancelled and expired		(51	)		100.48
Outstanding at end of period		1,435		$	43.47		5.56	$	179,543
Exercisable at end of period		1,098		$	24.23		4.57	$	158,474
Options vested and expected to vest at end of period		1,405		$	42.84		5.51	$	176,658

The aggregate intrinsic value of options exercised was $36.5 million for the six months ended September 30, 2017. The total fair value of options that vested during the six months ended September 30, 2017 was $4.4 million.

The remaining unrecognized stock-based compensation expense for unvested stock option awards at September 30, 2017 was approximately $11.6 million, net of forfeitures, and the weighted-average period over which this cost will be recognized is 2.5 years.

The Company estimates the fair value of each stock option granted at the grant date using the Black-Scholes option valuation model. The weighted average grant-date fair values and weighted average assumptions used in the calculation of fair value of options granted during the three and six months ended September 30, 2017 and 2016 was as follows:

	For the Three Months Ended September 30,						For the Six Months Ended September 30,
		2017			2016			2017			2016
Weighted average grant-date fair value	$	57.38		$	46.50		$	50.26		$	41.60
Valuation assumptions:
Risk-free interest rate		1.88	%		1.11	%		1.85	%		1.32	%
Expected option life (years)		4.06			4.14			4.07			4.13
Expected volatility		43.4	%		49.0	%		43.6	%		49.6	%

Restricted Stock Units

The following table summarizes activity of restricted stock units for the six months ended September 30, 2017:

	Number of Shares			Weighted Average Grant Date Fair Value
	(in thousands)			(per share)
Restricted stock units at beginning of period		1,056		$	80.50
Granted		291		$	136.17
Vested		(355	)	$	52.84
Forfeited		(90	)	$	97.51
Restricted stock units at end of period		902		$	107.71

The remaining unrecognized compensation expense for outstanding restricted stock units, including performance and market-based awards, as of September 30, 2017 was $44.6 million and the weighted-average period over which this cost will be recognized is 2.1 years.

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Performance-Based Awards

In May 2017, performance-based awards of restricted stock units for the potential issuance of approximately 159,000 shares of common stock were issued to certain executive officers and employees, all of which vest upon achievement of prescribed service milestones by the award recipients and performance milestones by the Company. As of September 30, 2017, the Company is recognizing compensation expense based on the probable outcome related to the prescribed performance targets on the outstanding awards.

Note 9. Income Taxes

The income tax provision represents the Company’s federal, state and foreign tax provision estimate. The Company’s income tax provision of $8.0 million and $4.4 million for the three and six months ended September 30, 2017, respectively. The Company’s income tax provision was $5.9 million and $14.4 million for the three and six months ended September 30, 2016, respectively.

As discussed further in “Note 2. Basis of Presentation and Summary of Significant Accounting Policies,” the Company adopted ASU 2016-09 in the first quarter of fiscal 2018. ASU 2016-09 requires excess tax benefits and shortfalls to be recognized in the income tax provision as discrete items in the period when restricted stock units vest or stock option exercises occur, whereas previously such income tax effects were recorded as part of additional paid-in capital only when the related tax deduction resulted in a reduction of current income taxes payable. On April 1, 2017, the Company recorded a cumulative-effect adjustment to increase retained earnings and deferred tax assets by $76.4 million for excess tax benefits not previously recognized. The adoption of ASU 2016-09 also resulted in excess tax benefits associated with stock-based awards of $4.5 million and $21.3 million being recognized as an income tax benefit for three and six months ended September 30, 2017, respectively. These recognized excess tax benefits resulted from restricted stock units that vested or stock options that were exercised during the three and six months ended September 30, 2017. The amount of future excess tax benefits or shortfalls will likely fluctuate from period to period based on the price of the Company’s stock, the number of restricted stock units vesting or stock option exercises, and the fair value assigned to such stock-based awards under U.S. GAAP. Accordingly, the Company’s expects that the adoption of ASU 2016-09 will result in more volatility to its effective income tax rate, net income and earnings per share in future periods.

The estimated annual effective income tax rate is based upon estimated income before income taxes for the year, the geographical composition of the estimated income before taxes and estimated permanent differences. The estimated annual effective income tax rate can fluctuate and may differ from the actual income tax rate recognized in fiscal 2018 for various reasons, including estimates of income before taxes, tax legislation, permanent differences, discrete items, and any adjustments between the income tax provision calculations and filed income tax returns.

The significant differences between the statutory income tax rate and effective income tax rate for the three and six months ended September 30, 2017 and 2016 were as follows:

	For the Three Months Ended September 30,							For the Six Months Ended September 30,
		2017			2016				2017			2016
Statutory income tax rate		35.0		%	35.0		%		35.0		%	35.0		%
Increase resulting from:
Excess tax benefits from stock-based awards		(13.7	)		—				(32.1	)		—
Credits		(1.2	)		(1.3	)			(1.2	)		(1.3	)
State taxes, net		3.5			3.4				3.5			3.3
Permanent differences		1.8			2.7				1.8			2.8
Other		(0.8	)		—				(0.4	)		—
Effective tax rate		24.6		%	39.8		%		6.6		%	39.8		%

The Company and its subsidiaries are subject to U.S. federal income tax, as well as income tax of multiple state and foreign jurisdictions. Fiscal years 2012 through 2017 remain open to examination in Germany and Abiomed Europe GmbH, the Company’s main operating subsidiary in Germany, is currently being audited for fiscal years 2012 through 2015. In July 2017, the Company was notified by the Internal Revenue Service, or IRS, that it has selected our federal tax return for fiscal 2016 for examination. In September 2017, the Company was notified by German tax authorities that our ECP subsidiary in Germany will be audited for the year ended December 31, 2014 and the three months ended March 31, 2015. All tax years remain subject to examination by the IRS and state tax authorities, because the Company has net operating loss and tax credit carryforwards which may be utilized in future years to offset taxable income, those years may also be subject to review by relevant taxing authorities if the carryforwards are utilized.

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Note 10. Commitments and Contingencies

Commitments

Leases

The Company’s corporate headquarters is located in Danvers, Massachusetts. This facility encompasses most of the Company’s U.S. operations, including research and development, manufacturing, sales and marketing and general and administrative departments. In August 2016, the Company entered into a new lease agreement to expand its existing corporate headquarters which includes 163,560 square feet of space. The initial term of the lease agreement commenced on August 12, 2016 and terminates on August 31, 2026. In September 2017, the Company exercised its option to buy the corporate headquarters, including land and improvements, pursuant to the terms of the existing lease agreement. The Company entered into a purchase and sale agreement with the landlord and acquired the Company’s headquarters for approximately $16.5 million on October 30, 2017.

The Danvers, Massachusetts building lease is being recorded as a capital lease.  The payments under the lease are accounted for as interest and principal payments over 15 years.  

A summary of future lease commitments related to the capital lease obligation is as follows:

	Capital Lease
	(in $000s)
Fiscal 2018, remaining portion	$	675
Fiscal 2019		1,349
Fiscal 2020		1,349
Fiscal 2021		1,373
Fiscal 2022		1,390
Thereafter		13,747
Total minimum lease payments		19,883
Less amounts representing interest		(3,922	)
Total capital lease obligation	$	15,961
Less current capital lease obligation		(851	)
Capital lease obligation, net of current portion	$	15,110

In February 2017, the Company entered into a lease agreement for additional office space in Danvers, Massachusetts, which expires in July 2022. The annual rent expense for the lease is estimated to be $0.2 million.

In September 2016, the Company entered into a lease agreement in Berlin, Germany which commenced in May 2017 and expires in May 2024. The annual rent expense for the lease is estimated to be $0.3 million.

The Company also entered into a lease agreement in October 2016 through September 2021 for an office in Tokyo, Japan which houses administrative, regulatory and training personnel in connection with the Company’s commercial launch in Japan. The annual rent expense for the lease is estimated to be $0.9 million.

Contingencies

From time to time, the Company is involved in legal and administrative proceedings and claims of various types. In some actions, the claimants seek damages, as well as other relief, which, if granted, would require significant expenditures. The Company records a liability in its consolidated financial statements for these matters when a loss is known or considered probable and the amount can be reasonably estimated. The Company reviews these estimates each accounting period as additional information is known and adjusts the loss provision when appropriate. If a matter is both probable to result in liability and the amount of loss can be reasonably estimated, the Company estimates and discloses the possible loss or range of loss. If the loss is not probable or cannot be reasonably estimated, a liability is not recorded in its consolidated financial statements.

In April 2014, the Company received an administrative subpoena from the Boston regional office of the United States Department of Health and Human Services, or HHS, Office of Inspector General requesting materials relating to the Company’s reimbursement of employee expenses and remuneration to healthcare providers from July 2012 through December 2012, in

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connection with a civil investigation under the False Claims Act (the “FCA Investigation”). Subsequently, the Company received Civil Investigative Demands from the U.S. Attorney’s Office for the District of Massachusetts that collectively sought additional information relating to this matter for the time period of January 1, 2011 through September 14, 2016. The Company continues to cooperate with the government in this investigation and is exploring ways to resolve this matter with the government. The Company is not able to predict what action, if any, might be taken in the future as a result of the investigation, or the potential impact on its financial position.

Thoratec Corporation, or Thoratec, a subsidiary of Abbott Laboratories, has challenged a number of Company owned patents in Europe in connection with the launch of their HeartMate PHP medical device, or PHP, in Europe. These actions relate to Thoratec’s ability to manufacture and sell their PHP product in Europe. These actions do not relate to the Company’s ability to manufacture or sell its Impella line of devices.

In December 2014, Thoratec filed a nullity suit in the German Federal Patent Court against a German “pigtail” patent owned by the Company with a flexible extension feature, and auxiliary pigtail, basket and funnel features. The validity hearing was held in November 2016 and the Federal Patent Court found the patent invalid. The Company is appealing this decision.

In August 2015, Thoratec filed a nullity action in the German Federal Patent Court against two Company owned patents covering a “magnetic clutch” feature. These magnetic clutch patents were acquired by the Company in July 2014, in connection with its acquisition of ECP and AIS. The validity hearing for the magnetic clutch patents was held in June 2017. The Company’s patents were upheld in an amended form to focus on the structure and interaction of the magnets in the clutch. The Federal Patent Court found certain unamended claims invalid.  The Company is appealing the decision with respect to the unamended claims.

In September 2015, the Company filed counterclaims in the magnetic clutch action in Germany asserting that the PHP product infringes the two magnetic clutch patents, a European pigtail patent, and the German pigtail patent. The infringement trial has been stayed, pending resolution of the German nullity actions.  

In February 2017, Thoratec filed an opposition in the European Patent Office against a Company patent acquired from ECP and AIS relating to a housing structure for an expandable pump. The Company filed an initial response to the opposition in July 2017.

In December 2015, the Company received a letter from Maquet Cardiovascular LLC, or Maquet, a subsidiary of the Getinge Group, asserting that the Company’s Impella devices infringe certain claims having guidewire, lumen and sensor features, which were in two Maquet patents and one pending patent application in the U.S. and elsewhere, and attached a draft litigation complaint and encouraged the Company to take a license from Maquet.  In January 2016, the Company responded to Maquet stating that it believed that the cited claims were invalid and that its Impella devices did not infringe the cited patents.  In May 2016, Maquet sent an additional letter notifying the Company that its pending U.S. patent application had been issued as a U.S. patent, repeated their earlier assertion and encouraged the Company to discuss taking a license from Maquet. The three patents expire September 2020, December 2020 and October 2021. In May 2016, the Company filed suit in U.S. District Court for the District of Massachusetts, or D. Mass., against Maquet seeking a declaratory judgment that the Company’s Impella devices do not infringe Maquet’s cited patent rights.  

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In August 2016, Maquet sent another letter to the Company identifying four new U.S. continuation patent filings with claims that Maquet alleges are infringed by the Company’s Impella devices. Of the four U.S. continuation applications, one issued as a patent on January 17, 2017, one issued as a patent on February 7, 2017, one issued as a patent on March 21, 2017, and one issued as a patent on October 17, 2017.  These four issued patents will expire in September 2020.

In September 2016, Maquet filed a response to the Company’s suit in D. Mass., including various counterclaims alleging that the Company’s Impella 2.5, Impella CP, Impella 5.0, and Impella RP heart pumps infringe certain claims of the three original issued U.S. patents. On June 15, 2017, Maquet filed a motion for leave to amend its infringement counterclaims to add the three additional U.S. continuation patents mentioned above and to file various false advertising, unfair competition claims under state law and under the Lanham Act, and a trademark cancellation in the pending case.  Maquet’s amended complaint and counterclaim, like those it originally filed, seek injunctive relief and monetary damages in the form of a reasonable royalty, with three times the amount for alleged willful infringement. The amended complaint admits that Maquet’s currently commercially available products do not embody the claims of the asserted patents. On July 21, 2017, the Court granted the motion in part, allowing the three additional continuation patents to be added to the case, and denied the motion to add the false advertising, Lanham Act claims, and the trademark cancellation claims.  On October 26, 2017, Maquet filed an answer and counterclaims to Abiomed’s first amended complaint, including a counterclaim that the Company’s Impella 2.5, Impella CP, and Impella 5.0 heart pumps infringe certain claims of the seventh patent issued on October 17, 2017.  The Company believes that this counterclaim requires permission from the Court and will brief the Court on this issue.  

With regard to the first six Maquet patents mentioned above, in March and April 2017 the Company filed requests for inter partes review, or IPR, at the U.S. Patent & Trademark Office’s Patent Trial and Appeals Board, or PTAB, asserting that the claims are invalid in view of prior art blood pump technology. In September and October 2017, the PTAB denied institution on these IPR requests filed by the Company.  In September 2017, the Company filed additional IPRs and the institution decisions are expected in March 2018.  

The case is ongoing and we cannot estimate what the potential outcome of these claims will be at this time.  Discovery is ongoing and the hearing on claim interpretation is scheduled for March 2018.  

The Company is unable to estimate the potential liability with respect to the legal matters noted above. There are numerous factors that make it difficult to meaningfully estimate possible loss or range of loss at this stage of the legal proceedings, including that the FCA Investigation and patent disputes with Thoratec and Maquet remain either in relatively early stages, or there are significant factual and legal issues to be resolved and information obtained or rulings made during any lawsuits or investigations that could affect the methodology for calculation.

Note 11. Segment and Enterprise Wide Disclosures

The Company operates in one business segment—the research, development and sale of medical devices to assist or replace the pumping function of the failing heart. The Company’s chief operating decision maker (determined to be the Chief Executive Officer) does not manage any part of the Company separately, and the allocation of resources and assessment of performance are based on the Company’s consolidated operating results. International sales (sales outside the U.S. and primarily in Europe) accounted for 11% and 10% of total product revenue for each of the three and six months ended September 30, 2017, respectively, and 9% of total product revenue for each of the three and six months ended September 30, 2016, respectively. Most of the Company’s long-lived assets are located in the U.S. except for $28.9 million and $23.2 million at September 30, 2017 and March 31, 2017, respectively, which are located primarily in Germany.

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ITEM 2: MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Forward Looking Statements

This Report contains forward- looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended and Section 21E of the Securities Exchange Act of 1934, as amended. Any statements other than one conveying solely historical facts is a forward-looking statement. These forward-looking statements may be accompanied by words such as “anticipate,” “believe,” “estimate,” “expect,” “forecast,” “intend,” “may,” “plan,” “potential,” “project,” “target,” “will” and other words and terms of similar meaning. These forward-looking statements address various matters including, among others, future actions related to ongoing investigations and litigation and expenditures related thereto; the development and commercialization of new and existing products and anticipated costs, including research and development, sales and marketing and training costs associated with product development and commercialization; expected capital expenditures for the fiscal year ending March 31, 2018; commercial plans for our products into new markets such as Japan; expected enrollment in our prospective feasibility study; demand and expected shipments of our products; anticipated shifts in the revenue mix associated with our products; our ability to increase revenue from our Impella® line of products and the sufficiency of revenue to fund future operations; the impact of market factors such as changes in interest rates, currency exchange rates on our securities and the fair value of our financial instruments; awards of performance and market-based restricted stock units; and the impact of ASU 2016-09 on our consolidated financial statements and disclosures. Each forward-looking statement in this Report is subject to risks and uncertainties that could cause actual results to differ materially from those expressed or implied by such statement. Applicable risks and uncertainties include, among others, our inability to predict the outcome of investigations and litigation and associated expenses; possible delays in our research and development programs; our ability to obtain regulatory approvals and market our products, and uncertainties related to regulatory processes; greater government scrutiny and regulation of the medical device industry and our ability to respond to changing laws and regulations affecting our industry, including any reforms to the regulatory approval process administered by the U.S Food and Drug Administration, or FDA, and changing enforcement practices related thereto; the inability to manufacture products in commercial quantities at an acceptable cost; the acceptance by physicians and hospitals of our products; the impact of competitive products and pricing; uncertainties associated with future capital needs and the risks identified under Item 1A of Part I of our Annual Report on Form 10-K, for the year ended March 31, 2017, as well as the other information we file with the Securities and Exchange Commission. Readers are cautioned not to place considerable reliance on any forward-looking statements contained in this Report, which speak only as of the date of this Report. We undertake no obligation to update or revise these forward-looking statements whether as a result of new information, future events or otherwise, unless required by law. Our business is subject to substantial risks and uncertainties, including those referenced above. Investors, potential investors, and others should give careful consideration to these risks and uncertainties.

Overview

We are a leading provider of temporary mechanical circulatory support devices, and we offer a continuum of care to heart failure patients. We develop, manufacture and market proprietary products that are designed to enable the heart to rest, heal and recover by improving blood flow to the coronary arteries and end-organs and/or temporarily assisting the pumping function of the heart. Our products are used in the cardiac catheterization lab, or cath lab, by interventional cardiologists, the electrophysiology lab, the hybrid lab and in the heart surgery suite by heart surgeons. A physician may use our devices for patients who are in need of hemodynamic support prophylactically, urgently or emergently before, during or after angioplasty or heart surgery procedures. We believe that heart recovery is the optimal clinical outcome for a patient experiencing heart failure because it enhances the potential for the patient to go home with the patient’s own native heart, facilitating the restoration of quality of life. In addition, we believe, that for the care of such patients, heart recovery is often the most cost-effective solution for the healthcare system.

Our strategic focus and the driver of the majority of our revenue growth is the market penetration of our family of Impella® heart pumps. The Impella device portfolio, which includes the Impella 2.5® Impella CP®, Impella RP®, Impella LD® and Impella 5.0® devices, has supported numerous patients worldwide. We expect that all of our product and service revenue in the near future will be from our Impella devices. Revenues from our non-Impella devices, largely focused on the AB5000 device used in the heart surgery suite, have been decreasing over the past several years and we are no longer selling the AB5000 as we have strategically shifted our sales and marketing efforts towards our Impella devices and the cath lab.

In March 2015, we received a Pre-Market Approval, or PMA, from the FDA for use of the Impella 2.5 device during elective and urgent high-risk percutaneous coronary intervention, or PCI, procedures. In December 2016, the FDA expanded this PMA approval in the U.S. to include the Impella CP device. With these PMA indications, the Impella 2.5 and Impella CP devices provide the only minimally invasive treatment options indicated for use during high-risk PCI procedures in the U.S. In April 2016, the FDA approved a PMA supplement for our Impella 2.5, Impella CP, Impella 5.0 and Impella LD devices to provide treatment for ongoing cardiogenic shock that occurs following a heart attack or open heart surgery. The intent of the Impella system therapy is to reduce ventricular work and to provide the circulatory support necessary to allow heart recovery and early assessment of residual myocardial function.

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In September 2017, we received a PMA from the FDA for the Impella RP® heart pump. This latest approval follows the prior FDA Humanitarian Device Exemption (HDE) received in January 2015 and adds the Impella RP heart pump to our platform of PMA approved devices. The Impella RP heart pump is indicated for providing temporary right ventricular support for up to 14 days in patients with a body surface area ≥1.5 m², who develop acute right heart failure or decompensation following left ventricular assist device implantation, myocardial infarction, heart transplant, or open-heart surgery. With this approval, the Impella RP heart pump is the only percutaneous temporary ventricular support device that is FDA-approved as safe and effective for right heart failure as stated in the indication.

Our Impella 2.5, Impella 5.0, Impella LD, Impella CP and Impella RP devices also have CE Mark approval and Health Canada approval, which allows us to market these devices in the European Union and Canada.

In September 2016, we received Pharmaceuticals and Medical Devices Agency, or PMDA, approval from the Japanese Ministry of Health, Labour & Welfare, or MHLW, for our Impella 2.5 and Impella 5.0 heart pumps to provide treatment of drug-resistant acute heart failure in Japan. In July 2017, we received approval from the MHLW for reimbursement for the Impella 2.5 and 5.0 heart pumps. Reimbursement in Japan for the Impella 2.5 and 5.0 is equivalent to our average Impella sales price in the U.S. and we commenced commercialization in Japan during the three months ended September 30, 2017. The first Japanese patient was treated with the Impella device in October 2017 and we anticipate a controlled Impella device launch at a limited number of hospitals by the end of fiscal 2018. We do not expect to have any material revenue in Japan during fiscal 2018.

In May 2017, we announced the enrollment of the first patient in the FDA approved prospective multi-center feasibility study, STEMI Door to Unloading with Impella CP system in acute myocardial infarction. The trial focuses on the feasibility and safety of unloading the left ventricle using the Impella CP heart pump prior to primary PCI in patients presenting with ST segment elevation myocardial infarction, or STEMI, without cardiogenic shock with the hypothesis that this will potentially reduce infarct size. The study, which received FDA approval in October 2016, will enroll up to 50 patients at 10 sites. We expect to complete enrollment in fiscal 2019.

We expect to continue to make additional PMA supplement submissions for our Impella portfolio of devices for additional indications.

Our Products

Impella 2.5®

The Impella 2.5 device is a percutaneous micro heart pump with an integrated motor and sensors. The device is designed primarily for use by interventional cardiologists to support patients in the cath lab who may require assistance to maintain circulation. The Impella 2.5 heart pump can be quickly inserted via the femoral artery to reach the left ventricle of the heart where it is directly deployed to draw blood out of the ventricle and deliver it to the circulatory system. This function is intended to reduce ventricular work and provide blood flow to vital organs. The Impella 2.5 heart pump is introduced with normal interventional cardiology procedures and can pump up to 2.5 liters of blood per minute.

The Impella 2.5 device received 510(k) clearance from the FDA in June 2008 for partial circulatory support for up to six hours. In March 2015, we received a PMA from the FDA for the use of the Impella 2.5 device during elective and urgent high-risk PCI procedures. With this PMA indication, the Impella 2.5 device became the first FDA approved hemodynamic support device for use during high-risk PCI procedures. Under this first PMA, the Impella 2.5 is a temporary (up to six hours) ventricular support device indicated for use during high-risk PCI performed in elective or urgent hemodynamically stable patients with severe coronary artery disease and depressed left ventricular ejection fraction, when a heart team, including a cardiac surgeon, that has determined high-risk PCI is the appropriate therapeutic option. Use of the Impella 2.5 device in these patients may prevent hemodynamic instability that may occur during planned temporary coronary occlusions and may reduce periprocedural and post-procedural adverse events. The product labeling allows for the clinical decision by physicians to leave the Impella 2.5 device in place beyond the intended duration of up to six hours should unforeseen circumstances arise.

In April 2016, the FDA approved a supplement to our March 2015 PMA approval for the use of our Impella 2.5, Impella CP, Impella 5.0 and Impella LD devices to provide treatment for ongoing cardiogenic shock. This PMA supplement covers a set of indications related to the use of the Impella devices in patients suffering cardiogenic shock following acute myocardial infarction or cardiac surgery and allows for a longer duration of support.

Pursuant to the April 2016 PMA approval, the Impella 2.5, Impella CP, Impella 5.0 and Impella LD catheters, in conjunction with the Automated Impella Controller, or AIC, were approved as temporary ventricular support devices intended for short term use (≤ 4 days for the Impella 2.5 and Impella CP, and ≤ 6 days for the Impella 5.0 and LD) and indicated for the treatment of ongoing

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cardiogenic shock that occurs immediately (< 48 hours) following acute myocardial infarction or open heart surgery as a result of isolated left ventricular failure that is not responsive to optimal medical management and conventional treatment measures. The intent of the Impella system therapy is to reduce ventricular work and to provide the circulatory support necessary to allow heart recovery and early assessment of residual myocardial function.  Optimal medical management and convention treatment measures include volume loading and use of pressors and inotropes, with or without an intraortic balloon pump, or IABP.

The Impella 2.5 device has CE Mark approval in Europe for up to five days of use and is approved for use in up to 40 countries. The Impella 2.5 device also has Health Canada approval which allows us to market the device in Canada.

In September 2016, we received PMDA approval from the Japanese MHLW for our Impella 2.5 and Impella 5.0 heart pumps to provide treatment of drug-resistant acute heart failure in Japan. In July 2017, we received approval from the MHLW for reimbursement for the Impella 2.5 and 5.0 heart pumps. Reimbursement in Japan for the Impella 2.5 and 5.0 is equivalent to our average Impella sales price in the U.S. and we commenced commercialization in Japan during the three months ended September 30, 2017. The first Japanese patient was treated with the Impella device in October 2017 and we anticipate a controlled Impella device launch at a limited number of hospitals by the end of fiscal 2018. We do not expect to have any material revenue in Japan during fiscal 2018.

We expect to continue to make additional PMA supplement submissions for our Impella devices for additional clinical indications.  

Impella CP®

In September 2012, we announced that the Impella CP device received 510(k) clearance from the FDA. The Impella CP device provides blood flow of approximately one liter more per minute than the Impella 2.5 device and is primarily used by either interventional cardiologists to support patients in the cath lab or by cardiac surgeons in the heart surgery suite.

In April 2016, the FDA approved the PMA supplement for certain of our devices, including our Impella CP device to provide treatment for ongoing cardiogenic shock.

In December 2016, we received PMA approval from the FDA for the use of the Impella CP device during elective and urgent high-risk PCI procedures, identical to the indication for use for the Impella 2.5 device.  This approval allows the Impella CP to be used as a temporary (≤ 6 hours) ventricular support system indicated for use during high risk PCI procedures performed in elective or urgent hemodynamically stable patients with severe coronary artery disease and depressed left ventricular ejection fraction, when a heart team, including a cardiac surgeon, has determined that high risk PCI is the appropriate therapeutic option. The product labeling allows for the clinical decision by physicians to leave the Impella CP device in place beyond the intended duration of up to six hours should unforeseen circumstances arise.

In May 2017, we announced the enrollment of the first patient in the FDA approved prospective multi-center feasibility study, STEMI Door to Unloading with Impella CP system in acute myocardial infarction. The trial focuses on the feasibility and safety of unloading the left ventricle using the Impella CP heart pump prior to primary PCI in patients presenting with ST segment elevation myocardial infarction, or STEMI, without cardiogenic shock with the hypothesis that this will potentially reduce infarct size. The study, which received FDA approval in October 2016, will enroll up to 50 patients at 10 sites. We expect to complete enrollment in fiscal 2019.

The primary endpoints of the feasibility study will focus on safety, including Adverse Cardiovascular and Cerebrovascular Events, or MACCE, at 30 days. All patients will undergo cardiac magnetic resonance imaging to assess infarct size as a percent of left ventricular mass at 30 days post-PCI. Patients will be randomized to Impella CP placement with immediate primary PCI, or to Impella CP placement with 30 minutes of unloading prior to primary PCI. The hypothesis of this novel approach to treating STEMI patients, based on extensive mechanistic research, is that unloading the left ventricle prior to PCI reduces myocardial work load, oxygen demand and also initiates a cardio-protective effect at the myocardial cell level, which may alleviate myocardial damage caused by reperfusion injury at the time of revascularization. This feasibility study will help refine the protocol and lay the groundwork for a future pivotal study with more sites and patients and will be designed for statistical significance.

We expect to continue to make additional PMA supplement submissions for our Impella devices for additional clinical indications.  

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The Impella CP device has CE Mark approval in Europe for up to five days of use and is approved for use in up to 40 countries.

Impella 5.0® and Impella LD®

The Impella 5.0 and Impella LD devices are percutaneous micro heart pumps with integrated motors and sensors for use primarily in the heart surgery suite. These devices are designed to support patients who require higher levels of circulatory support as compared to the Impella 2.5.

The Impella 5.0 device can be inserted into the left ventricle via femoral cut down or through the axillary artery. The Impella 5.0 device is passed into the ascending aorta, across the valve and into the left ventricle. The Impella LD device is similar to the Impella 5.0 device, but it is implanted directly into the ascending aorta through an aortic graft.  Both of these procedures are normally performed with the assistance of heart surgeons in the surgery suite. The Impella 5.0 and Impella LD devices can pump up to five liters of blood per minute, potentially providing full circulatory support.

The Impella 5.0 and Impella LD devices originally received 510(k) clearance in April 2009, for circulatory support for up to six hours.  In April 2016, the FDA approved the PMA supplement for certain of our devices, including the Impella 5.0 and Impella LD devices to provide treatment for ongoing cardiogenic shock following a heart attack or open heart surgery.

The Impella 5.0 and Impella LD devices have CE Mark approval in Europe for up to ten days’ duration and are approved for use in over 40 countries.

In July 2017, we received approval from the MHLW for reimbursement for the Impella 2.5 and 5.0 heart pumps. Reimbursement in Japan for the Impella 2.5 and 5.0 is equivalent to our average Impella sales price in the U.S. and we commenced commercialization in Japan during the three months ended September 30, 2017. The first Japanese patient was treated with the Impella device in October 2017 and we anticipate a controlled Impella launch at a limited number of hospitals by the end of fiscal 2018. We do not expect to have any material revenue in Japan during fiscal 2018.

Impella RP®

The Impella RP is a percutaneous catheter-based axial flow pump that is designed to allow greater than four liters of blood flow per minute and is intended to provide the flow and pressure needed to compensate for right side heart failure. The Impella RP is the first percutaneous single access heart pump designed for right heart support to receive FDA approval. The Impella RP device is approved to provide support of the right heart during times of acute failure for certain patients who have received a left ventricle assist device or have suffered heart failure due to acute myocardial infarction, or AMI, a failed heart transplant, or following open heart surgery.

In November 2012, the Impella RP device received U.S. investigational device exemption, or IDE, approval from the FDA for use in RECOVER RIGHT, a pivotal clinical study in the U.S. This was a study of 30 patients who presented signs of right side heart failure, required hemodynamic support, and were capable of being treated in the catheterization lab or cardiac surgery suite. The study was completed in March 2014 and collected safety and effectiveness data on the percutaneous use of the Impella RP device and was submitted to the FDA in support of an HDE submission. An HDE is similar to a PMA application but is intended for patient populations of 8,000 or less per year in the U.S. and is subject to certain profit and use restrictions. An HDE approval requires demonstration of the safety and probable benefit of the product, which is a lower standard than is applied to a PMA. In order to receive an HDE, there must be no comparable devices approved under a PMA that are available to treat the targeted population. An approved HDE authorizes sales of the device to any hospital after review and approval by the hospital’s Institutional Review Board. In January 2015, we received HDE approval for the Impella RP device from the FDA.

In September 2017, we received a PMA from the FDA for the Impella RP heart pump. This latest approval follows the prior FDA HDE received in January 2015 and adds the Impella RP heart pump to our platform of PMA approved devices. The Impella RP heart pump is indicated for providing temporary right ventricular support for up to 14 days in patients with a body surface area ≥1.5 m², who develop acute right heart failure or decompensation following left ventricular assist device implantation, myocardial infarction, heart transplant, or open-heart surgery. With this approval, the Impella RP heart pump is the only percutaneous temporary ventricular support device that is FDA-approved as safe and effective for right heart failure as stated in the indication.

In April 2014, the Impella RP device received CE Mark approval which allows for commercial sales of the Impella RP device in the European Union and other countries that require a CE Mark approval for commercial sales.

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ECP

In July 2014, we acquired all of the issued shares of ECP Entwicklungsgesellschaft mbH, or ECP, a German limited liability company, for $13.0 million in cash, with additional potential payments up to a maximum of $15.0 million based on the achievement of certain technical, regulatory and commercial milestones. In connection with our acquisition of ECP, ECP acquired all of the issued shares of AIS GmbH Aachen Innovative Solutions, or AIS, a German limited liability company, for $2.8 million in cash which was provided by us. AIS, based in Aachen, Germany, holds certain intellectual property useful to ECP’s business, and, prior to being acquired by ECP, had licensed such intellectual property to ECP.

ECP, based in Berlin, Germany, is engaged in research, development, prototyping and the pre-serial production of a percutaneous expandable catheter pump which increases blood circulation from the heart with an external drive shaft. The ECP pump is designed for blood flow of >3 liters/minute. It is intended to be delivered on the standard Impella 9 Fr catheter and will include an 18 Fr expandable inflow in the left ventricle with a smooth membrane crossing the left ventricle. The ECP pump is still in early stages of research and development and has not been approved for commercial use or sale.

Critical Accounting Policies and Estimates

There have been no significant changes in our critical accounting policies during the three and six months ended September 30, 2017, as compared to the critical accounting policies disclosed in Management’s Discussion and Analysis of Financial Condition and Results of Operations included in our Annual Report on Form 10-K for the fiscal year ended March 31, 2017.

Recent Accounting Pronouncements

Information regarding recent accounting pronouncements is included in “Note 2. Basis of Preparation and Summary of Significant Accounting Policies” to our condensed consolidated financial statements and is incorporated herein by reference.

Results of Operations

The following table sets forth certain condensed consolidated statements of operations data for the periods indicated as a percentage of total revenue:

	For the Three Months Ended September 30,						For the Six Months Ended September 30,
	2017			2016			2017			2016
Revenue:
Product revenue		100.0	%		100.0	%		100.0	%		100.0	%
Costs and expenses as a percentage of total revenue:
Cost of product revenue		16.3			16.8			16.4			15.7
Research and development		14.6			17.5			13.7			16.4
Selling, general and administrative		45.2			51.6			45.5			50.5
Total costs and expenses		76.1			85.9			75.6			82.6
Income from operations		23.9			14.1			24.4			17.4
Income tax (benefit) provision and other		5.4			5.5			1.1			6.8
Net income as a percentage of total revenue		18.5	%		8.6	%		23.3	%		10.6	%

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Three and six months ended September 30, 2017 compared with the three and six months ended September 30, 2016

Revenue

Our revenues are comprised of the following:

	For the Three Months Ended September 30,				For the Six Months Ended September 30,
		2017		2016		2017		2016
	(in $000's)				(in $000's)
Impella product revenue	$	127,400	$	97,915	$	254,594	$	195,734
Service and other revenue		5,382		4,455		10,620		8,944
Other products		-		558		-		1,239
Total product revenue		132,782		102,928		265,214		205,917
Funded research and development		41		27		77		33
Total revenue	$	132,823	$	102,955	$	265,291	$	205,950

Impella product revenue encompasses Impella 2.5, Impella CP, Impella 5.0, Impella LD and Impella RP device sales. Service and other revenue represents revenue earned on service maintenance contracts and preventive maintenance calls. Other product revenue includes AB5000 and product accessory revenue.

Total revenue for the three months ended September 30, 2017 increased $29.8 million, or 29%, to $132.8 million from $103.0 million for three months ended September 30, 2016. Total revenue for the six months ended September 30, 2017 increased $59.3 million, or 29%, to $265.3 million from $206.0 million for six months ended September 30, 2016. The increase in total revenue was primarily due to higher Impella product revenue from increased utilization in the U.S and Europe.

Impella product revenue for the three months ended September 30, 2017 increased by $29.5 million, or 30%, to $127.4 million from $97.9 million for three months ended September 30, 2016. Impella product revenue for the six months ended September 30, 2017 increased by $58.9 million, or 30%, to $254.6 million from $195.7 million for the six months ended September 30, 2016. Most of the increase in Impella product revenue was from increased device sales in the U.S., as we focus on increasing utilization of our disposable catheter products through continued investment in our field organization and physician training programs. Impella product revenue outside of the U.S. also increased primarily due to increased utilization in Germany as we expand our field organization there. We expect product revenue from our Impella product line to continue to increase due to our recent PMAs in the U.S. for our Impella devices, including the PMA approval on the Impella RP device received in September 2017, continued utilization for high risk PCI procedures and ongoing cardiogenic shock, launching our Impella business in Japan on a controlled basis, and expansion efforts in Europe, particularly Germany.

Service and other revenue for the three months ended September 30, 2017 increased by $0.9 million, or 20%, to $5.4 million from $4.5 million for three months ended September 30, 2016. Service and other revenue for the six months ended September 30, 2017 increased by $1.7 million, or 19%, to $10.6 million from $8.9 million for the six months ended September 30, 2016. The increase in service revenue was primarily due to an increase in preventative maintenance service contracts. We have expanded the number of Impella AIC consoles to most of our using sites and placed more consoles at existing higher using sites. We expect revenue growth for service revenue to be slower than our product revenue growth in the near future as most of these using sites in the U.S. have service contracts that normally have three year terms.

The decrease in other revenue was due to a decline in AB5000 disposable sales. We are no longer selling the AB5000 revenue device and we do not expect to have any other product revenue in the near future. We have transitioned our sales focus in the surgical suite from the AB5000 to Impella 5.0, Impella LD and Impella RP devices.

Costs and Expenses

Cost of Product Revenue

Cost of product revenue for the three months ended September 30, 2017 increased by $4.3 million, or 25%, to $21.6 million from $17.3 million for the three months ended September 30, 2016. Gross margin was 84% for the three months ended September 30, 2017 and 83% for the three months ended September 30, 2016.

Cost of product revenue for the six months ended September 30, 2017 increased by $11.1 million, or 34%, to $43.5 million from $32.4 million for the six months ended September 30, 2016. Gross margin was 84% for each of the six months ended September 30, 2017 and 2016, respectively.

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The increase in cost of product revenue was related to higher demand for our Impella devices and higher production volume and costs to support growing demand for our Impella devices. The increase in gross margin for the three months ended September 30, 2017 was due to the shipment of fewer Impella AIC consoles during the quarter.

Research and Development Expenses

Research and development expenses for three months ended September 30, 2017 increased by $1.3 million, or 7%, to $19.4 million from $18.1 million for three months ended September 30, 2016. Research and development expenses for the six months ended September 30, 2017 increased $2.6 million, or 8%, to $36.3 million from $33.7 million for the six months ended September 30, 2016. The increase in research and development expenses was primarily due to product development initiatives on our existing products and new technologies as we expanded our engineering organization, increased clinical spending primarily related to our STEMI trial and continued our focus on quality initiatives for our Impella devices.

We expect research and development expenses to increase for the remainder of fiscal 2018 as we continue to increase clinical spending related to our cVAD Registry™, STEMI trial and incur additional costs as we continue to focus on engineering initiatives to improve our existing products and develop new technologies, such as ECP.

Selling, General and Administrative Expenses

Selling, general and administrative expenses for three months ended September 30, 2017 increased by $7.0 million, or 13%, to $60.1 million from $53.1 million for three months ended September 30, 2016. Selling, general and administrative expenses for the six months ended September 30, 2017 increased by $16.6 million, or 16%, to $120.7 million from $104.1 million for the six months ended September 30, 2016. The increase in selling, general and administrative expenses was primarily due to the hiring of additional field sales and clinical personnel in the U.S. and Germany, increased spending on marketing initiatives as we continue to educate physicians on the benefits of hemodynamic support after receiving PMAs in the U.S. for Impella 2.5, Impella CP, Impella 5.0, Impella LD and Impella RP devices, higher stock-based compensation expense, higher legal expenses related to the FCA Investigation, ongoing patent litigation and other legal matters discussed in “Note 10. Commitments and Contingencies—Litigation,” to our condensed consolidated financial statements and higher professional fees to support the growth of our business.  

We expect to continue to increase our expenditures on sales and marketing activities, with particular investments in field sales and clinical personnel with cath lab expertise to drive recovery awareness for acute heart failure patients. We also plan to increase our marketing, service and training investments as a result of recent PMA approvals in the U.S. for our Impella devices and as we expand to new markets outside of the U.S., such as Japan. We also expect to continue to incur significant legal expenses for the foreseeable future related to the FCA Investigation and patent related matters.  Our selling, general and administrative expense could also increase in the fourth quarter of fiscal 2018 with the potential return of the medical device tax in the U.S. in January 2018, which was temporarily halted in January 2016.

Income Tax Provision

We recorded an income tax provision of $8.0 million and $4.4 million for the three and six months ended September 30, 2017, respectively, compared to $5.9 million and $14.4 for the three and six months ended September 30, 2016, respectively. The change in the income tax provision was due to an increase in income before income taxes and offset by excess tax benefits on restricted stock units and stock options, described below.

As discussed further in “Note 2. Basis of Presentation and Summary of Significant Accounting Policies,” to our condensed consolidated financial statements, we adopted ASU 2016-09 in the first quarter of fiscal 2018. ASU 2016-09 requires excess tax benefits and shortfalls to be recognized in the income tax provision as discrete items in the period when restricted stock units vest or stock option exercises occur, whereas previously such income tax effects were recorded as part of additional paid-in capital only when the related tax deduction resulted in a reduction of current income taxes payable. As a result, on April 1, 2017, we recorded a cumulative-effect adjustment to increase retained earnings by $76.4 million for excess tax benefits not previously recognized. The adoption of ASU 2016-09 also resulted in excess tax benefits associated with stock-based awards of $4.5 million and $21.3 million being recognized as an income tax benefit for three and six months ended September 30, 2017. The amount of future excess tax benefits or shortfalls will likely fluctuate from period to period based on the price of our stock, the volume of restricted stock units vesting or stock option exercises, and the fair value assigned to such stock-based awards under U.S. GAAP. Accordingly, we expect that the adoption of ASU 2016-09 will result in more volatility to its effective income tax rate, net income and earnings per share in future periods.

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Net Income

For the three months ended September 30, 2017, net income was $24.5 million, or $0.56 per basic share and $0.54 per diluted share, compared to $8.9 million, or $0.21 per basic share and $0.20 per diluted share for three months ended September 30, 2016. For the six months ended September 30, 2017, net income was $61.9 million, or $1.41 per basic share and $1.36 per diluted share, compared to $21.8 million, or $0.51 per basic share and $0.49 per diluted share for the six months ended September 30, 2016. As discussed above, the adoption of ASU 2016-09 resulted in an increase in net income of $0.10 per basic and diluted share for the three months ended September 30, 2017 and $0.48 per basic share and $0.47 per diluted share for the six months ended September 30, 2017. The amount of future excess tax benefits or shortfalls will likely fluctuate from period to period based on the price of our stock, the volume of restricted stock units vesting or stock option exercises, and the fair value assigned to such stock-based awards under U.S. GAAP. Accordingly, we expect that the adoption of ASU 2016-09 will result in more volatility to our effective income tax rate, net income and earnings per share in future periods.

Our increased net income for fiscal 2018 was also driven by higher Impella product revenue due to greater utilization of our Impella devices in the U.S. and Germany.

Liquidity and Capital Resources

At September 30, 2017, our total cash, cash equivalents and marketable securities totaled $319.2 million, an increase of $42.1 million compared to $277.1 million at March 31, 2017. The increase in our cash, cash equivalents and marketable securities was due primarily to positive cash flows from operations in the six months ended September 30, 2017.

Following is a summary of our cash flow activities:

	For the Six Months Ended September 30,
	2017			2016
Net cash provided by operating activities	$	79,451		$	43,736
Net cash used for investing activities		(60,593	)		(28,003	)
Net cash used for financing activities		(13,294	)		(9,527	)
Effect of exchange rate changes on cash		(68	)		272
Net increase in cash and cash equivalents	$	5,496		$	6,478

Cash Provided by Operating Activities

For the six months ended September 30, 2017, cash provided by operating activities consisted of net income of $61.9 million, adjustments for non-cash items of $29.5 million and cash used in working capital of $11.9 million. The increase in net income was primarily due to higher revenue from increased utilization of our Impella devices. Adjustments for non-cash items consisted primarily of $17.9 million of stock-based compensation expense, a $3.1 million change in deferred tax provision, $5.3 million of depreciation expense on property and equipment and $2.5 million in inventory and other asset write-downs. The change in cash from working capital included a $2.8 million increase in accounts receivable due to higher revenue, $5.4 million increase in inventory to support growing demand for our Impella devices, and a $2.9 million decrease in accounts payable and accrued expenses due to payment of annual bonuses during the quarter ended June 30, 2017.

For the six months ended September 30, 2016, cash provided by operating activities consisted of net income of $21.8 million, adjustments for non-cash items of $28.7 million and cash used in working capital of $6.7 million. The increase in net income was primarily due to higher revenue from increased utilization of our Impella devices. Adjustments for non-cash items consisted primarily of $18.0 million of stock-based compensation expense, a $9.8 million change in deferred tax provision, $3.6 million in excess tax benefits on stock-based awards, $3.0 million of depreciation expense on property and equipment and $1.4 million in inventory and other asset write-downs. The change in cash from working capital included a $3.8 million increase in accounts receivable associated with our higher revenue, a $6.3 million increase in inventory as we build up our inventory safety stock to support growing demand for our Impella devices, $5.1 million increase in accounts payable and accrued expenses and a $0.3 million increase in deferred revenue primarily due to an increase in preventative maintenance service contracts.

Cash Used for Investing Activities

For the six months ended September 30, 2017, net cash used for investing activities primarily consisted of $36.5 million in purchases (net of maturities) of marketable securities and $17.7 million for the purchase of property and equipment mostly related to

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expansion of manufacturing capacity, office space and research and development facilities in Danvers, Massachusetts and Aachen, Germany.  We also made $6.4 million of investments in private medical technology companies during fiscal 2018.

For the six months ended September 30, 2016, net cash used for investing activities included $17.6 million in purchases (net of maturities) of marketable securities and $10.5 million for the purchase of property and equipment mostly related to expansion of manufacturing capacity and office space in Danvers, Massachusetts and Aachen, Germany. 

Capital expenditures for fiscal 2018 are estimated to range from $30 million to $50 million. This range excludes the purchase of our corporate headquarters in Danvers, Massachusetts for approximately $16.5 million on October 30, 2017. Most of the significant capital expenditures were for software development projects and expanding research facilities, manufacturing capacity and office leasehold improvements in our Danvers, Massachusetts, Aachen, Germany, Berlin, Germany and Tokyo, Japan locations.

Cash Provided by Financing Activities

For the six months ended September 30, 2017, net cash used for financing activities included $19.2 million in payments in lieu of issuance of common stock for payroll withholding taxes upon vesting of certain equity awards and $0.4 million in principal payments on capital lease obligation. These amounts were offset by $5.3 million in proceeds from the exercise of stock options, $1.1 million in proceeds from the issuance of stock under the employee stock purchase plan and $0.4 million in principal payments on the capital lease obligation.  

For the six months ended September 30, 2016, net cash used for financing activities included $19.6 million in payments in lieu of issuance of common stock for payroll withholding taxes upon vesting of certain equity awards.  These amounts were offset by $5.8 million in proceeds from the exercise of stock options, $3.6 million in excess tax benefits on stock-based awards and $0.8 million in proceeds from the issuance of stock under the employee stock purchase plan.  

Operating Capital and Liquidity Requirements

We believe that our revenue from product sales together with existing resources will be sufficient to fund our operations for at least the next twelve months, exclusive of activities involving any future acquisitions of products or companies that complement or augment our existing line of products.

Our primary liquidity requirements are to fund the expansion of our commercial and operational infrastructure, increase our manufacturing capacity, incur additional capital expenditures as we expand our office space and manufacturing capacity in Danvers and Aachen, increase our inventory levels in order to meet growing customer demand for our Impella devices, fund new product development initiatives, prepare for commercial launches of Impella devices in new markets in the future, such as Japan, increase clinical spending, legal expenses related to the FCA Investigation and ongoing patent litigation and to provide for general working capital needs. To date, we have primarily funded our operations through product sales and the sale of equity securities.

Our liquidity is influenced by our ability to sell our products in a competitive industry and our customers’ ability to pay for our products. Factors that may affect liquidity include our ability to penetrate the market for our products, maintain or reduce the length of the selling cycle for our products, capital expenditures, investments in collaborative arrangements with other partners, and our ability to collect cash from customers after our products are sold. We also expect to continue to incur legal expenses for the foreseeable future related to the FCA Investigation, ongoing patent litigation and other legal matters. We continue to review our short-term and long-term cash needs on a regular basis. At September 30, 2017 we had no long-term debt outstanding.

Marketable securities at September 30, 2017 and March 31, 2017 consisted of $274.6 million and $238.1 million held in funds that invest in U.S. Treasury, government-backed and corporate debt securities, respectively. We are not a party to any interest rate swaps, currency hedges or derivative contracts of any type and have no exposure to commercial paper or auction rate securities markets.

Cash and cash equivalents held by our foreign subsidiaries totaled $14.1 million and $8.2 million at September 30, 2017 and March 31, 2017, respectively. Our operating income outside the U.S. is deemed to be permanently reinvested in foreign jurisdictions. We do not intend or currently foresee a need to repatriate cash and cash equivalents held by our foreign subsidiaries. If these funds are needed in the U.S., we believe that the potential U.S. tax impact to repatriate these funds would not have a material impact on our financial condition.

29

ITEM 3: QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK

Primary Market Risk Exposures

Our cash, cash equivalents and marketable securities are subject to interest rate risk and will fall in value if market interest rates increase. If market interest rates were to increase immediately and uniformly by 10% from levels at September 30, 2017, we believe the decline in fair market value of our investment portfolio would be immaterial.

Currency Exchange Rates

We have foreign currency exposure to exchange rate fluctuations and particularly with respect to the euro, British pound sterling and Japanese yen. Therefore, our investment in our subsidiaries is sensitive to fluctuations in currency exchange rates. The effect of a change in currency exchange rates on our net investment in international subsidiaries is reflected in the accumulated other comprehensive (loss) income component of stockholders’ equity. If rates of exchange for the euro, British pound and Japanese yen were to have depreciated immediately and uniformly by 10% relative to the U.S. dollar from levels at September 30, 2017, the result would have been a reduction of stockholders’ equity of approximately $9.2 million.

Fair Value of Financial Instruments

At September 30, 2017, our financial instruments consist primarily of cash and cash equivalents, marketable securities, accounts receivable, accounts payable and contingent consideration. The carrying amounts of accounts receivable and accounts payable are considered reasonable estimates of their fair value, due to the short maturity of these instruments. The estimated fair values of the financial instruments have been determined by us using available market information and appropriate valuation techniques. Considerable judgment is required, however, to interpret market data to develop the estimates of fair value. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. The carrying value of our capital lease obligations approximates fair value based on the borrowing rates currently available to us for loans and capital leases with similar terms.

ITEM 4. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our principal executive officer and principal financial officer, has evaluated the effectiveness of our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934, as amended, or the Exchange Act), as of September 30, 2017. Based on this evaluation, our principal executive officer and principal financial officer concluded that, as of September 30, 2017, these disclosure controls and procedures are effective to provide reasonable assurance that material information required to be disclosed by us, including our consolidated subsidiaries, in reports that we file or submit under the Exchange Act, is recorded, processed, summarized and reported, within the time periods specified in the Securities and Exchange Commission rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure.

Evaluation of Changes in Internal Control over Financial Reporting

During the second quarter of our fiscal year ending March 31, 2018, there were no changes in our internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

30

PART II — OTHER INFORMATION

Item 1. Legal Proceedings

We are from time to time involved in various legal actions, the outcomes of which are not within our complete control and may not be known for prolonged periods of time. In some actions, the claimants seek damages, as well as other relief, which, if granted, would require significant expenditures. We record a liability in our condensed consolidated financial statements for these actions when a loss is known or considered probable and the amount can be reasonably estimated. We review these estimates each accounting period as additional information is known and adjust the loss provision when appropriate. If the loss is not probable or cannot be reasonably estimated, a liability is not recorded in the condensed consolidated financial statements. Material legal proceedings are discussed in “Note 10. Commitments and Contingencies—Litigation” to our condensed consolidated financial statements and are incorporated herein by reference.

Item 1A. Risk Factors

Investing in our common stock involves a high degree of risk. In addition to the other information set forth in this Report, you should carefully consider the factors discussed in Part I, “Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended March 31, 2017, which could materially affect our business, financial condition or future results. As of the date of this Report there has been no material change in any of the risk factors described in our Annual Report on Form 10-K for the fiscal year ended March 31, 2017, as supplemented by our Quarterly Report on Form 10-Q for the quarter ended June 30, 2017.

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

(a) Not applicable.

(b) Not applicable.

(c) Not applicable.

Item 3. Defaults Upon Senior Securities

None

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

None

31

Item 6. Exhibits

Exhibit No.	Description	Filed with This Form 10-Q	Incorporated by Reference
			Form	Filing Date	Exhibit No.
2.1	Agreement on the Sale and Transfer of all shares in ECP Entwicklungsgellschaft mbH		8-K	July 7, 2014 (File No. 001-09585)	2.1
2.2	Agreement on the Sale and Transfer of all shares in AIS GmbH Aachen Innovation Solutions		8-K	July 7, 2014 (File No. 001-09585)	2.2
3.1	Restated Certificate of Incorporation.		S-3	September 29, 1997	3.1
3.2	Restated By-Laws, as amended.		10-K	May 27, 2004 (File No. 001-09585)	3.2
3.3	Certificate of Designations of Series A Junior Participating Preferred Stock.		S-3	September 29, 1997	3.3
3.4	Amendment to the Company’s Restated Certificate of Incorporation to increase the authorized shares of common stock from 25,000,000 to 100,000,000.		8-K	March 21, 2007 (File No. 001-09585)	3.4
10.1	Notice of Exercise of Option to Buy, dated September 12, 2017.	X
31.1	Principal Executive Officer Certification pursuant to Securities Exchange Act Rules 13a-14(a) and 15d-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.	X
31.2	Principal Financial Officer Certification pursuant to Securities Exchange Act Rule 13a-14(a) and 15d-14(a) as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.	X
32.1	Principal Executive Officer and Principal Financial Officer Certifications pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.	X
101	The following financial information from the ABIOMED, Inc. Quarterly Report on Form 10-Q for the quarter ended September 30, 2017, formatted in Extensible Business Reporting Language (XBRL): (i) Condensed Consolidated Balance Sheets as of September 30, 2017 and March 31, 2017; (ii) Condensed Consolidated Statements of Operations for the three and six months ended September 30, 2017 and 2016; (iii) Condensed Consolidated Statements of Comprehensive Income for the three and six months ended September 30, 2017 and 2016; (iv) Condensed Consolidated Statements of Cash Flows for the six months ended September 30, 2017 and 2016; and (v) Notes to Condensed Consolidated Financial Statements.	X

32

ABIOMED, INC. AND SUBSIDIARIES

PART II. OTHER INFORMATION

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.

	ABIOMED, Inc.
Date: November 2, 2017	/s/    IAN W. MCLEOD
	Ian W. McLeod
	Vice President and Corporate Controller
	(Interim Principal Financial and Accounting Officer)

33

EX-10.1

Exhibit 10.1

September 12, 2017

(By Electronic Mail and Federal Express)

Leo C. Thibeault, Jr.

513 Turtle Hatch Lane,

Naples, FL 34103
Email: chuckthibeault@comcast.net

Re: Notice of Exercise of Option to Buy

Dear Chuck:

Reference is made to that certain Lease, dated as of August 12, 2016 (the “Lease”), by and between the Thibeault Nominee Trust, as lessor (“Lessor”), and Abiomed, Inc., as lessee (“Lessee”).  Capitalized terms used but not defined herein shall have the meanings set forth in the Lease.

Pursuant to Section 35 of the Lease, Lessee hereby exercises its Option to Buy.  The closing date of the sale of the Premises from Lessor to Lessee shall occur on October 30, 2017, unless otherwise extended pursuant to Section 35 of the Lease or agreement between Lessor and Lessee.  Per Section 35(a) of the Lease, the purchase price shall be $16,500,000.00.  This letter is delivered by Lessee to Lessor in satisfaction of the written notice required by Section 35 of the Lease.

[Signature Page Follows]

Very truly yours,

ABIOMED, INC.,
a Delaware corporation

By: /s/ Michael R. Minogue

Name: Michael R. Minogue

Title:  Chairman, President and Chief Executive Officer

CC:Marc Frey, Esq.

Jack Creedon, Esq. (e-mail only)

Matthew Tosto, Esq. (e-mail only)

RECEIPT ACKNOWLEDGED:

Thibeault Nominee Trust

By:/s/ Leo C. Thibeault, Jr.

Name: Leo C. Thibeault, Jr.

Title: Trustee

Date: 9/13/2017

EX-31.1

Exhibit 31.1

CERTIFICATIONS

I, Michael R. Minogue certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of ABIOMED, 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 ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this Report is being prepared;

(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: November 2, 2017	/s/ Michael R. Minogue
	Michael R. Minogue
	Chairman, President and Chief Executive Officer (Principal Executive Officer)

EX-31.2

Exhibit 31.2

I, Ian W. McLeod certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of ABIOMED, 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 ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this Report is being prepared;

(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: November 2, 2017	/s/ IAN W. MCLEOD
	Ian W. McLeod
	Vice President and Corporate Controller (Interim Principal Financial and Accounting Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. § 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report on Form 10-Q of ABIOMED, Inc., (the “Company”) for the quarter ended September 30, 2017, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned President and Chief Executive Officer, and Vice President and Corporate Controller, of the Company, certifies, to the best knowledge and belief of the signatory, pursuant to 18 U.S.C. § 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ MICHAEL R. MINOGUE	/s/ IAN W. MCLEOD
Michael R. Minogue Chairman, President and Chief Executive Officer	Ian W. McLeod Vice President and Corporate Controller (Interim Principal Financial and Accounting Officer)
Date: November 2, 2017	Date: November 2, 2017

XML

Document and Entity Information - shares	6 Months Ended
	Sep. 30, 2017	Oct. 27, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Trading Symbol	ABMD
Entity Registrant Name	ABIOMED INC
Entity Central Index Key	0000815094
Current Fiscal Year End Date	--03-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		44,216,145

XML

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2017	Mar. 31, 2017
Current assets:
Cash and cash equivalents	$ 44,536	$ 39,040
Short-term marketable securities	218,661	190,908
Accounts receivable, net	57,327	54,055
Inventories	40,632	34,931
Prepaid expenses and other current assets	9,014	8,024
Total current assets	370,170	326,958
Long-term marketable securities	55,954	47,143
Property and equipment, net	97,697	87,777
Goodwill	34,332	31,045
In-process research and development	16,016	14,482
Long-term deferred tax assets, net	106,798	34,723
Other assets	13,686	8,286
Total assets	694,653	550,414
Current liabilities:
Accounts payable	16,667	20,620
Accrued expenses	35,256	37,703
Deferred revenue	10,584	10,495
Current portion of capital lease obligation	851	799
Total current liabilities	63,358	69,617
Other long-term liabilities	598	3,251
Contingent consideration	9,835	9,153
Long-term deferred tax liabilities	866	783
Capital lease obligation, net of current portion	15,110	15,539
Total liabilities	89,767	98,343
Commitments and contingencies (Note 10)
Stockholders' equity:
Class B Preferred Stock, $.01 par value Authorized - 1,000,000 shares; Issued and outstanding - none
Common stock, $.01 par value Authorized - 100,000,000 shares; Issued - 45,921,029 shares at September 30, 2017 and 45,249,281 shares at March 31, 2017 Outstanding - 44,200,784 shares at September 30, 2017 and 43,673,286 shares at March 31, 2017	442	437
Additional paid in capital	592,081	565,962
Retained earnings (accumulated deficit)	90,164	(46,959)
Treasury stock at cost - 1,720,245 shares at September 30, 2017 and 1,575,995 shares at March 31, 2017	(65,999)	(46,763)
Accumulated other comprehensive loss	(11,802)	(20,606)
Total stockholders' equity	604,886	452,071
Total liabilities and stockholders' equity	$ 694,653	$ 550,414

XML

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Sep. 30, 2017	Mar. 31, 2017
Statement Of Financial Position [Abstract]
Class B Preferred Stock, par value	$ 0.01	$ 0.01
Class B Preferred Stock, Authorized	1,000,000	1,000,000
Class B Preferred Stock, Issued	0	0
Class B Preferred Stock, outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, Authorized	100,000,000	100,000,000
Common stock, Issued	45,921,029	45,249,281
Common stock, Outstanding	44,200,784	43,673,286
Treasury stock, shares	1,720,245	1,575,995

XML

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenue:
Product revenue	$ 132,782	$ 102,928	$ 265,213	$ 205,917
Funded research and development	41	27	78	33
Total Revenue	132,823	102,955	265,291	205,950
Costs and expenses:
Cost of product revenue	21,627	17,309	43,489	32,379
Research and development	19,390	18,052	36,321	33,712
Selling, general and administrative	60,080	53,086	120,677	104,118
Costs and Expenses, Total	101,097	88,447	200,487	170,209
Income from operations	31,726	14,508	64,804	35,741
Other income (expense):
Investment income, net	781	342	1,416	611
Other (expense) income, net	(23)	(114)	56	(191)
Nonoperating Income (Expense), Total	758	228	1,472	420
Income before income taxes	32,484	14,736	66,276	36,161
Income tax provision	7,981	5,861	4,399	14,376
Net income	$ 24,503	$ 8,875	$ 61,877	$ 21,785
Basic net income per share	$ 0.56	$ 0.21	$ 1.41	$ 0.51
Basic weighted average shares outstanding	44,141	43,129	44,018	42,971
Diluted net income per share	$ 0.54	$ 0.20	$ 1.36	$ 0.49
Diluted weighted average shares outstanding	45,698	44,580	45,655	44,493

XML

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 24,503	$ 8,875	$ 61,877	$ 21,785
Other comprehensive gain (loss):
Foreign currency translation gains (losses)	2,696	812	8,849	(887)
Net unrealized gains (losses) on marketable securities	10	(18)	(45)	132
Other comprehensive gain (loss)	2,706	794	8,804	(755)
Comprehensive income	$ 27,209	$ 9,669	$ 70,681	$ 21,030

XML

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Operating activities:
Net income	$ 61,877	$ 21,785
Adjustments required to reconcile net income to net cash provided by operating activities:
Depreciation expense	5,320	2,958
Bad debt expense	(54)	(13)
Stock-based compensation	17,938	18,047
Write-down of inventory and other assets	2,528	1,354
Excess tax benefit from stock-based awards		(3,631)
Deferred tax provision	3,073	9,777
Change in fair value of contingent consideration	682	186
Changes in assets and liabilities:
Accounts receivable	(2,824)	(3,807)
Inventories	(5,363)	(6,284)
Prepaid expenses and other assets	(869)	(2,029)
Accounts payable	299	1,906
Accrued expenses and other liabilities	(3,174)	3,157
Deferred revenue	18	330
Net cash provided by operating activities	79,451	43,736
Investing activities:
Purchases of marketable securities	(131,934)	(134,235)
Proceeds from the sale and maturity of marketable securities	95,416	116,685
Purchase of other investment	(6,400)
Purchases of property and equipment	(17,675)	(10,453)
Net cash used for investing activities	(60,593)	(28,003)
Financing activities:
Proceeds from the exercise of stock options	5,257	5,764
Excess tax benefit from stock-based awards		3,631
Taxes paid related to net share settlement of vesting of stock awards	(19,237)	(19,608)
Proceeds from the issuance of stock under employee stock purchase plan	1,063	769
Principal payments on capital lease obligation	(377)	(83)
Net cash used for financing activities	(13,294)	(9,527)
Effect of exchange rate changes on cash	(68)	272
Net increase in cash and cash equivalents	5,496	6,478
Cash and cash equivalents at beginning of period	39,040	48,231
Cash and cash equivalents at end of period	44,536	54,709
Supplemental disclosure of cash flow information:
Cash paid for income taxes	584	560
Cash paid for interest on capital lease obligation	259	89
Supplemental disclosure of non-cash investing and financing activities:
Property and equipment under capital lease obligation		16,784
Property and equipment in accounts payable and accrued expenses	$ 897	$ 3,810

XML

Nature of Business

6 Months Ended

Sep. 30, 2017

Accounting Policies [Abstract]

Nature of Business

Note 1. Nature of Business

Abiomed, Inc. (the “Company” or “Abiomed”) is a provider of mechanical circulatory support devices and offers a continuum of care to heart failure patients. The Company develops, manufactures and markets proprietary products that are designed to enable the heart to rest, heal and recover by improving blood flow and/or performing the pumping function of the heart. The Company’s products are used in the cardiac catheterization lab, or cath lab, by interventional cardiologists and in the heart surgery suite by heart surgeons for patients who are in need of hemodynamic support prophylactically or emergently before, during or after angioplasty or heart surgery procedures.

XML

Basis of Preparation and Summary of Significant Accounting Policies

6 Months Ended

Sep. 30, 2017

Accounting Policies [Abstract]

Basis of Preparation and Summary of Significant Accounting Policies

Note 2. Basis of Preparation and Summary of Significant Accounting Policies

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles, or GAAP, for interim financial reporting and in accordance with Article 10 of Regulation S-X. Accordingly, they do not include all of the information and note disclosures required by GAAP for complete financial statements. These statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2017 that has been filed with the Securities and Exchange Commission (the “SEC”).

In the opinion of management, the accompanying unaudited condensed consolidated financial statements include all normal and recurring adjustments that are necessary for a fair presentation of results for the interim periods presented. The results of operations for any interim period may not be indicative of results for the full fiscal year or any other subsequent period.

There have been no changes in the Company’s significant accounting policies for the three and six months ended September 30, 2017 as compared to the significant accounting policies described in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2017 that has been filed with the SEC.

New Accounting Pronouncements Adopted

Effective April 1, 2017, the Company adopted the Financial Accounting Standards Board (“FASB”) standard update ASU 2016-09, “Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting” (“ASU 2016-09”) which simplifies several aspects of the accounting for share-based payment transactions, including income tax consequences, recognition of stock compensation award forfeitures, classification of awards as either equity or liabilities, the calculation of diluted shares outstanding and classification on the statement of cash flows.

The following table summarizes the most significant impacts of ASU 2016-09 for the three and six months ended September 30, 2017:

Description of Change:	Impact of Change Upon Adoption on April 1, 2017 and for the Three and Six Months Ended September 30, 2017:	Adoption Method:
The new standard eliminates the requirement that excess tax benefits be realized through a reduction in income taxes payable before a company can recognize them in the statement of operations.	As a result, on April 1, 2017, the Company recorded a cumulative-effect adjustment to increase retained earnings and deferred tax assets by $76.4 million for excess tax benefits not previously recognized.	Modified-retrospective (required)
Excess tax benefits related to restricted stock unit vestings or stock option exercises are recorded through the statement of operations.	The income tax benefit for the three and six months ended September 30, 2017, included excess tax benefits of $4.5 million and $21.3 million, respectively. These recognized excess tax benefits resulted from restricted stock units that vested or stock options that were exercised during the three and six months ended September 30, 2017.	Prospective (required)
Excess tax benefits related to restricted stock unit vestings or stock option exercises are classified as operating cash flows instead of financing cash flows.	Increase in cash flow from operating activities and decrease in cash flow from financing activities by approximately $21.3 million for the six months ended September 30, 2017. The statement of cash flows for the prior period has not been adjusted.	Prospective (elected)
Calculation of diluted weighted average shares outstanding under the treasury method no longer assume that tax benefits related to stock-based awards are used to repurchase common stock.	The Company excluded the related tax benefits when applying the treasury stock method for computing diluted shares outstanding on a prospective basis as required by  ASU 2016-09.	Prospective (required)
An accounting policy election can be made to reduce stock-based compensation expense for forfeitures as they occur instead of estimating forfeitures that are expected to occur.	The Company made an accounting policy election to account for forfeitures as they occur with the change applied on a modified retrospective basis with a cumulative effect adjustment on April 1, 2017 to increase additional paid-in capital by $1.8 million, increase deferred tax assets by $0.7 million and decrease retained earnings by $1.1 million. The Company elected to make this accounting policy change to simplify the accounting for stock-based compensation and believes this method provides a more accurate reflection of periodic stock based compensation cost. Prior to the adoption of this accounting standard, the Company estimated at grant the likelihood that the award would ultimately vest, and revised the estimate, if necessary, in future periods if the actual forfeiture rate differed.	Modified-retrospective (elected)
Cash payments to tax authorities for shares withheld to meet employee tax withholding requirements on restricted stock units are classified as financing cash flow instead of operating cash flow.	No change since the Company has historically presented these amounts as a financing activity. Prior to ASU 2016-09, U.S. GAAP has not specified how these types of transactions should be classified in the statement of cash flows.	N/A

See table below for the changes in beginning stockholders' equity as a result of this implementation.

	Common Stock					Treasury Stock
	Number of shares			Par value		Number of shares			Amount				Additional Paid in Capital			Accumulated Deficit				Accumulated Other Comprehensive Income (Loss)				Total Stockholders' Equity
Balance, March 31, 2017		43,673,286	$		437		1,575,995	$		(46,763	)	$		565,962	$		(46,959	)	$		(20,606	)	$		452,071
Cumulative effect of adoption of new accounting standard														1,835			75,246								77,081
Balance, April 1, 2017		43,673,286	$		437		1,575,995	$		(46,763	)	$		567,797	$		28,287		$		(20,606	)	$		529,152

Recent Accounting Pronouncements

In May 2014, the FASB issued ASU 2014-09,Revenue from Contracts with Customersto provide updated guidance on revenue recognition. This new standard will replace most of the existing revenue recognition guidance in U.S. GAAP when it becomes effective and permits the use of either the retrospective or cumulative effect transition method. ASU 2014-09 requires a company to recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies may need to use more judgment and make more estimates than under the current accounting guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. The guidance also requires expanded disclosures relating to the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. Additionally, qualitative and quantitative disclosures are required about customer contracts, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. The Company is assessing all of the potential impacts of the revenue recognition guidance. Although the Company has not yet completed its assessment of the new revenue recognition guidance, the Company believes that the new revenue recognition guidance generally supports the recognition of revenue at a point-in-time for product sales and over an extended period of time for preventative maintenance service agreements, which is consistent with its current revenue recognition model. The Company does anticipate that the new revenue standard will result in expanded financial statement disclosures relating to the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The Company is reviewing its internal controls and processes over revenue recognition in order to prepare for the adoption of and ongoing accounting under the new standard. As the Company completes its evaluation of this new accounting standard, new information may arise that could change the Company’s current understanding of the impact to revenue and expense recognized and financial statement disclosures. Additionally, the Company will continue to monitor industry activities and any additional guidance provided by regulators, standards setters, or the accounting profession and adjust the Company’s assessment and implementation plans accordingly, if required. ASU 2014-09 will become effective for the Company beginning in fiscal 2019.

In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities.  This guidance changes accounting for financial assets and financial liabilities under the fair value option and includes additional presentation and disclosure requirements for financial instruments. ASU 2016-01 requires financial assets to be measured at fair value with changes in fair value recognized in the statement of operations. The ASU eliminates the available-for-sale classification for marketable securities in which changes in fair value are currently recorded as a component of other comprehensive income. ASU 2016-01 is effective for annual reporting periods beginning after December 15, 2017, with early adoption permitted with specific application guidance. The Company is currently in the process determining the impact of the ASU 2016-01 amendment on its consolidated financial statements. ASU 2016-01 will become effective for the Company beginning in fiscal 2019.

In February 2016, the FASB issued ASU 2016-02, Leases. This guidance requires an entity to recognize lease liabilities and a right-of-use asset for all leases on the balance sheet and to disclose key information about the entity's leasing arrangements. ASU 2016-02 is effective for annual reporting periods beginning after December 15, 2018, including interim periods within that reporting period, with earlier adoption permitted. ASU 2016-02 must be adopted using a modified retrospective approach for all leases existing at, or entered into after the date of initial adoption, with an option to elect to use certain transition relief. The Company is currently in the process of evaluating its lessee arrangements to determine the impact of ASU 2016-02 amendment on its consolidated financial statements. This evaluation includes a review of the Company’s existing leasing arrangements on its facilities. ASU 2016-02 will become effective for the Company beginning in fiscal 2020.

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Net Income Per Share

6 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

Net Income Per Share

Note 3. Net Income Per Share

Basic net income per share is computed by dividing net income by the weighted average number of common shares outstanding during the period. Diluted net income per share is computed by dividing net income by the weighted average number of dilutive common shares outstanding during the period. Diluted shares outstanding are calculated by adding to the weighted average shares outstanding any potential dilutive securities outstanding for the period. Potential dilutive securities include stock options, restricted stock units, performance-based stock awards and shares to be purchased under the Company’s employee stock purchase plan. The Company’s basic and diluted net income per share for the three and six months ended September 30, 2017 and 2016 were as follows (in thousands, except per share data):

	For the Three Months Ended September 30,				For the Six Months Ended September 30,
	2017		2016		2017		2016
Basic Net Income Per Share
Net income	$	24,503	$	8,875	$	61,877	$	21,785
Weighted average shares used in computing basic net    income per share		44,141		43,129		44,018		42,971
Net income per share - basic	$	0.56	$	0.21	$	1.41	$	0.51

	For the Three Months Ended September 30,				For the Six Months Ended September 30,
	2017		2016		2017		2016
Diluted Net Income Per Share
Net income	$	24,503	$	8,875	$	61,877	$	21,785
Weighted average shares used in computing basic net    income per share		44,141		43,129		44,018		42,971
Effect of dilutive securities		1,557		1,451		1,637		1,522
Weighted average shares used in computing diluted    net income per share		45,698		44,580		45,655		44,493
Net income per share - diluted	$	0.54	$	0.20	$	1.36	$	0.49

For the three and six months ended September 30, 2017, approximately 200 and 5,700 shares underlying out-of-the-money stock options, respectively, were excluded in the computation of diluted earnings per share because their effect would have been anti-dilutive. Also, approximately 77,000 restricted shares in each of the three and six months ended September 30, 2017, respectively, related to performance-based awards for which milestones have not been met, were not included in the computation of diluted earnings per share.

For the three and six months ended September 30, 2016, approximately 1,500 and 8,800 shares underlying out-of-the-money stock options, respectively, were excluded in the computation of diluted earnings per share because their effect would have been anti-dilutive. Also, approximately 186,000restricted shares in each of the three and six months ended September 30, 2016, related to performance-based awards for which milestones had not been met at that date were not included in the computation of diluted earnings per share.

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Marketable Securities and Fair Value Measurements

6 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

Marketable Securities and Fair Value Measurements

Note 4. Marketable Securities and Fair Value Measurements

Marketable Securities

The Company’s marketable securities are classified as available-for-sale securities and, accordingly, are recorded at fair value. The difference between amortized cost and fair value is included in stockholders’ equity.

The Company’s marketable securities at September 30, 2017 and March 31, 2017 are invested in the following:

	Amortized		Gross Unrealized		Gross Unrealized			Fair Market
	Cost		Gains		Losses			Value
	(in $000's)
September 30, 2017:
Short-term U.S. Treasury mutual fund securities	$	36,178	$	—	$	(9	)	$	36,169
Short-term government-backed securities		124,654		—		(87	)		124,567
Short-term corporate debt securities		57,955		2		(32	)		57,925
Long-term government-backed securities		48,186		—		(61	)		48,125
Long-term corporate debt securities		7,835		—		(6	)		7,829
	$	274,808	$	2	$	(195	)	$	274,615

	Amortized		Gross Unrealized		Gross Unrealized			Fair Market
	Cost		Gains		Losses			Value
	(in $000's)
March 31, 2017
Short-term U.S. Treasury mutual fund securities	$	45,199	$	—	$	(13	)	$	45,186
Short-term government-backed securities		90,199		1		(87	)		90,113
Short-term corporate debt securities		55,465		—		(31	)		55,434
Long-term U.S. Treasury mutual fund securities		1,998		—		(3	)		1,995
Long-term government-backed securities		43,484		5		(18	)		43,471
Long-term corporate debt securities		1,853		—		(1	)		1,852
	$	238,198	$	6	$	(153	)	$	238,051

Fair Value Hierarchy

Fair value is defined as the price that would be received upon the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Financial assets and liabilities carried at fair value are to be classified and disclosed in one of the following three categories:

Level 1: Quoted market prices in active markets for identical assets or liabilities.

Level 2: Observable market-based inputs or unobservable inputs that are corroborated by market data.

Level 3: Unobservable inputs that are not corroborated by market data.

Level 1 primarily consists of financial instruments whose values are based on quoted market prices such as exchange-traded instruments and listed equities.

Level 2 includes financial instruments that are valued using models or other valuation methodologies. These models are primarily industry-standard models that consider various assumptions, including time value, yield curve, volatility factors, prepayment speeds, default rates, loss severity, current market and contractual prices for the underlying financial instruments, as well as other relevant economic measures. Substantially all of these assumptions are observable in the marketplace, can be derived from observable data or are supported by observable levels at which transactions are executed in the marketplace.

Level 3 is comprised of unobservable inputs that are supported by little or no market activity. Financial assets are considered Level 3 when their fair values are determined using pricing models, discounted cash flows, or similar techniques, and at least one significant model assumption or input is unobservable.

The following table presents the Company’s financial instruments recorded at fair value in the condensed consolidated balance sheets, classified according to the three categories described above:

	Level 1		Level 2		Level 3		Total
September 30, 2017:	(in $000's)
Assets
Short-term U.S. Treasury mutual fund securities	$	—	$	36,169	$	—	$	36,169
Short-term government-backed securities		—		124,567		—		124,567
Short-term corporate debt securities		—		57,925		—		57,925
Long-term government-backed securities		—		48,125		—		48,125
Long-term corporate debt securities		—		7,829		—		7,829
Liabilities
Contingent consideration		—		—		9,835		9,835

	Level 1		Level 2		Level 3		Total
March 31, 2017:	(in $000's)
Assets
Short-term U.S. Treasury mutual fund securities	$	—	$	45,186	$	—	$	45,186
Short-term government-backed securities		—		90,113		—		90,113
Short-term corporate debt securities		—		55,434		—		55,434
Long-term U.S. Treasury mutual fund securities		—		1,995		—		1,995
Long-term government-backed securities		—		43,471		—		43,471
Long-term corporate debt securities		—		1,852		—		1,852
Liabilities
Contingent consideration		—		—		9,153		9,153

The Company has determined that the estimated fair value of its investments in U.S. Treasury mutual fund securities, government-backed securities, and corporate debt securities are reported as Level 2 financial assets as they are not exchange-traded instruments.

The Company’s financial liabilities consisted of contingent consideration potentially payable related to the acquisition of ECP Entwicklungsgesellschaft mbH (“ECP”) and AIS GmbH Aachen Innovative Solutions (“AIS”), in July 2014. The Company acquired ECP for $13.0 million in cash, with additional potential payouts totaling $15.0 million based on the achievement of certain clinical and regulatory and revenue-based milestones. These potential milestone payments may be made, at the Company’s option, by a combination of cash or Abiomed common stock. The Company uses a combination of an income approach, based on various revenue and cost assumptions and applying a probability to each outcome and a Monte-Carlo valuation model. For the clinical and regulatory milestone, probabilities were applied to each potential scenario and the resulting values were discounted using a rate that considers weighted average cost of capital as well as a specific risk premium associated with the riskiness of the earn out itself, the related projections, and the overall business. The revenue-based milestone is valued using a Monte-Carlo valuation model, which simulates estimated future revenues during the earn out-period using management's best estimates. Projected revenues are based on our most recent internal operational budgets and long-range strategic plans.

This liability is reported as Level 3 as the estimated fair value of the contingent consideration related to the acquisition of the ECP requires significant management judgment or estimation and is calculated using the following valuation methods:

	Fair Value at				Weighted Average
	September 30, 2017			Significant	(range, if
	(in $000's)		Valuation Methodology	Unobservable Input	applicable)
Clinical and regulatory milestone	$	5,660	Probability weighted income approach	Projected fiscal year of milestone payments	2019 to 2022
				Discount rate	2.6% to 3.1%
				Probability of occurrence	Probability adjusted level of 40% for the base case scenario and 0% to 28% for various upside and downside scenarios
Revenue-based milestone		4,175	Monte Carlo simulation model	Projected fiscal year of milestone payments	2023 to 2035
				Discount rate		18%
				Expected volatility for forecasted revenues		50%
	$	9,835

The following table summarizes the change in fair value, as determined by Level 3 inputs, of the contingent consideration for the three and six months ended September 30, 2017 and 2016:

	For the Three Months Ended September 30,				For the Six Months Ended September 30,
		2017		2016		2017		2016
	(in $000's)				(in $000's)
Level 3 liabilities, beginning balance	$	9,418	$	7,739	$	9,153	$	7,563
Additions		—		—		—		—
Payments		—		—		—		—
Change in fair value		417		10		682		186
Level 3 liabilities, ending balance	$	9,835	$	7,749	$	9,835	$	7,749

The change in fair value of the contingent consideration was primarily due to the passage of time on the fair value measurement of milestones related to the ECP acquisition. Adjustments associated with the change in fair value of contingent consideration are included in research and development expenses in the Company’s condensed consolidated statements of operations. Significant increases or decreases in any of the probabilities of success or changes in expected timelines for achievement of any of these milestones could result in a significantly higher or lower fair value of the liability. The fair value of the contingent consideration at each reporting date is updated by reflecting the changes in fair value reflected in the Company’s statement of operations. There is no assurance that any of the conditions for the milestone payments will be met.

Other Investments

The Company periodically makes investments in private medical device companies that focus on heart failure, heart pump and other medical device technologies. The aggregate carrying amount of the Company’s other investments was $12.6 million and $7.2 million at September 30, 2017 and March 31, 2017, respectively, and is classified within other assets in the unaudited condensed consolidated balance sheets. In July 2017, the Company made an additional $6.0 million investment in a private medical device company and recorded this transaction during the three months ended September 30, 2017. These investments are accounted for using the cost method and are evaluated for impairment and measured at fair value only if there are identified events or changes in circumstances that may have a significant adverse effect on the fair value of these investments.

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Property and Equipment

6 Months Ended

Sep. 30, 2017

Property Plant And Equipment [Abstract]

Property and Equipment

Note 5. Property and Equipment

The components of property and equipment are as follows:

	September 30, 2017			March 31, 2017
Land	$	4,474		$	4,046
Building and building improvements		13,669			10,900
Capital lease asset		16,784			16,784
Leasehold improvements		37,292			34,854
Machinery and equipment		33,677			27,989
Furniture and fixtures		7,578			3,899
Construction in progress		10,458			9,257
Total cost		123,932			107,729
Less accumulated depreciation		(26,235	)		(19,952	)
	$	97,697		$	87,777

In August 2016, the Company entered into a new lease agreement to expand its existing corporate headquarters in Danvers, Massachusetts (see Note 10). The Company recorded $16.8 million for this lease as a capital lease asset with depreciation expense being recorded on a straight line basis over 15 years. In September 2017, the Company exercised its option to buy the corporate headquarters, including land and improvements, pursuant to the terms of the existing lease agreement. The Company entered into a purchase and sale agreement with the landlord and acquired the Company’s headquarters for approximately $16.5 million on October 30, 2017.

In December 2016, the Company entered into a purchase and sale agreement to acquire its existing European headquarters in Aachen, Germany, consisting of 33,000 square feet of space. The Company acquired the property in February 2017. The acquisition cost for the land and building was approximately $12.6 million, with $4.0 million being recorded to land and $8.6 million being recorded to the building and building improvements.

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Goodwill and In-Process Research and Development

6 Months Ended

Sep. 30, 2017

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and In-Process Research and Development

Note 6. Goodwill and In-Process Research and Development

The carrying amount of goodwill at September 30, 2017 and March 31, 2017 was $34.3 million and $31.0 million, respectively, and has been recorded in connection with the Company’s acquisition of Impella Cardiosystems AG, in May 2005 and ECP and AIS in July 2014. The goodwill activity is as follows:

	(in $000's)
Balance at March 31, 2017	$	31,045
Foreign currency translation impact		3,287
Balance at September 30, 2017	$	34,332

The Company evaluates goodwill and in-process research and development (“IPR&D”) assets at least annually at October 31, as well as whenever events or changes in circumstances suggest that the carrying amount may not be recoverable.  The Company has no accumulated impairment losses on goodwill or IPR&D assets.

The carrying amount of IPR&D assets at September 30, 2017 and March 31, 2017 was $16.0 million and $14.5 million, respectively, and has been recorded in conjunction with the Company’s acquisition of ECP and AIS, in July 2014. The estimated fair value of IPR&D assets at the acquisition date was determined using a probability-weighted income approach, which discounts expected future cash flows to present value. The projected cash flows from the expandable catheter pump technology were based on certain key assumptions, including estimates of future revenue and expenses, taking into account the stage of development of the technology at the acquisition date and the time and resources needed to complete development. The Company used a discount rate of 21.5% and cash flows that have been probability adjusted to reflect the risks of product commercialization, which the Company believes are appropriate and representative of market participant assumptions.

The carrying value of the Company’s IPR&D assets and the change in the balance for the six months ended September 30, 2017 are as follows:

	(in $000's)
Balance at March 31, 2017	$	14,482
Foreign currency translation impact		1,534
Balance at September 30, 2017	$	16,016

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Accrued Expenses

6 Months Ended

Sep. 30, 2017

Payables And Accruals [Abstract]

Accrued Expenses

Note 7. Accrued Expenses

Accrued expenses consist of the following:

	September 30, 2017		March 31, 2017
	(in $000's)
Employee compensation	$	21,643	$	23,290
Sales and income taxes		4,175		3,180
Professional, legal and accounting fees		3,178		2,019
Research and development		2,099		2,349
Marketing		1,452		1,827
Warranty		954		717
Accrued capital expenditures		—		2,300
Other		1,755		2,021
	$	35,256	$	37,703

Employee compensation consists primarily of accrued bonuses, accrued commissions and accrued employee benefits at September 30, 2017 and March 31, 2017.

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Stock-Based Compensation

6 Months Ended

Sep. 30, 2017

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation

Note 8. Stock-Based Compensation

The following table summarizes stock-based compensation expense by financial statement line item in the Company’s condensed consolidated statements of operations for the three and six months ended September 30, 2017 and 2016:

	For the Three Months Ended September 30,				For the Six Months Ended September 30,
		2017		2016		2017		2016
	(in $000's)				(in $000's)
Cost of product revenue	$	372	$	221	$	731	$	520
Research and development		1,205		2,638		2,544		3,893
Selling, general and administrative		7,705		6,791		14,663		13,634
	$	9,282	$	9,650	$	17,938	$	18,047

Stock Options

The following table summarizes the stock option activity for the six months ended September 30, 2017:

						Weighted
				Weighted		Average		Aggregate
				Average		Remaining		Intrinsic
	Options			Exercise		Contractual		Value
	(in thousands)			Price		Term (years)		(in thousands)
Outstanding at beginning of period		1,646		$	32.09		5.46
Granted		145			137.70
Exercised		(305	)		17.25
Cancelled and expired		(51	)		100.48
Outstanding at end of period		1,435		$	43.47		5.56	$	179,543
Exercisable at end of period		1,098		$	24.23		4.57	$	158,474
Options vested and expected to vest at end of period		1,405		$	42.84		5.51	$	176,658

The aggregate intrinsic value of options exercised was $36.5 million for the six months ended September 30, 2017. The total fair value of options that vested during the six months ended September 30, 2017 was $4.4 million.

The remaining unrecognized stock-based compensation expense for unvested stock option awards at September 30, 2017 was approximately $11.6 million, net of forfeitures, and the weighted-average period over which this cost will be recognized is 2.5 years.

The Company estimates the fair value of each stock option granted at the grant date using the Black-Scholes option valuation model. The weighted average grant-date fair values and weighted average assumptions used in the calculation of fair value of options granted during the three and six months ended September 30, 2017 and 2016 was as follows:

	For the Three Months Ended September 30,						For the Six Months Ended September 30,
		2017			2016			2017			2016
Weighted average grant-date fair value	$	57.38		$	46.50		$	50.26		$	41.60
Valuation assumptions:
Risk-free interest rate		1.88	%		1.11	%		1.85	%		1.32	%
Expected option life (years)		4.06			4.14			4.07			4.13
Expected volatility		43.4	%		49.0	%		43.6	%		49.6	%

Restricted Stock Units

The following table summarizes activity of restricted stock units for the six months ended September 30, 2017:

	Number of Shares			Weighted Average Grant Date Fair Value
	(in thousands)			(per share)
Restricted stock units at beginning of period		1,056		$	80.50
Granted		291		$	136.17
Vested		(355	)	$	52.84
Forfeited		(90	)	$	97.51
Restricted stock units at end of period		902		$	107.71

The remaining unrecognized compensation expense for outstanding restricted stock units, including performance and market-based awards, as of September 30, 2017 was $44.6 million and the weighted-average period over which this cost will be recognized is 2.1 years.

Performance-Based Awards

In May 2017, performance-based awards of restricted stock units for the potential issuance of approximately 159,000 shares of common stock were issued to certain executive officers and employees, all of which vest upon achievement of prescribed service milestones by the award recipients and performance milestones by the Company. As of September 30, 2017, the Company is recognizing compensation expense based on the probable outcome related to the prescribed performance targets on the outstanding awards.

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Income Taxes

6 Months Ended

Sep. 30, 2017

Income Tax Disclosure [Abstract]

Income Taxes

Note 9. Income Taxes

The income tax provision represents the Company’s federal, state and foreign tax provision estimate. The Company’s income tax provision of $8.0 million and $4.4 million for the three and six months ended September 30, 2017, respectively. The Company’s income tax provision was $5.9 million and $14.4 million for the three and six months ended September 30, 2016, respectively.

As discussed further in “Note 2. Basis of Presentation and Summary of Significant Accounting Policies,” the Company adopted ASU 2016-09 in the first quarter of fiscal 2018. ASU 2016-09 requires excess tax benefits and shortfalls to be recognized in the income tax provision as discrete items in the period when restricted stock units vest or stock option exercises occur, whereas previously such income tax effects were recorded as part of additional paid-in capital only when the related tax deduction resulted in a reduction of current income taxes payable. On April 1, 2017, the Company recorded a cumulative-effect adjustment to increase retained earnings and deferred tax assets by $76.4 million for excess tax benefits not previously recognized. The adoption of ASU 2016-09 also resulted in excess tax benefits associated with stock-based awards of $4.5 million and $21.3 million being recognized as an income tax benefit for three and six months ended September 30, 2017, respectively. These recognized excess tax benefits resulted from restricted stock units that vested or stock options that were exercised during the three and six months ended September 30, 2017. The amount of future excess tax benefits or shortfalls will likely fluctuate from period to period based on the price of the Company’s stock, the number of restricted stock units vesting or stock option exercises, and the fair value assigned to such stock-based awards under U.S. GAAP. Accordingly, the Company’s expects that the adoption of ASU 2016-09 will result in more volatility to its effective income tax rate, net income and earnings per share in future periods.

The estimated annual effective income tax rate is based upon estimated income before income taxes for the year, the geographical composition of the estimated income before taxes and estimated permanent differences. The estimated annual effective income tax rate can fluctuate and may differ from the actual income tax rate recognized in fiscal 2018 for various reasons, including estimates of income before taxes, tax legislation, permanent differences, discrete items, and any adjustments between the income tax provision calculations and filed income tax returns.

The significant differences between the statutory income tax rate and effective income tax rate for the three and six months ended September 30, 2017 and 2016 were as follows:

	For the Three Months Ended September 30,							For the Six Months Ended September 30,
		2017			2016				2017			2016
Statutory income tax rate		35.0		%	35.0		%		35.0		%	35.0		%
Increase resulting from:
Excess tax benefits from stock-based awards		(13.7	)		—				(32.1	)		—
Credits		(1.2	)		(1.3	)			(1.2	)		(1.3	)
State taxes, net		3.5			3.4				3.5			3.3
Permanent differences		1.8			2.7				1.8			2.8
Other		(0.8	)		—				(0.4	)		—
Effective tax rate		24.6		%	39.8		%		6.6		%	39.8		%

The Company and its subsidiaries are subject to U.S. federal income tax, as well as income tax of multiple state and foreign jurisdictions. Fiscal years 2012 through 2017 remain open to examination in Germany and Abiomed Europe GmbH, the Company’s main operating subsidiary in Germany, is currently being audited for fiscal years 2012 through 2015. In July 2017, the Company was notified by the Internal Revenue Service, or IRS, that it has selected our federal tax return for fiscal 2016 for examination. In September 2017, the Company was notified by German tax authorities that our ECP subsidiary in Germany will be audited for the year ended December 31, 2014 and the three months ended March 31, 2015. All tax years remain subject to examination by the IRS and state tax authorities, because the Company has net operating loss and tax credit carryforwards which may be utilized in future years to offset taxable income, those years may also be subject to review by relevant taxing authorities if the carryforwards are utilized.

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Commitments and Contingencies

6 Months Ended

Sep. 30, 2017

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 10. Commitments and Contingencies

Commitments

Leases

The Company’s corporate headquarters is located in Danvers, Massachusetts. This facility encompasses most of the Company’s U.S. operations, including research and development, manufacturing, sales and marketing and general and administrative departments. In August 2016, the Company entered into a new lease agreement to expand its existing corporate headquarters which includes 163,560 square feet of space. The initial term of the lease agreement commenced on August 12, 2016 and terminates on August 31, 2026. In September 2017, the Company exercised its option to buy the corporate headquarters, including land and improvements, pursuant to the terms of the existing lease agreement. The Company entered into a purchase and sale agreement with the landlord and acquired the Company’s headquarters for approximately $16.5 million on October 30, 2017.

The Danvers, Massachusetts building lease is being recorded as a capital lease.  The payments under the lease are accounted for as interest and principal payments over 15 years.  

A summary of future lease commitments related to the capital lease obligation is as follows:

	Capital Lease
	(in $000s)
Fiscal 2018, remaining portion	$	675
Fiscal 2019		1,349
Fiscal 2020		1,349
Fiscal 2021		1,373
Fiscal 2022		1,390
Thereafter		13,747
Total minimum lease payments		19,883
Less amounts representing interest		(3,922	)
Total capital lease obligation	$	15,961
Less current capital lease obligation		(851	)
Capital lease obligation, net of current portion	$	15,110

In February 2017, the Company entered into a lease agreement for additional office space in Danvers, Massachusetts, which expires in July 2022. The annual rent expense for the lease is estimated to be $0.2 million.

In September 2016, the Company entered into a lease agreement in Berlin, Germany which commenced in May 2017 and expires in May 2024. The annual rent expense for the lease is estimated to be $0.3 million.

The Company also entered into a lease agreement in October 2016 through September 2021 for an office in Tokyo, Japan which houses administrative, regulatory and training personnel in connection with the Company’s commercial launch in Japan. The annual rent expense for the lease is estimated to be $0.9 million.

Contingencies

From time to time, the Company is involved in legal and administrative proceedings and claims of various types. In some actions, the claimants seek damages, as well as other relief, which, if granted, would require significant expenditures. The Company records a liability in its consolidated financial statements for these matters when a loss is known or considered probable and the amount can be reasonably estimated. The Company reviews these estimates each accounting period as additional information is known and adjusts the loss provision when appropriate. If a matter is both probable to result in liability and the amount of loss can be reasonably estimated, the Company estimates and discloses the possible loss or range of loss. If the loss is not probable or cannot be reasonably estimated, a liability is not recorded in its consolidated financial statements.

In April 2014, the Company received an administrative subpoena from the Boston regional office of the United States Department of Health and Human Services, or HHS, Office of Inspector General requesting materials relating to the Company’s reimbursement of employee expenses and remuneration to healthcare providers from July 2012 through December 2012, in connection with a civil investigation under the False Claims Act (the “FCA Investigation”). Subsequently, the Company received Civil Investigative Demands from the U.S. Attorney’s Office for the District of Massachusetts that collectively sought additional information relating to this matter for the time period of January 1, 2011 through September 14, 2016. The Company continues to cooperate with the government in this investigation and is exploring ways to resolve this matter with the government. The Company is not able to predict what action, if any, might be taken in the future as a result of the investigation, or the potential impact on its financial position.

Thoratec Corporation, or Thoratec, a subsidiary of Abbott Laboratories, has challenged a number of Company owned patents in Europe in connection with the launch of their HeartMate PHP medical device, or PHP, in Europe. These actions relate to Thoratec’s ability to manufacture and sell their PHP product in Europe. These actions do not relate to the Company’s ability to manufacture or sell its Impella line of devices.

In December 2014, Thoratec filed a nullity suit in the German Federal Patent Court against a German “pigtail” patent owned by the Company with a flexible extension feature, and auxiliary pigtail, basket and funnel features. The validity hearing was held in November 2016 and the Federal Patent Court found the patent invalid. The Company is appealing this decision.

In August 2015, Thoratec filed a nullity action in the German Federal Patent Court against two Company owned patents covering a “magnetic clutch” feature. These magnetic clutch patents were acquired by the Company in July 2014, in connection with its acquisition of ECP and AIS. The validity hearing for the magnetic clutch patents was held in June 2017. The Company’s patents were upheld in an amended form to focus on the structure and interaction of the magnets in the clutch. The Federal Patent Court found certain unamended claims invalid.  The Company is appealing the decision with respect to the unamended claims.

In September 2015, the Company filed counterclaims in the magnetic clutch action in Germany asserting that the PHP product infringes the two magnetic clutch patents, a European pigtail patent, and the German pigtail patent. The infringement trial has been stayed, pending resolution of the German nullity actions.  

In February 2017, Thoratec filed an opposition in the European Patent Office against a Company patent acquired from ECP and AIS relating to a housing structure for an expandable pump. The Company filed an initial response to the opposition in July 2017.

In December 2015, the Company received a letter from Maquet Cardiovascular LLC, or Maquet, a subsidiary of the Getinge Group, asserting that the Company’s Impella devices infringe certain claims having guidewire, lumen and sensor features, which were in two Maquet patents and one pending patent application in the U.S. and elsewhere, and attached a draft litigation complaint and encouraged the Company to take a license from Maquet.  In January 2016, the Company responded to Maquet stating that it believed that the cited claims were invalid and that its Impella devices did not infringe the cited patents.  In May 2016, Maquet sent an additional letter notifying the Company that its pending U.S. patent application had been issued as a U.S. patent, repeated their earlier assertion and encouraged the Company to discuss taking a license from Maquet. The three patents expire September 2020, December 2020 and October 2021. In May 2016, the Company filed suit in U.S. District Court for the District of Massachusetts, or D. Mass., against Maquet seeking a declaratory judgment that the Company’s Impella devices do not infringe Maquet’s cited patent rights.  

In August 2016, Maquet sent another letter to the Company identifying four new U.S. continuation patent filings with claims that Maquet alleges are infringed by the Company’s Impella devices. Of the four U.S. continuation applications, one issued as a patent on January 17, 2017, one issued as a patent on February 7, 2017, one issued as a patent on March 21, 2017, and one issued as a patent on October 17, 2017.  These four issued patents will expire in September 2020.

In September 2016, Maquet filed a response to the Company’s suit in D. Mass., including various counterclaims alleging that the Company’s Impella 2.5, Impella CP, Impella 5.0, and Impella RP heart pumps infringe certain claims of the three original issued U.S. patents. On June 15, 2017, Maquet filed a motion for leave to amend its infringement counterclaims to add the three additional U.S. continuation patents mentioned above and to file various false advertising, unfair competition claims under state law and under the Lanham Act, and a trademark cancellation in the pending case.  Maquet’s amended complaint and counterclaim, like those it originally filed, seek injunctive relief and monetary damages in the form of a reasonable royalty, with three times the amount for alleged willful infringement. The amended complaint admits that Maquet’s currently commercially available products do not embody the claims of the asserted patents. On July 21, 2017, the Court granted the motion in part, allowing the three additional continuation patents to be added to the case, and denied the motion to add the false advertising, Lanham Act claims, and the trademark cancellation claims.  On October 26, 2017, Maquet filed an answer and counterclaims to Abiomed’s first amended complaint, including a counterclaim that the Company’s Impella 2.5, Impella CP, and Impella 5.0 heart pumps infringe certain claims of the seventh patent issued on October 17, 2017.  The Company believes that this counterclaim requires permission from the Court and will brief the Court on this issue.  

With regard to the first six Maquet patents mentioned above, in March and April 2017 the Company filed requests for inter partes review, or IPR, at the U.S. Patent & Trademark Office’s Patent Trial and Appeals Board, or PTAB, asserting that the claims are invalid in view of prior art blood pump technology. In September and October 2017, the PTAB denied institution on these IPR requests filed by the Company.  In September 2017, the Company filed additional IPRs and the institution decisions are expected in March 2018.  

The case is ongoing and we cannot estimate what the potential outcome of these claims will be at this time.  Discovery is ongoing and the hearing on claim interpretation is scheduled for March 2018.  

The Company is unable to estimate the potential liability with respect to the legal matters noted above. There are numerous factors that make it difficult to meaningfully estimate possible loss or range of loss at this stage of the legal proceedings, including that the FCA Investigation and patent disputes with Thoratec and Maquet remain either in relatively early stages, or there are significant factual and legal issues to be resolved and information obtained or rulings made during any lawsuits or investigations that could affect the methodology for calculation.

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Segment and Enterprise Wide Disclosures

6 Months Ended

Sep. 30, 2017

Segment Reporting [Abstract]

Segment and Enterprise Wide Disclosures

Note 11. Segment and Enterprise Wide Disclosures

The Company operates in one business segment—the research, development and sale of medical devices to assist or replace the pumping function of the failing heart. The Company’s chief operating decision maker (determined to be the Chief Executive Officer) does not manage any part of the Company separately, and the allocation of resources and assessment of performance are based on the Company’s consolidated operating results. International sales (sales outside the U.S. and primarily in Europe) accounted for 11% and 10% of total product revenue for each of the three and six months ended September 30, 2017, respectively, and 9% of total product revenue for each of the three and six months ended September 30, 2016, respectively. Most of the Company’s long-lived assets are located in the U.S. except for $28.9 million and $23.2 million at September 30, 2017 and March 31, 2017, respectively, which are located primarily in Germany.

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Basis of Preparation and Summary of Significant Accounting Policies (Policies)

6 Months Ended

Sep. 30, 2017

Accounting Policies [Abstract]

New Accounting Pronouncements Adopted

New Accounting Pronouncements Adopted

Effective April 1, 2017, the Company adopted the Financial Accounting Standards Board (“FASB”) standard update ASU 2016-09, “Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting” (“ASU 2016-09”) which simplifies several aspects of the accounting for share-based payment transactions, including income tax consequences, recognition of stock compensation award forfeitures, classification of awards as either equity or liabilities, the calculation of diluted shares outstanding and classification on the statement of cash flows.

The following table summarizes the most significant impacts of ASU 2016-09 for the three and six months ended September 30, 2017:

Description of Change:	Impact of Change Upon Adoption on April 1, 2017 and for the Three and Six Months Ended September 30, 2017:	Adoption Method:
The new standard eliminates the requirement that excess tax benefits be realized through a reduction in income taxes payable before a company can recognize them in the statement of operations.	As a result, on April 1, 2017, the Company recorded a cumulative-effect adjustment to increase retained earnings and deferred tax assets by $76.4 million for excess tax benefits not previously recognized.	Modified-retrospective (required)
Excess tax benefits related to restricted stock unit vestings or stock option exercises are recorded through the statement of operations.	The income tax benefit for the three and six months ended September 30, 2017, included excess tax benefits of $4.5 million and $21.3 million, respectively. These recognized excess tax benefits resulted from restricted stock units that vested or stock options that were exercised during the three and six months ended September 30, 2017.	Prospective (required)
Excess tax benefits related to restricted stock unit vestings or stock option exercises are classified as operating cash flows instead of financing cash flows.	Increase in cash flow from operating activities and decrease in cash flow from financing activities by approximately $21.3 million for the six months ended September 30, 2017. The statement of cash flows for the prior period has not been adjusted.	Prospective (elected)
Calculation of diluted weighted average shares outstanding under the treasury method no longer assume that tax benefits related to stock-based awards are used to repurchase common stock.	The Company excluded the related tax benefits when applying the treasury stock method for computing diluted shares outstanding on a prospective basis as required by  ASU 2016-09.	Prospective (required)
An accounting policy election can be made to reduce stock-based compensation expense for forfeitures as they occur instead of estimating forfeitures that are expected to occur.	The Company made an accounting policy election to account for forfeitures as they occur with the change applied on a modified retrospective basis with a cumulative effect adjustment on April 1, 2017 to increase additional paid-in capital by $1.8 million, increase deferred tax assets by $0.7 million and decrease retained earnings by $1.1 million. The Company elected to make this accounting policy change to simplify the accounting for stock-based compensation and believes this method provides a more accurate reflection of periodic stock based compensation cost. Prior to the adoption of this accounting standard, the Company estimated at grant the likelihood that the award would ultimately vest, and revised the estimate, if necessary, in future periods if the actual forfeiture rate differed.	Modified-retrospective (elected)
Cash payments to tax authorities for shares withheld to meet employee tax withholding requirements on restricted stock units are classified as financing cash flow instead of operating cash flow.	No change since the Company has historically presented these amounts as a financing activity. Prior to ASU 2016-09, U.S. GAAP has not specified how these types of transactions should be classified in the statement of cash flows.	N/A

See table below for the changes in beginning stockholders' equity as a result of this implementation.

	Common Stock					Treasury Stock
	Number of shares			Par value		Number of shares			Amount				Additional Paid in Capital			Accumulated Deficit				Accumulated Other Comprehensive Income (Loss)				Total Stockholders' Equity
Balance, March 31, 2017		43,673,286	$		437		1,575,995	$		(46,763	)	$		565,962	$		(46,959	)	$		(20,606	)	$		452,071
Cumulative effect of adoption of new accounting standard														1,835			75,246								77,081
Balance, April 1, 2017		43,673,286	$		437		1,575,995	$		(46,763	)	$		567,797	$		28,287		$		(20,606	)	$		529,152

Recent Accounting Pronouncements

Recent Accounting Pronouncements

In May 2014, the FASB issued ASU 2014-09,Revenue from Contracts with Customersto provide updated guidance on revenue recognition. This new standard will replace most of the existing revenue recognition guidance in U.S. GAAP when it becomes effective and permits the use of either the retrospective or cumulative effect transition method. ASU 2014-09 requires a company to recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. In doing so, companies may need to use more judgment and make more estimates than under the current accounting guidance. These may include identifying performance obligations in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the transaction price to each separate performance obligation. The guidance also requires expanded disclosures relating to the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. Additionally, qualitative and quantitative disclosures are required about customer contracts, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. The Company is assessing all of the potential impacts of the revenue recognition guidance. Although the Company has not yet completed its assessment of the new revenue recognition guidance, the Company believes that the new revenue recognition guidance generally supports the recognition of revenue at a point-in-time for product sales and over an extended period of time for preventative maintenance service agreements, which is consistent with its current revenue recognition model. The Company does anticipate that the new revenue standard will result in expanded financial statement disclosures relating to the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The Company is reviewing its internal controls and processes over revenue recognition in order to prepare for the adoption of and ongoing accounting under the new standard. As the Company completes its evaluation of this new accounting standard, new information may arise that could change the Company’s current understanding of the impact to revenue and expense recognized and financial statement disclosures. Additionally, the Company will continue to monitor industry activities and any additional guidance provided by regulators, standards setters, or the accounting profession and adjust the Company’s assessment and implementation plans accordingly, if required. ASU 2014-09 will become effective for the Company beginning in fiscal 2019.

In January 2016, the FASB issued ASU 2016-01, Recognition and Measurement of Financial Assets and Financial Liabilities.  This guidance changes accounting for financial assets and financial liabilities under the fair value option and includes additional presentation and disclosure requirements for financial instruments. ASU 2016-01 requires financial assets to be measured at fair value with changes in fair value recognized in the statement of operations. The ASU eliminates the available-for-sale classification for marketable securities in which changes in fair value are currently recorded as a component of other comprehensive income. ASU 2016-01 is effective for annual reporting periods beginning after December 15, 2017, with early adoption permitted with specific application guidance. The Company is currently in the process determining the impact of the ASU 2016-01 amendment on its consolidated financial statements. ASU 2016-01 will become effective for the Company beginning in fiscal 2019.

In February 2016, the FASB issued ASU 2016-02, Leases. This guidance requires an entity to recognize lease liabilities and a right-of-use asset for all leases on the balance sheet and to disclose key information about the entity's leasing arrangements. ASU 2016-02 is effective for annual reporting periods beginning after December 15, 2018, including interim periods within that reporting period, with earlier adoption permitted. ASU 2016-02 must be adopted using a modified retrospective approach for all leases existing at, or entered into after the date of initial adoption, with an option to elect to use certain transition relief. The Company is currently in the process of evaluating its lessee arrangements to determine the impact of ASU 2016-02 amendment on its consolidated financial statements. This evaluation includes a review of the Company’s existing leasing arrangements on its facilities. ASU 2016-02 will become effective for the Company beginning in fiscal 2020.

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Basis of Preparation and Summary of Significant Accounting Policies (Tables)

6 Months Ended

Sep. 30, 2017

Accounting Policies [Abstract]

Schedule of Changes in Beginning Stockholders' Equity

See table below for the changes in beginning stockholders' equity as a result of this implementation.

	Common Stock					Treasury Stock
	Number of shares			Par value		Number of shares			Amount				Additional Paid in Capital			Accumulated Deficit				Accumulated Other Comprehensive Income (Loss)				Total Stockholders' Equity
Balance, March 31, 2017		43,673,286	$		437		1,575,995	$		(46,763	)	$		565,962	$		(46,959	)	$		(20,606	)	$		452,071
Cumulative effect of adoption of new accounting standard														1,835			75,246								77,081
Balance, April 1, 2017		43,673,286	$		437		1,575,995	$		(46,763	)	$		567,797	$		28,287		$		(20,606	)	$		529,152

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Net Income Per Share (Tables)

6 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Income Per Share

The Company’s basic and diluted net income per share for the three and six months ended September 30, 2017 and 2016 were as follows (in thousands, except per share data):

	For the Three Months Ended September 30,				For the Six Months Ended September 30,
	2017		2016		2017		2016
Basic Net Income Per Share
Net income	$	24,503	$	8,875	$	61,877	$	21,785
Weighted average shares used in computing basic net    income per share		44,141		43,129		44,018		42,971
Net income per share - basic	$	0.56	$	0.21	$	1.41	$	0.51

	For the Three Months Ended September 30,				For the Six Months Ended September 30,
	2017		2016		2017		2016
Diluted Net Income Per Share
Net income	$	24,503	$	8,875	$	61,877	$	21,785
Weighted average shares used in computing basic net    income per share		44,141		43,129		44,018		42,971
Effect of dilutive securities		1,557		1,451		1,637		1,522
Weighted average shares used in computing diluted    net income per share		45,698		44,580		45,655		44,493
Net income per share - diluted	$	0.54	$	0.20	$	1.36	$	0.49

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Marketable Securities and Fair Value Measurements (Tables)

6 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

Marketable Securities

The Company’s marketable securities at September 30, 2017 and March 31, 2017 are invested in the following:

	Amortized		Gross Unrealized		Gross Unrealized			Fair Market
	Cost		Gains		Losses			Value
	(in $000's)
September 30, 2017:
Short-term U.S. Treasury mutual fund securities	$	36,178	$	—	$	(9	)	$	36,169
Short-term government-backed securities		124,654		—		(87	)		124,567
Short-term corporate debt securities		57,955		2		(32	)		57,925
Long-term government-backed securities		48,186		—		(61	)		48,125
Long-term corporate debt securities		7,835		—		(6	)		7,829
	$	274,808	$	2	$	(195	)	$	274,615

	Amortized		Gross Unrealized		Gross Unrealized			Fair Market
	Cost		Gains		Losses			Value
	(in $000's)
March 31, 2017
Short-term U.S. Treasury mutual fund securities	$	45,199	$	—	$	(13	)	$	45,186
Short-term government-backed securities		90,199		1		(87	)		90,113
Short-term corporate debt securities		55,465		—		(31	)		55,434
Long-term U.S. Treasury mutual fund securities		1,998		—		(3	)		1,995
Long-term government-backed securities		43,484		5		(18	)		43,471
Long-term corporate debt securities		1,853		—		(1	)		1,852
	$	238,198	$	6	$	(153	)	$	238,051

Financial Instruments Recorded at Fair Value

The following table presents the Company’s financial instruments recorded at fair value in the condensed consolidated balance sheets, classified according to the three categories described above:

	Level 1		Level 2		Level 3		Total
September 30, 2017:	(in $000's)
Assets
Short-term U.S. Treasury mutual fund securities	$	—	$	36,169	$	—	$	36,169
Short-term government-backed securities		—		124,567		—		124,567
Short-term corporate debt securities		—		57,925		—		57,925
Long-term government-backed securities		—		48,125		—		48,125
Long-term corporate debt securities		—		7,829		—		7,829
Liabilities
Contingent consideration		—		—		9,835		9,835

	Level 1		Level 2		Level 3		Total
March 31, 2017:	(in $000's)
Assets
Short-term U.S. Treasury mutual fund securities	$	—	$	45,186	$	—	$	45,186
Short-term government-backed securities		—		90,113		—		90,113
Short-term corporate debt securities		—		55,434		—		55,434
Long-term U.S. Treasury mutual fund securities		—		1,995		—		1,995
Long-term government-backed securities		—		43,471		—		43,471
Long-term corporate debt securities		—		1,852		—		1,852
Liabilities
Contingent consideration		—		—		9,153		9,153

Valuation Method Used to Calculate Level 3 Liabilities Measured at Estimated Fair Value of Contingent Consideration Related to Acquisition

This liability is reported as Level 3 as the estimated fair value of the contingent consideration related to the acquisition of the ECP requires significant management judgment or estimation and is calculated using the following valuation methods:

	Fair Value at				Weighted Average
	September 30, 2017			Significant	(range, if
	(in $000's)		Valuation Methodology	Unobservable Input	applicable)
Clinical and regulatory milestone	$	5,660	Probability weighted income approach	Projected fiscal year of milestone payments	2019 to 2022
				Discount rate	2.6% to 3.1%
				Probability of occurrence	Probability adjusted level of 40% for the base case scenario and 0% to 28% for various upside and downside scenarios
Revenue-based milestone		4,175	Monte Carlo simulation model	Projected fiscal year of milestone payments	2023 to 2035
				Discount rate		18%
				Expected volatility for forecasted revenues		50%
	$	9,835

Change in Fair Value of Contingent Consideration as Determined by Level 3 Inputs

The following table summarizes the change in fair value, as determined by Level 3 inputs, of the contingent consideration for the three and six months ended September 30, 2017 and 2016:

	For the Three Months Ended September 30,				For the Six Months Ended September 30,
		2017		2016		2017		2016
	(in $000's)				(in $000's)
Level 3 liabilities, beginning balance	$	9,418	$	7,739	$	9,153	$	7,563
Additions		—		—		—		—
Payments		—		—		—		—
Change in fair value		417		10		682		186
Level 3 liabilities, ending balance	$	9,835	$	7,749	$	9,835	$	7,749

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Property and Equipment (Tables)

6 Months Ended

Sep. 30, 2017

Property Plant And Equipment [Abstract]

Components of Property and Equipment

The components of property and equipment are as follows:

	September 30, 2017			March 31, 2017
Land	$	4,474		$	4,046
Building and building improvements		13,669			10,900
Capital lease asset		16,784			16,784
Leasehold improvements		37,292			34,854
Machinery and equipment		33,677			27,989
Furniture and fixtures		7,578			3,899
Construction in progress		10,458			9,257
Total cost		123,932			107,729
Less accumulated depreciation		(26,235	)		(19,952	)
	$	97,697		$	87,777

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Goodwill and In-Process Research and Development (Tables)

6 Months Ended

Sep. 30, 2017

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill Activity

The goodwill activity is as follows:

	(in $000's)
Balance at March 31, 2017	$	31,045
Foreign currency translation impact		3,287
Balance at September 30, 2017	$	34,332

Carrying value of In-Process Research and Development

The carrying value of the Company’s IPR&D assets and the change in the balance for the six months ended September 30, 2017 are as follows:

	(in $000's)
Balance at March 31, 2017	$	14,482
Foreign currency translation impact		1,534
Balance at September 30, 2017	$	16,016

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Accrued Expenses (Tables)

6 Months Ended

Sep. 30, 2017

Payables And Accruals [Abstract]

Accrued Expenses

Accrued expenses consist of the following:

	September 30, 2017		March 31, 2017
	(in $000's)
Employee compensation	$	21,643	$	23,290
Sales and income taxes		4,175		3,180
Professional, legal and accounting fees		3,178		2,019
Research and development		2,099		2,349
Marketing		1,452		1,827
Warranty		954		717
Accrued capital expenditures		—		2,300
Other		1,755		2,021
	$	35,256	$	37,703

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Stock-Based Compensation (Tables)

6 Months Ended

Sep. 30, 2017

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation Recognized

The following table summarizes stock-based compensation expense by financial statement line item in the Company’s condensed consolidated statements of operations for the three and six months ended September 30, 2017 and 2016:

	For the Three Months Ended September 30,				For the Six Months Ended September 30,
		2017		2016		2017		2016
	(in $000's)				(in $000's)
Cost of product revenue	$	372	$	221	$	731	$	520
Research and development		1,205		2,638		2,544		3,893
Selling, general and administrative		7,705		6,791		14,663		13,634
	$	9,282	$	9,650	$	17,938	$	18,047

Summary of Stock Option Activity

The following table summarizes the stock option activity for the six months ended September 30, 2017:

						Weighted
				Weighted		Average		Aggregate
				Average		Remaining		Intrinsic
	Options			Exercise		Contractual		Value
	(in thousands)			Price		Term (years)		(in thousands)
Outstanding at beginning of period		1,646		$	32.09		5.46
Granted		145			137.70
Exercised		(305	)		17.25
Cancelled and expired		(51	)		100.48
Outstanding at end of period		1,435		$	43.47		5.56	$	179,543
Exercisable at end of period		1,098		$	24.23		4.57	$	158,474
Options vested and expected to vest at end of period		1,405		$	42.84		5.51	$	176,658

Summary of Weighted Average Grant-Date Fair Values And Weighted Average Assumptions Used to Calculate Fair Value of Options Granted

The weighted average grant-date fair values and weighted average assumptions used in the calculation of fair value of options granted during the three and six months ended September 30, 2017 and 2016 was as follows:

	For the Three Months Ended September 30,						For the Six Months Ended September 30,
		2017			2016			2017			2016
Weighted average grant-date fair value	$	57.38		$	46.50		$	50.26		$	41.60
Valuation assumptions:
Risk-free interest rate		1.88	%		1.11	%		1.85	%		1.32	%
Expected option life (years)		4.06			4.14			4.07			4.13
Expected volatility		43.4	%		49.0	%		43.6	%		49.6	%

Summary of Restricted Stock Units Activity

The following table summarizes activity of restricted stock units for the six months ended September 30, 2017:

	Number of Shares			Weighted Average Grant Date Fair Value
	(in thousands)			(per share)
Restricted stock units at beginning of period		1,056		$	80.50
Granted		291		$	136.17
Vested		(355	)	$	52.84
Forfeited		(90	)	$	97.51
Restricted stock units at end of period		902		$	107.71

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Income Taxes (Tables)

6 Months Ended

Sep. 30, 2017

Income Tax Disclosure [Abstract]

Differences Between Statutory Income Tax Rate and Effective Income Tax Rate

The significant differences between the statutory income tax rate and effective income tax rate for the three and six months ended September 30, 2017 and 2016 were as follows:

	For the Three Months Ended September 30,							For the Six Months Ended September 30,
		2017			2016				2017			2016
Statutory income tax rate		35.0		%	35.0		%		35.0		%	35.0		%
Increase resulting from:
Excess tax benefits from stock-based awards		(13.7	)		—				(32.1	)		—
Credits		(1.2	)		(1.3	)			(1.2	)		(1.3	)
State taxes, net		3.5			3.4				3.5			3.3
Permanent differences		1.8			2.7				1.8			2.8
Other		(0.8	)		—				(0.4	)		—
Effective tax rate		24.6		%	39.8		%		6.6		%	39.8		%

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Commitments and Contingencies (Tables)

6 Months Ended

Sep. 30, 2017

Commitments And Contingencies Disclosure [Abstract]

Summary of Future Lease Commitments Related to Capital Lease Obligation

A summary of future lease commitments related to the capital lease obligation is as follows:

	Capital Lease
	(in $000s)
Fiscal 2018, remaining portion	$	675
Fiscal 2019		1,349
Fiscal 2020		1,349
Fiscal 2021		1,373
Fiscal 2022		1,390
Thereafter		13,747
Total minimum lease payments		19,883
Less amounts representing interest		(3,922	)
Total capital lease obligation	$	15,961
Less current capital lease obligation		(851	)
Capital lease obligation, net of current portion	$	15,110

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Basis of Preparation and Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Sep. 30, 2017	Sep. 30, 2017	Sep. 30, 2016	Apr. 01, 2017
Summary Of Significant Accounting Policy [Line Items]
Cumulative effect to increase retained earnings and deferred tax assets				$ 77,081
Excess tax benefits related to restricted stock unit vestings or stock option exercises, decrease in financing activities			$ 3,631
Excess tax benefits related to restricted stock unit vestings or stock option exercises, increase in operating activities			$ 3,631
ASU 2016-09
Summary Of Significant Accounting Policy [Line Items]
Excess tax benefit	$ 4,500	$ 21,300
Excess tax benefits related to restricted stock unit vestings or stock option exercises, decrease in financing activities		21,300
Excess tax benefits related to restricted stock unit vestings or stock option exercises, increase in operating activities		$ 21,300
Increase additional paid in capital				1,800
Increase deferred tax assets				700
Decrease retained earnings				(1,100)
Adjustment to Increase Retained Earnings and Deferred Tax Assets | ASU 2016-09
Summary Of Significant Accounting Policy [Line Items]
Cumulative effect to increase retained earnings and deferred tax assets				$ 76,400

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Schedule of Changes in Beginning Stockholders' Equity (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Apr. 01, 2017	Mar. 31, 2017
Balance	$ 604,886	$ 529,152	$ 452,071
Common stock, Outstanding	44,200,784		43,673,286
Cumulative effect to increase retained earnings and deferred tax assets		77,081
Common Stock
Balance		$ 437	$ 437
Common stock, Outstanding		43,673,286	43,673,286
Treasury Stock
Balance		$ (46,763)	$ (46,763)
Common stock, Outstanding		1,575,995	1,575,995
Additional Paid in Capital
Balance		$ 567,797	$ 565,962
Cumulative effect to increase retained earnings and deferred tax assets		1,835
Accumulated Deficit
Balance		28,287	(46,959)
Cumulative effect to increase retained earnings and deferred tax assets		75,246
Accumulated Other Comprehensive Income (Loss)
Balance		$ (20,606)	$ (20,606)

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Computation of Basic and Diluted Net Income Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Basic Net Income Per Share
Net income	$ 24,503	$ 8,875	$ 61,877	$ 21,785
Weighted average shares used in computing basic net income per share	44,141	43,129	44,018	42,971
Net income per share - basic	$ 0.56	$ 0.21	$ 1.41	$ 0.51
Diluted Net Income Per Share
Net income	$ 24,503	$ 8,875	$ 61,877	$ 21,785
Weighted average shares used in computing basic net income per share	44,141	43,129	44,018	42,971
Effect of dilutive securities	1,557	1,451	1,637	1,522
Weighted average shares used in computing diluted net income per share	45,698	44,580	45,655	44,493
Net income per share - diluted	$ 0.54	$ 0.20	$ 1.36	$ 0.49

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Net Income Per Share - Additional Information (Detail) - shares	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the calculation of diluted weighted average shares outstanding	200	1,500	5,700	8,800
Restricted Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from the calculation of diluted weighted average shares outstanding	77,000	186,000	77,000	186,000

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Investable Marketable Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Mar. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	$ 274,808	$ 238,198
Gross Unrealized Gains	2	6
Gross Unrealized Losses	(195)	(153)
Fair Market Value	274,615	238,051
U.S. Treasury mutual fund securities | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	36,178	45,199
Gross Unrealized Losses	(9)	(13)
Fair Market Value	36,169	45,186
U.S. Treasury mutual fund securities | Long-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost		1,998
Gross Unrealized Losses		(3)
Fair Market Value		1,995
Government-backed securities | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	124,654	90,199
Gross Unrealized Gains		1
Gross Unrealized Losses	(87)	(87)
Fair Market Value	124,567	90,113
Government-backed securities | Long-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	48,186	43,484
Gross Unrealized Gains		5
Gross Unrealized Losses	(61)	(18)
Fair Market Value	48,125	43,471
Corporate Debt Securities | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	57,955	55,465
Gross Unrealized Gains	2
Gross Unrealized Losses	(32)	(31)
Fair Market Value	57,925	55,434
Corporate Debt Securities | Long-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	7,835	1,853
Gross Unrealized Losses	(6)	(1)
Fair Market Value	$ 7,829	$ 1,852

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Financial Instruments Recorded at Fair Value (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Mar. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	$ 274,615	$ 238,051
Contingent consideration	9,835	9,153
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	9,835	9,153
U.S. Treasury mutual fund securities | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	36,169	45,186
U.S. Treasury mutual fund securities | Long-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure		1,995
U.S. Treasury mutual fund securities | Level 2 | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	36,169	45,186
U.S. Treasury mutual fund securities | Level 2 | Long-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure		1,995
Government-backed securities | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	124,567	90,113
Government-backed securities | Long-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	48,125	43,471
Government-backed securities | Level 2 | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	124,567	90,113
Government-backed securities | Level 2 | Long-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	48,125	43,471
Corporate Debt Securities | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	57,925	55,434
Corporate Debt Securities | Long-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	7,829	1,852
Corporate Debt Securities | Level 2 | Short-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	57,925	55,434
Corporate Debt Securities | Level 2 | Long-term Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities, fair value disclosure	$ 7,829	$ 1,852

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Marketable Securities and Fair Value Measurements - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended		6 Months Ended
	Jul. 31, 2017	Jul. 31, 2014	Sep. 30, 2017	Mar. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate carrying amount of other investments			$ 12,600	$ 7,200
Additional investment in private medical device company	$ 6,000		$ 6,400
ECP Entwicklungsgesellschaft mbH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Payments to acquire businesses, cash paid		$ 13,000
Potential payouts payments		$ 15,000

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Valuation Method Used to Calculate Level 3 Liabilities Measured at Estimated Fair Value of Contingent Consideration Related to Acquisition (Detail) - USD ($) $ in Thousands	1 Months Ended	6 Months Ended
	Jul. 31, 2014	Sep. 30, 2017	Mar. 31, 2017
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Contingent consideration		$ 9,835	$ 9,153
ECP Entwicklungsgesellschaft mbH
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate	21.50%
Level 3
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Contingent consideration		9,835	$ 9,153
Level 3 | ECP Entwicklungsgesellschaft mbH
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Contingent consideration		9,835
Level 3 | ECP Entwicklungsgesellschaft mbH | Probability weighted income approach | Clinical and regulatory milestone
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Contingent consideration		$ 5,660
Level 3 | ECP Entwicklungsgesellschaft mbH | Probability weighted income approach | Clinical and regulatory milestone | Base Case Scenario | Contingent Consideration
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Probability of occurrence		40.00%
Level 3 | ECP Entwicklungsgesellschaft mbH | Probability weighted income approach | Clinical and regulatory milestone | Minimum | Contingent Consideration
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Projected fiscal year of milestone payments		2019
Discount rate		2.60%
Level 3 | ECP Entwicklungsgesellschaft mbH | Probability weighted income approach | Clinical and regulatory milestone | Minimum | Various Upside and Downside Scenarios | Contingent Consideration
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Probability of occurrence		0.00%
Level 3 | ECP Entwicklungsgesellschaft mbH | Probability weighted income approach | Clinical and regulatory milestone | Maximum | Contingent Consideration
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Projected fiscal year of milestone payments		2022
Discount rate		3.10%
Level 3 | ECP Entwicklungsgesellschaft mbH | Probability weighted income approach | Clinical and regulatory milestone | Maximum | Various Upside and Downside Scenarios | Contingent Consideration
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Probability of occurrence		28.00%
Level 3 | ECP Entwicklungsgesellschaft mbH | Monte Carlo simulation model | Revenue-based milestone
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Contingent consideration		$ 4,175
Level 3 | ECP Entwicklungsgesellschaft mbH | Monte Carlo simulation model | Revenue-based milestone | Contingent Consideration
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Discount rate		18.00%
Expected volatility for forecasted revenues		50.00%
Level 3 | ECP Entwicklungsgesellschaft mbH | Monte Carlo simulation model | Revenue-based milestone | Minimum | Contingent Consideration
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Projected fiscal year of milestone payments		2023
Level 3 | ECP Entwicklungsgesellschaft mbH | Monte Carlo simulation model | Revenue-based milestone | Maximum | Contingent Consideration
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]
Projected fiscal year of milestone payments		2035

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Change in Fair Value of Contingent Consideration as Determined by Level 3 Inputs (Detail) - Contingent Consideration - ECP Entwicklungsgesellschaft mbH - Level 3 - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Level 3 liabilities, beginning balance	$ 9,418	$ 7,739	$ 9,153	$ 7,563
Additions	0	0	0	0
Payments	0	0	0	0
Change in fair value	417	10	682	186
Level 3 liabilities, ending balance	$ 9,835	$ 7,749	$ 9,835	$ 7,749

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Components of Property and Equipment (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Mar. 31, 2017
Property Plant And Equipment [Abstract]
Land	$ 4,474	$ 4,046
Building and building improvements	13,669	10,900
Capital lease asset	16,784	16,784
Leasehold improvements	37,292	34,854
Machinery and equipment	33,677	27,989
Furniture and fixtures	7,578	3,899
Construction in progress	10,458	9,257
Total cost	123,932	107,729
Less accumulated depreciation	(26,235)	(19,952)
Property and equipment, net	$ 97,697	$ 87,777

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Property and Equipment - Additional Information (Detail) $ in Thousands		1 Months Ended		6 Months Ended
	Oct. 30, 2017 USD ($)	Feb. 28, 2017 USD ($)	Aug. 31, 2016 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 ft²
Property Plant And Equipment [Line Items]
Property and equipment				$ 123,932		$ 107,729
Acquisition cost for property and equipment				$ 17,675	$ 10,453
Europe
Property Plant And Equipment [Line Items]
Acquisition cost for property and equipment		$ 12,600
Lease Agreements | Europe
Property Plant And Equipment [Line Items]
Office space under lease | ft²							33,000
Lease Agreements | Subsequent Event
Property Plant And Equipment [Line Items]
Headquarters acquisition	$ 16,500
Capital lease assets
Property Plant And Equipment [Line Items]
Property and equipment			$ 16,800
Capital lease asset, useful life			15 years
Land | Europe
Property Plant And Equipment [Line Items]
Acquisition cost for property and equipment		4,000
Building and Building Improvements | Europe
Property Plant And Equipment [Line Items]
Acquisition cost for property and equipment		$ 8,600

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Goodwill and In-Process Research and Development - Additional Information (Detail) - USD ($)	1 Months Ended
	Jul. 31, 2014	Sep. 30, 2017	Mar. 31, 2017
Goodwill [Line Items]
Goodwill		$ 34,332,000	$ 31,045,000
Accumulated impairment loss, goodwill		0
In-process research and development		16,016,000	14,482,000
ECP Entwicklungsgesellschaft mbH
Goodwill [Line Items]
In-process research and development		$ 16,000,000	$ 14,500,000
Fair value inputs, discount rate	21.50%

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Goodwill Activity (Detail) $ in Thousands	6 Months Ended
	Sep. 30, 2017 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Beginning balance	$ 31,045
Foreign currency translation impact	3,287
Ending balance	$ 34,332

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Carrying value of In-Process Research and Development (Detail) $ in Thousands	6 Months Ended
	Sep. 30, 2017 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Beginning balance	$ 14,482
Foreign currency translation impact	1,534
Ending balance	$ 16,016

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Accrued Expenses (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Mar. 31, 2017
Payables and Accruals [Abstract]
Employee compensation	$ 21,643	$ 23,290
Sales and income taxes	4,175	3,180
Professional, legal and accounting fees	3,178	2,019
Research and development	2,099	2,349
Marketing	1,452	1,827
Warranty	954	717
Accrued capital expenditures		2,300
Other	1,755	2,021
Accrued expenses	$ 35,256	$ 37,703

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Stock-Based Compensation Recognized (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$ 9,282	$ 9,650	$ 17,938	$ 18,047
Cost of product revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	372	221	731	520
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	1,205	2,638	2,544	3,893
Selling, general and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation	$ 7,705	$ 6,791	$ 14,663	$ 13,634

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Summary of Stock Option Activity (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended	12 Months Ended
	Sep. 30, 2017	Mar. 31, 2017
Options
Outstanding at beginning of period	1,646
Granted	145
Exercised	(305)
Cancelled and expired	(51)
Outstanding at end of period	1,435	1,646
Exercisable at end of period	1,098
Options vested and expected to vest at end of period	1,405
Weighted-Average Exercise Price
Outstanding at beginning of period	$ 32.09
Granted	137.70
Exercised	17.25
Cancelled and expired	100.48
Outstanding at end of period	43.47	$ 32.09
Exercisable at end of period	24.23
Options vested and expected to vest at end of period	$ 42.84
Weighted-Average Remaining Contractual Term (years)
Outstanding	5 years 6 months 22 days	5 years 5 months 16 days
Exercisable at end of period	4 years 6 months 25 days
Options vested and expected to vest at end of period	5 years 6 months 4 days
Aggregate Intrinsic Value
Outstanding at end of period	$ 179,543
Exercisable at end of period	158,474
Options vested and expected to vest at end of period	$ 176,658

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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	6 Months Ended
	May 31, 2017	Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value of options exercised in period		$ 36.5
Fair value of options vested in period		4.4
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense		$ 11.6
Unrecognized stock-based compensation expense, weighted-average recognition period		2 years 6 months
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense		$ 44.6
Unrecognized stock-based compensation expense, weighted-average recognition period		2 years 1 month 6 days
Restricted share unit issued		291,000
Performance Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted share unit issued	159,000

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Summary of Weighted Average Grant-Date Fair Values And Weighted Average Assumptions Used to Calculate Fair Value of Options Granted (Detail) - Stock Options - $ / shares	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant-date fair value	$ 57.38	$ 46.50	$ 50.26	$ 41.60
Valuation assumptions:
Risk-free interest rate	1.88%	1.11%	1.85%	1.32%
Expected option life (years)	4 years 22 days	4 years 1 month 21 days	4 years 26 days	4 years 1 month 17 days
Expected volatility	43.40%	49.00%	43.60%	49.60%

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Summary of Restricted Stock Units Activity (Detail) - Restricted Stock Units shares in Thousands	6 Months Ended
	Sep. 30, 2017 $ / shares shares
Number of Shares
Beginning Balance | shares	1,056
Granted | shares	291
Vested | shares	(355)
Forfeited | shares	(90)
Ending Balance | shares	902
Weighted Average Grant Date Fair Value
Beginning Balance | $ / shares	$ 80.50
Granted | $ / shares	136.17
Vested | $ / shares	52.84
Forfeited | $ / shares	97.51
Ending Balance | $ / shares	$ 107.71

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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Apr. 01, 2017
Income Taxes [Line Items]
Income tax provision	$ 7,981	$ 5,861	$ 4,399	$ 14,376
Cumulative effect to increase retained earnings and deferred tax assets					$ 77,081
ASU 2016-09
Income Taxes [Line Items]
Excess tax benefits from stock-based awards	$ 4,500		$ 21,300
ASU 2016-09 | Adjustment to Increase Retained Earnings and Deferred Tax Assets
Income Taxes [Line Items]
Cumulative effect to increase retained earnings and deferred tax assets					$ 76,400

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Differences Between Statutory Income Tax Rate and Effective Income Tax Rate (Detail)	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Statutory income tax rate	35.00%	35.00%	35.00%	35.00%
Excess tax benefits from stock-based awards	(13.70%)		(32.10%)
Credits	(1.20%)	(1.30%)	(1.20%)	(1.30%)
State taxes, net	3.50%	3.40%	3.50%	3.30%
Permanent differences	1.80%	2.70%	1.80%	2.80%
Other	(0.80%)		(0.40%)
Effective tax rate	24.60%	39.80%	6.60%	39.80%

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Commitments and Contingencies - Additional Information (Detail) $ in Millions		1 Months Ended						6 Months Ended
	Oct. 30, 2017 USD ($)	Feb. 28, 2017 USD ($)	Oct. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Aug. 31, 2016 ft²	May 31, 2016	Sep. 30, 2015 Patent	Sep. 30, 2017
Magnetic Clutch Patents
Commitments and Contingencies [Line Items]
Patents allegedly infringed upon, number | Patent							2
Patent One
Commitments and Contingencies [Line Items]
Patent expiration period						2020-09
Patent Two
Commitments and Contingencies [Line Items]
Patent expiration period						2020-12
Patent Three
Commitments and Contingencies [Line Items]
Patent expiration period						2021-10
Lease Agreements
Commitments and Contingencies [Line Items]
Office space under capital lease | ft²					163,560
Lease agreement termination date					Aug. 31, 2026
Capital lease term								15 years
Lease Agreements | Massachusetts
Commitments and Contingencies [Line Items]
Annual rent expense		$ 0.2
Lease expiration period		2022-07
Lease Agreements | Germany
Commitments and Contingencies [Line Items]
Annual rent expense				$ 0.3
Lease expiration period				2024-05
Lease commencement period				2017-05
Lease Agreements | Japan
Commitments and Contingencies [Line Items]
Annual rent expense			$ 0.9
Lease expiration period			2021-09
Lease Agreements | Subsequent Event
Commitments and Contingencies [Line Items]
Headquarters acquisition	$ 16.5

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Summary of Future Lease Commitments Related to Capital Lease Obligation (Detail) - USD ($) $ in Thousands	Sep. 30, 2017	Mar. 31, 2017
Leases [Abstract]
Fiscal 2018, remaining portion	$ 675
Fiscal 2019	1,349
Fiscal 2020	1,349
Fiscal 2021	1,373
Fiscal 2022	1,390
Thereafter	13,747
Total minimum lease payments	19,883
Less amounts representing interest	(3,922)
Total capital lease obligation	15,961
Less current capital lease obligation	(851)	$ (799)
Capital lease obligation, net of current portion	$ 15,110	$ 15,539

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Segment and Enterprise Wide Disclosures - Additional Information (Detail) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016	Sep. 30, 2017 USD ($) Segment	Sep. 30, 2016	Mar. 31, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of business segments | Segment			1
International
Segment Reporting Information [Line Items]
Long-lived assets | $	$ 28.9		$ 28.9		$ 23.2
Customer Concentration Risk | Product Revenue | International
Segment Reporting Information [Line Items]
Percentage of revenue accounted	11.00%	9.00%	10.00%	9.00%