Array 10-Q 9 May 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Mar. 31, 2014	Apr. 30, 2014
Document and Entity Information1 [Abstract]	'	'
Entity Registrant Name	'ARRAY BIOPHARMA INC	'
Entity Central Index Key	'0001100412	'
Current Fiscal Year End Date	'--06-30	'
Entity Filer Category	'Accelerated Filer	'
Document Type	'10-Q	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'
Amendment Flag	'false	'
Entity Current Reporting Status	'Yes	'
Entity Common Stock, Shares Outstanding	'	125,984,565

Balance_Sheets

Balance Sheets (USD $)	Mar. 31, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Current assets	'	'
Cash and cash equivalents	$52,178	$60,736
Marketable securities	57,714	47,505
Accounts receivable	4,433	9,595
Prepaid expenses and other current assets	3,743	3,473
Total current assets	118,068	121,309
Long-term assets	'	'
Marketable securities	593	465
Property and equipment, net	7,838	10,049
Other long-term assets	8,656	4,165
Total long-term assets	17,087	14,679
Total assets	135,155	135,988
Current liabilities	'	'
Accounts payable	7,020	5,396
Accrued outsourcing costs	8,036	5,576
Accrued compensation and benefits	7,221	9,481
Other accrued expenses	2,170	1,135
Co-development liability	11,967	10,990
Deferred rent	3,717	3,646
Deferred revenue	5,733	14,353
Total current liabilities	45,864	50,577
Long-term liabilities	'	'
Deferred rent	5,032	7,834
Deferred revenue	4,329	0
Long-term debt, net	102,675	99,021
Other long-term liabilities	593	465
Total long-term liabilities	112,629	107,320
Total liabilities	158,493	157,897
Commitments and contingencies	'	'
Stockholders' deficit	'	'
Preferred stock, $0.001 par value; 10,000,000 shares authorized, no shares issued and outstanding	0	0
Common stock, $0.001 par value; 220,000,000 shares authorized; 125,969,565 and 116,878,021 shares issued and outstanding as of March 31, 2014 and June 30, 2013, respectively	126	117
Additional Paid in Capital	626,843	571,270
Warrants	39,385	39,385
Accumulated other comprehensive income (loss)	7	-2
Accumulated deficit	-689,699	-632,679
Total stockholders' deficit	-23,338	-21,909
Total liabilities and stockholders' deficit	$135,155	$135,988

Balance_Sheets_Parenthetical

Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2014	Jun. 30, 2013
Statement of Financial Position [Abstract]	'	'
Common stock, par value (in dollars per share)	$0.00	$0.00
Common stock, shares authorized	220,000,000	220,000,000
Common stock, shares issued	125,969,565	116,878,021
Common stock, shares outstanding	125,969,565	116,878,021
Preferred stock, par value (in dollars per share)	$0.00	$0.00
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0

Statements_of_Operations_and_C

Statements of Operations and Comprehensive Loss (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Revenue	'	'	'	'
License and milestone revenue	$4,287	$6,848	$23,639	$33,340
Collaboration revenue	3,486	3,107	12,428	10,825
Total revenue	7,773	9,955	36,067	44,165
Operating expenses	'	'	'	'
Cost of partnered programs	10,756	8,624	34,524	23,072
Research and development for proprietary programs	14,131	15,105	35,322	42,580
General and administrative	5,405	5,001	16,056	14,390
Total operating expenses	30,292	28,730	85,902	80,042
Loss from operations	-22,519	-18,775	-49,835	-35,877
Other income (expense)	'	'	'	'
Interest income	22	18	61	42
Interest expense	-2,435	-2,837	-7,246	-8,456
Total other expense, net	-2,413	-2,819	-7,185	-8,414
Net loss	-24,932	-21,594	-57,020	-44,291
Change in unrealized gains and losses on marketable securities	7	0	9	3
Comprehensive loss	($24,925)	($21,594)	($57,011)	($44,288)
Weighted average shares outstanding b basic and diluted	125,471	116,665	122,277	104,806
Net loss per share b basic and diluted	($0.20)	($0.19)	($0.47)	($0.42)

Statement_of_Stockholders_Defi

Statement of Stockholders' Deficit (USD $)	Total	Common Stock	Additional Paid-in Capital	Warrants	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit
In Thousands, unless otherwise specified
Balance at Jun. 30, 2013	($21,909)	$117	$571,270	$39,385	($2)	($632,679)
Balance (in shares) at Jun. 30, 2013	'	116,878	'	'	'	'
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'	'
Issuance of common stock under stock option and employee stock purchase plans	3,417	1	3,416	'	'	'
Issuance of common stock under stock option and employee stock purchase plans (in shares)	'	1,045	'	'	'	'
Share-based compensation expense	3,080	'	3,080	'	'	'
Issuance of common stock, net of offering costs	49,115	8	49,107	'	'	'
Issuance of common stock, net of offering costs (in shares)	'	8,047	'	'	'	'
Offering costs for convertible senior notes, equity portion	-30	'	-30	'	'	'
Change in unrealized loss on marketable securities	9	'	'	'	9	'
Net loss	-57,020	'	'	'	'	-57,020
Balance at Mar. 31, 2014	($23,338)	$126	$626,843	$39,385	$7	($689,699)
Balance (in shares) at Mar. 31, 2014	'	125,970	'	'	'	'

Statements_of_Cash_Flows

Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities	'	'
Net loss	($57,020)	($44,291)
Adjustments to reconcile net loss to net cash used in operating activities:	'	'
Depreciation and amortization expense	3,576	3,350
Non-cash interest expense	3,899	3,266
Share-based compensation expense	3,080	2,385
Payment of employee bonus with stock	0	2,857
Non-cash license revenue	-4,500	0
Changes in operating assets and liabilities:	'	'
Accounts receivable	5,162	-2,489
Prepaid expenses and other assets	-449	-1,069
Accounts payable and other accrued expenses	2,659	1,085
Accrued outsourcing costs	2,460	-334
Accrued compensation and benefits	-2,260	143
Co-development liability	977	-2,184
Deferred rent	-2,731	-2,616
Deferred revenue	-4,291	-32,977
Other liabilities	-6	-110
Net cash used in operating activities	-49,444	-72,984
Cash flows from investing activities	'	'
Purchases of property and equipment	-1,365	-2,011
Purchases of marketable securities	-80,457	-73,447
Proceeds from sales and maturities of marketable securities	70,262	64,354
Net cash used in investing activities	-11,560	-11,104
Cash flows from financing activities	'	'
Payments of long-term debt principal	0	-150
Proceeds from the issuance of common stock	50,155	75,555
Proceeds from employee stock purchases and options exercised	3,417	1,539
Payment of debt issuance costs	-86	0
Payment of stock offering costs	-1,040	-4,657
Net cash provided by financing activities	52,446	72,287
Net decrease in cash and cash equivalents	-8,558	-11,801
Cash and cash equivalents at beginning of period	60,736	55,799
Cash and cash equivalents at end of period	52,178	43,998
Supplemental disclosure of cash flow information	'	'
Cash paid for interest	$2,246	$5,189

OVERVIEW_AND_BASIS_OF_PRESENTA

OVERVIEW AND BASIS OF PRESENTATION	9 Months Ended
	Mar. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
OVERVIEW AND BASIS OF PRESENTATION	'
	OVERVIEW AND BASIS OF PRESENTATION
	Organization
	Array BioPharma Inc. (also referred to as "Array," "we," "us," or "our"), incorporated in Delaware on February 6, 1998, is a biopharmaceutical company focused on the discovery, development and commercialization of targeted small molecule drugs to treat patients afflicted with cancer.
	Basis of Presentation
	The accompanying unaudited financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC") for interim reporting and, as permitted under those rules, do not include all of the disclosures required by U.S. generally accepted accounting principles ("U.S. GAAP") for complete financial statements. The unaudited financial statements reflect all normal and recurring adjustments that, in the opinion of management, are necessary to present fairly our financial position, results of operations and cash flows for the interim periods presented. Operating results for an interim period are not necessarily indicative of the results that may be expected for a full year.
	These unaudited financial statements should be read in conjunction with our audited financial statements and the notes thereto for the fiscal year ended June 30, 2013, included in our Annual Report on Form 10-K filed with the SEC, from which we derived our balance sheet data as of June 30, 2013.
	Use of Estimates
	The preparation of these financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses, and related disclosure of contingent assets and liabilities. We base our estimates on historical experience and on various other assumptions that we believe are reasonable under the circumstances. These estimates are the basis for our judgments about the carrying values of assets and liabilities, which in turn may impact our reported revenue and expenses. Our actual results could differ significantly from these estimates under different assumptions or conditions.
	We believe our financial statements are most significantly impacted by the following accounting estimates and judgments: (i) the identification of deliverables under partnerships and collaborations involving multiple elements and determining whether such deliverables are separable from other aspects of the contractual relationship; (ii) estimating the selling price of deliverables for the purpose of allocating arrangement consideration for revenue recognition; (iii) estimating the periods over which the allocated consideration for deliverables is recognized; (iv) estimating accrued outsourcing costs for clinical trials and preclinical testing; (v) determining the fair value of the debt component for our convertible senior notes exclusive of the conversion feature; and (vi) estimating the fair value of non-marketable equity received from licensing transactions.
	Liquidity
	We have incurred operating losses and an accumulated deficit as a result of ongoing research and development spending since inception. As of March 31, 2014, we had an accumulated deficit of $689.7 million. We had net losses of $24.9 million and $57.0 million for the three and nine months ended March 31, 2014, respectively, and net losses of $61.9 million, $23.6 million and $56.3 million for the fiscal years ended June 30, 2013, 2012 and 2011, respectively.
	We have historically funded our operations from up-front fees and license and milestone payments received under our drug partnerships, the sale of equity securities, and debt provided by convertible debt and other credit facilities. Management believes that our cash, cash equivalents and marketable securities as of March 31, 2014 will enable us to continue to fund operations in the normal course of business for at least the next 12 months. Until we can generate sufficient levels of cash from current operations, which we do not expect to achieve in the foreseeable future, and because sufficient funds may not be available to us when needed from existing partnerships, we expect that we will be required to continue to fund our operations in part through the sale of debt or equity securities and through licensing select programs that include up-front and/or milestone payments.
	Our ability to successfully raise sufficient funds through the sale of debt or equity securities or from debt financing from lenders when needed is subject to many risks and uncertainties and, even if we are successful, future equity issuances would result in dilution to our existing stockholders. We also may not successfully consummate new partnerships that provide for up-front fees or milestone payments, or we may not earn milestone payments under such partnerships when anticipated, or at all. Our ability to realize milestone or royalty payments under existing partnership agreements and to enter into new partnering arrangements that generate additional revenue through up-front fees and milestone or royalty payments is subject to a number of risks, many of which are beyond our control. For example, although following the recently announced transaction by Novartis to exchange certain assets with GlaxoSmithKline, Novartis has indicated that it will continue to honor its obligations under its License Agreement with Array for the development of binimetinib, including the three Phase 3 trials currently underway, there can be no assurance that development efforts, and any potential future milestone or royalty revenue, will not be affected by this transaction.
	In addition, our assessment of our future need for funding and our ability to continue to fund our operations is a forward-looking statement that is based on assumptions that may prove to be wrong and that involve substantial risks and uncertainties.
	If we are unable to generate enough revenue from our existing or new partnerships when needed or secure additional sources of funding, it may be necessary to significantly reduce the current rate of spending through further reductions in staff and delaying, scaling back, or stopping certain research and development programs, including more costly Phase 2 and Phase 3 clinical trials on our wholly-owned or co-development programs as these programs progress into later stage development. Insufficient liquidity may also require us to relinquish greater rights to product candidates at an earlier stage of development or on less favorable terms to us and our stockholders than we would otherwise choose in order to obtain up-front license fees needed to fund operations. These events could prevent us from successfully executing our operating plan and, in the future, could raise substantial doubt about our ability to continue as a going concern. Further, as discussed in Note 4 – Long-term Debt, if at any time our balance of total cash, cash equivalents and marketable securities at Comerica Bank and approved outside accounts falls below $22 million, we must maintain a balance of cash, cash equivalents and marketable securities at Comerica at least equivalent to the entire outstanding debt balance with Comerica, which is currently $14.6 million. We must also maintain a monthly liquidity ratio if we draw down on the revolving line of credit.
	Equity Investment
	From time to time, we may enter into collaboration and license agreements under which we receive an equity interest as consideration for all or a portion of up-front, license or other fees under the terms of the agreement. We report equity securities received from non-publicly traded companies in which we do not exercise a significant or controlling interest at cost in other long-term assets in the accompanying balance sheets. We monitor our investments for impairment at least annually, and consider events or changes in circumstances we know of that may have a significant adverse effect on the fair value. We make appropriate reductions in the carrying value if it is determined that an impairment has occurred, based primarily on the financial condition and near and long-term prospects of the issuer. We do not report the fair value of our equity investments because it is not practical to do so.
	In July 2013, Array entered into a collaboration agreement with Loxo Oncology, Inc. under which we received shares of non-voting preferred stock as consideration for licensing rights granted to Loxo. We estimated the fair value of these shares to be $4.5 million based on a valuation analysis prepared with the assistance of a third-party valuation firm. The full estimated value of $4.5 million is reflected as a long-term asset in our balance sheet as of March 31, 2014, and was recorded as license revenue in our statement of operations and comprehensive loss during the first quarter of fiscal 2014. Further discussion regarding assumptions and estimates related to the determination of the fair value of the shares and related revenue recognition can be found in Note 3 - Collaboration and License Agreements – Loxo Oncology, Inc.
	In addition, as of both March 31, 2014 and June 30, 2013, we held shares of preferred stock of VentiRx Pharmaceuticals, Inc. valued at $1.5 million that we received under a February 2007 collaboration and licensing agreement with VentiRx.
	Accrued Outsourcing Costs
	Substantial portions of our preclinical studies and clinical trials are performed by third-party laboratories, medical centers, contract research organizations and other vendors (collectively "CROs"). These CROs generally bill monthly or quarterly for services performed, or bill based upon milestone achievement. For preclinical studies, we accrue expenses based upon estimated percentage of work completed and the contract milestones remaining. For clinical studies, expenses are accrued based upon the number of patients enrolled and the duration of the study. We monitor patient enrollment, the progress of clinical studies and related activities to the extent possible through internal reviews of data reported to us by the CROs, correspondence with the CROs and clinical site visits. Our estimates depend on the timeliness and accuracy of the data provided by the CROs regarding the status of each program and total program spending. We periodically evaluate the estimates to determine if adjustments are necessary or appropriate based on information we receive.
	Convertible Senior Notes
	Our 3.00% convertible senior notes due 2020 are accounted for in accordance with Financial Accounting Standards Board ("FASB") Accounting Standards Codification (“ASC”) 470, Accounting for Convertible Debt Instruments That May be Settled in Cash upon Conversion (Including Partial Cash Settlement). ASC 470-20 requires the issuer of convertible debt that may be settled in shares or cash upon conversion at the issuer's option, such as our notes, to account for the liability (debt) and equity (conversion option) components separately. The value assigned to the debt component is the estimated fair value, as of the issuance date, of a similar debt instrument without the conversion option. The amount of the equity component (and resulting debt discount) is calculated by deducting the fair value of the liability component from the principal amount of the convertible debt instrument. The resulting debt discount is amortized as additional non-cash interest expense over the expected life of the notes utilizing the effective interest method. Although ASC 470 has no impact on our actual past or future cash flows, it requires us to record non-cash interest expense as the debt discount is amortized. For additional information, see Note 4 – Long-term Debt.
	Revenue Recognition
	We recognize revenue for the performance of services or the shipment of products when each of the following four criteria is met: (i) persuasive evidence of an arrangement exists; (ii) products are delivered or as services are rendered; (iii) the sales price is fixed or determinable; and (iv) collectability is reasonably assured.
	We follow ASC 605-25, Revenue Recognition – Multiple-Element Arrangements and ASC 808, Collaborative Arrangements, if applicable, to determine the recognition of revenue under our collaborative research, development and commercialization agreements. The terms of these agreements generally contain multiple elements, or deliverables, which may include (i) grants of licenses, or options to obtain licenses, to our intellectual property, (ii) research and development services, (iii) drug product manufacturing, and/or (iv) participation on joint research and/or joint development committees. The payments we may receive under these arrangements typically include one or more of the following: non-refundable, up-front license fees; option exercise fees; funding of research and/or development efforts; amounts due upon the achievement of specified objectives; and/or royalties on future product sales.
	ASC 605-25 provides guidance relating to the separability of deliverables included in an arrangement into different units of accounting and the allocation of arrangement consideration to the units of accounting. The evaluation of multiple-element arrangements requires management to make judgments about (i) the identification of deliverables, (ii) whether such deliverables are separable from the other aspects of the contractual relationship, (iii) the estimated selling price of each deliverable, and (iv) the expected period of performance for each deliverable.
	To determine the units of accounting under a multiple-element arrangement, management evaluates certain separation criteria, including whether the deliverables have stand-alone value, based on the relevant facts and circumstances for each arrangement. Management then estimates the selling price for each unit of accounting and allocates the arrangement consideration to each unit utilizing the relative selling price method. The allocated consideration for each unit of accounting is recognized over the related obligation period in accordance with the applicable revenue recognition criteria.
	If there are deliverables in an arrangement that are not separable from other aspects of the contractual relationship, they are treated as a combined unit of accounting, with the allocated revenue for the combined unit recognized in a manner consistent with the revenue recognition applicable to the final deliverable in the combined unit. Payments received prior to satisfying the relevant revenue recognition criteria are recorded as deferred revenue in the accompanying balance sheets and recognized as revenue when the related revenue recognition criteria are met.
	We typically receive non-refundable, up-front payments when licensing our intellectual property, which often occurs in conjunction with a research and development agreement. When management believes that the license to our intellectual property has stand-alone value, we generally recognize revenue attributed to the license upon delivery provided that there are no future performance requirements for use of the license. When management believes that the license to our intellectual property does not have stand-alone value, we typically recognize revenue attributed to the license on a straight-line basis over the contractual or estimated performance period. When the performance period is not specifically identifiable from the agreement, we estimate the performance period based upon provisions contained within the agreement, such as the duration of the research or development term.
	Most of our agreements provide for non-refundable milestone payments. We recognize revenue that is contingent upon the achievement of a substantive milestone in its entirety in the period in which the milestone is achieved. A milestone is considered substantive when the consideration payable to us for such milestone (i) is consistent with our performance necessary to achieve the milestone or the increase in value to the partnership or collaboration resulting from our performance, (ii) relates solely to our past performance and (iii) is reasonable relative to all of the other deliverables and payments within the arrangement. In making this assessment, we consider all facts and circumstances relevant to the arrangement, including factors such as the scientific, regulatory, commercial and other risks that must be overcome to achieve the milestone, the level of effort and investment required to achieve the milestone and whether any portion of the milestone consideration is related to future performance or deliverables.
	For payments payable on achievement of milestones that do not meet all of the conditions to be considered substantive, we recognize a portion of the payment as revenue when the specific milestone is achieved, and the contingency is removed, based on the applicable percentage earned of the estimated research or development effort, or other performance obligations that have elapsed, to the total estimated research and/or development effort attributable to the milestone. In other cases, when a non-substantive milestone payment is attributed to our future research or development obligations, we recognize the revenue on a straight-line basis, or other appropriate method, over the estimated remaining research or development effort. Other contingent event-based payments for which payment is either contingent solely upon the passage of time or the result of our partner's or collaborator's performance are recognized when earned.
	We periodically review the expected performance periods under each of our agreements that provide for non-refundable up-front payments, license fees or milestone payments. We adjust the amortization periods when appropriate to reflect changes in assumptions relating to the duration of expected performance periods. We could accelerate revenue recognition for non-refundable up-front payments, license fees and milestone payments in the event of early termination of programs or if our expectations change. Alternatively, we could decelerate such revenue recognition if programs are extended or delayed. While changes to such estimates have no impact on our reported cash flows, our reported revenue may be significantly influenced by our estimates of the period over which our obligations are expected to be performed and, therefore, over which revenue is recognized.
	See Note 3 – Collaboration and License Agreements for further information about our partnerships and collaborations.
	Segments
	We operate in one reportable segment and, accordingly, no segment disclosures have been presented herein. All of our equipment, leasehold improvements and other fixed assets are physically located within the U.S., and all agreements with our partners are denominated in U.S. dollars.
	Concentration of Business Risks
	Significant Partnerships
	The following significant partnerships contributed greater than 10% of our total revenue during at least one of the periods set forth below. The revenue from these partners as a percentage of total revenue was as follows:
		Three Months Ended					Nine Months Ended
		March 31,					March 31,
		2014		2013			2014			2013
	AstraZeneca AB	0.2	%	0.2	%		14.1	%		0.4	%
	Celgene	12.6		32.3			7.7			21.5
	Genentech, Inc.	6.9		13.7			7.7			13.3
	Loxo Oncology, Inc.	16.4		—			22.2			—
	Novartis International Pharmaceutical Ltd.	48.2		34.5			31.2			23.5
	Oncothyreon Inc.	10.8		—			7.4			—
	Amgen Inc.	—		—			—			25.2
		95.1	%	80.7	%		90.3	%		83.9	%
	The loss of one or more of our significant partners could have a material adverse effect on our business, operating results or financial condition. We do not require collateral from our partners, though most pay in advance. Although we are impacted by economic conditions in the biotechnology and pharmaceutical sectors, management does not believe significant credit risk exists as of March 31, 2014.
	Geographic Information
	The following table details revenue from partnerships by geographic area based on the country in which our partners are located (in thousands):
		Three Months Ended							Nine Months Ended
		March 31,							March 31,
		2014			2013				2014			2013
	North America	$	4,007		$	6,495			$	19,713		$	33,623
	Europe	3,765			3,460				16,318			10,539
	Asia Pacific	1			—				36			3
	Total revenue	$	7,773		$	9,955			$	36,067		$	44,165
	Accounts Receivable
	Novartis and Oncothyreon accounted for 78% and 19%, respectively, of our total accounts receivable balances as of March 31, 2014, compared with 91% of our total accounts receivable balances attributable to Novartis as of June 30, 2013.

MARKETABLE_SECURITIES

MARKETABLE SECURITIES	9 Months Ended
	Mar. 31, 2014
Marketable Securities [Abstract]	'
MARKETABLE SECURITIES	'
	MARKETABLE SECURITIES
	Marketable securities consisted of the following as of March 31, 2014 (in thousands):
				Gross		Gross
		Amortized		Unrealized		Unrealized			Fair
		Cost		Gains		Losses			Value
	Short-term available-for-sale securities:
	U.S. treasury securities	$	57,388	$	7	$	—		$	57,395
	Mutual fund securities	319		—		—			319
		57,707		7		—			57,714
	Long-term available-for-sale securities:
	Mutual fund securities	593		—		—			593
		593		—		—			593
	Total	$	58,300	$	7	$	—		$	58,307
	Marketable securities consisted of the following as of June 30, 2013 (in thousands):
				Gross		Gross
		Amortized		Unrealized		Unrealized			Fair
		Cost		Gains		Losses			Value
	Short-term available-for-sale securities:
	U.S. treasury securities	$	47,130	$	—	$	(2	)	$	47,128
	Mutual fund securities	377		—		—			377
		47,507		—		(2		)	47,505
	Long-term available-for-sale securities:
	Mutual fund securities	465		—		—			465
		465		—		—			465
	Total	$	47,972	$	—	$	(2	)	$	47,970
	The majority of the mutual fund securities shown in the above tables are securities held under the Array BioPharma Inc. Deferred Compensation Plan.
	The estimated fair value of our marketable securities was classified into fair value measurement categories as follows (in thousands):
		March 31,		June 30,
		2014		2013
	Quoted prices in active markets for identical assets (Level 1)	$	58,307	$	47,970
	Quoted prices for similar assets observable in the marketplace (Level 2)	—		—
	Significant unobservable inputs (Level 3)	—		—
	Total	$	58,307	$	47,970
	As of March 31, 2014, the amortized cost and estimated fair value of available-for-sale securities by contractual maturity were as follows (in thousands):
		Amortized		Fair
		Cost		Value
	Due in one year or less	$	57,707	$	57,714
	Due in one year to three years	593		593
	Total	$	58,300	$	58,307

COLLABORATION_AND_LICENSE_AGRE

COLLABORATION AND LICENSE AGREEMENTS	9 Months Ended
	Mar. 31, 2014
Collaboration and License Agreements [Abstract]	'
COLLABORATION AND LICENSE AGREEMENTS	'
	COLLABORATION AND LICENSE AGREEMENTS
	Deferred revenue related to collaboration and license agreements with our partners consisted of the following (in thousands):
		March 31,			June 30,
		2014			2013
	Celgene	$	8,234		$	—
	Genentech, Inc.	537			2,300
	Loxo Oncology, Inc.	375			—
	Novartis International Pharmaceutical Ltd.	803			12,053
	Other partners	113			—
	Total deferred revenue	10,062			14,353
	Less: Current portion	(5,733		)	(14,353		)
	Deferred revenue, long-term portion	$	4,329		$	—
	Celgene
	Array and Celgene Corporation and Celgene Alpine Investment Co., LLC (collectively "Celgene") entered into a Drug Discovery and Development Option and License Agreement in July 2013 to collaborate on development of an Array-invented preclinical development program targeting a novel inflammation pathway. The agreement provides Celgene an option to select multiple clinical development candidates that Celgene may further develop on an exclusive basis under the agreement. Celgene also has the option to obtain exclusive worldwide rights to commercialize one or more of the development compounds it selects upon payment of an option exercise fee to Array. Array will be responsible for funding and conducting preclinical discovery research on compounds directed at the target, and Celgene will be responsible for all clinical development and commercialization of any compounds it selects.
	Array received a non-refundable up-front payment of $11 million from Celgene during the first quarter of fiscal 2014. Array is also eligible to receive potential milestone payments of up to $376 million based upon achievement of development, regulatory and sales objectives identified in the agreement, plus royalties on net sales of all drugs. Additionally, Array will retain all rights to the program if Celgene does not exercise its option.
	Pursuant to the accounting guidance for revenue recognition for multiple-element arrangements, we determined that Array is obligated to deliver three non-contingent deliverables related to the Celgene agreement.  These deliverables are (i) the performance of research services under the discovery program (the "research services deliverable"), (ii) a non-exclusive license granted to Celgene to certain Array and collaboration technology for the sole purpose of being able to perform collaboration activities and (iii) participation on the joint research committee ("JRC"). The Celgene agreement provides for no general right of return for any non-contingent deliverable. Both the research services deliverable and the JRC deliverable meet the separation criteria; however, the non-exclusive license deliverable has no value outside of the collaboration, therefore, it does not meet the separation criteria and is recognized as a combined unit of accounting with the research services deliverable. The research services deliverable and the JRC deliverable are both expected to be delivered throughout the duration of the option term, which is the period of time between the effective date of the agreement and the earlier of a specified amount of time after the completion of certain preclinical studies to be conducted under the Celgene agreement, or three years after the effective date. The option term may be extended by Celgene for an additional one-year period under certain circumstances specified in the agreement.
	The exclusive license that Celgene may obtain by exercising its option and paying an exercise fee to Array is a contingent deliverable due to the uncertainty regarding whether Celgene will exercise its option. Therefore, we did not allocate any of the up-front payment received to this contingent deliverable.
	Determining a selling price for the research services deliverable required the use of certain estimates by management, including our estimate for the expected length of the option term, which we currently believe to be three years, and the number of full-time employees ("FTEs") required for the conduct of the discovery program. We utilized vendor-specific objective evidence for our FTE costs related to activities to be performed by Array scientists, as well as third-party estimates to determine the costs of the preclinical studies that we plan to outsource. We estimated a selling price for the JRC deliverable by estimating the time required for our scientists to perform their obligations and utilized our established FTE rate for research services as an estimate of what we would bill for this time if we sold this deliverable on a stand-alone basis.
	The majority of the up-front payment is for the performance of research services. We recognized $976 thousand and $2.8 million of this payment in collaboration revenue during the three and nine months ended March 31, 2014, respectively, and will recognize the rest of the up-front payment over the remainder of the three-year estimated option term.
	The Celgene agreement will continue on a country-by-country basis until the termination of the royalty payment obligations or, if earlier, the termination of the agreement in accordance with its terms. The agreement may be terminated by either party for an uncured material breach by the other party. In addition, Celgene may terminate the agreement in its entirety or as to any collaboration compound by giving Array six months’ prior notice, and in any such event the rights to any terminated programs would revert to Array and Celgene’s obligation to pay milestones or royalties with respect to any terminated programs would terminate. If Celgene does not exercise its option to obtain an exclusive license, the period of exclusivity to be observed by Array under the agreement will end upon expiration of the option term. If Celgene does exercise its option, the period of exclusivity will continue as long as Celgene either has an active development program for, or is commercializing, a compound selected under the agreement, and Array continues to be entitled to receive milestones or royalties under the agreement. Array and Celgene have also agreed to indemnify the other party for breaches of their respective representations and warranties under the agreement and certain of their respective activities under the agreement.
	Genentech, Inc.
	We entered into a Licensing and Collaboration Agreement with Genentech in December 2003 for development of small molecule drugs invented by Array directed at multiple therapeutic targets in the field of oncology. In August 2011, we entered into a License Agreement with Genentech for the development of each company’s small-molecule Checkpoint kinase 1 ("Chk-1") program in oncology.
	Under the 2003 agreement, Genentech made an up-front payment and provided research funding to Array, and we are entitled to receive additional milestone payments based on achievement of certain development and commercialization milestones and royalties on certain resulting product sales under the agreement. The 2003 agreement was expanded in 2005, 2008, and 2009 to develop clinical candidates directed against additional targets and, in 2010 the term of funded research was extended through January 2013, after which the research term ended. We have received up-front and milestone payments totaling $23.0 million under the 2003 agreement. We are eligible to earn an additional $24.5 million in payments if Genentech continues development and achieves the remaining milestones set forth in the 2003 agreement.
	The partnered drugs under the Chk-1 agreement include Genentech’s compound GDC-0425 and Array’s compound GDC-0575 (ARRY-575).  Under the terms of the Chk-1 collaboration agreement, Genentech acquired a license to Array’s compound GDC-0575 and is responsible for all clinical development and commercialization activities of the partnered drugs. We received an up-front payment of $28 million during the first quarter of fiscal 2012 and are eligible to receive payments of up to $380 million based on the achievement of clinical and commercial milestones under this agreement.  We will also receive up to double-digit royalties on sales of any drugs resulting from the Chk-1 agreement.
	Pursuant to the accounting guidance for revenue recognition for multiple-element arrangements, we determined that Array is obligated to deliver three non-contingent deliverables related to the Chk-1 agreement that meet the separation criteria and therefore are treated as separate units of accounting.  These deliverables are (i) the delivery of specified clinical materials for GDC-0575 for use in future clinical trials, (ii) the transfer of the license and related technology with ongoing regulatory services to assist in filing the Investigational New Drug ("IND") application and to provide supporting data, and (iii) activities related to the achievement of a specified milestone. The Chk-1 agreement provides for no general right of return for any non-contingent deliverable.
	The first non-contingent deliverable required Array to prepare specified clinical materials for delivery to Genentech. We completed this delivery in December 2011. The second obligation, related to the non-contingent deliverable to assist in filing the IND application, was completed as of March 31, 2012. Revenue for both of these deliverables has been recognized in full. We are recognizing revenue allocated to the third obligation over the period from inception of the Chk-1 agreement until such time that the specified milestone is achieved.
	The Chk-1 agreement also includes a contingent deliverable whereby Genentech could, at its sole option, require us to perform chemical and manufacturing control ("CMC") activities for additional drug product or improved processes.  The CMC option is a contingent deliverable because the scope, likelihood and timing of the potential services are unclear. Certain critical terms of the services have not yet been negotiated, including the fee that we would receive for the service and Genentech could elect to acquire the drug materials without our assistance either by manufacturing them in-house or utilizing a third-party vendor. Therefore, no portion of the up-front payment has been allocated to the contingent CMC services that we may be obligated to perform in the future.
	The determination of the stand-alone value for each non-contingent deliverable under the Chk-1 agreement required the use of significant estimates by management, including estimates of the time to complete the transfer of related technology and to assist in filing the IND. Further, to determine the stand-alone value of the license and initial milestone, we considered the negotiation discussions that led to the final terms of the agreement, publicly-available data for similar licensing arrangements between other companies and the economic terms of previous collaborations Array has entered into with other partners. Management also considered the likelihood of achieving the initial milestone based on our historical experience with early stage development programs and on the ability to achieve the milestone with either of the two partnered drugs, GDC-0425 or GDC-0575. Taking into account these factors, we allocated a portion of the up-front payment to the first milestone. No portion of any revenue recognized is refundable.
	We recognized license and milestone revenue under both agreements of $537 thousand and $1.1 million during the three months ended March 31, 2014 and 2013, respectively, and $2.8 million and $3.5 million during the nine months ended March 31, 2014 and 2013, respectively. We also recognized $266 thousand and $2.3 million in collaboration revenue under the 2003 agreement during the three and nine months ended March 31, 2013, respectively, with no corresponding revenue during the current fiscal year.
	Genentech may terminate the 2003 agreement in its entirety upon four months' written notice to Array, and may terminate the Chk-1 agreement upon 60 days' written notice to Array. Under the Chk-1 agreement, either party may terminate upon a material breach by the other party that is not cured within the specified time period. If Genentech terminates the Chk-1 agreement due to a material breach by Array, the license to Genentech becomes irrevocable and the royalty to Array will be reduced to a specified percentage. If the Chk-1 agreement is terminated by Genentech for convenience or by Array due to a material breach by Genentech, the license to Genentech will terminate, Genentech will continue to be required to pay milestone and royalty payments on any programs for which Genentech had initiated clinical development and Array's exclusivity obligations will continue so long as Genentech is developing or commercializing at least one product subject to the Chk-1 agreement.
	Loxo Oncology, Inc.
	In July 2013, Array entered into a Drug Discovery Collaboration Agreement with Loxo and granted Loxo exclusive rights to develop and commercialize certain Array-invented compounds targeted at the Trk family of receptor tyrosine kinases. Under the terms of the agreement, Loxo will fund further preclinical research to be conducted by Array during a three-year discovery research phase, which may be extended by Loxo for up to two additional one-year renewal periods. In addition, Loxo will fund further discovery and preclinical research to be conducted by Array directed at other targets during the research phase of the agreement. Loxo will be responsible for all additional preclinical and clinical development and commercialization.
	In consideration of the exclusive license and rights granted to Loxo under the agreement, Array received shares of Loxo non-voting preferred stock representing a 19.9% interest in the newly-formed entity. Array will also receive advance monthly payments for preclinical research and other services Array provides during the term of the discovery program and is eligible to receive up to $435 million in milestone payments if certain clinical, regulatory and sales milestones are achieved plus royalties on sales of any resulting drugs.
	Pursuant to the accounting guidance for revenue recognition for multiple-element arrangements, we determined that Array is obligated to deliver three non-contingent deliverables related to the Loxo agreement.  These deliverables are (i) the conduct of the research activities under the discovery program, including related technology transfer (the "research services deliverable"), (ii) an exclusive worldwide license granted to Loxo to certain Array technology and Array's interest in collaboration technology, as well as exclusive worldwide marketing rights (the "license deliverable") and (iii) participation on the JRC. The Loxo agreement provides for no general right of return for any non-contingent deliverable. All of the identified non-contingent deliverables meet the separation criteria; therefore, they are each treated as separate units of accounting. Delivery of the research services and JRC participation obligations will be completed throughout the expected duration of the three-year discovery program term. The license deliverable was complete as of September 30, 2013.
	To determine the stand-alone value of the license, we considered our negotiation discussions with Loxo that led to the final terms of the agreement, publicly-available data for similar licensing arrangements between other companies and the economic terms of previous collaborations Array has entered into with other partners. We also considered the estimated valuation of the Series A-1 shares performed by an independent third-party and concluded that this value reasonably approximated the estimated selling price of the related license. We determined a selling price for the research services deliverable using our established annual FTE rate, which represents vendor-specific objective evidence for any FTE costs related to activities to be performed by Array scientists. We determined an estimated selling price for the JRC deliverable by estimating the time required for our scientists to perform their obligations and utilized our established FTE rate for research services as an estimate of what we would bill for this time if we sold this deliverable on a stand-alone basis.
	The receipt of the preferred shares was in consideration for the license deliverable. We allocated an amount of consideration under the Loxo agreement to the license deliverable equal to the fair value of the shares received. We chose the fair value of the shares received as this was a more evident and readily determinable measure as compared to the alternative method for determining the consideration to allocate to the license deliverable, which was the fair value for the exclusive license. The valuation of the preferred shares required the use of significant assumptions and estimates, including assumptions about the estimated volatility of the equity, the estimated time to a liquidity event, and the likelihood of Loxo obtaining additional future financing.
	The remaining consideration under the Loxo agreement, which Loxo will pay to Array in advance monthly payments, was allocated between the research services and JRC participation deliverables and will be recognized as the services are rendered throughout the discovery program term.
	We recognized the full $4.5 million estimated fair value of the preferred shares received in license revenue during the first quarter of fiscal 2014, as delivery of the shares was not contingent upon either the delivery of additional items or meeting other specified performance conditions. We also recognized $1.3 million and $3.5 million in collaboration revenue during the three and nine months ended March 31, 2014.
	The Loxo agreement will continue on a country-by-country basis until the termination of the royalty payment obligations, unless terminated earlier by the parties in accordance with its terms. The agreement may be terminated by either party upon the failure of the other party to cure any material breach of its obligations under the agreement, provided that, so long as Loxo is reasonably able to pay its debts as they are due, Array will only be entitled to seek monetary damages, and will not have the right to terminate the agreement in the event of Loxo's breach after expiration of the discovery program term. Loxo also has the right, after the one-year anniversary of the agreement, to terminate the agreement or to terminate discovery research with respect to any targets under development with six months’ notice to Array. If Loxo terminates the agreement for convenience, all licenses granted to Loxo will terminate and Array will have all rights to further develop and commercialize the licensed programs. The period of exclusivity to be observed by Array under the Loxo agreement will continue as long as Loxo either has an active research and/or development program for a target and the program could result in the receipt of milestones or royalties under the program by Array, or as long as Loxo is commercializing a product for a target under the agreement.
	Novartis International Pharmaceutical Ltd.
	Array entered into a License Agreement with Novartis in April 2010, which grants Novartis the exclusive worldwide right to co-develop and commercialize binimetinib (MEK162), as well as other specified MEK inhibitors. Under the Novartis agreement, we are responsible for completing our on-going Phase 1 clinical trial of binimetinib in combination with paclitaxel. Additionally, we have elected to conduct further development of binimetinib as a single agent in a Phase 3 trial of patients with low-grade serous ovarian cancer. Novartis is responsible for all other development activities and for the commercialization of products under the agreement, subject to our option to co-detail approved drugs in the U.S.
	In consideration for the rights granted to Novartis under the agreement, we received $45 million in the fourth quarter of fiscal 2010, which was comprised of an up-front fee and a milestone payment. In March 2011, we earned a $10 million milestone payment, which was received in the fourth quarter of fiscal 2011. In June 2013, we earned a $5 million milestone payment, which was received during the first quarter of fiscal 2014. We are eligible to receive up to approximately $408 million in additional aggregate milestone payments if all clinical, regulatory and commercial milestones specified in the Novartis agreement are achieved. Novartis will also pay us royalties on worldwide sales of any approved drugs. In addition, as long as we continue to co-develop products under the program, the royalty rate on U.S. sales is significantly higher than the rate on sales outside the U.S., as described below under Co-Development Arrangement.
	We are recognizing the up-front fee and milestone payments on a straight-line basis from April 2010 through April 2014, which is our estimate for the term of performance under the Novartis agreement. Under the Novartis agreement, during each of the three and nine months ended March 31, 2014 and 2013, we recognized $2.5 million and $7.5 million, respectively, of license revenue. We also recognized milestone revenue of $1.3 million and $938 thousand during the three months ended March 31, 2014 and 2013, respectively, and $3.8 million and $2.8 million during the nine months ended March 31, 2014 and 2013, respectively.
	The Novartis agreement will be in effect on a product-by-product and country-by-country basis until no further payments are due with respect to the applicable product in the applicable country, unless terminated earlier. Either party may terminate the Novartis agreement in the event of an uncured material breach of a material obligation by the other party upon 90 days' prior notice. Novartis may terminate portions of the agreement following a change in control of Array and may terminate the agreement in its entirety or on a product-by-product basis with 180 days' prior notice. Array and Novartis have each further agreed to indemnify the other party for manufacturing or commercialization activities conducted by it under the agreement, or for negligence, willful misconduct or breach of covenants, warranties or representations made by it under the agreement.
	Co-Development Arrangement
	The Novartis agreement also contains co-development rights whereby we can elect to pay a share of the combined total development costs, subject to a maximum amount with annual caps. During the first two years of the co-development period, Novartis reimbursed us for 100% of our development costs. We began to pay our share of the combined development costs that had accrued since inception of the program with payments to Novartis of $9.2 million and $11.3 million in the second quarters of fiscal 2013 and fiscal 2014, respectively, in accordance with the terms of the Novartis agreement. Annually, we may opt out of paying our share of these costs. If we opt out of paying our share of the combined development costs with respect to one or more products, the U.S. royalty rate would then be reduced for any such product based on a specified formula, subject to a minimum that equals the royalty rate on sales outside the U.S.
	We record a receivable in accounts receivables on the balance sheet for the amounts due from Novartis for the reimbursement of our development costs in excess of the annual cap. We record expense in cost of partnered programs on the statement of operations and comprehensive loss for our share of the combined development costs and accrue these costs on our balance sheet in co-development liability.
	Our share of the combined development costs was $4.7 million and $3.6 million during the three months ended March 31, 2014 and 2013, respectively, and $14.2 million and $7.8 million during the nine months ended March 31, 2014 and 2013, respectively. We recorded co-development liabilities of $12.0 million and $11.0 million as of March 31, 2014 and June 30, 2013, respectively. We had related receivables of $3.4 million and $3.7 million as of March 31, 2014 and June 30, 2013, respectively, for the reimbursable development costs we incurred during the respective preceding three-month periods in excess of the annual cap.
	Oncothyreon Inc.
	In May 2013, we entered into a Development and Commercialization Agreement with Oncothyreon to collaborate on the development and commercialization of ARRY-380, now also known as ONT-380, for the treatment of cancer. Under the terms of the agreement, Oncothyreon paid Array a one-time up-front fee of $10 million and received a license to ARRY-380 enabling it to perform its development activities. Oncothyreon will be responsible for conducting the clinical development of ARRY-380 through a defined set of proof-of-concept trials and will also be responsible for all development costs incurred by or on behalf of either party with respect to these proof-of-concept trials.
	Unless Array opts out of further development and commercialization, as described below, Array will reimburse Oncothyreon for the proof-of-concept development costs through a mechanism whereby Array bears a disproportionate amount of Phase 3 development costs and Oncothyreon receives a disproportionate amount of the profits in the U.S. until Oncothyreon is repaid a percentage of the amounts it has spent on the proof-of-concept trials. Oncothyreon and Array will jointly conduct any Phase 3 development supported by the proof-of-concept studies.  Subject to certain exceptions primarily related to the reimbursement provisions described above, Oncothyreon and Array will each be responsible for 50% of the development costs incurred with respect to any Phase 3 development.
	Array is responsible for worldwide commercialization of the product. Oncothyreon has a 50% co-promotion right in the U.S.  Each party also retains the right to opt out of further development and commercialization in exchange for a royalty. Subject to certain exceptions, Oncothyreon and Array will bear, or be entitled to, 50% of the profit or loss from commercializing the product in the U.S. Outside of the U.S., Oncothyreon will receive a double-digit royalty on net sales intended to approximate a 50% profit share, and the two companies will share equally the proceeds from any sublicense of marketing rights.
	Following the proof-of-concept trials, both Array and Oncothyreon are currently expected to be active participants in the collaboration and will jointly (50/50) share risks and rewards under the agreement. Accordingly, the collaborative activities not included in the proof-of-concept studies under the Oncothyreon agreement should be accounted for under ASC 808, Collaborative Arrangements and, as such, these collaborative activities were separated from the deliverables under the Oncothyreon agreement. Additionally, the up-front consideration is not related to any performance of the collaborative activities and is not refundable; therefore, none of the up-front payment was attributed to the collaborative activities.
	Pursuant to the accounting guidance for revenue recognition for multiple-element arrangements, we determined that in order for Oncothyreon to be able to conduct its activities during the proof-of-concept trials, Array is obligated to deliver three non-contingent deliverables related to the Oncothyreon agreement that meet the separation criteria and therefore are treated as separate units of accounting.  These deliverables are (i) the license deliverable, which includes the initial technology transfer, as well as the transfer of regulatory information necessary for Oncothyreon to file its own IND, (ii) the transfer of existing quantities of clinical product, and (iii) participation on the joint development committee ("JDC") during the proof-of-concept activities. The Oncothyreon agreement provides for no general right of return for any non-contingent deliverable. The first non-contingent deliverable for the license deliverable was completed as of June 30, 2013. The second non-contingent deliverable requiring Array to deliver existing quantities of clinical materials ARRY-380 is expected to be completed by the end of 2014, and the final obligation requiring us to participate on the JDC will be completed over the estimated time frame of the proof-of-concept activities.
	The Oncothyreon agreement also includes contingent deliverables for the future manufacture and supply of additional drug product for the studies and for the rendering of support and advisory services by Array to Oncothyreon during the proof-of-concept trials. These deliverables are considered contingent because the scope, likelihood and timing of the potential services are unclear. We could elect to manufacture the additional drug materials in-house or by utilizing a third-party vendor. Additionally, we are not required to have any individuals devoted to supporting Oncothyreon, and we will charge our costs to the development program as they are incurred. Therefore, no portion of the up-front payment has been allocated to the contingent deliverables that we may be obligated to perform in the future.
	To determine the stand-alone value of the license deliverable, we considered the differences between this agreement and the licensing agreements with our other partners, publicly-available data for similar licensing arrangements between other companies and the economic terms of previous collaborations Array has entered into with other partners. Management also considered clinical trial success rates in the industry. Taking into account these factors, as well as the stand-alone values for the delivery of existing drug product and JDC participation, all of the up-front payment was allocated to the license deliverable. No portion of any revenue recognized is refundable.
	We recognized $839 thousand and $2.7 million in collaboration revenue, including $618 thousand and $2.0 million for reimbursable expenses, during the three and nine months ended March 31, 2014, respectively.
	The Oncothyreon agreement will continue on a country-by-country basis until the termination of the royalty payment obligations, or if earlier, the termination of the agreement in accordance with its terms. The Oncothyreon agreement may be terminated by Array upon Oncothyreon's uncured failure to timely initiate committed trials or complete certain development activities, and may also be terminated under certain other circumstances, including material breach, as set forth in the document. Array and Oncothyreon have also agreed to indemnify the other party for certain of their respective activities under the agreement.

LONGTERM_DEBT

LONG-TERM DEBT	9 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
LONG-TERM DEBT	'
	LONG-TERM DEBT
	Long-term debt consists of the following (in thousands):
		March 31,			June 30,
		2014			2013
	Comerica term loan	$	14,550		$	14,550
	Convertible senior notes	132,250			132,250
	Long-term debt, gross	146,800			146,800
	Less: Unamortized debt discount	(44,125		)	(47,779		)
	Long-term debt, net	$	102,675		$	99,021
	Comerica Bank
	We entered into a Loan and Security Agreement with Comerica Bank dated June 28, 2005, which has been subsequently amended and provides for a $15 million term loan and a revolving line of credit of $6.8 million. The term loan bears interest at a variable rate and we currently have $14.6 million outstanding under the term loan. The revolving line of credit was established to support standby letters of credit in relation to our facilities leases, and has not been drawn upon.
	Effective December 31, 2013, the Loan and Security Agreement was amended to extend the maturity date of the term loan to October 2017 and to extend the maturity date of the revolving line of credit to June 2015. Also effective December 31, 2013, the interest rate on the term loan was amended to be equal to the Prime Rate, if the balance of our cash, cash equivalents and marketable securities maintained at Comerica is greater than or equal to $10 million, or equal to the Prime Rate plus 2% if this balance is less than $10 million. As of March 31, 2014, the term loan with Comerica had an interest rate of 3.25% per annum.
	The amendment to the Loan and Security Agreement also modified covenants requiring certain minimum monthly ending balances of total cash, cash equivalents and marketable securities to be maintained at Comerica based on our overall outstanding cash, cash equivalents and marketable securities. Effective December 31, 2013, this prior covenant was replaced with a covenant that requires us to maintain a balance of cash at Comerica that is at least equivalent to our total outstanding obligation under the term loan if our overall balance of cash, cash equivalents and marketable securities at Comerica and approved outside accounts is less than $22 million.
	The amendment further added a financial covenant that applies if we draw down on the revolving line of credit. In this event, we must maintain a ratio equal to at least 1.25 to 1.00 as of the last day of each month commencing December 31, 2013, and calculated as follows: (A) total cash, cash equivalents and marketable securities less all outstanding obligations to Comerica under the term loan, plus specified percentages of the respective values of eligible accounts, equipment and eligible inventory, divided by (B) the aggregate amount outstanding under the revolving letter of credit sublimit. No amounts are outstanding under the revolving line of credit and we do not expect to make any draws under this facility.
	Our obligations under the Loan and Security Agreement are secured by a first priority security interest in all of our assets, other than our intellectual property. The Loan and Security Agreement contains representations and warranties and affirmative and negative covenants that are customary for credit agreements of this type. Our ability to, among other things, sell certain assets, engage in a merger or change in control transaction, incur debt, pay cash dividends and make investments, are restricted by the Loan and Security Agreement. The Loan and Security Agreement also contains events of default that are customary for credit agreements of this type, including payment defaults, covenant defaults, insolvency type defaults and events of default relating to liens, judgments, material misrepresentations and the occurrence of certain material adverse events.
	We use a discounted cash flow model to estimate the fair value of the Comerica term loan. The fair value was estimated at $14.6 million as of both March 31, 2014 and June 30, 2013, and was classified using Level 2, observable inputs other than quoted prices in active markets.
	3.00% Convertible Senior Notes Due 2020
	On June 10, 2013, through a registered underwritten public offering, we issued and sold $132.3 million aggregate principal amount of 3.00% convertible senior notes due 2020 (the "Notes"), resulting in net proceeds to Array of approximately $128.0 million after deducting the underwriting discount and offering expenses.
	The Notes are the general senior unsecured obligations of Array. The Notes will bear interest at a rate of 3.00% per year, payable semi-annually on June 1 and December 1 of each year, commencing December 1, 2013. The Notes will mature on June 1, 2020, unless earlier converted by the holders or redeemed by us.
	Prior to March 1, 2020, holders may convert the Notes only upon the occurrence of certain events described in a supplemental indenture we entered into with Wells Fargo Bank, N.A., as trustee, upon issuance of the Notes. On or after March 1, 2020, until the close of business on the scheduled trading day immediately prior to the maturity date, holders may convert their Notes at any time. Upon conversion, the holders will receive, at our option, shares of our common stock, cash or a combination of shares and cash. The Notes will be convertible at an initial conversion rate of 141.8641 shares per $1,000 in principal amount of Notes, equivalent to a conversion price of approximately $7.05 per share. The conversion rate is subject to adjustment upon the occurrence of certain events described in the supplemental indenture. Holders of the Notes may require us to repurchase all or a portion of their Notes for cash at a price equal to 100% of the principal amount of the Notes to be purchased, plus accrued and unpaid interest, if there is a qualifying change in control or termination of trading of our common stock.
	On or after June 4, 2017, we may redeem for cash all or part of the outstanding Notes if the last reported sale price of our common stock exceeds 130% of the applicable conversion price for 20 or more trading days in a period of 30 consecutive trading days ending within seven trading days immediately prior to the date we provide the notice of redemption to holders. The redemption price will equal 100% of the principal amount of the Notes to be redeemed, plus all accrued and unpaid interest. If we were to provide a notice of redemption, the holders could convert their Notes up until the business day immediately preceding the redemption date.
	In accordance with ASC 470-20, we used an effective interest rate of 10.25% to determine the liability component of the Notes. This resulted in the recognition of $84.2 million as the liability component of the Notes and the recognition of the residual $48.0 million as the debt discount with a corresponding increase to additional paid-in capital for the equity component of the Notes. The underwriting discount and estimated offering expenses of $4.3 million were allocated between the debt and equity issuance costs in proportion to the allocation of the liability and equity components of the Notes. Debt issuance costs of $2.7 million were included in other long-term assets on our balance sheet as of the issuance date. Equity issuance costs of $1.6 million were recorded as an offset to additional paid-in capital. The debt discount and debt issuance costs will be amortized as non-cash interest expense through June 1, 2020. The balance of unamortized debt issuance costs was $2.5 million as of March 31, 2014.
	The fair value of the Notes was approximately $137.4 million and $126.0 million at March 31, 2014 and June 30, 2013, respectively, and was determined using Level 2 inputs based on their quoted market values.
	Summary of Interest Expense
	The following table shows the details of our interest expense for all of our debt arrangements outstanding during the periods presented, including contractual interest, and amortization of debt discount, debt issuance costs and loan transaction fees that were charged to interest expense (in thousands):
		Three Months Ended						Nine Months Ended
		March 31,						March 31,
		2014			2013			2014		2013
	Comerica Term Loan
	Simple interest	$	118		$	120		$	360	$	364
	Amortization of fees paid for letters of credit	9			27			38		81
	Total interest expense on the Comerica term loan	127			147			398		445
	Convertible Senior Notes
	Contractual interest	992			—			2,987		—
	Amortization of debt discount	1,245			—			3,655		—
	Amortization of debt issuance costs	71			—			206		—
	Total interest expense on the convertible senior notes	2,308			—			6,848		—
	Deerfield Credit Facilities
	Simple interest	—			1,608			—		4,826
	Amortization of debt discounts and transaction fees	—			1,140			—		3,420
	Change in fair value of the embedded derivatives	—			(58		)	—		(235		)
	Total interest expense on the Deerfield credit facilities	—			2,690			—		8,011
	Total interest expense	$	2,435		$	2,837		$	7,246	$	8,456

STOCKHOLDERS_DEFICIT

STOCKHOLDERS' DEFICIT	9 Months Ended
	Mar. 31, 2014
Equity [Abstract]	'
STOCKHOLDERS' DEFICIT	'
	STOCKHOLDERS’ DEFICIT
	Controlled Equity Offering
	On March 27, 2013, we entered into a Sales Agreement with Cantor Fitzgerald & Co. ("Cantor"), pursuant to which we may sell up to $75 million in shares of our common stock from time to time through Cantor, acting as our sales agent, in an at-the-market offering. We are not required to sell shares under the Sales Agreement.  Any sales of shares will be made pursuant to an effective shelf registration statement on Form S-3 filed with the SEC. We will pay Cantor a commission of approximately 2% of the aggregate gross proceeds we receive from any sales of our common stock under the Sales Agreement. Unless otherwise terminated, the Sales Agreement continues until the earlier of selling all shares available under the Sales Agreement, or March 27, 2016.
	During the nine months ended March 31, 2014, we sold approximately 8.0 million shares of common stock at an average price of $6.23 per share, for gross proceeds of $50.2 million. Cantor earned commissions of $1.0 million relating to these sales.

RESTRUCTURING_CHARGES

RESTRUCTURING CHARGES	9 Months Ended
	Mar. 31, 2014
Restructuring and Related Activities [Abstract]	'
RESTRUCTURING CHARGES	'
	RESTRUCTURING CHARGES
	On August 5, 2013, we implemented a 20% reduction in our workforce and the affected employees were immediately notified. The reduction in force supports our strategy to fund our development organization with strategic collaborations and to focus our resources to progress our hematology and oncology programs to later stage development. The actions associated with the reductions were substantially completed during the first quarter of fiscal 2014 and, as a result of the reductions, we recorded a one-time restructuring charge of $2.8 million for termination benefits in the same period. Of this charge, $2.2 million was recorded in research and development for proprietary programs and $602 thousand was recorded in general and administrative expense. The restructuring charge is associated with cash payments of $2.6 million and $194 thousand made during the first quarter and second quarter, respectively, of fiscal 2014. Additional non-cash charges may occur in the fourth quarter, depending on timing of potential facility-related charges and other write-downs.

OVERVIEW_AND_BASIS_OF_PRESENTA1

OVERVIEW AND BASIS OF PRESENTATION (Policies)	9 Months Ended
	Mar. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	The accompanying unaudited financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission ("SEC") for interim reporting and, as permitted under those rules, do not include all of the disclosures required by U.S. generally accepted accounting principles ("U.S. GAAP") for complete financial statements. The unaudited financial statements reflect all normal and recurring adjustments that, in the opinion of management, are necessary to present fairly our financial position, results of operations and cash flows for the interim periods presented. Operating results for an interim period are not necessarily indicative of the results that may be expected for a full year.
	These unaudited financial statements should be read in conjunction with our audited financial statements and the notes thereto for the fiscal year ended June 30, 2013, included in our Annual Report on Form 10-K filed with the SEC, from which we derived our balance sheet data as of June 30, 2013.
Use of Estimates	'
	Use of Estimates
	The preparation of these financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses, and related disclosure of contingent assets and liabilities. We base our estimates on historical experience and on various other assumptions that we believe are reasonable under the circumstances. These estimates are the basis for our judgments about the carrying values of assets and liabilities, which in turn may impact our reported revenue and expenses. Our actual results could differ significantly from these estimates under different assumptions or conditions.
	We believe our financial statements are most significantly impacted by the following accounting estimates and judgments: (i) the identification of deliverables under partnerships and collaborations involving multiple elements and determining whether such deliverables are separable from other aspects of the contractual relationship; (ii) estimating the selling price of deliverables for the purpose of allocating arrangement consideration for revenue recognition; (iii) estimating the periods over which the allocated consideration for deliverables is recognized; (iv) estimating accrued outsourcing costs for clinical trials and preclinical testing; (v) determining the fair value of the debt component for our convertible senior notes exclusive of the conversion feature; and (vi) estimating the fair value of non-marketable equity received from licensing transactions.
Equity Investment	'
	Equity Investment
	From time to time, we may enter into collaboration and license agreements under which we receive an equity interest as consideration for all or a portion of up-front, license or other fees under the terms of the agreement. We report equity securities received from non-publicly traded companies in which we do not exercise a significant or controlling interest at cost in other long-term assets in the accompanying balance sheets. We monitor our investments for impairment at least annually, and consider events or changes in circumstances we know of that may have a significant adverse effect on the fair value. We make appropriate reductions in the carrying value if it is determined that an impairment has occurred, based primarily on the financial condition and near and long-term prospects of the issuer. We do not report the fair value of our equity investments because it is not practical to do so.
Accrued Outsourcing Costs	'
	Accrued Outsourcing Costs
	Substantial portions of our preclinical studies and clinical trials are performed by third-party laboratories, medical centers, contract research organizations and other vendors (collectively "CROs"). These CROs generally bill monthly or quarterly for services performed, or bill based upon milestone achievement. For preclinical studies, we accrue expenses based upon estimated percentage of work completed and the contract milestones remaining. For clinical studies, expenses are accrued based upon the number of patients enrolled and the duration of the study. We monitor patient enrollment, the progress of clinical studies and related activities to the extent possible through internal reviews of data reported to us by the CROs, correspondence with the CROs and clinical site visits. Our estimates depend on the timeliness and accuracy of the data provided by the CROs regarding the status of each program and total program spending. We periodically evaluate the estimates to determine if adjustments are necessary or appropriate based on information we receive.
Convertible Senior Notes	'
	Convertible Senior Notes
	Our 3.00% convertible senior notes due 2020 are accounted for in accordance with Financial Accounting Standards Board ("FASB") Accounting Standards Codification (“ASC”) 470, Accounting for Convertible Debt Instruments That May be Settled in Cash upon Conversion (Including Partial Cash Settlement). ASC 470-20 requires the issuer of convertible debt that may be settled in shares or cash upon conversion at the issuer's option, such as our notes, to account for the liability (debt) and equity (conversion option) components separately. The value assigned to the debt component is the estimated fair value, as of the issuance date, of a similar debt instrument without the conversion option. The amount of the equity component (and resulting debt discount) is calculated by deducting the fair value of the liability component from the principal amount of the convertible debt instrument. The resulting debt discount is amortized as additional non-cash interest expense over the expected life of the notes utilizing the effective interest method. Although ASC 470 has no impact on our actual past or future cash flows, it requires us to record non-cash interest expense as the debt discount is amortized.
Revenue Recognition	'
	Revenue Recognition
	We recognize revenue for the performance of services or the shipment of products when each of the following four criteria is met: (i) persuasive evidence of an arrangement exists; (ii) products are delivered or as services are rendered; (iii) the sales price is fixed or determinable; and (iv) collectability is reasonably assured.
	We follow ASC 605-25, Revenue Recognition – Multiple-Element Arrangements and ASC 808, Collaborative Arrangements, if applicable, to determine the recognition of revenue under our collaborative research, development and commercialization agreements. The terms of these agreements generally contain multiple elements, or deliverables, which may include (i) grants of licenses, or options to obtain licenses, to our intellectual property, (ii) research and development services, (iii) drug product manufacturing, and/or (iv) participation on joint research and/or joint development committees. The payments we may receive under these arrangements typically include one or more of the following: non-refundable, up-front license fees; option exercise fees; funding of research and/or development efforts; amounts due upon the achievement of specified objectives; and/or royalties on future product sales.
	ASC 605-25 provides guidance relating to the separability of deliverables included in an arrangement into different units of accounting and the allocation of arrangement consideration to the units of accounting. The evaluation of multiple-element arrangements requires management to make judgments about (i) the identification of deliverables, (ii) whether such deliverables are separable from the other aspects of the contractual relationship, (iii) the estimated selling price of each deliverable, and (iv) the expected period of performance for each deliverable.
	To determine the units of accounting under a multiple-element arrangement, management evaluates certain separation criteria, including whether the deliverables have stand-alone value, based on the relevant facts and circumstances for each arrangement. Management then estimates the selling price for each unit of accounting and allocates the arrangement consideration to each unit utilizing the relative selling price method. The allocated consideration for each unit of accounting is recognized over the related obligation period in accordance with the applicable revenue recognition criteria.
	If there are deliverables in an arrangement that are not separable from other aspects of the contractual relationship, they are treated as a combined unit of accounting, with the allocated revenue for the combined unit recognized in a manner consistent with the revenue recognition applicable to the final deliverable in the combined unit. Payments received prior to satisfying the relevant revenue recognition criteria are recorded as deferred revenue in the accompanying balance sheets and recognized as revenue when the related revenue recognition criteria are met.
	We typically receive non-refundable, up-front payments when licensing our intellectual property, which often occurs in conjunction with a research and development agreement. When management believes that the license to our intellectual property has stand-alone value, we generally recognize revenue attributed to the license upon delivery provided that there are no future performance requirements for use of the license. When management believes that the license to our intellectual property does not have stand-alone value, we typically recognize revenue attributed to the license on a straight-line basis over the contractual or estimated performance period. When the performance period is not specifically identifiable from the agreement, we estimate the performance period based upon provisions contained within the agreement, such as the duration of the research or development term.
	Most of our agreements provide for non-refundable milestone payments. We recognize revenue that is contingent upon the achievement of a substantive milestone in its entirety in the period in which the milestone is achieved. A milestone is considered substantive when the consideration payable to us for such milestone (i) is consistent with our performance necessary to achieve the milestone or the increase in value to the partnership or collaboration resulting from our performance, (ii) relates solely to our past performance and (iii) is reasonable relative to all of the other deliverables and payments within the arrangement. In making this assessment, we consider all facts and circumstances relevant to the arrangement, including factors such as the scientific, regulatory, commercial and other risks that must be overcome to achieve the milestone, the level of effort and investment required to achieve the milestone and whether any portion of the milestone consideration is related to future performance or deliverables.
	For payments payable on achievement of milestones that do not meet all of the conditions to be considered substantive, we recognize a portion of the payment as revenue when the specific milestone is achieved, and the contingency is removed, based on the applicable percentage earned of the estimated research or development effort, or other performance obligations that have elapsed, to the total estimated research and/or development effort attributable to the milestone. In other cases, when a non-substantive milestone payment is attributed to our future research or development obligations, we recognize the revenue on a straight-line basis, or other appropriate method, over the estimated remaining research or development effort. Other contingent event-based payments for which payment is either contingent solely upon the passage of time or the result of our partner's or collaborator's performance are recognized when earned.
	We periodically review the expected performance periods under each of our agreements that provide for non-refundable up-front payments, license fees or milestone payments. We adjust the amortization periods when appropriate to reflect changes in assumptions relating to the duration of expected performance periods. We could accelerate revenue recognition for non-refundable up-front payments, license fees and milestone payments in the event of early termination of programs or if our expectations change. Alternatively, we could decelerate such revenue recognition if programs are extended or delayed. While changes to such estimates have no impact on our reported cash flows, our reported revenue may be significantly influenced by our estimates of the period over which our obligations are expected to be performed and, therefore, over which revenue is recognized.
Balance Sheet Presentation of Co-Development Arrangements	'
	We record a receivable in accounts receivables on the balance sheet for the amounts due from Novartis for the reimbursement of our development costs in excess of the annual cap. We record expense in cost of partnered programs on the statement of operations and comprehensive loss for our share of the combined development costs and accrue these costs on our balance sheet in co-development liability.

OVERVIEW_AND_BASIS_OF_PRESENTA2

OVERVIEW AND BASIS OF PRESENTATION (Tables)	9 Months Ended
	Mar. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Schedule of partners that contributed greater than 10% of total revenue	'
	The following significant partnerships contributed greater than 10% of our total revenue during at least one of the periods set forth below. The revenue from these partners as a percentage of total revenue was as follows:
		Three Months Ended					Nine Months Ended
		March 31,					March 31,
		2014		2013			2014			2013
	AstraZeneca AB	0.2	%	0.2	%		14.1	%		0.4	%
	Celgene	12.6		32.3			7.7			21.5
	Genentech, Inc.	6.9		13.7			7.7			13.3
	Loxo Oncology, Inc.	16.4		—			22.2			—
	Novartis International Pharmaceutical Ltd.	48.2		34.5			31.2			23.5
	Oncothyreon Inc.	10.8		—			7.4			—
	Amgen Inc.	—		—			—			25.2
		95.1	%	80.7	%		90.3	%		83.9	%
Schedule of revenue from partnerships by geographic area based on the country in which partners are located	'
	The following table details revenue from partnerships by geographic area based on the country in which our partners are located (in thousands):
		Three Months Ended							Nine Months Ended
		March 31,							March 31,
		2014			2013				2014			2013
	North America	$	4,007		$	6,495			$	19,713		$	33,623
	Europe	3,765			3,460				16,318			10,539
	Asia Pacific	1			—				36			3
	Total revenue	$	7,773		$	9,955			$	36,067		$	44,165

MARKETABLE_SECURITIES_Tables

MARKETABLE SECURITIES (Tables)	9 Months Ended
	Mar. 31, 2014
Marketable Securities [Abstract]	'
Schedule of marketable securities	'
	Marketable securities consisted of the following as of March 31, 2014 (in thousands):
				Gross		Gross
		Amortized		Unrealized		Unrealized			Fair
		Cost		Gains		Losses			Value
	Short-term available-for-sale securities:
	U.S. treasury securities	$	57,388	$	7	$	—		$	57,395
	Mutual fund securities	319		—		—			319
		57,707		7		—			57,714
	Long-term available-for-sale securities:
	Mutual fund securities	593		—		—			593
		593		—		—			593
	Total	$	58,300	$	7	$	—		$	58,307
	Marketable securities consisted of the following as of June 30, 2013 (in thousands):
				Gross		Gross
		Amortized		Unrealized		Unrealized			Fair
		Cost		Gains		Losses			Value
	Short-term available-for-sale securities:
	U.S. treasury securities	$	47,130	$	—	$	(2	)	$	47,128
	Mutual fund securities	377		—		—			377
		47,507		—		(2		)	47,505
	Long-term available-for-sale securities:
	Mutual fund securities	465		—		—			465
		465		—		—			465
	Total	$	47,972	$	—	$	(2	)	$	47,970
Schedule of fair value measurement categories of marketable securities	'
	The estimated fair value of our marketable securities was classified into fair value measurement categories as follows (in thousands):
		March 31,		June 30,
		2014		2013
	Quoted prices in active markets for identical assets (Level 1)	$	58,307	$	47,970
	Quoted prices for similar assets observable in the marketplace (Level 2)	—		—
	Significant unobservable inputs (Level 3)	—		—
	Total	$	58,307	$	47,970
Schedule of amortized cost and estimated fair value of available-for-sale securities by contractual maturity	'
	As of March 31, 2014, the amortized cost and estimated fair value of available-for-sale securities by contractual maturity were as follows (in thousands):
		Amortized		Fair
		Cost		Value
	Due in one year or less	$	57,707	$	57,714
	Due in one year to three years	593		593
	Total	$	58,300	$	58,307

COLLABORATION_AND_LICENSE_AGRE1

COLLABORATION AND LICENSE AGREEMENTS (Tables)	9 Months Ended
	Mar. 31, 2014
Collaboration and License Agreements [Abstract]	'
Schedule of deferred revenue	'
	Deferred revenue related to collaboration and license agreements with our partners consisted of the following (in thousands):
		March 31,			June 30,
		2014			2013
	Celgene	$	8,234		$	—
	Genentech, Inc.	537			2,300
	Loxo Oncology, Inc.	375			—
	Novartis International Pharmaceutical Ltd.	803			12,053
	Other partners	113			—
	Total deferred revenue	10,062			14,353
	Less: Current portion	(5,733		)	(14,353		)
	Deferred revenue, long-term portion	$	4,329		$	—

LONGTERM_DEBT_Tables

LONG-TERM DEBT (Tables)	9 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
Schedule of long-term debt	'
	Long-term debt consists of the following (in thousands):
		March 31,			June 30,
		2014			2013
	Comerica term loan	$	14,550		$	14,550
	Convertible senior notes	132,250			132,250
	Long-term debt, gross	146,800			146,800
	Less: Unamortized debt discount	(44,125		)	(47,779		)
	Long-term debt, net	$	102,675		$	99,021
Schedule of interest expense	'
	The following table shows the details of our interest expense for all of our debt arrangements outstanding during the periods presented, including contractual interest, and amortization of debt discount, debt issuance costs and loan transaction fees that were charged to interest expense (in thousands):
		Three Months Ended						Nine Months Ended
		March 31,						March 31,
		2014			2013			2014		2013
	Comerica Term Loan
	Simple interest	$	118		$	120		$	360	$	364
	Amortization of fees paid for letters of credit	9			27			38		81
	Total interest expense on the Comerica term loan	127			147			398		445
	Convertible Senior Notes
	Contractual interest	992			—			2,987		—
	Amortization of debt discount	1,245			—			3,655		—
	Amortization of debt issuance costs	71			—			206		—
	Total interest expense on the convertible senior notes	2,308			—			6,848		—
	Deerfield Credit Facilities
	Simple interest	—			1,608			—		4,826
	Amortization of debt discounts and transaction fees	—			1,140			—		3,420
	Change in fair value of the embedded derivatives	—			(58		)	—		(235		)
	Total interest expense on the Deerfield credit facilities	—			2,690			—		8,011
	Total interest expense	$	2,435		$	2,837		$	7,246	$	8,456

OVERVIEW_AND_BASIS_OF_PRESENTA3

OVERVIEW AND BASIS OF PRESENTATION (Details) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Jun. 30, 2013

Jun. 30, 2012

Jun. 30, 2011

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Jun. 30, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Jun. 30, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Jun. 30, 2013

Jul. 31, 2013

Mar. 31, 2014

Jun. 30, 2013

Sep. 30, 2013

Jul. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

segment

Revenue

Revenue

Revenue

Revenue

North America

North America

North America

North America

Europe

Europe

Europe

Europe

Asia Pacific

Asia Pacific

Asia Pacific

Asia Pacific

AstraZeneca AB

AstraZeneca AB

AstraZeneca AB

AstraZeneca AB

Celgene

Celgene

Celgene

Celgene

Genentech, Inc.

Genentech, Inc.

Genentech, Inc.

Genentech, Inc.

Loxo Oncology, Inc.

Loxo Oncology, Inc.

Loxo Oncology, Inc.

Loxo Oncology, Inc.

Novartis International Pharmaceutical Ltd.

Novartis International Pharmaceutical Ltd.

Novartis International Pharmaceutical Ltd.

Novartis International Pharmaceutical Ltd.

Novartis International Pharmaceutical Ltd.

Novartis International Pharmaceutical Ltd.

Oncothyreon Inc.

Oncothyreon Inc.

Oncothyreon Inc.

Oncothyreon Inc.

Oncothyreon Inc.

Amgen Inc.

Amgen Inc.

Amgen Inc.

Amgen Inc.

Convertible Senior Notes, Due 2020

Term Loan

Term Loan

Loxo Oncology, Inc.

VentiRx Pharmaceuticals Inc.

VentiRx Pharmaceuticals Inc.

Loxo Oncology, Inc.

Loxo Oncology, Inc.

Other Long-term Assets

Binimetinib

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Revenue

Revenue

Revenue

Revenue

Revenue

Revenue

Revenue

Revenue

Revenue

Revenue

Revenue

Revenue

Revenue

Revenue

Revenue

Revenue

Revenue

Revenue

Revenue

Revenue

Accounts Receivable

Accounts Receivable

Revenue

Revenue

Revenue

Revenue

Accounts Receivable

Revenue

Revenue

Revenue

Revenue

Line of Credit

Line of Credit

Loxo Oncology, Inc.

drug_trial

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Credit Concentration Risk

Credit Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Credit Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Partner Concentration Risk

Comerica Loan and Security Agreement

Comerica Loan and Security Agreement

Liquidity

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Accumulated deficit

($689,699,000)

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($689,699,000)

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($632,679,000)

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Net loss

-24,932,000

-21,594,000

-57,020,000

-44,291,000

-61,900,000

-23,600,000

-56,300,000

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Number of drug trials

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3

Amount of cash, cash equivalents and marketable securities that must be maintained at Comerica and approved outside accounts, or an amount equal to the entire outstanding debt balance with Comerica must be maintained at Comerica

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22,000,000

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Long-term debt, gross

146,800,000

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146,800,000

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146,800,000

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14,550,000

14,550,000

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Equity Investment

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated fair value of shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,500,000

'

'

'

4,500,000

'

'

Investment in preferred stock

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,500,000

1,500,000

'

'

4,500,000

'

Licenses revenue

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,500,000

'

'

'

Convertible Senior Notes

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Stated interest rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.00%

'

'

'

'

'

'

'

'

'

Segments

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of reportable segments

'

'

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Concentration of Business Risks

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Concentration risk percentage

'

'

'

'

'

'

'

95.10%

80.70%

90.30%

83.90%

'

'

'

'

'

'

'

'

'

'

'

'

0.20%

0.20%

14.10%

0.40%

12.60%

32.30%

7.70%

21.50%

6.90%

13.70%

7.70%

13.30%

16.40%

0.00%

22.20%

0.00%

48.20%

34.50%

31.20%

23.50%

78.00%

91.00%

10.80%

0.00%

7.40%

0.00%

19.00%

0.00%

0.00%

0.00%

25.20%

'

'

'

'

'

'

'

'

'

'

Revenue

$7,773,000

$9,955,000

$36,067,000

$44,165,000

'

'

'

'

'

'

'

$4,007,000

$6,495,000

$19,713,000

$33,623,000

$3,765,000

$3,460,000

$16,318,000

$10,539,000

$1,000

$0

$36,000

$3,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

MARKETABLE_SECURITIES_Schedule

MARKETABLE SECURITIES (Schedule Of Marketable Securities) (Details) (USD $)	Mar. 31, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Marketable securities	'	'
Amortized Cost	$58,300	$47,972
Gross Unrealized Gains	7	0
Gross Unrealized Losses	0	-2
Fair Value	58,307	47,970
Short-term Investments	'	'
Marketable securities	'	'
Amortized Cost	57,707	47,507
Gross Unrealized Gains	7	0
Gross Unrealized Losses	0	-2
Fair Value	57,714	47,505
Short-term Investments | U.S. treasury securities	'	'
Marketable securities	'	'
Amortized Cost	57,388	47,130
Gross Unrealized Gains	7	0
Gross Unrealized Losses	0	-2
Fair Value	57,395	47,128
Short-term Investments | Mutual fund securities	'	'
Marketable securities	'	'
Amortized Cost	319	377
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	319	377
Long-term Investments	'	'
Marketable securities	'	'
Amortized Cost	593	465
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	593	465
Long-term Investments | Mutual fund securities	'	'
Marketable securities	'	'
Amortized Cost	593	465
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	$593	$465

MARKETABLE_SECURITIES_Schedule1

MARKETABLE SECURITIES (Schedule Of Fair Value Measurement Categories) (Details) (USD $)	Mar. 31, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Fair value measurement categories	'	'
Fair value	$58,307	$47,970
Fair Value, Measurements, Recurring | Quoted prices in active markets for identical assets (Level 1)	'	'
Fair value measurement categories	'	'
Fair value	58,307	47,970
Fair Value, Measurements, Recurring | Quoted prices for similar assets observable in the marketplace (Level 2)	'	'
Fair value measurement categories	'	'
Fair value	0	0
Fair Value, Measurements, Recurring | Significant unobservable inputs (Level 3)	'	'
Fair value measurement categories	'	'
Fair value	0	0
Fair Value, Measurements, Recurring | Total fair value	'	'
Fair value measurement categories	'	'
Fair value	$58,307	$47,970

MARKETABLE_SECURITIES_Schedule2

MARKETABLE SECURITIES (Schedule of Amortized Cost And Estimated Fair Value) (Details) (USD $)	Mar. 31, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]	'	'
Due in one year or less	$57,707	'
Due in one year to three years	593	'
Amortized Cost	58,300	'
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]	'	'
Due in one year or less	57,714	'
Due in one year to three years	593	'
Fair Value	$58,307	$47,970

COLLABORATION_AND_LICENSE_AGRE2

COLLABORATION AND LICENSE AGREEMENTS (Details) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

124 Months Ended

3 Months Ended

9 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

1 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Sep. 30, 2011

Mar. 31, 2014

Mar. 31, 2014

Sep. 30, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Sep. 30, 2013

Mar. 31, 2014

Jul. 31, 2013

Jun. 30, 2013

Mar. 31, 2011

Mar. 31, 2014

Dec. 31, 2013

Sep. 30, 2013

Mar. 31, 2013

Dec. 31, 2012

Jun. 30, 2011

Jun. 30, 2010

Mar. 31, 2014

Mar. 31, 2013

31-May-13

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Jul. 31, 2013

Jul. 31, 2013

Genentech Chk-1 Agreement

Genentech Chk-1 Agreement

Celgene

Celgene

Celgene

Genentech, Inc.

Genentech, Inc.

Genentech, Inc.

Genentech, Inc.

Genentech 2003 Collaboration Agreement

Genentech 2003 Collaboration Agreement

Genentech 2003 Collaboration Agreement

Genentech 2003 Collaboration Agreement

Loxo Oncology, Inc.

Loxo Oncology, Inc.

Loxo Oncology, Inc.

Loxo Oncology, Inc.

Novartis International Pharmaceutical Ltd.

Novartis International Pharmaceutical Ltd.

Novartis International Pharmaceutical Ltd.

Novartis International Pharmaceutical Ltd.

Novartis International Pharmaceutical Ltd.

Novartis International Pharmaceutical Ltd.

Novartis International Pharmaceutical Ltd.

Novartis International Pharmaceutical Ltd.

Novartis International Pharmaceutical Ltd.

Novartis International Pharmaceutical Ltd.

Novartis International Pharmaceutical Ltd.

Oncothyreon Inc.

Oncothyreon Inc.

Oncothyreon Inc.

Oncothyreon Inc.

Oncothyreon Inc.

Oncothyreon Inc.

Oncothyreon Inc.

Loxo Oncology, Inc.

Loxo Oncology, Inc.

Deliverable

Deliverable

Renewal

Deliverable

Reimbursable Expenses

Reimbursable Expenses

U.S.

Outside of the U.S.

drug

Deliverable

Entity

Collaboration and License Agreements, by Type [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Upfront payment received

'

'

'

'

$28,000,000

'

'

$11,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$10,000,000

'

'

'

'

'

'

'

'

Additional aggregate potential nonrefundable milestone payments

'

'

'

'

'

380,000,000

376,000,000

'

376,000,000

'

'

'

'

'

24,500,000

'

24,500,000

435,000,000

'

435,000,000

'

'

'

408,000,000

'

'

'

'

'

'

408,000,000

'

'

'

'

'

'

'

'

'

'

Number of non-contingent deliverables related to agreement

'

'

'

'

'

3

'

'

3

'

'

'

'

'

'

'

'

'

'

3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3

'

'

'

'

'

'

Collaborative Arrangement, Estimated Option Term Under Agreement

'

'

'

'

'

'

'

'

'3 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Collaborative Arrangement, Estimated Option Term Under Agreement, Extension Period

'

'

'

'

'

'

'

'

'1 year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Collaboration revenue

3,486,000

3,107,000

12,428,000

10,825,000

'

'

976,000

'

2,800,000

'

'

'

'

266,000

0

2,300,000

'

1,300,000

'

3,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

839,000

2,700,000

618,000

2,000,000

'

'

'

'

Notice period for termination of agreement by collaborator

'

'

'

'

'

'60 days

'

'

'6 months

'

'

'

'

'

'4 months

'

'

'

'

'6 months

'

'

'

'

'

'

'

'

'

'

'180 days

'

'

'

'

'

'

'

'

'

'

Upfront and milestone payments received

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

23,000,000

'

'

'

'

'

'

'

'

5,000,000

'

'

10,000,000

45,000,000

'

'

'

'

'

'

'

'

'

'

'

Number of partnered drugs

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

License and milestone revenue

4,287,000

6,848,000

23,639,000

33,340,000

'

'

'

'

'

537,000

1,100,000

2,800,000

3,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Collaborative Arrangement, Term of Discovery Research Phase

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'3 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Collaborative Arrangement, Number of Agreement Extensions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Collaborative Arrangement, Term of Discovery Research Phase, Renewal Period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'1 year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cost Method Investment, Ownership Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

19.90%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Estimated fair value of shares

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,500,000

4,500,000

Licenses revenue

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,500,000

'

'

'

'

2,500,000

'

'

2,500,000

'

'

'

7,500,000

7,500,000

'

'

'

'

'

'

'

'

'

Collaborative Arrangement, Period After Which Partner Has Right to Terminate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'1 year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Milestone payment earned

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,000,000

10,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Milestone revenue

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,300,000

'

'

938,000

'

'

'

3,800,000

2,800,000

'

'

'

'

'

'

'

'

'

Notice period for termination in the event of a material breach of a material obligation under the agreement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'90 days

'

'

'

'

'

'

'

'

'

'

Percentage of reimbursement of development costs by collaborator during the first two years of the co-development period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

Co-development payment issued to partner

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11,300,000

'

'

9,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Entity's share of combined development costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,700,000

'

'

3,600,000

'

'

'

14,200,000

7,800,000

'

'

'

'

'

'

'

'

'

Payable recorded for entity's portion of the development costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11,000,000

'

12,000,000

'

'

'

'

'

'

12,000,000

'

'

'

'

'

'

'

'

'

'

Receivable for reimbursable development costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$3,700,000

'

$3,400,000

'

'

'

'

'

'

$3,400,000

'

'

'

'

'

'

'

'

'

'

Percentage of development costs responsible for

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

'

'

'

Co-promotion right, percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

Percentage share of profit or loss

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

'

'

'

Percentage of profit that royalty on net sales is intended to approximate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

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'

'

'

'

'

'

'

'

'

'

'

'

'

'

50.00%

'

'

Number of companies that share equally in proceeds from sublicense marketing rights

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'

'

'

'

'

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'

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2

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'

COLLABORATION_AND_LICENSE_AGRE3

COLLABORATION AND LICENSE AGREEMENTS (Schedule Of Deferred Revenue) (Details) (USD $)	Mar. 31, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Collaborative Arrangements and Non-collaborative Arrangements [Line Items]	'	'
Total deferred revenue	$10,062	$14,353
Less: Current portion	-5,733	-14,353
Deferred revenue, long-term portion	4,329	0
Celgene	'	'
Collaborative Arrangements and Non-collaborative Arrangements [Line Items]	'	'
Total deferred revenue	8,234	0
Genentech, Inc.	'	'
Collaborative Arrangements and Non-collaborative Arrangements [Line Items]	'	'
Total deferred revenue	537	2,300
Loxo Oncology, Inc.	'	'
Collaborative Arrangements and Non-collaborative Arrangements [Line Items]	'	'
Total deferred revenue	375	0
Novartis International Pharmaceutical Ltd.	'	'
Collaborative Arrangements and Non-collaborative Arrangements [Line Items]	'	'
Total deferred revenue	803	12,053
Other Partners	'	'
Collaborative Arrangements and Non-collaborative Arrangements [Line Items]	'	'
Total deferred revenue	$113	$0

LONGTERM_DEBT_Narrative_Detail

LONG-TERM DEBT (Narrative) (Details) (USD $)	0 Months Ended	9 Months Ended
	Jun. 10, 2013	Mar. 31, 2014	Jun. 30, 2013
Debt Instrument [Line Items]	'	'	'
Long-term debt, outstanding	'	$146,800,000	$146,800,000
Comerica Loan and Security Agreement | Line of Credit | Comerica Bank	'	'	'
Debt Instrument [Line Items]	'	'	'
Financial ratio required to be maintained under covenant	'	1.25	'
Comerica Loan and Security Agreement | Line of Credit | Term Loan	'	'	'
Debt Instrument [Line Items]	'	'	'
Long-term debt, outstanding	'	14,550,000	14,550,000
Amount of cash, cash equivalents and marketable securities that must be maintained at Comerica and approved outside accounts, or an amount equal to the entire outstanding debt balance with Comerica must be maintained at Comerica	'	22,000,000	'
Comerica Loan and Security Agreement | Line of Credit | Term Loan | Comerica Bank	'	'	'
Debt Instrument [Line Items]	'	'	'
Maximum borrowing capacity	'	15,000,000	'
Long-term debt, outstanding	'	14,550,000	'
Balance of cash, cash equivalents and marketable securities maintained at Comerica, if amount is greater than or equal to, interest is Scenario One	'	10,000,000	'
Balance of cash, cash equivalents and marketable securities maintained at Comerica, if amount is less than, interest is Scenario Two	'	10,000,000	'
Interest rate at period end (as a percent)	'	3.25%	'
Amount of cash, cash equivalents and marketable securities that must be maintained at Comerica and approved outside accounts, or an amount equal to the entire outstanding debt balance with Comerica must be maintained at Comerica	'	22,000,000	'
Comerica Loan and Security Agreement | Line of Credit | Term Loan | Comerica Bank | Quoted prices for similar assets observable in the marketplace (Level 2)	'	'	'
Debt Instrument [Line Items]	'	'	'
Fair value of term loan	'	14,600,000	14,600,000
Comerica Loan and Security Agreement | Line of Credit | Revolving line of credit | Comerica Bank	'	'	'
Debt Instrument [Line Items]	'	'	'
Maximum borrowing capacity	'	6,800,000	'
Convertible Senior Notes, Due 2020	'	'	'
Debt Instrument [Line Items]	'	'	'
Stated interest rate	'	3.00%	'
Convertible Senior Notes, Due 2020 | Senior Subordinated Notes	'	'	'
Debt Instrument [Line Items]	'	'	'
Long-term debt, outstanding	'	132,250,000	132,250,000
Stated interest rate	'	3.00%	'
Debt instrument, face amount	132,300,000	'	'
Proceeds from debt issuance	128,000,000	'	'
Convertible debt, conversion rate	'	141.8641	'
Convertible debt, conversion price	'	$7.05	'
Percentage of principal amount of convertible debt required to be repurchased upon qualifying change in control or termination of trading of common stock	'	100.00%	'
Convertible debt, threshold percentage of stock price trigger	'	130.00%	'
Convertible debt, threshold trading days	'	20	'
Convertible debt, threshold consecutive trading days	'	'30 days	'
Convertible debt, threshold consecutive trading days, number of days immediately prior to redemption notice date	'	'7 days	'
Convertible debt, redemption price, percentage of principal amount to be redeemed	'	100.00%	'
Convertible debt, interest rate, effective percentage	10.25%	'	'
Convertible debt, liability component	84,200,000	'	'
Convertible debt, equity component	48,000,000	'	'
Underwriting discount and offering expenses	4,300,000	'	'
Unamortized debt issuance costs	'	2,500,000	'
Convertible Senior Notes, Due 2020 | Senior Subordinated Notes | Other Long-term Assets	'	'	'
Debt Instrument [Line Items]	'	'	'
Underwriting discount and offering expenses	2,700,000	'	'
Convertible Senior Notes, Due 2020 | Senior Subordinated Notes | Additional paid-in capital	'	'	'
Debt Instrument [Line Items]	'	'	'
Underwriting discount and offering expenses	1,600,000	'	'
Convertible Senior Notes, Due 2020 | Senior Subordinated Notes | Quoted prices for similar assets observable in the marketplace (Level 2)	'	'	'
Debt Instrument [Line Items]	'	'	'
Fair value of notes	'	$137,400,000	$126,000,000
Scenario One [Member] | Comerica Loan and Security Agreement | Line of Credit | Term Loan | Comerica Bank | Prime rate	'	'	'
Debt Instrument [Line Items]	'	'	'
Description of variable interest rate basis	'	'Prime Rate	'
Scenario Two [Member] | Comerica Loan and Security Agreement | Line of Credit | Term Loan | Comerica Bank | Prime rate	'	'	'
Debt Instrument [Line Items]	'	'	'
Description of variable interest rate basis	'	'Prime Rate	'
Basis spread on variable interest rate (up to)	'	2.00%	'

LONGTERM_DEBT_Schedule_of_Long

LONG-TERM DEBT (Schedule of Long-Term Debt) (Details) (USD $)	Mar. 31, 2014	Jun. 30, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'
Long-term debt, gross	$146,800	$146,800
Less: Unamortized debt discount	-44,125	-47,779
Long-term debt, net	102,675	99,021
Senior Subordinated Notes | Convertible Senior Notes, Due 2020	'	'
Debt Instrument [Line Items]	'	'
Long-term debt, gross	132,250	132,250
Term Loan | Line of Credit | Comerica Loan and Security Agreement	'	'
Debt Instrument [Line Items]	'	'
Long-term debt, gross	$14,550	$14,550

LONGTERM_DEBT_Summary_of_Inter

LONG-TERM DEBT (Summary of Interest Expense) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Debt Instrument [Line Items]	'	'	'	'
Amortization of debt discounts and transaction fees	'	'	$3,899	$3,266
Total interest expense	2,435	2,837	7,246	8,456
Comerica Loan and Security Agreement | Term Loan	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'
Simple interest	118	120	360	364
Amortization of transaction fees and debt issuance costs	9	27	38	81
Total interest expense	127	147	398	445
Convertible Senior Notes, Due 2020	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'
Simple interest	992	0	2,987	0
Amortization of transaction fees and debt issuance costs	71	0	206	0
Amortization of debt discount	1,245	0	3,655	0
Total interest expense	2,308	0	6,848	0
Deerfield credit facilities	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'
Simple interest	0	1,608	0	4,826
Amortization of debt discounts and transaction fees	0	1,140	0	3,420
Change in fair value of the embedded derivatives	0	-58	0	-235
Total interest expense	$0	$2,690	$0	$8,011

STOCKHOLDERS_DEFICIT_Details

STOCKHOLDERS' DEFICIT (Details) (USD $)	9 Months Ended
Share data in Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 27, 2013
			Common Stock	Common Stock
STOCKHOLDERS' DEFICIT	'	'	'	'
Dollar amount of stock that may be sold under the agreement	'	'	'	$75,000,000
Commission under sales agreement	'	'	'	2.00%
Issuance of stock (in shares)	'	'	8,000	'
Average Share Price	'	'	$6.23	'
Proceeds from the issuance of common stock	50,155,000	75,555,000	50,200,000	'
Commissions	'	'	$1,000,000	'

RESTRUCTURING_CHARGES_Details

RESTRUCTURING CHARGES (Details) (Fiscal 2014 Restructuring, Reduction in workforce, USD $)	0 Months Ended	3 Months Ended
In Thousands, unless otherwise specified	Aug. 05, 2013	Dec. 31, 2013	Sep. 30, 2013
Restructuring Cost and Reserve [Line Items]	'	'	'
Restructuring and Related Cost, Number of Positions Eliminated, Period Percent	20.00%	'	'
Restructuring charge	'	'	$2,800
Payment for restructuring expense	'	194	2,600
Research and Development for Proprietary Drug Discovery	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Restructuring charge	'	'	2,200
General and Administrative Expenses	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'
Restructuring charge	'	'	$602