Impax Laboratories (IPXL) 10-Q 2 May 14 2014 Q1 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	3 Months Ended
	Mar. 31, 2014	Apr. 25, 2014
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'IMPAX LABORATORIES INC	'
Document Type	'10-Q	'
Current Fiscal Year End Date	'--12-31	'
Entity Common Stock, Shares Outstanding	'	70,056,809
Amendment Flag	'false	'
Entity Central Index Key	'0001003642	'
Entity Current Reporting Status	'Yes	'
Entity Voluntary Filers	'No	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Well-known Seasoned Issuer	'Yes	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'

Consolidated_Balance_Sheets_Cu

Consolidated Balance Sheets (Current Period Unaudited) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Current assets:	'	'
Cash and cash equivalents	$129,372,000	$184,612,000
Short-term investments	261,055,000	228,521,000
Accounts receivable, net	119,521,000	112,993,000
Inventory, net	76,159,000	70,107,000
Deferred income taxes	51,333,000	50,788,000
Prepaid expenses and other current assets	12,003,000	12,721,000
Total current assets	649,443,000	659,742,000
Property, plant and equipment, net	189,661,000	188,191,000
Other assets	55,205,000	57,820,000
Deferred income taxes	35,958,000	33,926,000
Intangible assets, net	24,364,000	29,670,000
Goodwill	27,574,000	27,574,000
Total assets	982,205,000	996,923,000
Current liabilities:	'	'
Accounts payable	27,646,000	26,824,000
Accrued expenses	81,752,000	111,523,000
Accrued profit sharing and royalty expenses	10,617,000	11,560,000
Deferred revenue	3,200,000	3,983,000
Total current liabilities	123,215,000	153,890,000
Deferred revenue	4,000,000	4,267,000
Other liabilities	29,806,000	28,563,000
Total liabilities	157,021,000	186,720,000
Commitments and contingencies (Notes 9 and 17)	'	'
Stockholders’ equity:	'	'
Preferred stock, $0.01 par value, 2,000,000 shares authorized, 0 shares outstanding at March 31, 2014 and December 31, 2013	'	'
Common stock, $0.01 par value, 90,000,000 shares authorized and 70,300,538 and 69,927,609 shares issued at March 31, 2014 and December 31, 2013, respectively	703,000	699,000
Additional paid-in capital	347,635,000	336,648,000
Treasury stock - 243,729 shares	-2,157,000	-2,157,000
Accumulated other comprehensive (loss) income	-1,295,000	1,140,000
Retained earnings	480,298,000	473,873,000
Total stockholders’ equity	825,184,000	810,203,000
Total liabilities and stockholders’ equity	$982,205,000	$996,923,000

Consolidated_Balance_Sheets_Cu1

Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Preferred Stock, par value (in Dollars per share)	$0.01	$0.01
Preferred Stock, shares authorized	2,000,000	2,000,000
Preferred Stock, shares outstanding	0	0
Common stock, par value (in Dollars per share)	$0.01	$0.01
Common stock, shares authorized	90,000,000	90,000,000
Common stock, shares issued	70,300,538	69,927,609
Treasury stock, shares	243,729	243,729

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenues:	'	'
Revenues	$118,718,000	$148,489,000
Cost of revenues	61,096,000	90,618,000
Gross profit	57,622,000	57,871,000
Operating expenses:	'	'
Research and development	21,741,000	19,605,000
Patent litigation expense	2,173,000	4,278,000
Selling, general and administrative	25,477,000	29,717,000
Total operating expenses	49,391,000	53,600,000
Income from operations	8,231,000	4,271,000
Other income, net	76,000	149,456,000
Interest income	388,000	276,000
Interest expense	-65,000	-283,000
Income before income taxes	8,630,000	153,720,000
Provision for income taxes	2,205,000	48,278,000
Net income	6,425,000	105,442,000
Net income per share:	'	'
Basic (in Dollars per share)	$0.09	$1.59
Diluted (in Dollars per share)	$0.09	$1.55
Weighted average common shares outstanding:	'	'
Basic (in Shares)	67,702,296	66,487,470
Diluted (in Shares)	69,938,872	68,178,355
Global Division [Member]	'	'
Revenues:	'	'
Revenues	109,141,000	101,636,000
Cost of revenues	57,022,000	61,444,000
Operating expenses:	'	'
Research and development	11,217,000	11,711,000
Patent litigation expense	2,173,000	4,278,000
Income before income taxes	36,346,000	19,160,000
Impax Division [Member]	'	'
Revenues:	'	'
Revenues	9,577,000	46,853,000
Cost of revenues	4,074,000	29,174,000
Operating expenses:	'	'
Research and development	10,524,000	7,894,000
Income before income taxes	($14,242,000)	($2,979,000)

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Net income	$6,425	$105,442
Currency translation adjustments	-2,435	-3,497
Comprehensive income	$3,990	$101,945

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:	'	'
Net income	$6,425	$105,442
Adjustments to reconcile net income to net cash (used in) provided by operating activities:	'	'
Depreciation and amortization	8,015	12,397
Charge for licensing agreement	2,000	'
Intangible asset impairment charge	2,876	'
Provision for inventory reserves	1,952	22,810
Accretion of interest income on short-term investments	-223	-158
Deferred income taxes – net and uncertain tax positions	-2,879	-2,799
Tax impact related to the exercise of employee stock options	-920	3
Recognition of deferred revenue	-1,050	-1,113
Accrued profit sharing and royalty expense	10,608	22,541
Payments of profit sharing and royalty expense	-11,537	-4,925
Share-based compensation expense	4,386	4,359
Other receivable	'	-102,049
Changes in certain assets and liabilities:	'	'
Accounts receivable	-6,528	-21,357
Inventory	-6,527	-15,475
Prepaid expenses and other assets	976	13,228
Accounts payable and accrued expenses	-26,163	23,014
Other liabilities	1,513	2,527
Net cash (used in) provided by operating activities	-17,076	58,445
Cash flows from investing activities:	'	'
Purchase of short-term investments	-133,754	-60,515
Maturities of short-term investments	101,443	65,993
Purchases of property, plant and equipment	-9,782	-9,361
Payment for licensing agreement	-2,000	'
Net cash used in investing activities	-44,093	-3,883
Cash flows from financing activities:	'	'
Tax impact related to the exercise of employee stock options and restricted stock	920	-3
Proceeds from exercise of stock options and ESPP	5,977	1,554
Net cash provided by financing activities	6,897	1,551
Effect of exchange rate changes on cash and cash equivalents	-968	-698
Net (decrease) increase in cash and cash equivalents	-55,240	55,415
Cash and cash equivalents, beginning of period	184,612	142,162
Cash and cash equivalents, end of period	$129,372	$197,577

Supplemental_Cash_Flow_Informa

Supplemental Cash Flow Information	3 Months Ended
	Mar. 31, 2014
Supplemental Cash Flow Elements [Abstract]	'
Cash Flow, Supplemental Disclosures [Text Block]	'
	Supplemental disclosure of non-cash investing and financing activities:
			Three Months Ended
	(in $000's)		March 31,		March 31,
			2014		2013
	Cash paid for interest	$	1	$	87
	Cash paid for income taxes	$	21,024	$	222
	Accrued vendor invoices of approximately $4,165,000 and $4,273,000 at March 31, 2014 and 2013, respectively, are excluded from the purchase of property, plant, and equipment and the change in accounts payable and accrued expenses. Depreciation expense was $4,973,000 and $4,760,000 for the three months ended March 31, 2014 and 2013, respectively.

Note_1_The_Company_Basis_of_Pr

Note 1 - The Company & Basis of Presentation	3 Months Ended
	Mar. 31, 2014
Disclosure Text Block [Abstract]	'
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	'
	1. THE COMPANY & BASIS OF PRESENTATION
	Impax Laboratories, Inc. (“Impax” or “Company”) is a technology-based, specialty pharmaceutical company. The Company has two reportable segments, referred to as the “Global Pharmaceuticals Division” (“Global Division”) and the “Impax Pharmaceuticals Division” (“Impax Division”).
	The Global Division develops, manufactures, sells, and distributes generic pharmaceutical products primarily through four sales channels: the “Global products” sales channel, for generic pharmaceutical prescription products the Company sells directly to wholesalers, large retail drug chains, and others; the “Private Label” sales channel, for generic pharmaceutical over-the-counter (“OTC”) and prescription products the Company sells to unrelated third-party customers who in turn sell the product to third parties under their own label; the “Rx Partner” sales channel, for generic prescription products sold through unrelated third-party pharmaceutical entities under their own label pursuant to alliance agreements; and the “OTC Partner” sales channel, for generic pharmaceutical OTC products sold through unrelated third-party pharmaceutical entities under their own labels pursuant to alliance and supply agreements. Revenues from the “Global Products” sales channel and the “Private Label” sales channel are reported under the caption “Global Product sales, net” in “Note 18 – Supplementary Financial Information.” The Company also generates revenue from research and development services provided under a joint development agreement with an unrelated third-party pharmaceutical company, and reports such revenue under the caption “Other Revenues” in “Note 18 – Supplementary Financial Information.” The Company provides these services through the research and development group in the Global Division. Revenues from the “OTC Partner” sales channel are also reported under the caption “Other Revenues” in “Note 18 – Supplementary Financial Information.”
	The Impax Division is engaged in the development of proprietary brand pharmaceutical products that the Company believes represent improvements to already-approved pharmaceutical products addressing central nervous system (“CNS”) disorders. The Impax Division currently has one internally developed late stage branded pharmaceutical product candidate, RYTARY™ (IPX066), an extended release capsule formulation of carbidopa-levodopa for the symptomatic treatment of Parkinson’s disease, for which the New Drug Application (“NDA”) was accepted for filing by the U.S. Food and Drug Administration (“FDA”) in February 2012 and for which the Company received a Complete Response Letter from the FDA in January 2013. In April 2014, after discussions with the FDA, the Company resubmitted an NDA for RYTARY™. The NDA was accepted for filing by the FDA in April 2014 and the FDA has informed the Company that the Prescription Drug User Fee Act (“PDUFA”) date is October 9, 2014. The Company has also initiated the preparation of required documents for a European Market Authorization Application filing for RYTARY™, currently targeted for filing during the second half of 2014. In addition to RYTARY™, the Impax Division has a number of other product candidates that are in varying stages of development. The Impax Division is also engaged in the sale and distribution of Zomig® (zolmitriptan) products, indicated for the treatment of migraine headaches, under the terms of a Distribution, License, Development and Supply Agreement (“AZ Agreement”) with AstraZeneca UK Limited (“AstraZeneca”) in the United States and in certain United States territories. Revenues from Impax-labeled branded Zomig® products are reported under the caption “Impax Product sales, net” in “Note 18 – Supplementary Financial Information.” Finally, the Company generates revenue in the Impax Division from research and development services provided under a development and license agreement with another unrelated third-party pharmaceutical company, and reports such revenue under the caption “Other Revenues” in “Note 18 – Supplementary Financial Information.”
	In California, the Company utilizes a combination of owned and leased facilities mainly located in Hayward. The Company’s primary properties in California consist of a leased office building used as the Company’s corporate headquarters, in addition to five properties it owns, including a research and development center facility and a manufacturing facility. Additionally, the Company leases three facilities in Hayward, utilized for additional research and development, administrative services, equipment storage and quality assurance support. In Pennsylvania, the Company owns a packaging, warehousing, and distribution center located in Philadelphia and leases a facility in New Britain used for sales and marketing, finance, and administrative personnel, as well as providing additional warehouse space. Outside the United States, in Taiwan, Republic of China (“R.O.C.”), the Company owns a manufacturing facility.
	The accompanying unaudited interim consolidated financial statements of the Company, have been prepared based upon United States Securities and Exchange Commission (“SEC”) rules permitting reduced disclosure for interim periods, and include all adjustments necessary for a fair presentation of statements of operations, statements of comprehensive income, statements of cash flows, and financial condition for the interim periods shown, including normal recurring accruals and other items, noted below. While certain information and disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to SEC rules and regulations, the Company believes the disclosures are adequate to make the information presented not misleading. The unaudited interim consolidated financial statements of the Company include the accounts of the operating parent company, Impax Laboratories, Inc., its wholly owned subsidiaries, including Impax Laboratories (Taiwan) Inc., Impax Laboratories USA, LLC, ThoRx Laboratories, Inc., Impax Laboratories (Netherlands) BV and Impax Laboratories (Netherlands) CV, and an equity investment in Prohealth Biotech, Inc. (“Prohealth”), in which the Company held a 57.54% majority ownership interest at March 31, 2014. All significant intercompany accounts and transactions have been eliminated.
	The unaudited results of operations and cash flows for the interim period are not necessarily indicative of the expected results of the Company’s operations for any other interim period or for the full year ending December 31, 2014. The unaudited interim consolidated financial statements and footnotes should be read in conjunction with the consolidated financial statements and footnotes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013 as filed with the SEC, wherein a more complete discussion of significant accounting policies and certain other information can be found.
	The preparation of financial statements in conformity with GAAP and the rules and regulations of the SEC requires the use of estimates and assumptions, based on complex judgments considered reasonable, which affect the reported amounts of assets and liabilities and disclosure of contingent assets and contingent liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. The most significant judgments are employed in estimates used in determining values of tangible and intangible assets, legal contingencies, tax assets and tax liabilities, fair value of share-based compensation related to equity incentive awards issued to employees and directors, and estimates used in applying the Company’s revenue recognition policy including those related to accrued chargebacks, rebates, product returns, Medicare, Medicaid, and other government rebate programs, shelf-stock adjustments, and the timing and amount of deferred and recognized revenue and deferred and amortized product manufacturing costs related to alliance and collaboration agreements. Actual results may differ from estimated results. Certain prior year amounts have been reclassified to conform to the current year presentation.
	In the normal course of business, the Company is subject to loss contingencies, such as legal proceedings and claims arising out of its business, covering a wide range of matters, including, among others, patent litigation, and product and clinical trial liability. In accordance with Financial Accounting Standards Board (“FASB”) Accounting Standard Codification (“ASC”) Topic 450, "Contingencies," the Company records accrued loss contingencies when it is probable a liability has been incurred and the amount of loss can be reasonably estimated. The Company, in accordance with FASB ASC Topic 450, does not recognize gain contingencies until realized.
	Management transition
	During the three month period ended March 31, 2014, the Company announced a management change. The current Senior Vice President, Global Operations announced plans to retire and a Senior Vice President, Technical Operations was appointed. In conjunction with the transition, the Company recorded $0.7 million in separation charges and accelerated share-based compensation expense.

Note_2_Revenue_Recognition

Note 2 - Revenue Recognition	3 Months Ended
	Mar. 31, 2014
Revenue Recognition [Abstract]	'
Revenue Recognition [Text Block]	'
	2. REVENUE RECOGNITION
	The Company recognizes revenue when the earnings process is complete, which under SEC Staff Accounting Bulletin No. 104, Topic No. 13, “Revenue Recognition” (“SAB 104”), is when revenue is realized or realizable and earned, there is persuasive evidence a revenue arrangement exists, delivery of goods or services has occurred, the sales price is fixed or determinable, and collectability is reasonably assured.
	The Company accounts for revenue arrangements with multiple deliverables in accordance with FASB ASC Topic 605-25, revenue recognition for arrangements with multiple elements, which addresses the determination of whether an arrangement involving multiple deliverables contains more than one unit of accounting. A delivered item within an arrangement is considered a separate unit of accounting only if both of the following criteria are met:
		●	the delivered item has value to the customer on a stand-alone basis; and
		●	if the arrangement includes a general right of return relative to the delivered item, delivery or performance of the undelivered item is considered probable and substantially in the control of the vendor.
	Under FASB ASC Topic 605-25, if both of the criteria above are not met, then separate accounting for the individual deliverables is not appropriate. Revenue recognition for arrangements with multiple deliverables constituting a single unit of accounting is recognized generally over the greater of the term of the arrangement or the expected period of performance, either on a straight-line basis or on a modified proportional performance basis.
	The Company accounts for milestones related to research and development activities in accordance with FASB ASC Topic 605-28, milestone method of revenue recognition. FASB ASC Topic 605-28 allows for the recognition of consideration, which is contingent on the achievement of a substantive milestone, in its entirety in the period the milestone is achieved. A milestone is considered to be substantive if all of the following criteria are met: the milestone is commensurate with either: (1) the performance required to achieve the milestone, or (2) the enhancement of the value of the delivered items resulting from the performance required to achieve the milestone; the milestone relates solely to past performance; and, the milestone is reasonable relative to all of the deliverables and payment terms within the agreement.
	Global Product sales, net, and Impax Product sales, net:
	Global Product sales, net and Impax Product sales, net include revenue recognized related to shipments of generic and branded pharmaceutical products to the Company’s customers, primarily drug wholesalers and retail chains. Gross sales revenue is recognized at the time title and risk of loss passes to the customer, which is generally when product is received by the customer. Global and Impax Product revenue, net may include deductions from the gross sales price related to estimates for chargebacks, rebates, distribution service fees, returns, shelf-stock, and other pricing adjustments. The Company records an estimate for these deductions in the same period when the revenue is recognized. A summary of each of these deductions is as follows:
	Chargebacks
	The Company has agreements establishing contract prices for certain products with certain indirect customers, such as managed care organizations, hospitals and government agencies who purchase products from drug wholesalers. The contract prices are lower than the prices the customer would otherwise pay to the wholesaler, and the price difference is referred to as a chargeback, which generally takes the form of a credit memo issued by the Company to reduce the invoiced gross selling price charged to the wholesaler. An estimated accrued provision for chargeback deductions is recognized at the time of product shipment. The primary factors considered when estimating the provision for chargebacks are the average historical chargeback credits given, the mix of products shipped, and the amount of inventory on hand at the major drug wholesalers with whom the Company does business. The Company also monitors actual chargebacks granted and compares them to the estimated provision for chargebacks to assess the reasonableness of the chargeback reserve at each quarterly balance sheet date.
	Rebates
	The Company maintains various rebate programs with its customers in an effort to maintain a competitive position in the marketplace and to promote sales and customer loyalty. The rebates generally take the form of a credit memo to reduce the invoiced gross selling price charged to a customer for products shipped. An estimated accrued provision for rebate deductions is recognized at the time of product shipment. The primary factors the Company considers when estimating the provision for rebates are the average historical experience of aggregate credits issued, the mix of products shipped and the historical relationship of rebates as a percentage of total gross product sales, the contract terms and conditions of the various rebate programs in effect at the time of shipment, and the amount of inventory on hand at the major drug wholesalers with whom the Company does business. The Company also monitors actual rebates granted and compares them to the estimated provision for rebates to assess the reasonableness of the rebate reserve at each quarterly balance sheet date.
	Distribution Service Fees
	The Company pays distribution service fees to several of its wholesaler customers related to sales of its Impax products. The wholesalers are generally obligated to provide the Company with periodic outbound sales information as well as inventory levels of the Company’s products held in their warehouses. Additionally, the wholesalers have agreed to manage the variability of their purchases and inventory levels within specified days on hand limits. An accrued provision for distribution service fees is recognized at the time products are shipped to wholesalers.
	Returns
	The Company allows its customers to return product if approved by authorized personnel in writing or by telephone with the lot number and expiration date accompanying any request and if such products are returned within six months prior to or until twelve months following, the products’ expiration date. The Company estimates and recognizes an accrued provision for product returns as a percentage of gross sales based upon historical experience. The product return reserve is estimated using a historical lag period, which is the time between when the product is sold and when it is ultimately returned and estimated return rates which may be adjusted based on various assumptions including changes to internal policies and procedures, changes in business practices, and commercial terms with customers, competitive position of each product, amount of inventory in the wholesaler supply chain, the introduction of new products, and changes in market sales information. The Company also considers other factors, including significant market changes which may impact future expected returns, and actual product returns. The Company monitors actual returns on a quarterly basis and may record specific provisions for returns it believes are not covered by historical percentages.
	Shelf-Stock Adjustments
	Based upon competitive market conditions, the Company may reduce the selling price of certain Global Division products. The Company may issue a credit against the sales amount to a customer based upon their remaining inventory of the product in question, provided the customer agrees to continue to make future purchases of product from the Company. This type of customer credit is referred to as a shelf-stock adjustment, which is the difference between the original selling price and the revised lower sales price, multiplied by an estimate of the number of product units on hand at a given date. Decreases in selling prices are discretionary decisions made by the Company in response to market conditions, including estimated launch dates of competing products and declines in market price. The Company records an estimate for shelf-stock adjustments in the period it agrees to grant such a credit memo to a customer.
	Medicaid and Other Government Pricing Programs
	As required by law, the Company provides a rebate on drugs dispensed under the Medicaid program, Medicare Part D, TRICARE, and other United States government pricing programs. The Company determines its estimated government rebate accrual primarily based on historical experience of claims submitted by the various states and other jurisdictions and any new information regarding changes in the various programs which may impact the Company’s estimate of government rebates. In determining the appropriate accrual amount, the Company considers historical payment rates and processing lag for outstanding claims and payments. The Company records estimates for government rebates as a deduction from gross sales, with corresponding adjustment to accrued liabilities.
	Cash Discounts
	The Company offers cash discounts to its customers, generally 2% of the gross selling price, as an incentive for paying within invoice terms, which generally range from 30 to 90 days. An estimate of cash discounts is recorded in the same period when revenue is recognized.
	Rx Partner and OTC Partner:
	The Rx Partner and OTC Partner contracts include revenue recognized under alliance and collaboration agreements between the Company and unrelated third-party pharmaceutical companies. The Company has entered into these alliance agreements to develop marketing and/or distribution relationships with its partners to fully leverage its technology platform.
	The Rx Partners and OTC Partners alliance agreements obligate the Company to deliver multiple goods and/or services over extended periods. Such deliverables include manufactured pharmaceutical products, exclusive and semi-exclusive marketing rights, distribution licenses, and research and development services. In exchange for these deliverables, the Company receives payments from its agreement partners for product shipments and research and development services, and may also receive other payments including royalty, profit sharing, upfront, and periodic milestone payments. Revenue received from the alliance agreement partners for product shipments under these agreements is not subject to deductions for chargebacks, rebates, product returns, and other pricing adjustments. Royalty and profit sharing amounts the Company receives under these agreements are calculated by the respective agreement partner, with such royalty and profit share amounts generally based upon estimates of net product sales or gross profit which include estimates of deductions for chargebacks, rebates, product returns, and other adjustments the alliance agreement partners may negotiate with their respective customers. The Company records the alliance agreement partner's adjustments to such estimated amounts in the period the agreement partner reports the amounts to the Company.
	The Company applies the updated guidance of ASC 605-25 “Multiple Element Arrangements” to the Strategic Alliance Agreement with Teva Pharmaceuticals Curacao N.V., a subsidiary of Teva Pharmaceutical Industries Limited (“Teva Agreement”). The Company looks to the underlying delivery of goods and/or services which give rise to the payment of consideration under the Teva Agreement to determine the appropriate revenue recognition. The Company initially defers consideration received as a result of research and development-related activities performed under the Teva Agreement. The Company recognizes deferred revenue on a straight-line basis over the Company’s expected period of performance of such services. The Company recognizes revenue received as a result of the manufacture and delivery of products under the Teva Agreement at the time title and risk of loss passes to the customer which is generally when product is received by Teva. The Company recognizes profit share revenue in the period earned.
	OTC Partner revenue is related to agreements with Pfizer Inc. (formerly Wyeth) and L. Perrigo Company with respect to the supply of over-the-counter pharmaceutical products. The OTC Partner sales channel is no longer a core area of the business, and the over-the-counter pharmaceutical products the Company sells through this sales channel are older products which are only sold to Pfizer and Perrigo, and which are currently sold at a loss, on a fully absorbed basis. The Company is currently only required to manufacture the over-the-counter pharmaceutical products under its agreements with Pfizer and Perrigo. The Company recognizes profit share revenue in the period earned.
	Research Partner:
	The Research Partner contracts include revenue recognized under development agreements with unrelated third-party pharmaceutical companies. The development agreements generally obligate the Company to provide research and development services over multiple periods. In exchange for this service, the Company received upfront payments upon signing of each development agreement and is eligible to receive contingent milestone payments, based upon the achievement of contractually specified events. Additionally, the Company may also receive royalty payments from the sale, if any, of a successfully developed and commercialized product under one of these development agreements. The Company recognizes revenue received from the provision of research and development services, including the upfront payment and the milestone payments received before January 1, 2011 on a straight-line basis over the expected period of performance of the research and development services. The Company recognizes revenue received from the achievement of contingent research and development milestones after January 1, 2011 in the period such payment is earned. Royalty fee income, if any, will be recognized by the Company in the period when the revenue is earned.
	Shipping and Handling Fees and Costs
	Shipping and handling fees related to sales transactions are recorded as selling expense.

Note_3_Recent_Accounting_Prono

Note 3 - Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2014
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]	'
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	'
	3. RECENT ACCOUNTING PRONOUNCEMENTS
	In March 2013, the FASB issued updated guidance on foreign currency matters. The update applies to the release of the cumulative translation adjustment into net income when a parent either sells a part or all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or group of assets within a foreign entity. The Company adopted this guidance on January 1, 2014 and the adoption did not have a material effect on its consolidated financial statements.
	In July 2013, the FASB issued updated guidance related to presentation of an unrecognized tax benefit. The guidance requires an entity to present an unrecognized tax benefit as a reduction of a deferred tax asset for a net operating loss (NOL) carryforward, or similar tax loss, or tax credit carryforward, rather than as a liability under certain circumstances. The Company adopted this guidance on January 1, 2014 and the adoption did not have a material effect on its consolidated financial statements.

Note_4_Investments

Note 4 - Investments	3 Months Ended
	Mar. 31, 2014
Investments Schedule [Abstract]	'
Investment [Text Block]	'
	4. INVESTMENTS
	Investments consist of commercial paper, corporate bonds and government sponsored enterprise obligations. The Company’s policy is to invest in only high quality “AAA-rated” or investment-grade securities. Investments in debt securities are accounted for as “held-to-maturity’ and are recorded at amortized cost, which approximates fair value, generally based upon observable market values of similar securities. The Company has historically held all investments in debt securities until maturity, and has the ability and intent to continue to do so. All of the Company’s investments have remaining contractual maturities of less than 12 months and are classified as short-term. Upon maturity, the Company uses a specific identification method.
	A summary of short-term investments as of March 31, 2014 and December 31, 2013 is as follows:
	(in $000’s)	Amortized		Gross		Gross			Fair
	31-Mar-14	Cost		Unrecognized		Unrecognized			Value
				Gains		Losses
	Commercial paper	$	104,516	$	26	$	--		$	104,542
	Corporate bonds		156,539		7		(36	)		156,510
	Total short-term investments	$	261,055	$	33	$	(36	)	$	261,052
	(in $000’s)	Amortized		Gross		Gross			Fair
	31-Dec-13	Cost		Unrecognized		Unrecognized			Value
				Gains		Losses
	Commercial paper	$	91,480	$	26	$	--		$	91,506
	Corporate bonds		137,041		13		(21	)		137,033
	Total short-term investments	$	228,521	$	39	$	(21	)	$	228,539

Note_5_Accounts_Receivable

Note 5 - Accounts Receivable	3 Months Ended
	Mar. 31, 2014
Receivables [Abstract]	'
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	'
	5. ACCOUNTS RECEIVABLE
	The composition of accounts receivable, net is as follows:
	(in $000’s)	March 31,			December 31,
		2014			2013
	Gross accounts receivable	$	246,374		$	246,319
	Less: Rebate reserve		(85,658	)		(88,449	)
	Less: Chargeback reserve		(32,766	)		(37,066	)
	Less: Other deductions		(8,429	)		(7,811	)
	Accounts receivable, net	$	119,521		$	112,993
	A roll forward of the rebate and chargeback reserves activity for the three months ended March 31, 2014 and the year ended December 31, 2013 is as follows:
	(in $000’s)	March 31,			December 31,
	Rebate reserve	2014			2013
	Beginning balance	$	88,449		$	46,011
	Provision recorded during the period		53,124			193,288
	Credits issued during the period		(55,915	)		(150,850	)
	Ending balance	$	85,658		$	88,449
	(in $000’s)	March 31,			December 31,
	Chargeback reserve	2014			2013
	Beginning balance	$	37,066		$	18,410
	Provision recorded during the period		103,944			389,707
	Credits issued during the period		(108,244	)		(371,051	)
	Ending balance	$	32,766		$	37,066
	Other deductions include allowance for uncollectible amounts and cash discounts. The Company maintains an allowance for doubtful accounts for estimated losses resulting from amounts deemed to be uncollectible from its customers, with such allowances for specific amounts on certain accounts. The Company had an allowance for uncollectible amounts of $539,000 at March 31, 2014 and December 31, 2013.

Note_6_Inventory

Note 6 - Inventory	3 Months Ended
	Mar. 31, 2014
Inventory Disclosure [Abstract]	'
Inventory Disclosure [Text Block]	'
	6. INVENTORY
	Inventory is stated at the lower of cost or market. Cost is determined using a standard cost method, and the cost flow assumption is first in, first out (“FIFO”) flow of goods. Standard costs are revised annually, and significant variances between actual costs and standard costs are apportioned to inventory and cost of goods sold based upon inventory turnover. Costs include materials, labor, quality control, and production overhead. Inventory is adjusted for short-dated, unmarketable inventory equal to the difference between the cost of inventory and the estimated value based upon assumptions about future demand and market conditions. If actual market conditions are less favorable than those projected by the Company, additional inventory write-downs may be required. Consistent with industry practice, the Company may build pre-launch inventories of certain products which are pending required approval from the FDA and/or resolution of patent infringement litigation, when, in the Company’s assessment, such action is appropriate to increase the commercial opportunity and FDA approval is expected in the near term and/or the litigation will be resolved in the Company’s favor. The Company accounts for all costs of idle facilities, excess freight and handling costs, and wasted materials (spoilage) as a current period charge in accordance with GAAP.
	Inventory, net of carrying value reserves at March 31, 2014 and December 31, 2013 consisted of the following:
	(in $000’s)	March 31,		December 31,
		2014		2013
	Raw materials	$	26,059	$	27,981
	Work in process		3,115		1,434
	Finished goods		52,032		47,416
	Total inventory		81,206		76,831
	Less: Non-current inventory		5,047		6,725
	Total inventory-current	$	76,159	$	70,107
	Inventory carrying value reserves were $19,652,000 and $17,702,000 at March 31, 2014 and December 31, 2013, respectively. During the three month period ended March 31, 2013, the Company decided to discontinue the manufacture and distribution of certain unprofitable productsafter the Company conducted a strategic review of its currently manufactured generic product portfolio. As a result of this decision, the Company recorded an inventory reserve of $6.7 million related to the discontinued products. In addition, upon receipt of the Complete Response Letter for RYTARY™, the Company evaluated the impact of the expected delay of FDA approval on its ability to sell the associated inventory. The Company determined that a reserve of $5.0 million was appropriate and recorded this amount in the three month period ended March 31, 2013. During the three month period ended March 31, 2013, the Company also recorded a $6.4 million reserve for pre-launch inventory of a product manufactured for another third-party pharmaceutical company due to the anticipated delayed launch of such product as a result of the warning letterrelated to our Hayward, California manufacturing facility.The carrying value of unapproved inventory less reserves was $6,953,000 and $6,462,000 at March 31, 2014 and December 31, 2013, respectively.
	The Company recognizes pre-launch inventories at the lower of its cost or the expected net selling price. Cost is determined using a standard cost method, which approximates actual cost, and assumes a FIFO flow of goods. Costs of unapproved products are the same as approved products and include materials, labor, quality control, and production overhead. When the Company concludes that FDA approval is expected within approximately six months for a drug product candidate, the Company may begin to schedule manufacturing process validation studies as required by the FDA to demonstrate the production process can be scaled up to manufacture commercial batches. Consistent with industry practice, the Company may build quantities of unapproved product inventory pending final FDA approval and/or resolution of patent infringement litigation, when, in the Company’s assessment, such action is appropriate to increase its commercial product opportunity, and FDA approval is expected in the near term, and/or the litigation will be resolved in the Company’s favor. The capitalization of unapproved pre-launch inventory involves risks, including, among other items, FDA approval may not occur; approvals may require additional or different testing and/or specifications than used for unapproved inventory, and in cases where the unapproved inventory is for a product subject to litigation, the litigation may not be resolved or settled in the Company’s favor. If any of these risks materialize and the launch of the unapproved product inventory is delayed or prevented, then the net carrying value of unapproved inventory may be partially or fully reserved. Generally, the selling price of a generic pharmaceutical product is at discount from the corresponding brand product selling price. Typically, a generic drug is easily substituted for the corresponding brand product, and once a generic product is approved, the pre-launch inventory is typically sold within the next three months. If the market prices become lower than the product inventory carrying costs, then the pre-launch inventory value is reduced to such lower market value. If the inventory produced exceeds the estimated market acceptance of the generic product and becomes short-dated, a carrying value reserve will be recorded. In all cases, the carrying value of the Company's pre-launch product inventory is lower than the respective estimated net selling prices.
	To the extent inventory is not scheduled to be utilized in the manufacturing process and/or sold within twelve months of the balance sheet date, it is included as a component of other non-current assets. Amounts classified as non-current inventory consist of raw materials, net of valuation reserves. Raw materials generally have a shelf life of approximately three to five years, while finished goods generally have a shelf life of approximately two years.

Note_7_Property_Plant_and_Equi

Note 7 - Property, Plant and Equipment	3 Months Ended
	Mar. 31, 2014
Property, Plant and Equipment [Abstract]	'
Property, Plant and Equipment Disclosure [Text Block]	'
	7. PROPERTY, PLANT AND EQUIPMENT
	Property, plant and equipment, net consisted of the following:
	(in $000’s)	March 31,			December 31,
		2014			2013
	Land	$	5,773		$	5,773
	Buildings and improvements		141,179			139,657
	Equipment		117,543			114,950
	Office furniture and equipment		12,041			11,523
	Construction-in-progress		16,900			15,910
	Property, plant and equipment, gross	$	293,436		$	287,813
	Less: Accumulated depreciation		(103,775	)		(99,622	)
	Property, plant and equipment, net	$	189,661		$	188,191

Note_8_Goodwill_and_Intangible

Note 8 - Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets Disclosure [Text Block]	'
	8. GOODWILL AND INTANGIBLE ASSETS
	Goodwill was $27,574,000 at March 31, 2014 and December 31, 2013, and the Company attributes the entire carrying amount of goodwill to the Global Division. Goodwill is tested at least annually for impairment or whenever events or changes in circumstances have occurred which could have a material adverse effect on the estimated fair value of the reporting unit, and thus indicate a potential impairment of the goodwill carrying value. The Company concluded the carrying value of goodwill was not impaired as of December 31, 2013.
	Intangible assets consisted of the following:
	(in $000’s)	Initial		Accumulated			Impairment				Carrying
	31-Mar-14	Cost		Amortization							Value
	Amortized intangible assets:
	Zomig® product rights	$	41,783	$	(29,371	)	$	---		$	12,412
	Tolmar product rights		31,450		(4,966	)		(16,032	)		10,452
	Other product rights		2,250		---			(750	)		1,500
	Total intangible assets	$	75,483	$	(34,337	)	$	(16,782	)	$	24,364
	(in $000’s)	Initial		Accumulated			Impairment				Carrying
	31-Dec-13	Cost		Amortization							Value
	Amortized intangible assets:
	Zomig® product rights	$	41,783	$	(28,641	)	$	---		$	13,142
	Tolmar product rights		31,450		(3,266	)		(13,156	)		15,028
	Other product rights		2,250		---			(750	)		1,500
	Total intangible assets	$	75,483	$	(31,907	)	$	(13,906	)	$	29,670
	The Zomig® product rights under the Distribution, License, Development and Supply Agreement (“AZ Agreement”) with AstraZeneca UK Limited (“AstraZeneca”) were amortized on a straight-line basis over a period of 14 months starting in April 2012 and ending upon the expiration of the underlying patent for the tablet and over a period of 11 months starting in July 2012 and ending upon the expiration of the underlying patent for the orally disintegrating tablet. The Zomig® product rights under the AZ Agreement are also being amortized over a period of 72 months starting in July 2012 for the nasal spray. In June 2012, the Company entered into a Development, Supply and Distribution Agreement (the “Tolmar Agreement”) with TOLMAR, Inc. (“Tolmar”). Under the terms of the Tolmar Agreement, Tolmar granted to the Company an exclusive license to commercialize up to 11 generic topical prescription drug products, including ten currently approved products and one product pending approval at the FDA, in the United States and its territories. Under the terms of the Tolmar Agreement, Tolmar is responsible for developing and manufacturing the products, and the Company is responsible for the marketing and sale of the products. During the three month period ended September 30, 2013, as a result of the most recent market share data obtained by the Company and the Company’s revised five year projections for the Tolmar product lines, the Company performed an intangible asset impairment test on the Tolmar products. Based on the results of the impairment analysis, the Company recorded a $13.2 million impairment charge to cost of revenues for the Global Division in the three month period ended September 30, 2013. During the period ended March 31, 2014, as a result of a further decline in pricing, the Company revised its projections and performed an intangible asset impairment analysis. Based on the results of this analysis, the Company recorded a $2.9 million charge to cost of revenues for the Global Pharmaceuticals Division, which was 100% of the remaining net book value of this asset. The remaining carrying value of the Tolmar product rights are being amortized over the remaining estimated useful lives of the underlying products over a period ranging from five to 12 years, starting upon commencement of commercialization activities by the Company during the year ended December 31, 2012. Information concerning the AZ Agreement and the Tolmar Agreement can be found in “Note 12 - Alliance and Collaboration Agreements.” Other product rights consist of Abbreviated New Drug Applications (“ANDAs”) which have been filed with the FDA. During the three month period ended September 30, 2013, as a result of a decision by management to withdraw one of these ANDAs and no longer seek FDA approval, the Company recorded an intangible asset impairment charge of $0.8 million in research and development expense, representing the full carrying value of the ANDA. For the remaining ANDAs, the Company will either commence amortization upon FDA approval and commercializationover the estimated useful life of the product rights, or will expense the related costs immediately upon failure to obtain FDA approval. Amortization expense is included as a component of cost of revenues on the consolidated statement of operations and was $2,430,000 and $7,142,000 for the three month periods ended March 31, 2014 and 2013, respectively.
	The following schedule shows the expected amortization of the Zomig® and Tolmar product rights as of March 31, 2014 for the next five years and thereafter:
	(in $000s)	Amortization
		Expense
	2014	$	6,891
	2015		4,835
	2016		3,709
	2017		3,573
	2018		1,984
	Thereafter		1,872
	Totals	$	22,864

Note_9_Accrued_Expenses_Commit

Note 9 - Accrued Expenses, Commitments and Contingencies	3 Months Ended
	Mar. 31, 2014
Accrued Liabilities Disclosure [Abstract]	'
Accrued Liabilities Disclosure [Text Block]	'
	9. ACCRUED EXPENSES, COMMITMENTS AND CONTINGENCIES
	The following table sets forth the Company’s accrued expenses:
	(in $000’s)	March 31,			December 31,
		2014			2013
	Payroll-related expenses	$	19,509		$	27,985
	Product returns		27,883			28,089
	Government rebates		17,387			23,351
	Accrued shelf-stock		1,101			774
	Legal and professional fees		5,647			3,162
	Income taxes payable		4,352			21,186
	Physician detailing sales force fees		361			1,512
	Other		5,512			5,464
	Total accrued expenses	$	81,752		$	111,523
	Product Returns
	The Company maintains a return policy to allow customers to return product within specified guidelines. At the time of sale, the Company estimates a provision for product returns based upon historical experience for sales made through its Global Products and Impax Products sales channels. Sales of product under the Private Label, Rx Partner and OTC Partner alliance and collaboration agreements are generally not subject to returns. A roll forward of the product return reserve for the three month period ended March 31, 2014 and the year ended December 31, 2013 is as follows:
	(in $000’s)	March 31,			December 31,
	Returns Reserve	2014			2013
	Beginning balance	$	28,089		$	23,440
	Provision related to sales recorded in the period		1,475			11,015
	Credits issued during the period		(1,681	)		(6,366	)
	Ending balance	$	27,883		$	28,089
	Taiwan Facility Construction
	The Company has entered into several contracts relating to ongoing construction at its manufacturing facility located in Jhunan, Taiwan, R.O.C. As of March 31, 2014, the Company had remaining obligations under these contracts of approximately $8,030,000.
	Purchase Order Commitments
	As of March 31, 2014, the Company had $63,684,000 of open purchase order commitments, primarily for raw materials. The terms of these purchase order commitments are less than one year in duration.

Note_10_Income_Taxes

Note 10 - Income Taxes	3 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Income Tax Disclosure [Text Block]	'
	10. INCOME TAXES
	The Company calculates its interim income tax provision in accordance with FASB ASC Topics 270 and 740. At the end of each interim period, the Company makes an estimate of the annual United States domestic and foreign jurisdictions’ expected effective tax rates and applies these rates to its respective year-to-date taxable income or loss. The computation of the annual estimated effective tax rates at each interim period requires certain estimates and assumptions including, but not limited to, the expected operating income for the year, projections of the proportion of income (or loss) earned and taxed in the United States, and the various state and local tax jurisdictions, as well as tax jurisdictions outside the United States, along with permanent differences, and the likelihood of deferred tax asset utilization. The accounting estimates used to compute the provision for income taxes may change as new events occur, more experience is acquired or additional information is obtained. The computation of the annual estimated effective tax rate includes modifications, which were projected for the year, for share-based compensation and state research and development credits, among others. In addition, the effect of changes in enacted tax laws, rates, or tax status is recognized in the interim period in which the respective change occurs.
	During the three month period ended March 31, 2014, the Company recognized an aggregate consolidated tax provision of $2,205,000 for United States domestic and foreign income taxes. In the three month period ended March 31, 2013, the Company recognized an aggregate consolidated tax provision of $48,278,000 for United States domestic and foreign income taxes. The decrease in the tax provision resulted from lower consolidated income before taxes in the three month period ended March 31, 2014, as compared to the same period in the prior year. The effective tax rate of 26% for the three month period ended March 31, 2014 was lower than the effective tax rate of 31% for the prior year period primarily as a result of a change in the timing and mix of U.S. and foreign income; the exclusion of a zero-rate jurisdiction from the interim effective tax rate calculation; and an increase in the deferred tax asset related to a state research and development tax credit carryforward in a state with indefinite carryforwards.

Note_11_Revolving_Line_of_Cred

Note 11 - Revolving Line of Credit	3 Months Ended
	Mar. 31, 2014
Line Of Credit Facilities [Abstract]	'
Line Of Credit Facilities [Text Block]	'
	11. REVOLVING LINE OF CREDIT
	The Company has a Credit Agreement, as amended (the “Credit Agreement”) with Wells Fargo Bank, N.A., as a lender and as administrative agent (the “Administrative Agent”). The Credit Agreement provides the Company with a revolving line of credit in the aggregate principal amount of up to $50,000,000 (the “Revolving Credit Facility”). Under the Revolving Credit Facility, up to $10,000,000 is available for letters of credit, the outstanding face amounts of which reduce availability under the Revolving Credit Facility on a dollar for dollar basis. Proceeds under the Credit Agreement may be used for working capital, general corporate and other lawful purposes. The Company has not yet borrowed any amounts under the Revolving Credit Facility.
	The Company’s borrowings under the Credit Agreement are secured by substantially all of the personal property assets of the Company pursuant to a Security Agreement (the “Security Agreement”) entered into by the Company and the Administrative Agent. As further security, the Company also pledged to the Administrative Agent, 65% of the Company’s equity interest in its wholly owned subsidiary Impax Laboratories (Taiwan), Inc., all of the Company’s equity interests in its wholly owned domestic subsidiaries and must similarly pledge all or a portion of its equity interest in future subsidiaries. Under the Credit Agreement, among other things:
		●	The outstanding principal amount of all revolving credit loans, together with accrued and unpaid interest thereon, will be due and payable on the maturity date, which will occur on February 11, 2015.
		●	Borrowings under the Revolving Credit Facility will bear interest, at the Company’s option, at either an Alternate Base Rate (as defined in the Credit Agreement) plus the applicable margin in effect from time to time ranging from 0.5% to 1.5%, or a LIBOR Rate (as defined in the Credit Agreement) plus the applicable margin in effect from time to time ranging from 1.5% to 2.5%. The Company is also required to pay an unused commitment fee ranging from 0.25% to 0.45% per annum based on the daily average undrawn portion of the Revolving Credit Facility. The applicable margin described above and the unused commitment fee in effect at any given time will be determined based on the Company’s Total Net Leverage Ratio (as defined in the Credit Agreement), which is based upon the Company’s consolidated total debt, net of unrestricted cash in excess of $100 million, compared to Consolidated EBITDA (as defined in the Credit Agreement) for the immediately preceding four quarters.
		●	The Company may prepay any outstanding loan under the Revolving Credit Facility without premium or penalty.
		●	The Company is required under the Credit Agreement and the Security Agreement to comply with a number of affirmative, negative and financial covenants. Among other things, these covenants (i) require the Company to provide periodic reports, notices of material events and information regarding collateral, (ii) restrict the Company’s ability, subject to certain exceptions and baskets, to incur additional indebtedness, grant liens on assets, undergo fundamental changes, change the nature of its business, make investments, undertake acquisitions, sell assets, make restricted payments (including the ability to pay dividends and repurchase stock) or engage in affiliate transactions, and (iii) require the Company to maintain a Total Net Leverage Ratio (which is, generally, total funded debt, net of unrestricted cash in excess of $100 million, over EBITDA for the preceding four quarters) of less than 3.75 to 1.00, a Senior Secured Leverage Ratio (which is, generally, total senior secured debt over EBITDA for the preceding four quarters) of less than 2.50 to 1.00, Consolidated EBITDA of at least $50.0 million and Minimum Liquidity (which is, generally unrestricted cash and cash equivalents) of at least $100.0 million. As of March 31, 2014, the Company was in compliance with the various covenants contained in the Credit Agreement and the Security Agreement.
		●	The Credit Agreement contains customary events of default (subject to customary grace periods, cure rights and materiality thresholds), including, among others, failure to pay principal, interest or fees, violation of covenants, material inaccuracy of representations and warranties, cross-default and cross-acceleration of material indebtedness and other obligations, certain bankruptcy and insolvency events, certain judgments, certain events related to the Employee Retirement Income Security Act of 1974, as amended, and a change of control.
		●	Following an event of default under the Credit Agreement, the Administrative Agent would be entitled to take various actions, including the acceleration of amounts due under the Credit Agreement and seek other remedies that may be taken by secured creditors.
	During the three month periods ended March 31, 2014 and 2013, unused line fees incurred under the Credit Agreement were $31,000 and $30,000, respectively.

Note_12_Alliance_and_Collabora

Note 12 - Alliance and Collaboration Agreements	3 Months Ended
	Mar. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Collaborative Arrangement Disclosure [Text Block]	'
	12. ALLIANCE AND COLLABORATION AGREEMENTS
	The Company has entered into several alliance, collaboration, license and distribution agreements, and similar agreements with respect to certain of its products and services, with unrelated third-party pharmaceutical companies. The consolidated statement of operations includes revenue recognized under agreements the Company has entered into to develop marketing and/or distribution relationships with its partners to fully leverage its technology platform and revenue recognized under development agreements which generally obligate the Company to provide research and development services over multiple periods.
	The Company’s alliance and collaboration agreements often include milestones and provide for milestone payments upon achievement of these milestones. Generally, the milestone events contained in the Company’s alliance and collaboration agreements coincide with the progression of the Company’s products and technologies from pre-commercialization to commercialization.
	The Company groups pre-commercialization milestones in its alliance and collaboration agreements into clinical and regulatory categories, each of which may include the following types of events:
	Clinical Milestone Events:
		●	Designation of a development candidate. Following the designation of a development candidate, generally, IND-enabling animal studies for a new development candidate take 12 to 18 months to complete.
		●	Initiation of a Phase I clinical trial. Generally, Phase I clinical trials take one to two years to complete.
		●	Initiation or completion of a Phase II clinical trial. Generally, Phase II clinical trials take one to three years to complete.
		●	Initiation or completion of a Phase III clinical trial. Generally, Phase III clinical trials take two to four years to complete.
		●	Completion of a bioequivalence study. Generally, bioequivalence studies take three months to one year to complete.
	Regulatory Milestone Events:
		●	Filing or acceptance of regulatory applications for marketing approval such as a New Drug Application in the United States or Marketing Authorization Application in Europe. Generally, it takes six to twelve months to prepare and submit regulatory filings and approximately two months for a regulatory filing to be accepted for substantive review.
		●	Marketing approval in a major market, such as the United States or Europe. Generally it takes one to three years after an application is submitted to obtain approval from the applicable regulatory agency.
		●	Marketing approval in a major market, such as the United States or Europe for a new indication of an already-approved product. Generally it takes one to three years after an application for a new indication is submitted to obtain approval from the applicable regulatory agency.
	Commercialization milestones in the Company’s alliance and collaboration agreements may include the following types of events:
		●	First commercial sale in a particular market, such as in the United States or Europe.
		●	Product sales in excess of a pre-specified threshold, such as annual sales exceeding $100 million. The amount of time to achieve this type of milestone depends on several factors including but not limited to the dollar amount of the threshold, the pricing of the product and the pace at which customers begin using the product.
	License and Distribution Agreement with Shire
	In January 2006, the Company entered into a License and Distribution Agreement with an affiliate of Shire Laboratories, Inc. (“Prior Shire Agreement”), under which the Company received a non-exclusive license to market and sell an authorized generic of Shire’s Adderall XR® product (“AG Product”) subject to certain conditions, but in any event by no later than January 1, 2010. The Company commenced sales of the AG Product in October 2009. On February 7, 2013, the Company entered into an Amended and Restated License and Distribution Agreement with Shire (the “Amended and Restated Shire Agreement”), which amended and restated the Prior Shire Agreement. The Amended and Restated Shire Agreement was entered into by the parties in connection with the settlement of the Company’s litigation with Shire relating to Shire’s supply of the AG Product to the Company under the Prior Shire Agreement. During the three month period ended March 31, 2013, the Company received a payment in the amount of $48,000,000 from Shire in connection with such litigation settlement, which was recorded in the first quarter of 2013 as "Other Income" on the consolidated statement of operations. The Amended and Restated Shire Agreement provides for Shire to supply the AG Product and for the Company to market and sell the AG Product subject to the terms and conditions thereof until the earlier of (i) the first commercial sale of the Company’s generic equivalent product to Adderall XR® and (ii) September 30, 2014 (the “Supply Term”), subject to certain continuing obligations of the parties upon expiration or early termination of the Supply Term, including Shire’s obligation to deliver AG Products still owed to the Company as of the end of the Supply Term. The Company is required to pay a profit share to Shire on sales of the AG Product, of which the Company owed a profit share payable to Shire of $4,447,000 and $5,640,000 on sales of the AG Product during the three month periods ended March 31, 2014 and 2013, respectively, with a corresponding charge included in the cost of revenues line on the consolidated statement of operations.
	Development, Supply and Distribution Agreement with TOLMAR, Inc.
	In June 2012, the Company entered into the Tolmar Agreement with Tolmar. Under the terms of the Tolmar Agreement, Tolmar granted to the Company an exclusive license to commercialize up to 11 generic topical prescription drug products, including ten currently approved products and one product pending approval at the FDA, in the United States and its territories. Under the terms of the Tolmar Agreement, Tolmar is responsible for developing and manufacturing the products, and the Company is responsible for marketing and sale of the products. The Company is required to pay a profit share to Tolmar on sales of each product commercialized pursuant to the terms of the Tolmar Agreement. The Company owed a profit share payable to Tolmar of $2,961,000 and $490,000 during the three month periods ended March 31, 2014 and 2013, respectively, with a corresponding charge included in the cost of revenues line on the consolidated statement of operations. The Company paid Tolmar a $21,000,000 upfront payment upon signing of the agreement and a $1,000,000 milestone payment in the year ended December 31, 2012. The Company has the potential to pay up to $24,000,000 in additional contingent milestone payments if certain commercialization and regulatory events occur. The upfront payment for the Tolmar product rights has been allocated to the underlying topical products based upon the relative fair value of each product and is being amortized over the remaining estimated useful life of each underlying product, ranging from five to 12 years, starting upon commencement of commercialization activities by the Company during the second half of 2012. The amortization of the Tolmar product rights is included as a component of cost of revenues on the consolidated statement of operations. The Company initially allocated $1,550,000 of the upfront payment to two products which are still in development and recorded such amount as in-process research and development expense in its results of operations for the year ended December 31, 2012. The Company similarly recorded the $1,000,000 milestone paid in the year ended December 31, 2012 as a research and development expense. Contingent milestone payments will be initially recognized in the period the triggering event occurs. Milestone payments which are contingent upon commercialization events will be accounted for as an additional cost of acquiring the product license rights. Milestone payments that are contingent upon regulatory approval events will be capitalized and amortized over the remaining estimated useful life of the approved product. As discussed in “Note 8 – Goodwill and Intangible Assets,” the Company recorded intangible asset impairment charges to cost of revenues of $13.2 million in the three month period ended September 30, 2013 and $2.9 million in the three month period ended March 31, 2014 related to the Tolmar product rights acquired under the Tolmar Agreement. During the fourth quarter of 2013, the Company made a $12.0 million payment to Tolmar upon Tolmar’s achievement of a regulatory milestone event in accordance with the terms of the Tolmar Agreement.
	The Company entered into a Loan and Security Agreement with Tolmar in March 2012 (the “Tolmar Loan Agreement”), under which the Company has agreed to lend to Tolmar one or more loans through December 31, 2014, in an aggregate amount not to exceed $15,000,000. As of March 31, 2014, Tolmar has borrowed $15,000,000 under the Tolmar Loan Agreement. The outstanding principal amount of, including any accrued and unpaid interest on, the loans under the Tolmar Loan Agreement are payable by Tolmar beginning from March 31, 2017 through March 31, 2020 or the maturity date, in accordance with the terms therein. Tolmar may prepay all or any portion of the outstanding balance of the loans prior to the maturity date without penalty or premium.
	Strategic Alliance Agreement with Teva
	The Company entered into a Strategic Alliance Agreement with Teva in June 2001 (“Teva Agreement”). The Teva Agreement commits the Company to develop and manufacture, and Teva to distribute, a specified number of controlled release generic pharmaceutical products (“generic products”), each for a 10-year period. The Company identified the following deliverables under the Teva Agreement: (i) the manufacture and delivery of generic products; (ii) the provision of research and development activities (including regulatory services) related to each product; and (iii) market exclusivity associated with the products. In July 2010, the Teva Agreement was amended to terminate the provisions of the Teva Agreement with respect to the Omeprazole (generic to Prilosec®) 10mg, 20mg and 40mg products. Additionally, in exchange for the return of product rights, the Company agreed to pay to Teva a profit share on future sales of the fexofenadine HCI/pseudoephedrine (generic to Allegra-D®) product, if any, but in no event will such profit share payments exceed an aggregate amount of $3,000,000. The Company recognized previously deferred revenue related to the Teva Agreement of $327,000 in the three month periods ended March 31, 2014 and 2013. No additional amounts were deferred during the three month periods ended March 31, 2014 and 2013.
	OTC Partners Alliance Agreement
	In June 2002, the Company entered into a Development, License and Supply Agreement with Pfizer Inc. (formerly Wyeth) (the “Pfizer Agreement”), for a term of approximately 15 years, relating to the Company’s Loratadine and Pseudoephedrine Sulfate 5 mg/120 mg 12-hour Extended Release Tablets and Loratadine and Pseudoephedrine Sulfate 10 mg/240 mg 24-hour Extended Release Tablets for the OTC market. The Pfizer Agreement included payments to the Company upon achievement of development milestones, as well as royalties paid to the Company by Pfizer on its sales of the product. Pfizer launched this product in May 2003 as Alavert® D-12 Hour. In February 2005, the agreement was partially cancelled with respect to the 24-hour Extended Release Product due to lower than planned sales volume. In December 2011, Pfizer and the Company entered into an agreement with L. Perrigo Company whereby the parties agreed that the Company would supply the Company’s Loratadine and Pseudoephedrine Sulfate 5 mg/120 mg 12-hour Extended Release Tablets to Perrigo in the United States and its territories (the “Perrigo Agreement”). The Company previously developed the products, and is currently only responsible for manufacturing the products, and Pfizer and Perrigo are responsible for marketing and sale of the products. The Pfizer and Perrigo Agreements are no longer a core area of the Company’s business, and the over-the-counter pharmaceutical products the Company sells under both agreements are older products which are only sold to Pfizer and to Perrigo, and which are sold at a loss, on a fully absorbed basis. The Company recognizes profit share revenue in the period earned.
	Joint Development Agreement with Valeant Pharmaceuticals International, Inc.
	In November 2008, the Company and Valeant Pharmaceuticals International, Inc., formerly Medicis Pharmaceutical Corporation (“Valeant”), entered into a Joint Development Agreement (“Joint Development Agreement”) and a License and Settlement Agreement. The Joint Development Agreement provides for the Company and Valeant to collaborate in the development of a total of five dermatology products, including four of the Company’s generic products and one branded advanced form of Valeant’s SOLODYN® product. Under the provisions of the Joint Development Agreement the Company received a $40,000,000 upfront payment, paid by Valeant in December 2008. The Company has also received an aggregate of $15,000,000 in milestone payments composed of two $5,000,000 milestone payments, paid by Valeant in March 2009 and September 2009, a $2,000,000 milestone payment paid by Valeant in December 2009, and a $3,000,000 milestone payment paid by Valeant in March 2011. The Company has the potential to receive up to an additional $8,000,000 of contingent regulatory milestone payments each of which the Company believes to be substantive, as well as the potential to receive royalty payments from sales, if any, by Valeant of its advanced form SOLODYN® brand product. Finally, to the extent the Company commercializes any of its four generic dermatology products covered by the Joint Development Agreement, the Company will pay to Valeant a gross profit share on sales of such products. The Company began selling one of the four dermatology products during the year ended December 31, 2011. During the three month period ended March 31, 2013, the Company extended the revenue recognition period for the Joint Development Agreement from the previous recognition period ending in November 2013 to December 2014, due to changes in the estimated timing of completion of certain research and development activities. This change was made on a prospective basis, and resulted in a reduced quarterly amount of revenue recognized in 2013 and the first quarter of 2014, as compared to prior year quarters, and a reduced periodic amount of revenue to be recognized in future periods.
	License, Development and Commercialization Agreement & Supply Agreement with Glaxo Group Limited
	In December 2010, the Company entered into a License, Development and Commercialization Agreement with Glaxo Group Limited (“GSK”). Under the terms of the agreement with GSK, GSK received an exclusive license to develop and commercialize IPX066 (brand name RYTARY™ in the United States) throughout the world, except in the United States and Taiwan, and certain follow-on products at the option of GSK. Under the terms of the agreement, GSK paid an $11,500,000 upfront payment in December 2010, and the Company had the potential to receive up to $169,000,000 of contingent milestone payments. The upfront payment was recognized as revenue on a straight-line basis over the Company’s expected period of performance to provide research and development services which ended on December 31, 2012. In April 2013, the Company and GSK announced that they were terminating their collaboration for the development and commercialization of IPX066 outside the United States and Taiwan as a result of delays in the anticipated regulatory approval and launch dates in countries in which GSK has rights to commercialize the product and terminated the License, Development and Commercialization Agreement. At the end of July 2013, GSK’s rights to develop and commercialize IPX066 outside the United States and Taiwan were transferred back to the Company.
	Distribution, License, Development and Supply Agreement with AstraZeneca UK Limited
	In January 2012, the Company entered into the AZ Agreement with AstraZeneca. Under the terms of the AZ Agreement, AstraZeneca granted to the Company an exclusive license to commercialize the tablet, orally disintegrating tablet and nasal spray formulations of Zomig® (zolmitriptan) products for the treatment of migraine headaches in the United States and in certain United States territories, except during an initial transition period when AstraZeneca fulfilled all orders of Zomig® products on the Company’s behalf and AstraZeneca paid to the Company the gross profit on such Zomig® products. The Company is obligated to fulfill certain minimum requirements with respect to the promotion of currently approved Zomig® products as well as other dosage strengths of such products approved by the FDA in the future. The Company may, but has no obligation to, develop and commercialize additional products containing zolmitriptan and additional indications for Zomig®, subject to certain restrictions as set forth in the AZ Agreement. The Company will be responsible for conducting clinical studies and preparing regulatory filings related to the development of any such additional products and would bear all related costs. During the term of the AZ Agreement, AstraZeneca will continue to be the holder of the NDA for existing Zomig® products, as well as any future dosage strengths thereof approved by the FDA, and will be responsible for certain regulatory and quality-related activities for such Zomig® products. AstraZeneca will manufacture and supply Zomig® products to the Company and the Company will purchase its requirements of Zomig® products from AstraZeneca until a date determined in the AZ Agreement. Thereafter, AstraZeneca may terminate its supply obligations upon certain advance notice to the Company, in which case the Company would have the right to manufacture or have manufactured its own requirements for the applicable Zomig® product.
	Beginning in January 2013, the Company is obligated to pay AstraZeneca tiered royalties on net sales of Zomig® products, depending on brand exclusivity and subject to customary reductions and other terms and conditions set forth in the AZ Agreement. The Company owed a royalty payable to AstraZeneca of $2,615,000 and $16,282,000 during the three month periods ended March 31, 2014 and 2013, respectively, with a corresponding charge included in the cost of revenues line on the consolidated statement of operations. The Company is also obligated to pay AstraZeneca royalties after a certain specified date based on gross profit from sales of authorized generic versions of the Zomig products subject to certain terms and conditions set forth in the AZ Agreement. In May 2013, the Company’s exclusivity period for branded Zomig® tablets and orally disintegrating tablets expired and the Company launched authorized generic versions of those products in the United States.
	Development and Co-Promotion Agreement with Endo Pharmaceuticals, Inc.
	In June 2010, the Company and Endo Pharmaceuticals, Inc. ("Endo") entered into a Development and Co-Promotion Agreement (“Endo Agreement”) under which the Company and Endo have agreed to collaborate in the development and commercialization of a next-generation advanced form of the Company’s lead brand product candidate ("Endo Agreement Product"). Under the provisions of the Endo Agreement, in June 2010, Endo paid to the Company a $10,000,000 upfront payment. The Company has the potential to receive up to an additional $30,000,000 of contingent milestone payments, which includes $15,000,000 contingent upon the achievement of clinical events, $5,000,000 contingent upon the achievement of regulatory events, and $10,000,000 contingent upon the achievement of commercialization events. The Company believes all milestones under the Endo Agreement are substantive. Upon commercialization of the Endo Agreement Product in the United States, Endo will have the right to co-promote such product to non-neurologists, which will require the Company to pay Endo a co-promotion service fee of up to 100% of the gross profits attributable to prescriptions for the Endo Agreement Product which are written by the non-neurologists.
	The Company is recognizing the $10,000,000 upfront payment as revenue on a straight-line basis over a period of 103 months, which is the estimated expected period of performance of research and development activities under the Endo Agreement, commencing with the June 2010 effective date of the Endo Agreement and ending in December 2018, the estimated date of FDA approval of the Company's NDA. The FDA approval of the Endo Agreement Product NDA represents the end of the Company’s expected period of performance, as the Company will have no further contractual obligation to perform research and development activities under the Endo Agreement, and therefore the earnings process will be completed. Deferred revenue is recorded as a liability captioned “Deferred revenue” on the consolidated balance sheet and deferred revenue under the Endo Agreement was $5,071,000 as of March 31, 2014. Revenue recognized under the Endo Agreement is reported in the line item “Other Revenues” in “Note 18 - Supplementary Financial Information.” The Company determined the straight-line method aligns revenue recognition with performance as the level of research and development activities performed under the Endo Agreement are expected to be performed on a ratable basis over the Company’s estimated expected period of performance. Upon FDA approval of the Company’s Endo Agreement Product NDA, the Company will have the right (but not the obligation) to begin manufacture and sale of such product. The Company will sell its manufactured branded product to customers in the ordinary course of business through its Impax Pharmaceuticals Division. The Company will account for any sale of the product covered by the Endo Agreement as current period revenue. The co-promotion service fee paid to Endo, as described above, if any, will be accounted for as a current period selling expense as incurred.
	The Company and Endo also entered into a Settlement and License Agreement in June 2010 (the “Endo Settlement Agreement”) pursuant to which Endo agreed to make a payment to the Company should Prescription Sales of Opana® ER (as defined in the Endo Settlement Agreement) fall below a predetermined contractual threshold in the quarter immediately prior to the Company launching a generic version of Opana® ER. As a result of the Company’s launch of its generic version of Opana ER in January 2013 and Endo’s Prescription Sales of Opana ER during the fourth quarter of 2012, the Company recorded a $102,049,000 settlement gain during the three month period ended March 31, 2013, which is included in “Other Income” in the consolidated statement of operations.
	Agreement with DURECT Corporation
	During the three month period ended March 31, 2014, the Company entered into an agreement with DURECT Corporation (“Durect”) granting Impax the exclusive worldwide rights to develop and commercialize DURECT’s investigational transdermal bupivacaine patch for the treatment of pain associated with post-herpetic neuralgia (PHN), referred to by the Company as IPX239. The Company paid Durect a $2,000,000 up-front payment upon signing of the agreement. The Company has the potential to pay up to $61,000,000 in additional contingent milestone payments upon the achievement of predefined development and commercialization milestones. If IPX239 is commercialized, Durect would also receive a tiered royalty on product sales.

Note_13_ShareBased_Compensatio

Note 13 - Share-Based Compensation	3 Months Ended
	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]	'
	13. SHARE-BASED COMPENSATION
	The Company recognizes the grant date fair value of each stock option and restricted stock award over its vesting period. Stock options and restricted stock awards are granted under the Company’s Second Amended and Restated 2002 Equity Incentive Plan (“2002 Plan”) and generally vest over a three or four year period and have a term of ten years. Total share-based compensation expense recognized in the consolidated statement of operations during the three month periods ended March 31, 2014 and 2013 was as follows:
		Three Months Ended
		March 31,
	(in $000’s)	2014			2013
	Manufacturing expenses	$	896		$	673
	Research and development		1,402			1,376
	Selling, general and administrative		2,088			2,310
	Total	$	4,386		$	4,359
	The following table summarizes stock option activity during the three month period ended March 31, 2014:
			Number of Shares			Weighted Average
			Under Option			Exercise Price
						per Share
	Outstanding at December 31, 2013		3,770,905		$	14.01
	Options granted		3,000		$	25.18
	Options exercised		(364,953	)	$	15.99
	Options forfeited		(18,553	)	$	20.93
	Outstanding at March 31, 2014		3,390,399		$	13.77
	Options exercisable at March 31, 2014		2,476,479		$	11.41
	The Company estimated the fair value of each stock option award on the grant date using the Black-Scholes option pricing model. Expected volatility is based solely on historical volatility of the Company’s common stock. The expected term calculation is based on the “simplified” method described in SAB No. 107, Share-Based Payment and SAB No. 110, Share-Based Payment, as the result of the simplified method provides a reasonable estimate in comparison to the Company’s actual experience. The risk-free interest rate is based on the U.S. Treasury yield at the date of grant for an instrument with a maturity that is commensurate with the expected term of the stock options. The dividend yield of zero is based on the fact that the Company has never paid cash dividends on its common stock, and has no present intention to pay cash dividends.
	A summary of the Company’s non-vested restricted stock awards activity during the three month period ended March 31, 2014 is presented below:
	Restricted Stock Awards	Number of Restricted			Weighted Average
		Stock Awards			Grant Date
					Fair Value
	Non-vested at December 31, 2013		2,123,835		$	21.13
	Granted		29,950		$	25.18
	Vested		(30,041	)	$	20.68
	Forfeited		(31,439	)	$	21.47
	Non-vested at March 31, 2014		2,092,305		$	21.19
	The Company grants restricted stock awards to certain eligible employees and directors as a component of its long-term incentive compensation program. The restricted stock award grants are made in accordance with the Company’s 2002 Plan, and typically specify that the shares of common stock underlying the restricted stock awards are not issued until they vest. The restricted stock awards generally vest ratably over a three or four year period from the date of grant.
	As of March 31, 2014, the Company had total unrecognized share-based compensation expense, net of estimated forfeitures, of $35,280,000 related to all of its share-based awards, which will be recognized over a weighted-average period of 1.98 years. As of March 31, 2014, the Company estimated 3,001,000 stock options and 1,852,000 shares of restricted stock awards granted to employees which were vested or expected to vest. The intrinsic value of stock options exercised during the three month periods ended March 31, 2014 and 2013 was $3,789,000 and $2,933,000, respectively. The total fair value of restricted stock awards which vested during the three month periods ended March 31, 2014 and 2013 was $621,000 and $613,000, respectively. As of March 31, 2014, the Company had 3,533,694 shares of common stock available for issuance of stock options, restricted stock awards, and/or stock appreciation rights.

Note_14_Stockholders_Equity

Note 14 - Stockholders' Equity	3 Months Ended
	Mar. 31, 2014
Stockholders' Equity Note [Abstract]	'
Stockholders' Equity Note Disclosure [Text Block]	'
	14. STOCKHOLDERS’ EQUITY
	Preferred Stock
	Pursuant to its certificate of incorporation, the Company is authorized to issue 2,000,000 shares, $0.01 par value per share, “blank check” preferred stock, which enables the Board of Directors, from time to time, to create one or more new series of preferred stock. Each series of preferred stock issued can have the rights, preferences, privileges and restrictions designated by the Board of Directors. The issuance of any new series of preferred stock could affect, among other things, the dividend, voting, and liquidation rights of the Company’s common stock. During the three month periods ended March 31, 2014 and 2013, the Company did not issue any preferred stock.
	Common Stock
	The Company’s certificate of incorporation, as amended, authorizes the Company to issue 90,000,000 shares of common stock with $0.01 par value.

Note_15_Earnings_Per_Share

Note 15 - Earnings Per Share	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share [Text Block]	'
	15. EARNINGS PER SHARE
	The Company's earnings per share (EPS) includes basic net income per share, computed by dividing net income (as presented on the consolidated statement of operations), by the weighted average number of shares of common stock outstanding for the period, along with diluted net income per share, computed by dividing net income by the weighted average number of shares of common stock adjusted for the dilutive effect of common stock equivalents outstanding during the period. A reconciliation of basic and diluted net income per share of common stock for the three month periods ended March 31, 2014 and 2013 was as follows:
		Three Months Ended
		March 31,
	(in $000’s except share and per share amounts)	2014		2013
	Numerator:
	Net income	$	6,425	$	105,442
	Denominator:
	Weighted average common shares outstanding		67,702,296		66,487,470
	Effect of dilutive stock options and restricted stock awards		2,236,576		1,690,885
	Diluted weighted average common shares outstanding		69,938,872		68,178,355
	Basic net income per share	$	0.09	$	1.59
	Diluted net income per share	$	0.09	$	1.55
	For the three month periods ended March 31, 2014 and 2013, the Company excluded 331,500 and 1,276,394, respectively, of shares issuable upon the exercise of stock options and unvested restricted stock awards from the computation of diluted net income per common share as the effect of these options and unvested restricted stock awards would have been anti-dilutive. Quarterly computations of net income per share amounts are made independently for each quarterly reporting period, and the sum of the per share amounts for the quarterly reporting periods may not equal the per share amounts for the year-to-date reporting period.

Note_16_Segment_Information

Note 16 - Segment Information	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Segment Reporting Disclosure [Text Block]	'
	16. SEGMENT INFORMATION
	The Company has two reportable segments, the Global Division and the Impax Division. The Global Division develops, manufactures, sells, and distributes generic pharmaceutical products, primarily through the following sales channels: the Global Products sales channel for sales of generic prescription products directly to wholesalers, large retail drug chains, and others; the Private Label Product sales channel for generic over-the-counter and prescription products sold to unrelated third-party customers who, in turn, sell the products under their own label; the Rx Partner sales channel for generic prescription products sold through unrelated third-party pharmaceutical entities under their own label pursuant to alliance agreements; and the OTC Partner sales channel for over-the-counter products sold through unrelated third-party pharmaceutical entities under their own labels pursuant to alliance and supply agreements. Revenues from the “Global Products” sales channel and the “Private Label” sales channel are reported under the caption “Global Product sales, net” in “Note 18 – Supplementary Financial Information.” The Company also generates revenue in its Global Division from research and development services provided under a joint development agreement with another unrelated third-party pharmaceutical company, and reports such revenue under the caption “Other Revenues” revenue in “Note 18 – Supplementary Financial Information.” Revenues from the “OTC Partner” sales channel are also reported under the caption “Other Revenues” in “Note 18 – Supplementary Financial Information.” On February 20, 2014, the Company announced plans to begin marketing and selling its allotment of a specified number of bottles of authorized generic RENVELA® tablets. Sales of the authorized generic RENVELA® tablets commenced April 2014. The Company continues to pursue the approval of its pending ANDA for generic RENVELA® with the FDA.
	The Impax Division is engaged in the development of proprietary brand pharmaceutical products that the Company believes represent improvements to already-approved pharmaceutical products addressing CNS disorders. The Impax Division currently has one internally developed late stage branded pharmaceutical product candidate, RYTARY™, an extended release capsule formulation of carbidopa-levodopa for the symptomatic treatment of Parkinson’s disease, for which the NDA was accepted for filing by the FDA in February 2012 and for which the Company received a Complete Response Letter from the FDA in January 2013. In April 2014, after discussions with the FDA, the Company resubmitted an NDA for RYTARY™. The NDA was accepted for filing by the FDA in April 2014 and the FDA has informed the Company that the Prescription Drug User Fee Act (“PDUFA”) date is October 9, 2014. The Company has also initiated the preparation of required documents for a European Market Authorization Application filing for RYTARY™, currently targeted for filing during the second half of 2014. In addition to RYTARY™, the Impax Division has a number of other product candidates that are in varying stages of development. The Impax Division is also engaged in the sale and distribution of Zomig® (zolmitriptan) products, indicated for the treatment of migraine headaches, under the terms of the AZ Agreement with AstraZeneca in the United States and in certain United States territories. Revenues from Impax-labeled branded Zomig® products are reported under the caption “Impax Product sales, net” in “Note 18 – Supplementary Financial Information.” Finally, the Company generates revenue in the Impax Division from research and development services provided under a development and license agreement with another unrelated third-party pharmaceutical company, and reports such revenue under the caption “Other Revenues” revenue in “Note 18 – Supplementary Financial Information.”
	The Company’s chief operating decision maker evaluates the financial performance of the Company’s segments based upon segment income (loss) before income taxes. Items below income (loss) from operations are not reported by segment, except litigation settlements, since they are excluded from the measure of segment profitability reviewed by the Company’s chief operating decision maker. Additionally, general and administrative expenses, certain selling expenses, certain litigation settlements, and non-operating income and expenses are included in “Corporate and Other.” The Company does not report balance sheet information by segment since it is not reviewed by the Company’s chief operating decision maker. The accounting policies for the Company’s segments are the same as those described above in the discussion of "Revenue Recognition" and in the “Summary of Significant Accounting Policies” in the Company's Form 10-K for the year ended December 31, 2013. The Company has no inter-segment revenue.
	The tables below present segment information reconciled to total Company consolidated financial results, with segment operating income or loss including gross profit less direct research and development expenses and direct selling expenses as well as any litigation settlements, to the extent specifically identified by segment:
	(in $000’s)	Global		Impax			Corporate			Total
	Three Months Ended March 31, 2014	Division		Division			and Other			Company
	Revenues, net	$	109,141	$	9,577		$	---		$	118,718
	Cost of revenues		57,022		4,074			---			61,096
	Research and development		11,217		10,524			---			21,741
	Patent litigation expense		2,173		---			---			2,173
	Income (loss) before provision for income taxes	$	36,346	$	(14,242	)	$	(13,474	)	$	8,630
	(in $000’s)	Global		Impax			Corporate			Total
	Three Months Ended March 31, 2013	Division		Division			and Other			Company
	Revenues, net	$	101,636	$	46,853		$	---		$	148,489
	Cost of revenues		61,444		29,174			---			90,618
	Research and development		11,711		7,894			---			19,605
	Patent litigation expense		4,278		---			---			4,278
	Income (loss) before provision for income taxes	$	19,160	$	(2,979	)	$	137,539		$	153,720
	Foreign Operations
	The Company’s wholly owned subsidiary, Impax Laboratories (Taiwan) Inc., is constructing a manufacturing facility in Jhunan, Taiwan R.O.C. which is utilized for manufacturing, research and development, warehouse, and administrative functions, with approximately $139,784,000 of net carrying value of assets, composed principally of a building and equipment, included in the Company's consolidated balance sheet at March 31, 2014.

Note_17_Legal_and_Regulatory_M

Note 17 - Legal and Regulatory Matters	3 Months Ended
	Mar. 31, 2014
Disclosure Text Block Supplement [Abstract]	'
Legal Matters and Contingencies [Text Block]	'
	17. LEGAL AND REGULATORY MATTERS
	Patent Litigation
	There is substantial litigation in the pharmaceutical, biological, and biotechnology industries with respect to the manufacture, use, and sale of new products which are the subject of conflicting patent and intellectual property claims. One or more patents typically cover most of the brand name controlled release products for which the Company is developing generic versions.
	Under federal law, when a drug developer files an ANDA for a generic drug seeking approval before expiration of a patent, which has been listed with the FDA as covering the brand name product, the developer must certify its product will not infringe the listed patent(s) and/or the listed patent is invalid or unenforceable (commonly referred to as a “Paragraph IV” certification). Notices of such certification must be provided to the patent holder, who may file a suit for patent infringement within 45 days of the patent holder’s receipt of such notice. If the patent holder files suit within the 45 day period, the FDA can review and approve the ANDA, but is prevented from granting final marketing approval of the product until a final judgment in the action has been rendered in favor of the generic drug developer, or 30 months from the date the notice was received, whichever is sooner. Lawsuits have been filed against the Company in connection with the Company’s Paragraph IV certifications seeking an order delaying the approval of the Company’s ANDA until expiration of the patent(s) at issue in the litigation.
	Should a patent holder commence a lawsuit with respect to an alleged patent infringement by the Company, the uncertainties inherent in patent litigation make the outcome of such litigation difficult to predict. The delay in obtaining FDA approval to market the Company’s product candidates as a result of litigation, as well as the expense of such litigation, whether or not the Company is ultimately successful, could have a material adverse effect on the Company’s results of operations and financial position. In addition, there can be no assurance that any patent litigation will be resolved prior to the end of the 30-month period. As a result, even if the FDA were to approve a product upon expiration of the 30-month period, the Company may elect to not commence marketing the product if patent litigation is still pending.
	The Company is generally responsible for all of the patent litigation fees and costs associated with current and future products not covered by its alliance and collaboration agreements. The Company has agreed to share legal expenses with respect to third-party and Company products under the terms of certain of the alliance and collaboration agreements. For instance, the Company is currently sharing litigation costs with respect to three products under the terms of separate agreements with two third parties. The Company records the costs of patent litigation as expense in the period when incurred for products it has developed, as well as for products which are the subject of an alliance or collaboration agreement with a third-party.
	Although the outcome and costs of the asserted and unasserted claims is difficult to predict, the Company does not expect the ultimate liability, if any, for such matters to have a material adverse effect on its financial condition, results of operations, or cash flows.
	Patent Infringement Litigation
	The Research Foundation of State University of New York et al. v. Impax Laboratories, Inc.; Galderma Laboratories Inc., et al. v. Impax Laboratories, Inc. (Doxycycline Monohydrate)
	In September 2009, The Research Foundation of State University of New York; New York University; Galderma Laboratories Inc.; and Galderma Laboratories, L.P. (collectively, “Galderma”) filed suit against the Company in the U.S. District Court for the District of Delaware (the “District Court”) alleging patent infringement for the filing of the Company’s ANDA relating to Doxycycline Monohydrate Delayed-Release Capsules, 40 mg, generic to Oracea®. In May 2011, Galderma Laboratories Inc., Galderma Laboratories, L.P. and Supernus Pharmaceuticals, Inc. filed a second lawsuit in Delaware alleging infringement of an additional patent related to Oracea®. The Company filed an answer and counterclaims in both matters. In October 2009 for the first lawsuit and in July 2011 for the second lawsuit, the parties agreed to be bound by the final judgment concerning infringement, validity and enforceability of the patents at issue in an earlier-filed case brought by Galderma and Supernus against another generic drug manufacturer. Proceedings in the lawsuits involving the Company were stayed pending resolution of the related matter. In July 2011, a four-day trial was held in the case involving the other generic manufacturer in the District Court on the issues of patent infringement and validity. In August 2011, the District Court issued its decision finding four of the five patents invalid and/or not infringed, and the fifth patent, which expires in December 2027, infringed and not invalid. After proceedings related to the remedy, on June 8, 2012, the District Court entered final judgment with respect to that litigation. On June 22, 2012, the District Court entered its final judgment with respect to the Company. All parties filed notices of appeal and/or cross-appeal in July 2012. The briefing at the United States Court of Appeals for the Federal Circuit (the “Federal Circuit”) was completed for all parties on January 28, 2013. The decision of the District Court will be binding on the Company unless reversed or modified on appeal or in subsequent litigation. On August 7, 2013, the Federal Circuit affirmed-in-part, reversed-in-part, and remanded the case to the District Court. The finding that the fifth patent was infringed and not invalid was affirmed, as was the finding that the asserted independent claims of the other four patents were invalid and/or not infringed. The Federal Circuit reversed the District Court’s finding that some of the dependent claims of the four patents were invalid and remanded for further proceedings. On January 6, 2014, the parties entered into a Stipulation of Dismissal and on January 7, 2014, the court entered an Order granting the Stipulation of Dismissal.
	Takeda Pharmaceutical Co., Ltd, et al. v. Impax Laboratories, Inc. (Dexlansoprazole)
	In April 2011, Takeda Pharmaceutical Co., Ltd., Takeda Pharmaceuticals North America, Inc., Takeda Pharmaceuticals LLC, and Takeda Pharmaceuticals America, Inc. (collectively, “Takeda”) filed suit against the Company in the U.S. District Court for the Northern District of California (the “District Court”) alleging patent infringement based on the filing of the Company’s ANDA relating to Dexlansoprazole Delayed Release Capsules, 30 and 60 mg, generic to Dexilant®. The Company filed an answer and counterclaims. The trial court issued a claim construction ruling on April 11, 2012. In November 2012, the Company and Takeda filed cross motions for summary judgment regarding infringement and validity of the patents at issue. On April 8, 2013, the District Court ruled on the summary judgment motions as follows: (i) granted the Company’s motion for non-infringement of U.S. Patent No. 7,790,755, (ii) granted Takeda’s motion of infringement of U.S. Patent Nos. 6,664,276, 6,462,058 and 6,939,971 and (iii) denied the Company’s motion of invalidity for U.S. Patent No. 6,939,971. A bench trial was conducted beginning on June 5, 2013, and a decision was rendered on October 17, 2013, finding the asserted claims of U.S. Patent Nos. 6,462,058, 6,664,276, and 6,939,971 infringed and not invalid. The Company filed a notice of appeal of the District Court’s decision on the 6,462,058, 6,664,276, and 6,939,971 patents to the United States Court of Appeals for the Federal Circuit and Takeda filed a notice of appeal of the District Court decision on the 7,790,755 patent to the Federal Circuit.
	In May 2013, Takeda filed another complaint against the Company in the District Court, alleging infringement of U.S. Patent No. 8,173,158 based on the filing of the Company’s ANDA relating to Dexlansoprazole Delayed Release Capsules, 30 and 60 mg, generic to Dexilant®. Takeda filed an amended complaint in July 2013, alleging infringement of another patent, U.S. Patent No. 8,461,187. The Company filed an answer and counterclaims. Discovery is proceeding and a hearing on claim construction is scheduled for June 12, 2014. Trial is scheduled for April 13, 2015.
	Avanir Pharmaceuticals, Inc. et al. v. Impax Laboratories, Inc. (Dextromethorphan/Quinidine)
	In August 2011, Avanir Pharmaceuticals, Inc., Avanir Holding Co., and Center for Neurological Study filed suit against the Company in the U.S. District Court for the District of Delaware alleging patent infringement based on the filing of the Company’s ANDA relating to Dextromethorphan/Quinidine Capsules, 20 mg/10 mg, generic of Nuedexta®. The Company filed an answer and counterclaims. On October 8, 2012, Avanir Pharmaceuticals, Inc. filed suit against the Company in the U.S. District Court for the District of Delaware alleging patent infringement of a new patent, U.S. Patent 8,227,484, issued July 24, 2012, also based on the filing of the Company’s ANDA relating to Dextromethorphan/Quinidine Capsules, 20 mg/10 mg, generic of Nuedexta. The Company filed an answer and counterclaims on October 10, 2012. A bench trial was conducted beginning on September 9, 2013. On April 30, 2014, the district court issued its decision finding two of the three patents infringed, while finding the third patent not infringed by the Company, and finding all three patents not invalid.
	GlaxoSmithKline LLC, et al. v. Impax Laboratories, Inc., et al. (Dutasteride/Tamsulosin)
	In September 2011, GlaxoSmithKline LLC and SmithKline Beecham Corp. filed suit against the Company in the U.S. District Court for the District of Delaware alleging patent infringement based on the filing of the Company’s ANDA relating to Dutasteride/Tamsulosin Capsules, 0.5 mg/0.4 mg, generic of Jalyn®. The Company filed an answer and counterclaim. The trial court issued a claim construction ruling on November 15, 2012. A bench trial was conducted starting on January 28, 2013, and a decision was rendered on August 9, 2013, finding the asserted claims of the patent in suit infringed and not invalid. The Company appealed the decision to the federal circuit and on February 24, 2014, the decision was affirmed.
	Endo Pharmaceuticals Inc. and Grunenthal GmbH v. Impax Laboratories, Inc. and ThoRx Laboratories, Inc. (Oxymorphone hydrochloride); Endo Pharmaceuticals Inc. and Grunenthal GmbH v. Impax Laboratories, Inc. (Oxymorphone hydrochloride)
	In November 2012, Endo Pharmaceuticals, Inc. and Grunenthal GmbH (collectively, “Endo”) filed suit against ThoRx Laboratories, Inc., a wholly owned subsidiary of the Company (“ThoRx”), and the Company in the U.S. District Court for the Southern District of New York alleging patent infringement based on the filing of ThoRx’s ANDA relating to Oxymorphone Hydrochloride, Extended Release tablets, 5, 7.5, 10, 15, 20, 30 and 40 mg, generic to Opana ER®. In January 2013, Endo filed a separate suit against the Company in the U.S. District Court for the Southern District of New York alleging patent infringement based on the filing of the Company’s ANDA relating to the same products. ThoRx and the Company filed an answer and counterclaims to the November 2012 suit and the Company filed an answer and counterclaims with respect to the January 2013 suit. Discovery is proceeding. No trial date has been set.
	Pfizer Inc. and UCB Pharma GMBH v. Impax Laboratories, Inc. (Fesoterodine)
	In June 2013, Pfizer Inc. and UCB Pharma GMBH filed suit against the Company in the U.S. District Court for the District of Delaware alleging patent infringement based on the filing of the Company’s ANDA relating to Fesoterodine Fumarate Extended-Release Tablets, 4 and 8 mg, generic to Toviaz®. The Company filed its answer and counterclaims. Discovery is proceeding, and trial is scheduled for July 13, 2015.
	Meda Pharmaceuticals Inc. v. Perrigo Israel Pharmaceuticals Ltd., Perrigo Company, L. Perrigo Company and Impax Laboratories, Inc. (Azelastine HCl)
	In May 2013, Meda Pharmaceuticals, Inc. (“Meda”) filed suit against the Company in the United States District Court for the District of New Jersey, alleging that the Company participated in, contributed to, aided, abetted, and/or induced infringement of Meda’s United States Patent No. 8,071,073 based on the submission by Perrigo Israel Pharmaceutical Ltd., Perrigo Company and L. Perrigo Company of an ANDA relating to Azelastine Hydrochloride Nasal Spray (0.15%, eq. 0.1876 mg base/spray), generic to Astepro®. The Company filed its answer and discovery is ongoing. No trial date has been set.
	Warner Chilcott Co., LLC and Warner Chilcott (US), LLC  v. Impax Laboratories, Inc. (Risedronate)
	In October 2013, Warner Chilcott Co., LLC and Warner Chilcott (US), LLC  (together, “Warner Chilcott”) filed suit against the Company in the United States District Court for the District of New Jersey, alleging patent infringement based on the filing of the Company’s ANDA relating to Risedronate Sodium Delayed Release Tablets, 35 mg, generic to Atelvia®. The Company filed its answer, and discovery is proceeding.
	Other Litigation Related to the Company’s Business
	Civil Investigative Demand from the FTC (Minocycline Hydrochloride)
	On May 2, 2012, the Company received a Civil Investigative Demand (“CID”) from the United States Federal Trade Commission (“FTC”) concerning its investigation into the drug SOLODYN® and its generic equivalents. According to the FTC, the investigation relates to whether Medicis Pharmaceutical Corporation, now a wholly owned subsidiary of Valeant Pharmaceuticals International, Inc. (“Medicis”), the Company, and six other companies have engaged or are engaged in unfair methods of competition in or affecting commerce by (i) entering into agreements regarding SOLODYN® or its generic equivalents and/or (ii) engaging in other conduct regarding the sale or marketing of SOLODYN® or its generic equivalents. The Company is cooperating with the FTC in producing documents and information in response to the investigation. To the knowledge of the Company, no FTC proceedings have been initiated against the Company to date, however no assurance can be given as to the timing or outcome of this investigation.
	Solodyn® Antitrust Class Actions
	From July to October 2013, thirteen class action complaints were filed against manufacturers of the brand drug Solodyn® and its generic equivalents, including the Company.
	On July 22, 2013, Plaintiff United Food and Commercial Workers Local 1776 & Participating Employers Health and Welfare Fund, an indirect purchaser, filed a class action complaint in the United States District Court for the Eastern District of Pennsylvania on behalf of itself and others similarly situated.
	On July 23, 2013, Plaintiff Rochester Drug Co-Operative, Inc., a direct purchaser, filed a class action complaint in the United States District Court for the Eastern District of Pennsylvania on behalf of itself and others similarly situated.
	On August 1, 2013, Plaintiff International Union of Operating Engineers Local 132 Health and Welfare Fund, an indirect purchaser, filed a class action complaint in the United States District Court for the Northern District of California on behalf of itself and others similarly situated. On August 29, 2013, this Plaintiff withdrew its complaint from the United States District Court for the Northern District of California, and on August 30, 2013, re-filed the same complaint in the United States Court for the Eastern District of Pennsylvania, on behalf of itself and others similarly situated.
	On August 9, 2013, Plaintiff Local 274 Health & Welfare Fund, an indirect purchaser, filed a class action complaint in the United States District Court for the Eastern District of Pennsylvania on behalf of itself and others similarly situated.
	On August 12, 2013, Plaintiff Sheet Metal Workers Local No. 25 Health & Welfare Fund, an indirect purchaser, filed a class action complaint in the United States District Court for the Eastern District of Pennsylvania on behalf of itself and others similarly situated.
	On August 27, 2013, Plaintiff Fraternal Order of Police, Fort Lauderdale Lodge 31, Insurance Trust Fund, an indirect purchaser, filed a class action complaint in the United States District Court for the Eastern District of Pennsylvania on behalf of itself and others similarly situated.
	On August 29, 2013, Plaintiff Heather Morgan, an indirect purchaser, filed a class action complaint in the United States District Court for the Eastern District of Pennsylvania on behalf of itself and others similarly situated.
	On August 30, 2013, Plaintiff Plumbers & Pipefitters Local 178 Health & Welfare Fund, an indirect purchaser, filed a class action complaint in the United States District Court for the Eastern District of Pennsylvania on behalf of itself and others similarly situated.
	On September 9, 2013, Plaintiff Ahold USA, Inc., a direct purchaser, filed a class action complaint in the United States District Court for the District of Massachusetts on behalf of itself and others similarly situated.
	On September 24, 2013, Plaintiff City of Providence, Rhode Island, an indirect purchaser, filed a class action complaint in the United States District Court for the District of Arizona on behalf of itself and others similarly situated.
	On October 2, 2013, Plaintiff International Union of Operating Engineers Stationary Engineers Local 39 Health & Welfare Trust Fund, an indirect purchaser, filed a class action complaint in the United States District Court for the District of Massachusetts on behalf of itself and others similarly situated.
	On October 7, 2013, Painters District Council No. 30 Health and Welfare Fund, an indirect purchaser, filed a class action complaint in the United States District Court for the District of Massachusetts on behalf of itself and others similarly situated.
	On October 25, 2013, Plaintiff Man-U Service Contract Trust Fund, an indirect purchaser, filed a class action complaint in the United States District Court for the Eastern District of Pennsylvania on behalf of itself and others similarly situated.
	On March 13, 2014, Plaintiff Allied Services Division Welfare Fund, an indirect purchaser, filed a class action complaint in the United States District Court for the District of Massachusetts on behalf of itself and others similarly situated.
	On March 19, 2014, Plaintiff NECA-IBEW Welfare Trust Fund, an indirect purchaser, filed a class action complaint in the United States District Court for the District of Massachusetts on behalf of itself and others similarly situated.
	In each case, the complaints allege that Medicis engaged in an overarching anticompetitive scheme by, among other things, filing frivolous patent litigation lawsuits, submitting frivolous Citizen Petitions, and entering into anticompetitive settlement agreements with several generic manufacturers, including the Company, to delay generic competition of Solodyn® and in violation of state and federal antitrust laws. Plaintiffs seek, among other things, unspecified monetary damages and equitable relief, including disgorgement and restitution.
	On February 25, 2014, the United States Judicial Panel on Multidistrict Litigation ordered the pending actions transferred to the District of Massachusetts for coordinated pretrial proceedings, as In Re Solodyn (Minocycline Hydrochloride) Antitrust Litigation.
	Civil Investigative Demand from the FTC (Oxymorphone Hydrochloride)
	On February 25, 2014, the Company received a CID from the FTC concerning its investigation into the drug Opana® ER and its generic equivalents. According to the FTC, the investigation relates to whether Endo Pharmaceuticals, Inc., the Company, and other companies have engaged or are engaged in unfair methods of competition in or affecting commerce by (i) entering into agreements regarding Opana® ER or its generic equivalents and/or (ii) engaging in other conduct regarding the regulatory filings, sale or marketing of Opana® ER or its generic equivalents. The Company intends to cooperate with the FTC in producing documents and information in response to the CID. To the knowledge of the Company, no proceedings have been initiated against the Company at this time, however no assurance can be given as to the timing or outcome of this investigation.
	Securities and Derivative Class Actions
	On March 7, 2013 and April 8, 2013, two class action complaints were filed against the Company and certain current and former officers and directors of the Company in the United States District Court for the Northern District of California by Denis Mulligan, individually and on behalf of others similarly situated, and Haverhill Retirement System, individually and on behalf of others similarly situated, respectively (“Securities Class Actions”), alleging that the Company and those named officers and directors violated the federal securities law by making materially false and misleading statements and/or failed to disclose material adverse facts to the public in connection with manufacturing deficiencies at the Hayward, California manufacturing facility, including but not limited to the impact the deficiencies would have on the Company’s ability to gain approval from the FDA for the Company’s branded product candidate, RYTARY™ and its generic version of Concerta®. These two Securities Class Actions have subsequently been consolidated, assigned to the same judge, and lead plaintiff has been chosen. The plaintiff’s consolidated amended complaint was filed on September 13, 2013. The Company filed a motion to dismiss the consolidated amended complaint on November 14, 2013. On April 18, 2014, the Court denied the Company’s motion to dismiss. Discovery is proceeding, and a trial date has not been set.
	On March 19, 2013, Virender Singh, derivatively on behalf of the Company, filed a state court action against certain current and former officers and board of directors for breach of fiduciary duty and unjust enrichment in the Superior Court of the State of California County of Santa Clara, asserting similar allegations as those in the Securities Class Actions. That action has been stayed pending resolution of the Securities Class Actions. In addition, the Company is aware of two letters from stockholders demanding action by the Company’s board of directors, including to: (i) undertake an independent internal investigation into management’s alleged violations of Delaware and/or federal law; (ii) commence a civil action against members of management to recover damages sustained as a result of alleged breaches of fiduciary duties; and/or (iii) spearhead meaningful corporate reform to address alleged internal control inadequacies. Each letter further states that if such action is not commenced within a reasonable period of time, the stockholder will commence a stockholder’s’s derivative action on behalf of the Company.

Note_18_Supplementary_Financia

Note 18 - Supplementary Financial Information (unaudited)	3 Months Ended
	Mar. 31, 2014
Quarterly Financial Information Disclosure [Abstract]	'
Quarterly Financial Information [Text Block]	'
	18. SUPPLEMENTARY FINANCIAL INFORMATION (unaudited)
	Selected financial information for the quarterly periods noted is as follows:
	(in $000’s except shares and per share amounts)	Quarter Ended:
		31-Mar-14
	Revenue:
	Global Product sales, gross	$	265,850
	Less:
	Chargebacks		95,714
	Rebates		52,054
	Product Returns		1,294
	Other credits		10,671
	Global Product sales, net		106,117
	Rx Partner		2,435
	Other Revenues		589
	Global Division revenues, net		109,141
	Impax Product sales, gross		20,643
	Less:
	Chargebacks		8,230
	Rebates		1,070
	Product Returns		181
	Other credits		1,853
	Impax Product sales, net		9,309
	Other Revenues		268
	Impax Division revenues, net		9,577
	Total revenues		118,718
	Gross profit		57,622
	Net income	$	6,425
	Net income per share (basic)	$	0.09
	Net income per share (diluted)	$	0.09
	Weighted average: common shares outstanding:
	Basic		67,702,296
	Diluted		69,938,872
	Quarterly computations of net income per share amounts are made independently for each quarterly reporting period, and the sum of the per share amounts for the quarterly reporting periods may not equal the per share amounts for the year-to-date reporting period.
	Selected financial information for the quarterly periods noted is as follows:
	(in $000’s except shares and per share amounts)	Quarter Ended:
		31-Mar-13
	Revenue:
	Global Product sales, gross	$	197,956
	Less:
	Chargebacks		64,345
	Rebates		30,572
	Product Returns		94
	Other credits		5,160
	Global Product sales, net		97,785
	Rx Partner		3,114
	Other Revenues		737
	Global Division revenues, net		101,636
	Impax Product sales, gross		69,292
	Less:
	Chargebacks		7,790
	Rebates		6,236
	Product Returns		1,490
	Other credits		7,255
	Impax Product sales, net		46,521
	Other Revenues		332
	Impax Division revenues, net		46,853
	Total revenues		148,489
	Gross profit		57,871
	Net income	$	105,442
	Net income per share (basic)	$	1.59
	Net income per share (diluted)	$	1.55
	Weighted average: common shares outstanding:
	Basic		66,487,470
Diluted		68,178,355
Quarterly computations of net income per share amounts are made independently for each quarterly reporting period, and the sum of the per share amounts for the quarterly reporting periods may not equal the per share amounts for the year-to-date reporting period.

Note_19_Subsequent_Events

Note 19 - Subsequent Events	3 Months Ended
	Mar. 31, 2014
Subsequent Events [Abstract]	'
Subsequent Events [Text Block]	'
	19. SUBSEQUENT EVENTS
	On April 21, 2014, the board of directors of the Company announced that it had appointed G. Frederick Wilkinson as the Company’s new President and Chief Executive Officer effective as of April 29, 2014. Mr. Wilkinson succeeds Larry Hsu, Ph.D. who retired from his positions as President and Chief Executive Officer of the Company.
	In April 2014, after discussions with the FDA, the Company resubmitted an NDA for RYTARY™. The NDA was accepted for filing by the FDA in April 2014 and the FDA has informed the Company that the PDUFA date is October 9, 2014.

Supplemental_Cash_Flow_Informa1

Supplemental Cash Flow Information (Tables)	3 Months Ended
	Mar. 31, 2014
Supplemental Cash Flow Elements [Abstract]	'
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]	'
			Three Months Ended
	(in $000's)		March 31,		March 31,
			2014		2013
	Cash paid for interest	$	1	$	87
	Cash paid for income taxes	$	21,024	$	222

Note_4_Investments_Tables

Note 4 - Investments (Tables)	3 Months Ended
	Mar. 31, 2014
Investments Schedule [Abstract]	'
Held-to-maturity Securities [Table Text Block]	'
	(in $000’s)	Amortized		Gross		Gross			Fair
	31-Mar-14	Cost		Unrecognized		Unrecognized			Value
				Gains		Losses
	Commercial paper	$	104,516	$	26	$	--		$	104,542
	Corporate bonds		156,539		7		(36	)		156,510
	Total short-term investments	$	261,055	$	33	$	(36	)	$	261,052
	(in $000’s)	Amortized		Gross		Gross			Fair
	31-Dec-13	Cost		Unrecognized		Unrecognized			Value
				Gains		Losses
	Commercial paper	$	91,480	$	26	$	--		$	91,506
	Corporate bonds		137,041		13		(21	)		137,033
	Total short-term investments	$	228,521	$	39	$	(21	)	$	228,539

Note_5_Accounts_Receivable_Tab

Note 5 - Accounts Receivable (Tables)	3 Months Ended
	Mar. 31, 2014
Receivables [Abstract]	'
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	'
	(in $000’s)	March 31,			December 31,
		2014			2013
	Gross accounts receivable	$	246,374		$	246,319
	Less: Rebate reserve		(85,658	)		(88,449	)
	Less: Chargeback reserve		(32,766	)		(37,066	)
	Less: Other deductions		(8,429	)		(7,811	)
	Accounts receivable, net	$	119,521		$	112,993
Allowance for Credit Losses on Financing Receivables [Table Text Block]	'
	(in $000’s)	March 31,			December 31,
	Rebate reserve	2014			2013
	Beginning balance	$	88,449		$	46,011
	Provision recorded during the period		53,124			193,288
	Credits issued during the period		(55,915	)		(150,850	)
	Ending balance	$	85,658		$	88,449
	(in $000’s)	March 31,			December 31,
	Chargeback reserve	2014			2013
	Beginning balance	$	37,066		$	18,410
	Provision recorded during the period		103,944			389,707
	Credits issued during the period		(108,244	)		(371,051	)
	Ending balance	$	32,766		$	37,066

Note_6_Inventory_Tables

Note 6 - Inventory (Tables)	3 Months Ended
	Mar. 31, 2014
Inventory Disclosure [Abstract]	'
Schedule of Inventory, Current [Table Text Block]	'
	(in $000’s)	March 31,		December 31,
		2014		2013
	Raw materials	$	26,059	$	27,981
	Work in process		3,115		1,434
	Finished goods		52,032		47,416
	Total inventory		81,206		76,831
	Less: Non-current inventory		5,047		6,725
	Total inventory-current	$	76,159	$	70,107

Note_7_Property_Plant_and_Equi1

Note 7 - Property, Plant and Equipment (Tables)	3 Months Ended
	Mar. 31, 2014
Property, Plant and Equipment [Abstract]	'
Property, Plant and Equipment [Table Text Block]	'
	(in $000’s)	March 31,			December 31,
		2014			2013
	Land	$	5,773		$	5,773
	Buildings and improvements		141,179			139,657
	Equipment		117,543			114,950
	Office furniture and equipment		12,041			11,523
	Construction-in-progress		16,900			15,910
	Property, plant and equipment, gross	$	293,436		$	287,813
	Less: Accumulated depreciation		(103,775	)		(99,622	)
	Property, plant and equipment, net	$	189,661		$	188,191

Note_8_Goodwill_and_Intangible1

Note 8 - Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule of Finite-Lived Intangible Assets [Table Text Block]	'
	(in $000’s)	Initial		Accumulated			Impairment				Carrying
	31-Mar-14	Cost		Amortization							Value
	Amortized intangible assets:
	Zomig® product rights	$	41,783	$	(29,371	)	$	---		$	12,412
	Tolmar product rights		31,450		(4,966	)		(16,032	)		10,452
	Other product rights		2,250		---			(750	)		1,500
	Total intangible assets	$	75,483	$	(34,337	)	$	(16,782	)	$	24,364
	(in $000’s)	Initial		Accumulated			Impairment				Carrying
	31-Dec-13	Cost		Amortization							Value
	Amortized intangible assets:
	Zomig® product rights	$	41,783	$	(28,641	)	$	---		$	13,142
	Tolmar product rights		31,450		(3,266	)		(13,156	)		15,028
	Other product rights		2,250		---			(750	)		1,500
	Total intangible assets	$	75,483	$	(31,907	)	$	(13,906	)	$	29,670
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	'
	(in $000s)	Amortization
		Expense
	2014	$	6,891
	2015		4,835
	2016		3,709
	2017		3,573
	2018		1,984
	Thereafter		1,872
	Totals	$	22,864

Note_9_Accrued_Expenses_Commit1

Note 9 - Accrued Expenses, Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2014
Accrued Liabilities Disclosure [Abstract]	'
Schedule of Accrued Liabilities [Table Text Block]	'
	(in $000’s)	March 31,			December 31,
		2014			2013
	Payroll-related expenses	$	19,509		$	27,985
	Product returns		27,883			28,089
	Government rebates		17,387			23,351
	Accrued shelf-stock		1,101			774
	Legal and professional fees		5,647			3,162
	Income taxes payable		4,352			21,186
	Physician detailing sales force fees		361			1,512
	Other		5,512			5,464
	Total accrued expenses	$	81,752		$	111,523
Schedule of Product Warranty Liability [Table Text Block]	'
	(in $000’s)	March 31,			December 31,
	Returns Reserve	2014			2013
	Beginning balance	$	28,089		$	23,440
	Provision related to sales recorded in the period		1,475			11,015
	Credits issued during the period		(1,681	)		(6,366	)
	Ending balance	$	27,883		$	28,089

Note_13_ShareBased_Compensatio1

Note 13 - Share-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]	'
		Three Months Ended
		March 31,
	(in $000’s)	2014			2013
	Manufacturing expenses	$	896		$	673
	Research and development		1,402			1,376
	Selling, general and administrative		2,088			2,310
	Total	$	4,386		$	4,359
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]	'
			Number of Shares			Weighted Average
			Under Option			Exercise Price
						per Share
	Outstanding at December 31, 2013		3,770,905		$	14.01
	Options granted		3,000		$	25.18
	Options exercised		(364,953	)	$	15.99
	Options forfeited		(18,553	)	$	20.93
	Outstanding at March 31, 2014		3,390,399		$	13.77
	Options exercisable at March 31, 2014		2,476,479		$	11.41
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]	'
	Restricted Stock Awards	Number of Restricted			Weighted Average
		Stock Awards			Grant Date
					Fair Value
	Non-vested at December 31, 2013		2,123,835		$	21.13
	Granted		29,950		$	25.18
	Vested		(30,041	)	$	20.68
	Forfeited		(31,439	)	$	21.47
	Non-vested at March 31, 2014		2,092,305		$	21.19

Note_15_Earnings_Per_Share_Tab

Note 15 - Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	'
		Three Months Ended
		March 31,
	(in $000’s except share and per share amounts)	2014		2013
	Numerator:
	Net income	$	6,425	$	105,442
	Denominator:
	Weighted average common shares outstanding		67,702,296		66,487,470
	Effect of dilutive stock options and restricted stock awards		2,236,576		1,690,885
	Diluted weighted average common shares outstanding		69,938,872		68,178,355
	Basic net income per share	$	0.09	$	1.59
	Diluted net income per share	$	0.09	$	1.55

Note_16_Segment_Information_Ta

Note 16 - Segment Information (Tables)	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Schedule of Segment Reporting Information, by Segment [Table Text Block]	'
	(in $000’s)	Global		Impax			Corporate			Total
	Three Months Ended March 31, 2014	Division		Division			and Other			Company
	Revenues, net	$	109,141	$	9,577		$	---		$	118,718
	Cost of revenues		57,022		4,074			---			61,096
	Research and development		11,217		10,524			---			21,741
	Patent litigation expense		2,173		---			---			2,173
	Income (loss) before provision for income taxes	$	36,346	$	(14,242	)	$	(13,474	)	$	8,630
	(in $000’s)	Global		Impax			Corporate			Total
	Three Months Ended March 31, 2013	Division		Division			and Other			Company
	Revenues, net	$	101,636	$	46,853		$	---		$	148,489
	Cost of revenues		61,444		29,174			---			90,618
	Research and development		11,711		7,894			---			19,605
	Patent litigation expense		4,278		---			---			4,278
	Income (loss) before provision for income taxes	$	19,160	$	(2,979	)	$	137,539		$	153,720

Note_18_Supplementary_Financia1

Note 18 - Supplementary Financial Information (unaudited) (Tables)	3 Months Ended
	Mar. 31, 2014
Quarterly Financial Information Disclosure [Abstract]	'
Schedule of Quarterly Financial Information [Table Text Block]	'
	(in $000’s except shares and per share amounts)	Quarter Ended:
		31-Mar-14
	Revenue:
	Global Product sales, gross	$	265,850
	Less:
	Chargebacks		95,714
	Rebates		52,054
	Product Returns		1,294
	Other credits		10,671
	Global Product sales, net		106,117
	Rx Partner		2,435
	Other Revenues		589
	Global Division revenues, net		109,141
	Impax Product sales, gross		20,643
	Less:
	Chargebacks		8,230
	Rebates		1,070
	Product Returns		181
	Other credits		1,853
	Impax Product sales, net		9,309
	Other Revenues		268
	Impax Division revenues, net		9,577
	Total revenues		118,718
	Gross profit		57,622
	Net income	$	6,425
	Net income per share (basic)	$	0.09
	Net income per share (diluted)	$	0.09
	Weighted average: common shares outstanding:
	Basic		67,702,296
	Diluted		69,938,872
	(in $000’s except shares and per share amounts)	Quarter Ended:
		31-Mar-13
	Revenue:
	Global Product sales, gross	$	197,956
	Less:
	Chargebacks		64,345
	Rebates		30,572
	Product Returns		94
	Other credits		5,160
	Global Product sales, net		97,785
	Rx Partner		3,114
	Other Revenues		737
	Global Division revenues, net		101,636
	Impax Product sales, gross		69,292
	Less:
	Chargebacks		7,790
	Rebates		6,236
	Product Returns		1,490
	Other credits		7,255
	Impax Product sales, net		46,521
	Other Revenues		332
	Impax Division revenues, net		46,853
	Total revenues		148,489
	Gross profit		57,871
	Net income	$	105,442
	Net income per share (basic)	$	1.59
	Net income per share (diluted)	$	1.55
	Weighted average: common shares outstanding:
	Basic		66,487,470
	Diluted		68,178,355

Supplemental_Cash_Flow_Informa2

Supplemental Cash Flow Information (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Supplemental Cash Flow Elements [Abstract]	'	'
Accrued Vendor Invoices	$4,165,000	$4,273,000
Depreciation	$4,973,000	$4,760,000

Supplemental_Cash_Flow_Informa3

Supplemental Cash Flow Information (Details) - Supplemental Disclosure of Non-cash Investing and Financing Activities (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Supplemental Disclosure of Non-cash Investing and Financing Activities [Abstract]	'	'
Cash paid for interest	$1	$87
Cash paid for income taxes	$21,024	$222

Note_1_The_Company_Basis_of_Pr1

Note 1 - The Company & Basis of Presentation (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Note 1 - The Company & Basis of Presentation (Details) [Line Items]	'
Number of Reportable Segments	2
Number Of Channels	4
Number of Internally Developed Late Stage Branded Pharmaceutical Product Candidate	1
Number Of Properties	5
Number Of Leased Properties	3
Equity Method Investment, Ownership Percentage	57.54%
Senior Vice President [Member] | Severance Charges and Accelerated Equity Expense [Member]	'
Note 1 - The Company & Basis of Presentation (Details) [Line Items]	'
Employee-related Liabilities (in Dollars)	0.7

Note_2_Revenue_Recognition_Det

Note 2 - Revenue Recognition (Details)	3 Months Ended
	Mar. 31, 2014
Note 2 - Revenue Recognition (Details) [Line Items]	'
Cash Discount Discount Rate	2.00%
Minimum [Member]	'
Note 2 - Revenue Recognition (Details) [Line Items]	'
Cash Discount Invoice Terms	'30 days
Maximum [Member]	'
Note 2 - Revenue Recognition (Details) [Line Items]	'
Cash Discount Invoice Terms	'90 days

Note_4_Investments_Details_A_S

Note 4 - Investments (Details) - A Summary of Short-Term Investments (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized Cost	$261,055	$228,521
Gross Unrecognized Gains	33	39
Gross Unrecognized Losses	-36	-21
Fair Value	261,052	228,539
Commercial Paper [Member]	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized Cost	104,516	91,480
Gross Unrecognized Gains	26	26
Fair Value	104,542	91,506
Corporate Bonds [Member]	'	'
Schedule of Held-to-maturity Securities [Line Items]	'	'
Amortized Cost	156,539	137,041
Gross Unrecognized Gains	7	13
Gross Unrecognized Losses	-36	-21
Fair Value	$156,510	$137,033

Note_5_Accounts_Receivable_Det

Note 5 - Accounts Receivable (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Receivables [Abstract]	'	'
Allowance for Doubtful Accounts Receivable, Current	$539,000	$539,000

Note_5_Accounts_Receivable_Det1

Note 5 - Accounts Receivable (Details) - The Composition of Accounts Receivable, Net (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
The Composition of Accounts Receivable, Net [Abstract]	'	'
Gross accounts receivable	$246,374	$246,319
Less: Rebate reserve	-85,658	-88,449
Less: Chargeback reserve	-32,766	-37,066
Less: Other deductions	-8,429	-7,811
Accounts receivable, net	$119,521	$112,993

Note_5_Accounts_Receivable_Det2

Note 5 - Accounts Receivable (Details) - A Roll Forward of the Rebate and Chargeback Reserves Activity (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Ending balance	$32,766	$37,066
Ending balance	85,658	88,449
Rebate Reserve [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Beginning balance	88,449	46,011
Provision recorded during the period	53,124	193,288
Credits issued during the period	-55,915	-150,850
Ending balance	85,658	88,449
Chargeback Reserve [Member]	'	'
Financing Receivable, Allowance for Credit Losses [Line Items]	'	'
Provision recorded during the period	103,944	389,707
Credits issued during the period	-108,244	-371,051
Ending balance	32,766	37,066
Beginning balance	$37,066	$18,410

Note_6_Inventory_Details

Note 6 - Inventory (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Mar. 31, 2013	Mar. 31, 2013	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Mar. 31, 2014
			Finished and Unfinished Inventory Related to Discontinued Products [Member]	Impact of Expected Delay of FDA Approval [Member]	Additional Pre-launch Inventory of Product Manufactured for Third-Party [Member]	Unapproved Inventory [Member]	Unapproved Inventory [Member]	Raw Materials [Member]	Finished Goods [Member]
Note 6 - Inventory (Details) [Line Items]	'	'	'	'	'	'	'	'	'
Inventory Valuation Reserves	$19,652,000	$17,702,000	$6,700,000	$5,000,000	$6,400,000	'	'	'	'
Unapproved Product Inventory Net	'	'	'	'	'	$6,953,000	$6,462,000	'	'
Inventory Turnover Period Minimum	'	'	'	'	'	'	'	'3 years	'
Inventory Turnover Period Maximum	'	'	'	'	'	'	'	'5 years	'2 years

Note_6_Inventory_Details_Inven

Note 6 - Inventory (Details) - Inventory, Net of Carrying Value Reserves (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Inventory, Net of Carrying Value Reserves [Abstract]	'	'
Raw materials	$26,059	$27,981
Work in process	3,115	1,434
Finished goods	52,032	47,416
Total inventory	81,206	76,831
Less: Non-current inventory	5,047	6,725
Total inventory-current	$76,159	$70,107

Note_7_Property_Plant_and_Equi2

Note 7 - Property, Plant and Equipment (Details) - Property, Plant and Equipment, Net (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment, Net [Abstract]	'	'
Land	$5,773	$5,773
Buildings and improvements	141,179	139,657
Equipment	117,543	114,950
Office furniture and equipment	12,041	11,523
Construction-in-progress	16,900	15,910
Property, plant and equipment, gross	293,436	287,813
Less: Accumulated depreciation	-103,775	-99,622
Property, plant and equipment, net	$189,661	$188,191

Note_8_Goodwill_and_Intangible2

Note 8 - Goodwill and Intangible Assets (Details) (USD $)

3 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

3 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Jun. 30, 2012

Mar. 31, 2014

Jun. 30, 2012

Mar. 31, 2014

Sep. 30, 2013

Mar. 31, 2014

Sep. 30, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Jun. 30, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Products Approved [Member]

Products Approved [Member]

Product Pending Approval [Member]

Product Pending Approval [Member]

Abbreviated New Drug Applications [Member]

Cost of Sales [Member]

Cost of Sales [Member]

Zomig Product Rights Tablet [Member]

Zomig Product Rights Orally Disintegrating Tablet [Member]

Zomig Product Rights Nasal Spray [Member]

Tolmar Incorporated [Member]

Tolmar Incorporated [Member]

Minimum [Member]

Maximum [Member]

Tolmar Incorporated [Member]

Tolmar Incorporated [Member]

Tolmar Incorporated [Member]

Tolmar Incorporated [Member]

Research and Development Expense [Member]

Tolmar Product Rights [Member]

Tolmar Product Rights [Member]

Note 8 - Goodwill and Intangible Assets (Details) [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill

$27,574,000

'

$27,574,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Finite-Lived Intangible Asset, Useful Life

'

'

'

'

'

'

'

'

'

'

'14 months

'11 months

'72 months

'

'

'5 years

'12 years

Number Of Products

'

'

'

10

10

1

1

'

'

'

'

'

'

11

11

'

'

Impairment of Intangible Assets (Excluding Goodwill)

2,876,000

'

'

'

'

'

'

800,000

2,900,000

13,200,000

'

'

'

'

'

'

'

Impairment of Intangible Assets (Excluding Goodwill), Percent of Carrying Value

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization of Intangible Assets

$2,430,000

$7,142,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Note_8_Goodwill_and_Intangible3

Note 8 - Goodwill and Intangible Assets (Details) - Intangible Assets (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Amortized intangible assets:	'	'
Initial cost	$75,483	$75,483
Accumulated amortization	-34,337	-31,907
Impairment	-16,782	-13,906
Carrying value	24,364	29,670
Other Product Rights [Member]	'	'
Amortized intangible assets:	'	'
Initial cost	2,250	2,250
Impairment	-750	-750
Carrying value	1,500	1,500
Zomig Product Rights [Member]	'	'
Amortized intangible assets:	'	'
Initial cost	41,783	41,783
Accumulated amortization	-29,371	-28,641
Carrying value	12,412	13,142
Tolmar Product Rights [Member]	'	'
Amortized intangible assets:	'	'
Initial cost	31,450	31,450
Accumulated amortization	-4,966	-3,266
Impairment	-16,032	-13,156
Carrying value	$10,452	$15,028

Note_8_Goodwill_and_Intangible4

Note 8 - Goodwill and Intangible Assets (Details) - Expected Amortization Expense (USD $)	Mar. 31, 2014
In Thousands, unless otherwise specified
Expected Amortization Expense [Abstract]	'
2014	$6,891
2015	4,835
2016	3,709
2017	3,573
2018	1,984
Thereafter	1,872
Totals	$22,864

Note_9_Accrued_Expenses_Commit2

Note 9 - Accrued Expenses, Commitments and Contingencies (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Note 9 - Accrued Expenses, Commitments and Contingencies (Details) [Line Items]	'	'
Commitments and Contingencies	'	'
Purchase Order Commitments	63,684,000	'
Purchase Commitment Period	'1 year	'
Taiwan Facility Construction [Member]	'	'
Note 9 - Accrued Expenses, Commitments and Contingencies (Details) [Line Items]	'	'
Commitments and Contingencies	$8,030,000	'

Note_9_Accrued_Expenses_Commit3

Note 9 - Accrued Expenses, Commitments and Contingencies (Details) - The Companybs Accrued Expenses (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
The Companybs Accrued Expenses [Abstract]	'	'
Payroll-related expenses	$19,509	$27,985
Product returns	27,883	28,089
Government rebates	17,387	23,351
Accrued shelf-stock	1,101	774
Legal and professional fees	5,647	3,162
Income taxes payable	4,352	21,186
Physician detailing sales force fees	361	1,512
Other	5,512	5,464
Total accrued expenses	$81,752	$111,523

Note_9_Accrued_Expenses_Commit4

Note 9 - Accrued Expenses, Commitments and Contingencies (Details) - A Roll Forward of the Product Return Reserve (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Note 9 - Accrued Expenses, Commitments and Contingencies (Details) - A Roll Forward of the Product Return Reserve [Line Items]	'	'
Ending balance	$27,883	$28,089
Returns Reserve [Member]	'	'
Note 9 - Accrued Expenses, Commitments and Contingencies (Details) - A Roll Forward of the Product Return Reserve [Line Items]	'	'
Beginning balance	28,089	23,440
Provision related to sales recorded in the period	1,475	11,015
Credits issued during the period	-1,681	-6,366
Ending balance	$27,883	$28,089

Note_10_Income_Taxes_Details

Note 10 - Income Taxes (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Tax Disclosure [Abstract]	'	'
Income Tax Expense (Benefit)	$2,205,000	$48,278,000
Effective Income Tax Rate Reconciliation, Percent	26.00%	31.00%

Note_11_Revolving_Line_of_Cred1

Note 11 - Revolving Line of Credit (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Note 11 - Revolving Line of Credit (Details) [Line Items]	'	'
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)	$50,000,000	'
Equity Interest Pledged As Collateral	65.00%	'
Minimum Unrestricted Cash as Defined in Credit Agreement (in Dollars)	100,000,000	'
Total Net Leverage Ratio	3.75	'
Senior Secured Leverage Ratio	2.5	'
Minimum Consolidated EBITDA (in Dollars)	50,000,000	'
Minimum Liquidity (in Dollars)	100,000,000	'
Debt Instrument, Unused Borrowing Capacity, Fee (in Dollars)	31,000	30,000
Letter of Credit [Member]	'	'
Note 11 - Revolving Line of Credit (Details) [Line Items]	'	'
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)	$10,000,000	'
Minimum [Member] | Alternate Base Rate [Member]	'	'
Note 11 - Revolving Line of Credit (Details) [Line Items]	'	'
Debt Instrument, Basis Spread on Variable Rate	0.50%	'
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]	'	'
Note 11 - Revolving Line of Credit (Details) [Line Items]	'	'
Debt Instrument, Basis Spread on Variable Rate	1.50%	'
Minimum [Member]	'	'
Note 11 - Revolving Line of Credit (Details) [Line Items]	'	'
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.25%	'
Maximum [Member] | Alternate Base Rate [Member]	'	'
Note 11 - Revolving Line of Credit (Details) [Line Items]	'	'
Debt Instrument, Basis Spread on Variable Rate	1.50%	'
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]	'	'
Note 11 - Revolving Line of Credit (Details) [Line Items]	'	'
Debt Instrument, Basis Spread on Variable Rate	2.50%	'
Maximum [Member]	'	'
Note 11 - Revolving Line of Credit (Details) [Line Items]	'	'
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.45%	'

Note_12_Alliance_and_Collabora1

Note 12 - Alliance and Collaboration Agreements (Details) (USD $)

3 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

25 Months Ended

3 Months Ended

1 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

3 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Jun. 30, 2012

Mar. 31, 2014

Jun. 30, 2012

Mar. 31, 2014

Dec. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Mar. 31, 2011

Dec. 31, 2009

Sep. 30, 2009

Mar. 31, 2009

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Dec. 31, 2008

Dec. 31, 2010

Jun. 30, 2010

Mar. 31, 2011

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Sep. 30, 2013

Mar. 31, 2014

Sep. 30, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Jun. 30, 2012

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2012

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Products Approved [Member]

Products Approved [Member]

Product Pending Approval [Member]

Product Pending Approval [Member]

Products in Development [Member]

Generic Products [Member]

Branded Advanced Form of Solodyn Product [Member]

Milestone Payments [Member]

Milestone Payments [Member]

Milestone Payments [Member]

Milestone Payments [Member]

Milestone Payments [Member]

Milestone Payments [Member]

Milestone Payments [Member]

Milestone Payments [Member]

Milestone Payments [Member]

Up-front Payment Arrangement [Member]

Up-front Payment Arrangement [Member]

Up-front Payment Arrangement [Member]

Milestone Payment Arrangement [Member]

Clinical Milestone Events [Member]

Regulatory Milestone Events [Member]

Commercialization Events [Member]

Cost of Sales [Member]

Cost of Sales [Member]

Cost of Sales [Member]

Cost of Sales [Member]

Acceptance Of Regulatory Filings For Substantive Review [Member]

Specified Threshold [Member]

Shire Laboratories Incorporated [Member]

Shire Laboratories Incorporated [Member]

Tolmar Incorporated [Member]

Tolmar Incorporated [Member]

Tolmar Incorporated [Member]

Tolmar Incorporated [Member]

Teva Pharmaceutical Industries Limited [Member]

Pfizer Incorporated [Member]

Valeant [Member]

Astra Zeneca [Member]

Astra Zeneca [Member]

Endo Pharmaceuticals Incorporation [Member]

DURECT Corporation [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Tolmar Incorporated [Member]

Tolmar Incorporated [Member]

Tolmar Incorporated [Member]

Tolmar Incorporated [Member]

Tolmar Incorporated [Member]

Valeant [Member]

Valeant [Member]

Tolmar Incorporated [Member]

Tolmar Incorporated [Member]

Valeant [Member]

Valeant [Member]

Valeant [Member]

Valeant [Member]

Valeant [Member]

Glaxo Group Limited [Member]

Endo Pharmaceuticals Incorporation [Member]

Valeant [Member]

Glaxo Group Limited [Member]

Endo Pharmaceuticals Incorporation [Member]

Valeant [Member]

Endo Pharmaceuticals Incorporation [Member]

Endo Pharmaceuticals Incorporation [Member]

Endo Pharmaceuticals Incorporation [Member]

Tolmar Product Rights [Member]

Tolmar Product Rights [Member]

IND-enabling Animal Studies for New Development Candidate [Member]

Phase 1 Trials [Member]

Phase 2 Trials [Member]

Phase 3 Trials [Member]

Bioequivalence Studies [Member]

Preparation And Submission Of Regulatory Filings [Member]

Potential Marketing Approval One [Member]

Potential Marketing Approval Two [Member]

Tolmar Product Rights [Member]

IND-enabling Animal Studies for New Development Candidate [Member]

Phase 1 Trials [Member]

Phase 2 Trials [Member]

Phase 3 Trials [Member]

Bioequivalence Studies [Member]

Preparation And Submission Of Regulatory Filings [Member]

Potential Marketing Approval One [Member]

Potential Marketing Approval Two [Member]

Tolmar Product Rights [Member]

Note 12 - Alliance and Collaboration Agreements (Details) [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Completion Period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'12 months

'1 year

'1 year

'2 years

'3 months

'6 months

'1 year

'1 year

'

'18 months

'2 years

'3 years

'4 years

'1 year

'12 months

'3 years

'3 years

'

Product Sales

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$100,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Litigation Settlement, Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

48,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Increase (Decrease) in Other Accrued Liabilities

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,447,000

5,640,000

'

2,961,000

490,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number Of Products

'

'

10

10

1

1

2

4

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11

11

'

'

'

'

5

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Collaborative Arrangement Up Front Payment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

21,000,000

'

'

'

'

'

'

2,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Collaborative Arrangement Required Payment Net

'

'

'

'

'

'

'

'

'

12,000,000

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Collaborative Arrangement Maximum Contingent Payments Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

8,000,000

169,000,000

30,000,000

'

'

'

'

15,000,000

5,000,000

10,000,000

'

'

'

'

'

'

'

'

'

24,000,000

'

'

'

'

'

'

'

'

61,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Finite-Lived Intangible Asset, Useful Life

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'12 years

Research and Development Expense

21,741,000

19,605,000

'

'

'

'

1,550,000

'

'

'

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Impairment of Intangible Assets (Excluding Goodwill)

2,876,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,900,000

13,200,000

2,900,000

13,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum Loan Amount Pursuant to Loan and Security Agreement

15,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loans Receivable, Net

15,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Service Agreement Term

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'10 years

'15 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Collaborative Arrangement Maximum Profit Share Payments Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred Revenue, Revenue Recognized

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

327,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Collaborative Arrangement Contingent Payments Received And Potentially To Be Received

'

'

'

'

'

'

'

'

'

'

'

3,000,000

2,000,000

5,000,000

5,000,000

'

'

'

40,000,000

'

'

15,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred Revenue, Additions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11,500,000

10,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accrued Royalties

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,615,000

16,282,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Collaborative Arrangement Copromotion Service Fee Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred Revenue Estimated Period Of Recognition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'103 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Deferred Revenue

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5,071,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain (Loss) Related to Litigation Settlement

'

$102,049,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Note_13_ShareBased_Compensatio2

Note 13 - Share-Based Compensation (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Note 13 - Share-Based Compensation (Details) [Line Items]	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	0.00%	'
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)	$35,280,000	'
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	'1 year 357 days	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number (in Shares)	3,001,000	'
undefined (in Shares)	1,852,000	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value (in Dollars)	3,789,000	2,933,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value (in Dollars)	$621,000	$613,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)	3,533,694	'
Stock Options and Restricted Stock Awards [Member]	'	'
Note 13 - Share-Based Compensation (Details) [Line Items]	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period	'10 years	'
Stock Options and Restricted Stock Awards [Member] | Minimum [Member]	'	'
Note 13 - Share-Based Compensation (Details) [Line Items]	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	'3 years	'
Stock Options and Restricted Stock Awards [Member] | Maximum [Member]	'	'
Note 13 - Share-Based Compensation (Details) [Line Items]	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	'4 years	'
Restricted Stock Awards [Member] | Minimum [Member]	'	'
Note 13 - Share-Based Compensation (Details) [Line Items]	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	'3 years	'
Restricted Stock Awards [Member] | Maximum [Member]	'	'
Note 13 - Share-Based Compensation (Details) [Line Items]	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	'4 years	'

Note_13_ShareBased_Compensatio3

Note 13 - Share-Based Compensation (Details) - Share-Based Compensation Expense Recognized by the Company (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Share-Based Compensation	$4,386	$4,359
Manufacturing Expenses [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Share-Based Compensation	896	673
Research and Development Expense [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Share-Based Compensation	1,402	1,376
Selling, General and Administrative Expenses [Member]	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'
Share-Based Compensation	$2,088	$2,310

Note_13_ShareBased_Compensatio4

Note 13 - Share-Based Compensation (Details) - Summary of Stock Option Activity (USD $)	3 Months Ended
	Mar. 31, 2014
Summary of Stock Option Activity [Abstract]	'
Options Outstanding	3,770,905
Options Outstanding	$14.01
Options exercisable at March 31, 2014	2,476,479
Options exercisable at March 31, 2014	$11.41
Options granted	3,000
Options granted	$25.18
Options exercised	-364,953
Options exercised	$15.99
Options forfeited	-18,553
Options forfeited	$20.93
Options Outstanding	3,390,399
Options Outstanding	$13.77

Note_13_ShareBased_Compensatio5

Note 13 - Share-Based Compensation (Details) - A Summary of Non-Vested Restricted Stock Awards (USD $)	3 Months Ended
	Mar. 31, 2014
A Summary of Non-Vested Restricted Stock Awards [Abstract]	'
Non-vested	2,123,835
Non-vested	$21.13
Granted	29,950
Granted	$25.18
Vested	-30,041
Vested	$20.68
Forfeited	-31,439
Forfeited	$21.47
Non-vested	2,092,305
Non-vested	$21.19

Note_14_Stockholders_Equity_De

Note 14 - Stockholders' Equity (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Stockholders' Equity Note [Abstract]	'	'
Preferred Stock, Shares Authorized	2,000,000	2,000,000
Preferred Stock, Par or Stated Value Per Share	$0.01	$0.01
Common Stock, Shares Authorized	90,000,000	90,000,000
Common Stock, Par or Stated Value Per Share	$0.01	$0.01

Note_15_Earnings_Per_Share_Det

Note 15 - Earnings Per Share (Details)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	331,500	1,276,394

Note_15_Earnings_Per_Share_Det1

Note 15 - Earnings Per Share (Details) - Reconciliation of Basic and Diluted Earnings per Share (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Reconciliation of Basic and Diluted Earnings per Share [Abstract]	'	'
Net income (in Dollars)	$6,425	$105,442
Weighted average common shares outstanding	67,702,296	66,487,470
Effect of dilutive stock options and restricted stock awards	2,236,576	1,690,885
Diluted weighted average common shares outstanding	69,938,872	68,178,355
Basic net income per share (in Dollars per share)	$0.09	$1.59
Diluted net income per share (in Dollars per share)	$0.09	$1.55

Note_16_Segment_Information_De

Note 16 - Segment Information (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Note 16 - Segment Information (Details) [Line Items]	'	'
Number of Reportable Segments	2	'
Number of Internally Developed Late Stage Branded Pharmaceutical Product Candidate	1	'
Assets (in Dollars)	$982,205,000	$996,923,000
Taiwan Facility Construction [Member]	'	'
Note 16 - Segment Information (Details) [Line Items]	'	'
Assets (in Dollars)	$139,784,000	'

Note_16_Segment_Information_De1

Note 16 - Segment Information (Details) - Segment Information Reconciled to Total Company Consolidated Financial Results (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]	'	'
Revenues, net	$118,718,000	$148,489,000
Cost of revenues	61,096,000	90,618,000
Research and development	21,741,000	19,605,000
Patent litigation expense	2,173,000	4,278,000
Income (loss) before provision for income taxes	8,630,000	153,720,000
Global Division [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Revenues, net	109,141,000	101,636,000
Cost of revenues	57,022,000	61,444,000
Research and development	11,217,000	11,711,000
Patent litigation expense	2,173,000	4,278,000
Income (loss) before provision for income taxes	36,346,000	19,160,000
Impax Division [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Revenues, net	9,577,000	46,853,000
Cost of revenues	4,074,000	29,174,000
Research and development	10,524,000	7,894,000
Income (loss) before provision for income taxes	-14,242,000	-2,979,000
Corporate and Other [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Income (loss) before provision for income taxes	($13,474,000)	$137,539,000

Note_17_Legal_and_Regulatory_M1

Note 17 - Legal and Regulatory Matters (Details)	1 Months Ended		3 Months Ended	1 Months Ended	4 Months Ended	3 Months Ended	1 Months Ended
	Aug. 31, 2011	Sep. 30, 2009	Mar. 31, 2014	Apr. 30, 2014	Oct. 31, 2013	Mar. 31, 2014	Apr. 08, 2013
				Subsequent Event [Member]	Solodyn [Member]	Litigation Costs Sharing With Third Parties [Member]	Securities Class Actions [Member]
Note 17 - Legal and Regulatory Matters (Details) [Line Items]	'	'	'	'	'	'	'
Loss Contingency Patent Infringement Litigation Period Within Which Patent Holder May File Suit For Patent Infringement	'	'	'45 days	'	'	'	'
Loss Contingency Patent Infringement Litigation Maximum Stay Period For Approval Of Abbreviated New Drug Application	'	'	'30 months	'	'	'	'
Number Of Products	'	'	'	'	'	3	'
Number Of Agreements	'	'	'	'	'	2	'
Loss Contingency, Patents Found Not Infringed, Number	4	'	'	'	'	'	'
Loss Contingency, Patents Allegedly Infringed, Number	'	5	'	3	'	'	'
Loss Contingency, Patents Found Infringed, Number	'	'	'	2	'	'	'
Number of Class Action Complaints	'	'	'	'	13	'	2

Note_18_Supplementary_Financia2

Note 18 - Supplementary Financial Information (unaudited) (Details) - Selected Financial Information for the Quarterly Periods Noted (USD $)

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

In Thousands, except Share data, unless otherwise specified

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

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Global Division [Member]

Global Division [Member]

Global Division [Member]

Global Division [Member]

Global Division [Member]

Global Division [Member]

Global Division [Member]

Global Division [Member]

Global Division [Member]

Global Division [Member]

Global Division [Member]

Global Division [Member]

Impax Division [Member]

Impax Division [Member]

Impax Division [Member]

Impax Division [Member]

Impax Division [Member]

Impax Division [Member]

Impax Division [Member]

Impax Division [Member]

Chargeback Reserve [Member]

Chargeback Reserve [Member]

Rebate Reserve [Member]

Rebate Reserve [Member]

Chargeback Reserve [Member]

Chargeback Reserve [Member]

Rebate Reserve [Member]

Rebate Reserve [Member]

Other Credits [Member]

Other Credits [Member]

Rx Partner [Member]

Rx Partner [Member]

Other Revenues [Member]

Other Revenues [Member]

Chargeback Reserve [Member]

Chargeback Reserve [Member]

Rebate Reserve [Member]

Rebate Reserve [Member]

Other Credits [Member]

Other Credits [Member]

Note 18 - Supplementary Financial Information (unaudited) (Details) - Selected Financial Information for the Quarterly Periods Noted [Line Items]

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Sales revenue goods gross

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$265,850

$197,956

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$20,643

$69,292

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Sales allowances goods

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95,714

64,345

52,054

30,572

10,671

5,160

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8,230

7,790

1,070

6,236

1,853

7,255

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103,944

389,707

53,124

193,288

Sales revenue goods net

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106,117

97,785

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9,309

46,521

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Sales revenue net

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2,435

3,114

589

737

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268

332

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Revenues

118,718

148,489

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109,141

101,636

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9,577

46,853

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Gross profit

57,622

57,871

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Net income

6,425

105,442

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Net income per share (basic) (in Dollars per share)

$0.09

$1.59

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Net income per share (diluted) (in Dollars per share)

$0.09

$1.55

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Weighted average: common shares outstanding:

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Basic (in Shares)

67,702,296

66,487,470

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Diluted (in Shares)

69,938,872

68,178,355

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Product Returns

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$1,294

$94

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$181

$1,490

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