Business And Significant Policies (Policies)	3 Months Ended
Business And Significant Policies (Policies)	Mar. 31, 2019
BASIS OF PRESENTATION
Use of Estimates	Use of Estimates The preparation of these unaudited condensed consolidated financial statements requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosures. On an ongoing basis, the Company evaluates its estimates, including critical accounting policies or estimates related to available-for-sale securities, debt instruments, research and development expenses, income taxes, inventories, revenues, contingencies and litigation and share-based compensation. The Company bases its estimates on historical experience, information received from third parties and on various market specific and other relevant assumptions that it believes to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results could differ significantly from those estimates under different assumptions or conditions.
Inventories	Inventories are stated at the lower of cost or net realizable value. Cost is determined using the first in, first out method for all inventories, which are valued using a weighted-average cost method calculated for each production batch. The Company periodically evaluates the carrying value of inventory on hand for potential excess amounts over demand using the same lower of cost or net realizable value approach as that used to value the inventory
Revenue Recognition	Revenue Recognition For all revenue transactions, the Company evaluates its contracts with its customers to determine revenue recognition using the following five-step model: 1)The Company identifies the contract(s) with a customer 2)The Company identifies the performance obligations in the contract 3)The Company determines the transaction price 4)The Company allocates the transaction price to the identified performance obligations 5)The Company recognizes revenue when (or as) the entity satisfies a performance obligation Product Revenue Product revenue is recognized at the time of shipment at which time the Company has satisfied its performance obligation. Product revenue is recognized net of consideration paid to the Company’s customers, wholesalers and certified pharmacies. Such consideration is for services rendered by the wholesalers and pharmacies in accordance with the wholesalers and certified pharmacy services network agreements, and includes a fixed rate per prescription shipped and monthly program management and data fees. These services are not deemed sufficiently separable from the customers’ purchase of the product; therefore, they are recorded as a reduction of revenue at the time of revenue recognition. Other product revenue allowances include a reserve for estimated product returns, certain prompt pay discounts and allowances offered to the Company’s customers, program rebates and chargebacks. These product revenue allowances are recognized as a reduction of revenue at the date at which the related revenue is recognized. The Company also offers discount programs to patients. Calculating certain of these items involves estimates and judgments based on sales or invoice data, contractual terms, utilization rates, new information regarding changes in these programs’ regulations and guidelines that would impact the amount of the actual rebates or chargebacks. The Company reviews the adequacy of product revenue allowances on a quarterly basis. Amounts accrued for product revenue allowances are adjusted when trends or significant events indicate that adjustment is appropriate and to reflect actual experience. See Note 9 for product reserve balances. Supply Revenue The Company produces STENDRA/SPEDRA through a contract manufacturing partner and then sells it to the Company’s commercialization partners. The Company is the primary responsible party in the commercial supply arrangements and bears significant risk in the fulfillment of the obligations, including risks associated with manufacturing, regulatory compliance and quality assurance, as well as inventory, financial and credit loss. As such, the Company recognizes supply revenue on a gross basis as the principal party in the arrangements. The Company recognizes supply revenue at the time of shipment and, in the unusual case where the product does not meet contractually-specified product dating criteria at the time of shipment to the partner, the Company records a reserve for estimated product returns. There are no such reserves as of March 31, 2019. License and Milestone Revenue License and milestone revenues related to arrangements, usually license and/or supply agreements, entered into by the Company are recognized by following the five-step process outlined above. The allocation and timing of recognition of such revenue will be determined by that process and the amounts recognized and the timing of that recognition may not exactly follow the wording of the agreement as the amount allocated following the accounting analysis of the agreement may differ and the timing of recognition of a significant performance obligation may predate the contractual date. Royalty Revenue The Company relies on data provided by its collaboration partner in determining its contractually-based royalty revenue. Such data includes accounting estimates and reports for various discounts and allowances, including product returns. The Company records royalty revenues based on the best data available and makes any adjustments to such revenues as such information becomes available.
Income Taxes	The Company’s policy is to recognize interest and penalties related to uncertain tax positions (if any) as a component of the income tax provision.
Recent Accounting Pronouncements Adopted	Recent Accounting Pronouncement Adopted In February 2016, the FASB issued Accounting Standards Update 2016-02, Leases (Topic 842), which modifies the accounting by lessees for all leases with a term greater than 12 months. This standard requires lessees to recognize on the balance sheet the assets and liabilities for the rights and obligations created by those leases. The Company adopted this standard on January 1, 2019 using the modified retrospective transition method, and as a result did not adjust comparative periods. The Company’s only significant lease is its operating lease for its corporate headquarters, although it has several smaller leases, including financing leases for its automobile fleet and copiers. See Note 12. Recent Accounting Pronouncements Not Yet Adopted In June 2016, the FASB issued Accounting Standards Update 2016-13, Measurement of Credit Losses on Financial Instruments, which requires credit losses on most financial assets measured at amortized cost and certain other instruments to be measured using an expected credit loss model, referred to as the current expected credit loss (CECL) model. Under this model, entities will estimate credit losses over the entire contractual term of the instrument. This standard is effective for fiscal years beginning after December 15, 2019 and early adoption is permitted. The Company is evaluating the potential impact of this standard, but does not expect it to have a material impact on its consolidated financial statements. In August 2018, the FASB issued Accounting Standards Update 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement, which adds disclosure requirements to Topic 820 for the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. This standard is effective for fiscal years beginning after December 31, 2019 and early adoption is permitted. The Company is evaluating the provisions of this guidance, but currently does not expect it to have a material impact on its consolidated financial statements.
Cash, Cash Equivalents and Available-for-Sale Securities	As of March 31, 2019, the Company’s available-for-sale securities had original contractual maturities up to 57 months. However, the Company may sell these securities prior to their stated maturities in response to changes in the availability of and the yield on alternative investments as well as liquidity requirements. As these securities are readily marketable and are viewed by the Company as available to support current operations, securities with maturities beyond 12 months are classified as current assets. Due to their short-term maturities, the Company believes that the fair value of its bank deposits, accounts payable and accrued expenses approximate their carrying value.

Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.