Subsequent Events	12 Months Ended
Dec. 31, 2014
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Convertible Senior Notes Due 2022 On January 13, 2015, the Company completed its private offering of $400.0 million aggregate principal amount of its 2.50% convertible senior notes due 2022 (the 2022 notes) and entered into an indenture (the Indenture) with Wells Fargo Bank, National Association, a national banking association, as trustee (the Trustee), governing the 2022 notes. The aggregate principal amount of 2022 notes sold reflects the exercise in full by the initial purchasers of the 2022 notes of their option to purchase up to an additional $50.0 million in aggregate principal amount of the 2022 notes. The net proceeds to the Company from the offering were $387.1 million after deducting the initial purchasers' discounts and commissions and the offering expenses payable by the Company. The Company has not completed its accounting analysis, but expects to account for the 2022 notes as a liability and equity component where the carrying value of the liability component will be valued based on a similar instrument. The 2022 notes will bear cash interest at a rate of 2.50% per year, payable semi-annually on January 15 and July 15 of each year, beginning on July 15, 2015. The 2022 notes will mature on January 15, 2022. Holders may convert their 2022 notes at their option at any time prior to the close of business on the business day immediately preceding October 15, 2021 only under the following circumstances: (1) during any calendar quarter commencing on or after March 31, 2015 (and only during such calendar quarter), if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day; (2) during the five business day period after any five consecutive trading day period (the ‘‘measurement period’’) in which the trading price (as defined in the Indenture governing the 2022 notes) per $1,000 principal amount of 2022 notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate on each such trading day; (3) during any period after the Company has issued notice of redemption until the close of business on the scheduled trading day immediately preceding the relevant redemption date; or (4) upon the occurrence of specified corporate events. On or after October 15, 2021, until the close of business on the second scheduled trading day immediately preceding the maturity date, holders may convert their 2022 notes at any time, regardless of the foregoing circumstances. Upon conversion, the Company will pay cash up to the aggregate principal amount of the 2022 notes to be converted and deliver shares of its common stock in respect of the remainder, if any, of its conversion obligation in excess of the aggregate principal amount of 2022 notes being converted, subject to a daily share cap. The conversion rate for the 2022 notes will initially be 29.8806 shares of the Company’s common stock per $1,000 principal amount of the 2022 notes, which is equivalent to an initial conversion price of approximately $33.47 per share of the Company’s common stock. The initial conversion price of the 2022 notes represents a premium of approximately 35.0% to the last reported sale price per share of the Company’s common stock of $24.79 per share on January 7, 2015, the date that the Company priced the private offering of the 2022 notes. The Company may not redeem the 2022 notes prior to January 15, 2019. The Company may redeem for cash all or any portion of the 2022 notes, at its option, on or after January 15, 2019 if the last reported sale price of its common stock has been at least 130% of the conversion price then in effect on the last trading day of, and for at least 19 other trading days (whether or not consecutive) during, any 30 consecutive trading day period ending on, and including, the trading day immediately preceding the date on which the Company provides notice of redemption, at a redemption price equal to 100% of the principal amount of the 2022 notes to be redeemed, plus accrued and unpaid interest to, but excluding, the redemption date. No sinking fund is provided for the 2022 notes, which means that the Company is not required to redeem or retire the 2022 notes periodically. If the Company undergoes a fundamental change (as defined in the Indenture governing the 2022 notes), subject to certain conditions, holders of the 2022 notes may require the Company to repurchase for cash all or part of their 2022 notes at a repurchase price equal to 100% of the principal amount of the 2022 notes to be repurchased, plus accrued and unpaid interest to, but excluding, the fundamental change repurchase date. The 2022 notes are senior unsecured obligations of the Company and will rank senior in right of payment to the Company’s future indebtedness that is expressly subordinated in right of payment to the 2022 notes; equal in right of payment to the Company’s existing and future unsecured indebtedness that is not so subordinated; effectively junior in right of payment to any of the Company’s secured indebtedness to the extent of the value of the assets securing such indebtedness; and structurally junior to all existing and future indebtedness and other liabilities (including trade payables) incurred by the Company’s subsidiaries. The Indenture governing the 2022 notes contains customary events of default with respect to the 2022 notes, including that upon certain events of default (including the Company’s failure to make any payment of principal or interest on the 2022 notes when due and payable) occurring and continuing, the Trustee by notice to the Company, or the holders of at least 25% in principal amount of the outstanding 2022 notes by notice to the Company and the Trustee, may, and the Trustee at the request of such holders (subject to the provisions of the Indenture) shall, declare 100% of the principal of and accrued and unpaid interest, if any, on all the 2022 notes to be due and payable. In case of certain events of bankruptcy, insolvency or reorganization, involving the Company or a significant subsidiary, 100% of the principal of and accrued and unpaid interest on the 2022 notes will automatically become due and payable. Upon such a declaration of acceleration, such principal and accrued and unpaid interest, if any, will be due and payable immediately. Annovation. On February 2, 2015, the Company completed the acquisition of Annovation BioPharma, Inc. (Annovation), and Annovation became the Company's wholly owned subsidiary. As a result of the acquisition of Annovation, the Company acquired ABP-700, a novel intravenous anesthetic. Under the terms of the terms of the acquisition agreement, the Company paid to the holders of Annovation’s capital stock and the holders of options to purchase shares of Annovation’s capital stock, which the Company refers to collectively as the Annovation equityholders, an aggregate of approximately $28.4 million in cash. In addition, the Company may be obligated to pay Annovation's equityholders up to an additional $26.3 million in milestone payments subsequent to the closing if the Company achieves certain development and regulatory approval milestones at the times and on the conditions set forth in the acquisition agreement. The Company has also agreed to pay Annovation equityholders a low single digit percentage of worldwide net sales, if any, of certain Annovation products, including ABP-700, during a specified earnout period. In addition, as a result of the Company's acquisition of Annovation, it, through its subsidiary Annovation, is a party to a license agreement with The General Hospital Corporation. Under the agreement, the Company will be obligated to pay General Hospital Corporation up to an aggregate of $6.5 million upon achievement of specified development, regulatory and sales milestones. The Company will also be obligated to pay General Hospital Corporation low single-digit percentage royalties on a product-by-product and country-by-country basis based on net sales of ABP-700 products until the later of the duration of the licensed patent rights which are necessary to manufacture, use or sell ABP-700 products in a country and the date ten years from the Company first commercial sale of ABP-700 products in such country. Recothrom. On February 6, 2015, the Company completed the acquisition of Recothrom assets from BMS. In February 2013, pursuant to a master transaction agreement with BMS, the Company acquired the right to sell, distribute and market Recothrom on a global basis for a two-year period, which is referred to as the collaboration term, and certain limited assets exclusively related to Recothrom, primarily the biologics license application for Recothrom and certain related regulatory assets. BMS also granted to the Company, under the master transaction agreement, an option to purchase from BMS and its affiliates, following the expiration or earlier termination of the collaboration term, certain other assets, including certain patent and trademark rights, contracts, inventory, equipment and related books and records, held by BMS which are exclusively related to Recothrom. Pursuant to the agreement, the Company exercised the option and on February 6, 2015 completed the acquisition of the remaining assets held by BMS which are exclusively related to Recothrom. Under the master transaction agreement, in February 2013 the Company paid to BMS a one-time collaboration fee equal to $105.0 million and a one-time option fee equal to $10.0 million. Upon closing the exercise of the option in February 2015, the Company paid BMS approximately $127.7 million in the aggregate, including approximately $39.3 million for inventory. In addition, the Company has agreed to pay BMS up to an additional $4.9 million upon the delivery of certain additional inventory following the closing, subject to specified terms and conditions. The Company did not assume any pre-existing liabilities related to the Recothrom business, contingent or otherwise, arising prior to the collaboration period, and the Company did not acquire any significant tangible assets related to the Recothrom business, other than inventory. Under the master transaction agreement, the Company paid BMS quarterly tiered royalty payments during the two-year collaboration term equal to a percentage of worldwide net sales of Recothrom.

Subsequent Events

Convertible Senior Notes Due 2022

On January 13, 2015, the Company completed its private offering of $400.0 million aggregate principal amount of its 2.50% convertible senior notes due 2022 (the 2022 notes) and entered into an indenture (the Indenture) with Wells Fargo Bank, National Association, a national banking association, as trustee (the Trustee), governing the 2022 notes. The aggregate principal amount of 2022 notes sold reflects the exercise in full by the initial purchasers of the 2022 notes of their option to purchase up to an additional $50.0 million in aggregate principal amount of the 2022 notes. The net proceeds to the Company from the offering were $387.1 million after deducting the initial purchasers' discounts and commissions and the offering expenses payable by the Company. The Company has not completed its accounting analysis, but expects to account for the 2022 notes as a liability and equity component where the carrying value of the liability component will be valued based on a similar instrument.

The 2022 notes will bear cash interest at a rate of 2.50% per year, payable semi-annually on January 15 and July 15 of each year, beginning on July 15, 2015. The 2022 notes will mature on January 15, 2022.

Holders may convert their 2022 notes at their option at any time prior to the close of business on the business day immediately preceding October 15, 2021 only under the following circumstances: (1) during any calendar quarter commencing on or after March 31, 2015 (and only during such calendar quarter), if the last reported sale price of the Company’s common stock for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on the last trading day of the immediately preceding calendar quarter is greater than or equal to 130% of the conversion price on each applicable trading day; (2) during the five business day period after any five consecutive trading day period (the ‘‘measurement period’’) in which the trading price (as defined in the Indenture governing the 2022 notes) per $1,000 principal amount of 2022 notes for each trading day of the measurement period was less than 98% of the product of the last reported sale price of the Company’s common stock and the conversion rate on each such trading day; (3) during any period after the Company has issued notice of redemption until the close of business on the scheduled trading day immediately preceding the relevant redemption date; or (4) upon the occurrence of specified corporate events. On or after October 15, 2021, until the close of business on the second scheduled trading day immediately preceding the maturity date, holders may convert their 2022 notes at any time, regardless of the foregoing circumstances. Upon conversion, the Company will pay cash up to the aggregate principal amount of the 2022 notes to be converted and deliver shares of its common stock in respect of the remainder, if any, of its conversion obligation in excess of the aggregate principal amount of 2022 notes being converted, subject to a daily share cap.

The conversion rate for the 2022 notes will initially be 29.8806 shares of the Company’s common stock per $1,000 principal amount of the 2022 notes, which is equivalent to an initial conversion price of approximately $33.47 per share of the Company’s common stock. The initial conversion price of the 2022 notes represents a premium of approximately 35.0% to the last reported sale price per share of the Company’s common stock of $24.79 per share on January 7, 2015, the date that the Company priced the private offering of the 2022 notes.

The Company may not redeem the 2022 notes prior to January 15, 2019. The Company may redeem for cash all or any portion of the 2022 notes, at its option, on or after January 15, 2019 if the last reported sale price of its common stock has been at least 130% of the conversion price then in effect on the last trading day of, and for at least 19 other trading days (whether or not consecutive) during, any 30 consecutive trading day period ending on, and including, the trading day immediately preceding the date on which the Company provides notice of redemption, at a redemption price equal to 100% of the principal amount of the 2022 notes to be redeemed, plus accrued and unpaid interest to, but excluding, the redemption date. No sinking fund is provided for the 2022 notes, which means that the Company is not required to redeem or retire the 2022 notes periodically.

If the Company undergoes a fundamental change (as defined in the Indenture governing the 2022 notes), subject to certain conditions, holders of the 2022 notes may require the Company to repurchase for cash all or part of their 2022 notes at a repurchase price equal to 100% of the principal amount of the 2022 notes to be repurchased, plus accrued and unpaid interest to, but excluding, the fundamental change repurchase date.

The 2022 notes are senior unsecured obligations of the Company and will rank senior in right of payment to the Company’s future indebtedness that is expressly subordinated in right of payment to the 2022 notes; equal in right of payment to the Company’s existing and future unsecured indebtedness that is not so subordinated; effectively junior in right of payment to any of the Company’s secured indebtedness to the extent of the value of the assets securing such indebtedness; and structurally junior to all existing and future indebtedness and other liabilities (including trade payables) incurred by the Company’s subsidiaries.

The Indenture governing the 2022 notes contains customary events of default with respect to the 2022 notes, including that upon certain events of default (including the Company’s failure to make any payment of principal or interest on the 2022 notes when due and payable) occurring and continuing, the Trustee by notice to the Company, or the holders of at least 25% in principal amount of the outstanding 2022 notes by notice to the Company and the Trustee, may, and the Trustee at the request of such holders (subject to the provisions of the Indenture) shall, declare 100% of the principal of and accrued and unpaid interest, if any, on all the 2022 notes to be due and payable. In case of certain events of bankruptcy, insolvency or reorganization, involving the Company or a significant subsidiary, 100% of the principal of and accrued and unpaid interest on the 2022 notes will automatically become due and payable. Upon such a declaration of acceleration, such principal and accrued and unpaid interest, if any, will be due and payable immediately.

Annovation. On February 2, 2015, the Company completed the acquisition of Annovation BioPharma, Inc. (Annovation), and Annovation became the Company's wholly owned subsidiary. As a result of the acquisition of Annovation, the Company acquired ABP-700, a novel intravenous anesthetic. Under the terms of the terms of the acquisition agreement, the Company paid to the holders of Annovation’s capital stock and the holders of options to purchase shares of Annovation’s capital stock, which the Company refers to collectively as the Annovation equityholders, an aggregate of approximately $28.4 million in cash. In addition, the Company may be obligated to pay Annovation's equityholders up to an additional $26.3 million in milestone payments subsequent to the closing if the Company achieves certain development and regulatory approval milestones at the times and on the conditions set forth in the acquisition agreement. The Company has also agreed to pay Annovation equityholders a low single digit percentage of worldwide net sales, if any, of certain Annovation products, including ABP-700, during a specified earnout period. In addition, as a result of the Company's acquisition of Annovation, it, through its subsidiary Annovation, is a party to a license agreement with The General Hospital Corporation. Under the agreement, the Company will be obligated to pay General Hospital Corporation up to an aggregate of $6.5 million upon achievement of specified development, regulatory and sales milestones. The Company will also be obligated to pay General Hospital Corporation low single-digit percentage royalties on a product-by-product and country-by-country basis based on net sales of ABP-700 products until the later of the duration of the licensed patent rights which are necessary to manufacture, use or sell ABP-700 products in a country and the date ten years from the Company first commercial sale of ABP-700 products in such country.

Recothrom. On February 6, 2015, the Company completed the acquisition of Recothrom assets from BMS. In February 2013, pursuant to a master transaction agreement with BMS, the Company acquired the right to sell, distribute and market Recothrom on a global basis for a two-year period, which is referred to as the collaboration term, and certain limited assets exclusively related to Recothrom, primarily the biologics license application for Recothrom and certain related regulatory assets. BMS also granted to the Company, under the master transaction agreement, an option to purchase from BMS and its affiliates, following the expiration or earlier termination of the collaboration term, certain other assets, including certain patent and trademark rights, contracts, inventory, equipment and related books and records, held by BMS which are exclusively related to Recothrom. Pursuant to the agreement, the Company exercised the option and on February 6, 2015 completed the acquisition of the remaining assets held by BMS which are exclusively related to Recothrom.

Under the master transaction agreement, in February 2013 the Company paid to BMS a one-time collaboration fee equal to $105.0 million and a one-time option fee equal to $10.0 million. Upon closing the exercise of the option in February 2015, the Company paid BMS approximately $127.7 million in the aggregate, including approximately $39.3 million for inventory. In addition, the Company has agreed to pay BMS up to an additional $4.9 million upon the delivery of certain additional inventory following the closing, subject to specified terms and conditions. The Company did not assume any pre-existing liabilities related to the Recothrom business, contingent or otherwise, arising prior to the collaboration period, and the Company did not acquire any significant tangible assets related to the Recothrom business, other than inventory. Under the master transaction agreement, the Company paid BMS quarterly tiered royalty payments during the two-year collaboration term equal to a percentage of worldwide net sales of Recothrom.