Sale of Royalties	12 Months Ended
Dec. 31, 2018
Sale Of Royalties [Abstract]
Sale of Royalties	Sale of Royalties On December 13, 2016, the Company entered into the SWK Purchase Agreement with SWK pursuant to which the Company sold, and SWK purchased, the Company’s right to receive, commencing on October 1, 2016, all Royalties (as defined in the SWK Purchase Agreement) arising from the sale by Adapt, pursuant to the Adapt Agreement of NARCAN or any other intranasal naloxone opioid overdose reversal treatment, up to (i) $20,625,000 million and then the Residual Royalty thereafter or (ii)$26,250,000, if Adapt has received in excess of $25,000,000 of cumulative Net Sales for any two consecutive fiscal quarters during the period from October 1, 2016 through September 30, 2017 from the sale of NARCAN® (the “Earn Out Milestone”), and then the Residual Royalty thereafter. The Residual Royalty is defined in the Purchase Agreement as follows: (i) if the Earn Out Milestone is paid, then SWK will receive 10% of all Royalties; provided, however, if no generic version of NARCAN® is commercialized prior to the sixth anniversary of the Closing, then SWK shall receive 5% of all Royalties after such date, and (ii) if the Earn Out Milestone is not paid, then SWK will receive 7.86% of all Royalties; provided, however, that if no generic version of NARCAN® is commercialized prior to the sixth anniversary of the Closing, then SWK will receive 3.93% of all Royalties after such date. Under the Purchase Agreement, the Company received an upfront purchase price of $13,750,000 less $40,000 of legal fees at Closing, and will receive an additional $3,750,000 if the Earn Out Milestone is achieved (the “Purchase Price”). The Purchase Agreement also grants SWK (i) the right to receive the statements produced by Adapt pursuant to Section 5.6 of the Adapt Agreement and (ii) the right, to the extent possible under the Purchase Agreement, to cure any breach of or default under any Product Agreement by the Company. Under the Purchase Agreement, the Company granted SWK a security interest in the Purchased Assets in the event that the transfer contemplated by the Purchase Agreement is held not to be a sale. The Purchase Agreement also contains other representations, warranties, covenants and indemnification obligations that are customary for a transaction of this nature. Absent fraud by the Company, the Company’s indemnification obligations under the Purchase Agreement shall not exceed, individually or in the aggregate, an amount equal to the Purchase Price plus an annual rate of return of 12% (compounded monthly) as of any date of determination, with a total indemnification cap not to exceed 150% of the Purchase Price, less all Royalties received by SWK, without duplication, under the Purchase Agreement prior to and through resolution of the applicable claim. All capitalized terms not otherwise defined herein shall have the meanings ascribed to such terms in the Purchase Agreement. During the fiscal year ended July 31, 2017, the Company recognized $17.46 million as revenue because (i) the executed agreement constituted persuasive evidence of an arrangement, (ii) the Company had no current or future performance obligations, (iii) the total consideration was fixed and known at the time of its execution and there were no rights of return, (iv) the $13.71 million cash proceeds received in December 2016 were non-refundable, and (v) the $3,750,000 million Earn Out Milestone that was accrued as an account receivable as of July 31, 2017, and subsequently paid to the Company on August 9, 2017, was earned as of July 31, 2017. As of December 31, 2017, the Company determined that the Capped Royalty Amount provided in the SWK Purchase Agreement has been met. After December 31, 2017, SWK's share of the royalty and milestone payments are reduced to 10% of amounts earned from Adapt.

Sale of Royalties

On December 13, 2016, the Company entered into the SWK Purchase Agreement with SWK pursuant to which the Company sold, and SWK purchased, the Company’s right to receive, commencing on October 1, 2016, all Royalties (as defined in the SWK Purchase Agreement) arising from the sale by Adapt, pursuant to the Adapt Agreement of NARCAN or any other intranasal naloxone opioid overdose reversal treatment, up to (i) $20,625,000 million and then the Residual Royalty thereafter or (ii)$26,250,000, if Adapt has received in excess of $25,000,000 of cumulative Net Sales for any two consecutive fiscal quarters during the period from October 1, 2016 through September 30, 2017 from the sale of NARCAN® (the “Earn Out Milestone”), and then the Residual Royalty thereafter. The Residual Royalty is defined in the Purchase Agreement as follows: (i) if the Earn Out Milestone is paid, then SWK will receive 10% of all Royalties; provided, however, if no generic version of NARCAN® is commercialized prior to the sixth anniversary of the Closing, then SWK shall receive 5% of all Royalties after such date, and (ii) if the Earn Out Milestone is not paid, then SWK will receive 7.86% of all Royalties; provided, however, that if no generic version of NARCAN® is commercialized prior to the sixth anniversary of the Closing, then SWK will receive 3.93% of all Royalties after such date. Under the Purchase Agreement, the Company received an upfront purchase price of $13,750,000 less $40,000 of legal fees at Closing, and will receive an additional $3,750,000 if the Earn Out Milestone is achieved (the “Purchase Price”). The Purchase Agreement also grants SWK (i) the right to receive the statements produced by Adapt pursuant to Section 5.6 of the Adapt Agreement and (ii) the right, to the extent possible under the Purchase Agreement, to cure any breach of or default under any Product Agreement by the Company. Under the Purchase Agreement, the Company granted SWK a security interest in the Purchased Assets in the event that the transfer contemplated by the Purchase Agreement is held not to be a sale. The Purchase Agreement also contains other representations, warranties, covenants and indemnification obligations that are customary for a transaction of this nature. Absent fraud by the Company, the Company’s indemnification obligations under the Purchase Agreement shall not exceed, individually or in the aggregate, an amount equal to the Purchase Price plus an annual rate of return of 12% (compounded monthly) as of any date of determination, with a total indemnification cap not to exceed 150% of the Purchase Price, less all Royalties received by SWK, without duplication, under the Purchase Agreement prior to and through resolution of the applicable claim. All capitalized terms not otherwise defined herein shall have the meanings ascribed to such terms in the Purchase Agreement.

During the fiscal year ended July 31, 2017, the Company recognized $17.46 million as revenue because (i) the executed agreement constituted persuasive evidence of an arrangement, (ii) the Company had no current or future performance obligations, (iii) the total consideration was fixed and known at the time of its execution and there were no rights of return, (iv) the $13.71 million cash proceeds received in December 2016 were non-refundable, and (v) the $3,750,000 million Earn Out Milestone that was accrued as an account receivable as of July 31, 2017, and subsequently paid to the Company on August 9, 2017, was earned as of July 31, 2017.

As of December 31, 2017, the Company determined that the Capped Royalty Amount provided in the SWK Purchase Agreement has been met. After December 31, 2017, SWK's share of the royalty and milestone payments are reduced to 10% of amounts earned from Adapt.