Summary of Significant Accounting Policies | Summary of Significant Accounting Policies Principles of Consolidation The consolidated financial statements include the accounts of Teligent, Inc. and its wholly-owned and majority-owned subsidiaries. All inter-company accounts and transactions have been eliminated. The Company consolidated the following entities: Igen, Inc., Teligent Pharma. Inc., Teligent Luxembourg S.à.r.l., Teligent OÜ, Teligent Canada Inc., and Teligent Jersey Limited., in addition to the following inactive entities: Microburst Energy, Inc., Blood Cells, Inc. and Flavorsome, Ltd. Cash Equivalents Cash equivalents include cash on hand and money market funds. The carrying amounts approximate the fair value due to the short term maturity of these investments. Money market funds are short-term investments, which have original maturities of 90 days or less. These include direct obligations of the U.S. Treasury, including bills, notes and bonds, as well as obligations issued or guaranteed by agencies or instrumentalities of the U.S. government including government-sponsored enterprises, or GSEs. The Company has restricted cash, consisting of escrow accounts (see Note 12) and letter of credits, totaling $0.5 million as of December 31, 2017 and December 31, 2016 . These balances are included within Other Assets on the Consolidated Balance Sheet. Fair Value of Financial Instruments The carrying amounts of cash and cash equivalents, trade receivables, restricted cash, notes payable, accounts payable and other accrued liabilities at December 31, 2017 approximate their fair value for all periods presented. The Company measures fair value in accordance with ASC 820-10, “Fair Value Measurements and Disclosures”. ASC 820-10 clarifies that fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or a liability. As a basis for considering such assumptions, ASC 820-10 establishes a three-tier value hierarchy, which prioritizes the inputs used in the valuation methodologies in measuring fair value: Level 1 Inputs: Unadjusted quoted prices in active markets for identical assets or liabilities accessible to the reporting entity at the measurement date. Level 2 Inputs: Other than quoted prices included in Level 1 inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the asset or liability. Level 3 Inputs: Unobservable inputs for the asset or liability used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at measurement date. The fair value hierarchy also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. Accounts Receivable and Allowance for Doubtful Accounts The Company extends credit to its contract services customers based upon credit evaluations in the normal course of business, primarily with 30 -day terms. The Company does not require collateral from its customers. Bad debt provisions are provided for on the allowance method based on historical experience and management’s evaluation of outstanding accounts receivable. The Company reviews the allowance for doubtful accounts regularly, and past due balances are reviewed individually for collectability. The Company charges off uncollectible receivables against the allowance when the likelihood of collection is remote. The Company extends credit to wholesaler and distributor customers and national retail chain customers, based upon credit evaluations, in the normal course of business, primarily with 60 to 90 day terms. The Company maintains customer-related accruals and allowances that consist primarily of chargebacks, rebates, sales returns, shelf stock allowances, administrative fees and other incentive programs. Some of these adjustments relate specifically to the generic prescription pharmaceutical business. Typically, the aggregate gross-to-net adjustments related to these customers can exceed 70% of the gross sales through this distribution channel. Certain of these accruals and allowances are recorded in the balance sheet as current liabilities and others are recorded as a reduction to accounts receivable. Revenue Recognition The Company considers revenue realized or realizable and earned when it has persuasive evidence of an arrangement, delivery has occurred or contractual services rendered, the sales price is fixed or determinable, and collection is reasonably assured in conformity with ASC 605, Revenue Recognition . The Company derives its revenues from three basic types of transactions: sales of its own generic pharmaceutical topical products, sales of manufactured product for its customers included in product sales, and research and product development services and other services performed for third parties. Due to differences in the substance of these transaction types, the transactions require, and the Company utilizes, different revenue recognition policies for each. Product Sales: Product Sales, net, include Company Product Sales and Contract Manufacturing Sales. Company Product Sales: The Company records revenue from Company product sales when title and risk of ownership have been transferred to the customer, which is typically upon delivery of products to the customer. Revenue and Provision for Sales Returns and Allowances As is customary in the pharmaceutical industry, the Company’s gross product sales from Company label products are subject to a variety of deductions in arriving at reported net product sales. When the Company recognizes revenue from the sale of products, an estimate of sales returns and allowances (“SRA”) is recorded, which reduces product sales. Accounts receivable and/or accrued expenses are also reduced and/or increased by the SRA amount. These adjustments include estimates for chargebacks, rebates, cash discounts and returns and other allowances. These provisions are estimates based on historical payment experience, historical relationship to revenues, estimated customer inventory levels and current contract sales terms with direct and indirect customers. The estimation process used to determine our SRA provision has been applied on a consistent basis and no material adjustments have been necessary to increase or decrease our reserves for SRA as a result of a significant change in underlying estimates. The Company will use a variety of methods to assess the adequacy of our SRA reserves to ensure that our financial statements are fairly stated. These will include periodic reviews of customer inventory data, customer contract programs, subsequent actual payment experience, and product pricing trends to analyze and validate the SRA reserves. The provision for chargebacks is our most significant sales allowance. A chargeback represents an amount payable in the future to a wholesaler for the difference between the invoice price paid to the Company by our wholesale customer for a particular product and the negotiated contract price that the wholesaler’s customer pays for that product. The Company’s chargeback provision and related reserve varies with changes in product mix, changes in customer pricing and changes to estimated wholesaler inventories. The provision for chargebacks also takes into account an estimate of the expected wholesaler sell-through levels to indirect customers at contract prices. The Company will validate the chargeback accrual quarterly through a review of the inventory reports obtained from our largest wholesale customers. This customer inventory information is used to verify the estimated liability for future chargeback claims based on historical chargeback and contract rates. These large wholesalers represent 90% - 95% of the Company’s chargeback payments. The Company continually monitors current pricing trends and wholesaler inventory levels to ensure the liability for future chargebacks is fairly stated. Net revenues and accounts receivable balances in the Company’s consolidated financial statements are presented net of SRA estimates. Certain SRA balances are included in accounts payable and accrued expenses. Accounts receivable are presented net of SRA balances of $28.5 million and $41.5 million at December 31, 2017 and 2016, respectively. Accounts payable and accrued expenses include $7.0 million and 3.5 million at December 31, 2017 and 2016, respectively, for certain fees related to services provided by the wholesalers. Wholesale fees of $7.0 million , $3.7 million and $6.3 million for the years ended December 31, 2017, 2016 and 2015, respectively, were included in cost of goods sold. In addition, in connection with four of the 29 products the Company currently manufactures, markets and distributes in its own label in the U.S., in accordance with an agreement entered into in December of 2011, the Company is required to pay a royalty calculated based on net sales to one of its pharmaceutical partners. The royalty is calculated based on contracted terms of 40% of net sales for the four products, which is to be paid quarterly to the pharmaceutical partner that the agreement is with. In accordance with the agreement, net sales exclude fees related to services provided by the wholesalers. Accounts payable and accrued expenses include $0.9 million and $0.8 million at December 31, 2017 and 2016, respectively, related to these royalties. Royalty expense of $2.2 million , $3.0 million and $3.6 million was included in cost of goods sold for the years ended December 31, 2017, 2016, and 2015 respectively. The Company includes significant estimates to arrive at net product sales arising from wholesaler chargebacks, Medicaid and Medicare rebates, allowances and other pricing and promotional programs. Contract Manufacturing Sales: The Company recognizes revenue when title transfers to its customers, which is generally upon shipment of products. These shipments are made in accordance with sales commitments and related sales orders entered into with customers either verbally or in written form. The revenues associated with these transactions, net of appropriate cash discounts, product returns and sales reserves, are recorded upon shipment of the products and are included in product sales, net on the Company's Consolidated Statement of Operations. Research and Development Income: The Company establishes agreed upon product development agreements with its customers to perform product development services. Product development revenues are recognized in accordance with the product development agreement upon the completion of the phases of development and when the Company has no future performance obligations relating to that phase of development. Revenue recognition requires the Company to assess progress against contracted obligations to assure completion of each stage. These payments are generally non-refundable and are reported as deferred until they are recognizable as revenue. If no such arrangement exists, product development fees are recognized ratably over the entire period during which the services are performed. Other types of revenue include royalty or licensing revenue, and would be recognized based upon the contractual agreement upon completion of the earnings process. In making such assessments, judgments are required to evaluate contingencies such as potential variances in schedule and the costs, the impact of change orders, liability claims, contract disputes and achievement of contractual performance standards. Changes in total estimated contract cost and losses, if any, are recognized in the period they are determined. Billings on research and development contracts are typically based upon terms agreed upon by the Company and customer and are stated in the contracts themselves and do not always align with the revenues recognized by the Company. Concentration of Risk Financial instruments, which subject the Company to concentrations of credit risk, consist primarily of cash equivalents and trade receivables. These include direct obligations of the U.S. Treasury, including bills, notes and bonds, as well as obligations issued or guaranteed by agencies or instrumentalities of the U.S. government including GSEs, which are not federally insured. The Company maintains its cash in accounts with quality financial institutions. Although the Company currently believes that the financial institutions with which the Company does business will be able to fulfill their commitments to us, there is no assurance that those institutions will be able to continue to do so. In 2017, the Company had sales to three customers which individually accounted for more than 10% of the Company’s total revenue. These customers had sales of $18.7 million , $9.9 million and $9.6 million , respectively, and represented 57% of total revenues in the aggregate. Accounts receivable related to the Company’s major customers comprised of 47% , 15% and 14% , respectively, and represented 76% of all accounts receivable as of December 31, 2017. In 2016, the Company had sales to three customers which individually accounted for more than 10% of the Company’s total revenue. These customers had sales of $13.5 million , $8.6 million and $6.8 million , respectively, and represented 43% of total revenues in the aggregate. Accounts receivable related to the Company’s major customers comprised of 20% , 56% and 11% , respectively, and represented 81% of all accounts receivable as of December 31, 2016. In 2015, the Company had sales to three customers which individually accounted for more than 10% of the Company’s total revenue. These customers had sales of $12.3 million and $5.8 million and $6.5 million , respectively, and represented 52% of total revenues in the aggregate. Accounts receivable related to the Company’s major customers comprised of 43% , 33% and 6% , respectively, and represented 83% of all accounts receivable as of December 31, 2015. The Company had net revenue from one product, Econazole Nitrate Cream 1%, which accounted for 4% , 8% , and 45% of total revenues in 2017, 2016 and 2015, respectively. Lidocaine Ointment 5%, which the Company launched at the end of the first quarter of 2016 accounted for 17% and 23% of total revenues in 2017 and 2016. Zantac for injection, which the Company acquired in the fourth quarter of 2015, accounted for 10% , 3% and 0% of total revenues in 2017, 2016 and 2015. For the year ended December 31, 2017, domestic net revenues were $53.5 million and foreign net revenues were $13.8 million . As of December 31, 2017, domestic assets were $117.7 million and foreign assets were $72.3 million . For the year ended December 31, 2016, domestic net revenues were $56.1 million and foreign net revenues were $10.8 million . As of December 31, 2016, domestic assets were $120.0 million and foreign assets were $63.2 million . For the year ended December 31, 2015, domestic net revenues were $42.7 million and foreign net revenues were $1.6 million . As of December 31, 2015, domestic assets were $129.0 million and foreign assets were $51.7 million . While the company purchases raw materials to manufacture certain products, it also utilizes contract manufacturing organizations (CMO's) to purchase finished products. The Company currently purchases from numerous sources which therefore reduces the risk of delays or difficulties in getting materials and/or products. Inventories Inventories are valued at the lower of cost, using the first-in, first-out (“FIFO”) method, or market. The Company records an inventory reserve for losses associated with dated, expired, excess and obsolete raw materials. This reserve is based on management’s current knowledge with respect to inventory levels, planned production, and extension capabilities of materials on hand. Management does not believe the Company’s inventory is subject to significant risk of obsolescence in the near term. Property, Plant and Equipment Depreciation and amortization of property, plant and equipment is provided for under the straight-line method over the assets’ estimated useful lives as follows: Useful Lives Buildings and improvements 10 - 40 years Machinery and equipment 5 - 15 years Computer hardware and software 3 - 5 years Furniture and fixtures 5 years Leasehold improvements are amortized over the shorter of estimated useful life or the lease term. Repair and maintenance costs are charged to operations as incurred while major improvements are capitalized. Construction in progress ("CIP") costs are amortized based on the asset class when they are put into service. When assets are retired or disposed, the related cost and accumulated depreciation thereon are removed and any gains or losses are included in operating results. Intangible Assets Definite-lived intangible assets are stated at cost less accumulated amortization. Amortization of definite-lived intangible assets is computed on a straight-line basis over the assets’ estimated useful lives, generally for periods ranging from 10 to 15 years . The Company continually evaluates the reasonableness of the useful lives of these assets. Indefinite-lived intangible assets are not amortized, but instead are tested at least annually for impairment. Costs to renew or extend the term of a recognized intangible asset are expensed as incurred. An impairment is recognized in the amount, if any, by which the carrying amount of such assets exceeds their respective fair values and would be recorded in the selling, general and administrative expense on the Consolidated Statements of Operations. In-Process Research and Development Amounts allocated to in-process research and development (“IPR&D”) in connection with a business combination are recorded at fair value and are considered indefinite-lived intangible assets subject to the impairment testing in accordance with the Company’s impairment testing policy for indefinite-lived intangible assets. As products in development are approved for sale, amounts will be allocated to product rights and will be amortized over their estimated useful lives. These valuations reflect, among other things, the impact of changes to the development programs, the projected development and regulatory time frames and the current competitive environment. Changes in any of the Company’s assumptions may result in a reduction to the estimated fair value of the IPR&D asset and could result in future impairment charges. Long-Lived Assets In accordance with the provisions of ASC 360-10-55, the Company reviews its long-lived assets for impairment whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable. In performing such review for recoverability, the Company compares expected future cash flows of assets to the carrying value of the long-lived assets and related identifiable intangibles. If the expected future cash flows (undiscounted) are less than the carrying amount of such assets, the Company recognizes an impairment loss for the difference between the carrying value of the assets and their estimated fair value, with fair values being determined using projected discounted cash flows at the lowest level of cash flows identifiable in relation to the assets being reviewed. As of December 31, 2017 , no impairments existed. Goodwill Goodwill, which represents the excess of purchase price over the fair value of net assets acquired, is carried at cost. Goodwill is tested for impairment on an annual basis during the fourth quarter of each fiscal year or more frequently if events or changes in circumstances indicate that the asset might be impaired. The Company first performs a qualitative assessment to determine if the quantitative impairment test is required. If changes in circumstances indicate an asset may be impaired, the Company performs the quantitative impairment test. In accordance with accounting standards, a two-step quantitative method is used for determining goodwill impairment. In the first step, the Company determines the fair value. If the net book value exceeds its fair value, the second step of the impairment test which requires allocation of the fair value to all of its assets and liabilities using the acquisition method prescribed under authoritative guidance for business combinations would then be performed. Any residual fair value is allocated to goodwill. An impairment charge is recognized only if the implied fair value of our reporting unit’s goodwill is less than its carrying amount. The carrying value of goodwill at December 31, 2017 was $0.5 million . We believe it is unlikely that there will be a material change in the future estimates or assumptions used to test for impairment losses on goodwill. However, if actual results were not consistent with our estimates or assumptions, we could be exposed to an impairment charge. Acquisitions The Company accounts for acquired businesses using the acquisition method of accounting, which requires with limited exceptions, that assets acquired and liabilities assumed be recognized at their estimated fair values as of the acquisition date. Transaction costs are expensed as incurred. Any excess of the consideration transferred over the assigned values of the net assets acquired is recorded as goodwill. When net assets that do not constitute a business are acquired, no goodwill is recognized. Contingent consideration, if any, is included as part of the acquisition cost and is recognized at fair value as of the acquisition date. Any liability resulting from contingent consideration is remeasured to fair value at each reporting date until the contingency is resolved. These changes in fair value are recognized in earnings. Foreign Currency Translation The net assets of international subsidiaries where the local currencies have been determined to be the functional currencies are translated into U.S. dollars using current exchange rates. The U.S. dollar effects that arise from translating the net assets of these subsidiaries at changing rates are recorded in the foreign currency translation account, which is included in accumulated other comprehensive income (loss) (AOCI) and reflected as a separate component of equity. For those subsidiaries where the U.S. dollar has been determined to be the functional currency, non-monetary foreign currency assets and liabilities are translated using historical rates, while monetary assets and liabilities are translated at current rates, with the U.S. dollar effects of rate changes included in Other (income) expense, net. Foreign exchange gain of $7.7 million was recorded for the year ended December 31, 2017 , primarily related to the foreign currency translation of our intercompany loans denominated in U.S. dollars to our foreign subsidiaries. These loans are to be repaid in November 2022. Depending on the changes in foreign currency exchange rates, we will continue to record a non-cash gain or loss on translation for the remainder of the term of these loans. Due to the nature of this transaction, there is no economic benefit to the Company to hedge this transaction. Accounting for Environmental Costs Accruals for environmental remediation are recorded when it is probable a liability has been incurred and costs are reasonably estimable. The estimated liabilities are recorded at undiscounted amounts. Environmental insurance recoveries are included in the statement of operations in the year in which the issue is resolved through settlement or other appropriate legal process. Income Taxes The Company records income taxes in accordance with ASC 740-10, “Accounting for Income Taxes,” under the asset and liability method of accounting for income taxes. Under the asset and liability method, deferred income taxes are recognized for the tax consequences of temporary differences by applying enacted statutory tax rates applicable to future years to operating loss and tax credit carry forwards and differences between the financial statement carrying amounts and the tax bases of existing assets and liabilities. The effect on deferred taxes of a change in tax rates is recognized in income in the period that includes the enactment date. A valuation allowance is recorded based on a determination of the ultimate realizability of future deferred tax assets. The Company complies with the provisions of ASC 740-10-25 that clarifies the accounting for uncertainty in income taxes recognized in an entity’s financial statements in accordance with ASC 740-10, “Accounting for Income Taxes,” and prescribes a recognition threshold and a measurement attribute for the financial statement recognition and measurement of tax positions taken or expected to be taken in a tax return. For those benefits to be recognized, a tax position must be more-likely-than-not to be sustained upon examination by taxing authorities. Additionally, ASC 740-10 provides guidance on derecognition, classification, interest and penalties, accounting in interim periods, disclosure and transition. There were no unrecognized tax benefits as of the date of adoption. As such, there are no unrecognized tax benefits included in the balance sheet that would, if recognized, affect the effective tax rate. The Company records interest and penalties relating to uncertain tax positions as a component of income tax expense. Stock-Based Compensation ASC 718-10 defines the fair-value-based method of accounting for stock-based employee compensation plans and transactions used by the Company to account for its issuances of equity instruments to record compensation cost for stock-based employee compensation plans at fair value as well as to acquire goods or services from non-employees. Transactions in which the Company issues stock-based compensation to employees, directors and advisors and for goods or services received from non-employees are accounted for based on the fair value of the equity instruments issued. The Company utilizes pricing models in determining the fair values of options, RSU's and warrants issued as stock-based compensation. These pricing models utilize the market price of the Company’s common stock and the exercise price of the option or warrant, as well as time value and volatility factors underlying the positions. Stock-based compensation expense is recognized over the requisite service period of the award, which usually coincides with the vesting period of the grant. Debt Issuance Costs Expenses related to debt financing activities are capitalized and amortized on an effective interest method, over the term of the loan. For more details, refer to Note 5. ASU 2015-3 specifies that debt issuance costs are to be netted against the carrying value of the financial liability. Under prior guidance, debt issuance costs were recognized as a deferred charge and reported as a separate asset on the balance sheet. The updated guidance aligns the treatment of debt issuance costs and debt discounts in that both reduce the carrying value of the liability. Amortization of debt issuance costs is to be recorded as interest expense on the income statement. Product Development and Research The Company’s research and development costs are expensed as incurred. Shipping and Handling Costs Costs related to shipping and handling is comprised of outbound freight and the associated labor. These costs are recorded in costs of sales. For the years ended December 31, 2017 , 2016 and 2015 , the costs relating to shipping and handling totaled $1.2 million , $0.7 million and $0.2 million , respectively. Earnings (Loss) per Common Share Basic earnings (loss) per share of common stock is computed based on the weighted average number of shares of common stock outstanding during the period. Diluted earnings (loss) per share of common stock is computed using the weighted average number of shares of common stock and potential dilutive common stock equivalents outstanding during the period. Potential dilutive common stock equivalents include shares issuable upon the conversion of the notes and the exercise of options and warrants. Due to the net loss for the years ended December 31, 2017 and 2016, the effect of the Company’s potential dilutive common stock equivalents was anti-dilutive; as a result, the basic and diluted weighted average number of common shares outstanding and net loss per common share are the same. As of December 31, 2017, the shares of common stock issuable in connection with stock options and warrants have been excluded from the diluted earnings (loss) per share, as their effect would have been anti-dilutive. For the years ended December 31, 2017, 2016 and 2015 (in thousands except shares and per share data) 2017 2016 2015 Basic earnings (loss) per share computation: Net income (loss) attributable to common stockholders —basic $ (15,191 ) $ (11,985 ) $ 6,668 Weighted average common shares —basic 53,323,954 53,078,158 52,872,814 Basic earnings (loss) per share $ (0.28 ) $ (0.23 ) $ 0.13 Dilutive earnings (loss) per share computation: Net income (loss) attributable to common stockholders —basic $ (15,191 ) $ (11,985 ) $ 6,668 Interest expense related to convertible 3.75% senior notes — — 5,391 Amortization of discount related to convertible 3.75% senior notes — $ — $ 6,680 Change in the fair value of derivative — $ — $ (23,144 ) Net loss attributable to common stockholders —diluted $ (15,191 ) $ (11,985 ) $ (4,405 ) Share Computation: Weighted average common shares —basic 53,323,954 53,078,158 52,872,814 Effect of convertible 3.75% senior notes — — 12,732,168 Effect of dilutive stock options and warrants — — 1,507,013 Weighted average common shares outstanding —diluted 53,323,954 53,078,158 67,111,995 Diluted net loss per share $ (0.28 ) $ (0.23 ) $ (0.07 ) Derivatives The Company accounts for its derivative instruments in accordance with ASC 815-10, “Derivatives and Hedging” (“ASC 815-10”). ASC 815-10 establishes accounting and reporting standards requiring that derivative instruments, including derivative instruments embedded in other contracts, be recorded on the balance sheet as either an asset or liability measured at its fair value. ASC 815-10 also requires that changes in the fair value of derivative instruments be recognized currently in results of operations unless specific hedge accounting criteria are met. The Company has not entered into hedging activities to date. The Company’s derivative liability is the embedded convertible option of its Convertible Notes issued December 16, 2014 (as defined in Note 5), which has been recorded as a liability at fair value until May 20, 2015, and was revalued at each reporting date, with changes in the fair value of the instruments included in the consolidated statements of operations as non-operating income (expense). Due to the approval of the sufficient shares at the Company’s annual shareholder meeting, the liability for the embedded derivative was reclassified to equity on May 20, 2015. The Company had no derivatives at December 31, 2017 and December 31, 2016. Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (GAAP) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates include the historical valuation of the derivative liability, SRA allowances, allowances for excess and obsolete inventories, allowances for doubtful accounts, provisions for income taxes and related deferred tax asset valuation allowances, stock based compensation, the impairment of long-lived assets (including intangibles, goodwill and property, plant and equipment), property, plant and equipment and legal accruals for environmental cleanup and remediation costs. Actual results could differ from those estimates. Reclassification Certain prior year amounts were reclassified to conform to current year presentation. For the year ended December 31, 2016, the impact of such reclassification of the non-cash portion of the capital expenditures would have been a reduction of both cash from operating activities and cash used in investing activities, in the amount of $1.9 million . Adoption of Rece |