Summary of Significant Accounting Policies | Summary of Significant Accounting Policies Basis of Presentation and Consolidation The accompanying unaudited consolidated condensed financial statements include the accounts of CBLI, BioLab 612, and Panacela. The accounts of Incuron are presented using the equity method of accounting for the period from January 1, 2015 through April 29, 2015, the date that we completed a sale of our entire equity interests in Incuron. All significant intercompany balances and transactions have been eliminated in consolidation. The consolidated condensed balance sheet as of December 31, 2015 , which has been derived from audited financial statements, and the unaudited interim consolidated condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States (" GAAP ") for interim consolidated financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X of the Securities and Exchange Commission (" SEC "). Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. These consolidated condensed financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 , as filed with the SEC. In the opinion of the Company’s management, any adjustments contained in the accompanying unaudited consolidated financial statements are of a normal recurring nature, and are necessary to fairly present the financial position of the Company as of March 31, 2016 , along with its results of operations for the three month periods ended March 31, 2016 and 2015 and cash flows for the three month periods ended March 31, 2016 and 2015 . Interim results are not necessarily indicative of results that may be expected for any other interim period or for an entire year. On January 28, 2015, the Company, after receiving approval from the Company’s shareholders and board of directors, executed a reverse stock split of the Company’s common stock at the ratio of 1:20 . Unless otherwise indicated, all of the Company’s historical share balances and share price-related data have been adjusted, on a retroactive basis, to reflect this ratio. At March 31, 2016 , we had cash, cash equivalents and short-term investments of $18.0 million in the aggregate. Management believes this capital will fund its operations and cash requirements beyond one year. Recent Accounting Pronouncements In March 2016, the Financial Accounting Standards Board (“FASB”) issued a new standard that changes the accounting for certain aspects of share-based payments to employees. The new guidance requires excess tax benefits and tax deficiencies to be recorded in the income statement when the awards vest or are settled. In addition, cash flows related to excess tax benefits will no longer be separately classified as a financing activity apart from other income tax cash flows. The standard also allows us to repurchase more of an employee’s shares for tax withholding purposes without triggering liability accounting, clarifies that all cash payments made on an employee’s behalf for withheld shares should be presented as a financing activity on our cash flows statement, and provides an accounting policy election to account for forfeitures as they occur. The new standard is effective for us beginning January 1, 2017, with early adoption permitted. This new standard is not expected to have a significant impact on the Company’s financial statements. In February 2016, the FASB issued a new standard related to leases to increase transparency and comparability among organizations by requiring the recognition of lease assets and lease liabilities on the balance sheet. Most prominent among the amendments is the recognition of assets and liabilities by lessees for those leases classified as operating leases under previous U.S. GAAP. Under the new standard, disclosures are required to meet the objective of enabling users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The new standard will be effective for us beginning January 1, 2019, with early adoption permitted. We are currently evaluating the impact of this statement. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, 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. Actual results could differ from those estimates. Short-Term Investments The Company’s short-term investments are classified as available for sale. Accordingly, these investments are carried at fair market value. Short-term investments consisted of United States Treasury securities in the amount of $7.4 million which were owned by CBLI and had maturities of less than 12 months . Unrealized gains and losses on available for-sale investments are reported as Other Comprehensive Loss, a separate component of stockholders’ equity. Realized gains and losses, and interest and dividends on available-for-sale securities are recorded in our Consolidated Statement of Operations as Interest and Other Expense. The cost of securities sold is based on the specific identification method. Significant Customers and Accounts Receivable The following table presents our revenue by customer, on a proportional basis, for the three months ended March 31, 2016 and 2015 . Three Months Ended March 31, Customer 2016 2015 Variance Department of Defense 30.4 % — % 30.4 % Russian Government Agencies 41.0 % 58.2 % (17.2 )% Incuron, LLC 28.6 % 41.8 % (13.2 )% Total 100.0 % 100.0 % — % Although the Company anticipates recurring revenue from these customers, there is no guarantee that these revenue streams will continue in the future. Accounts receivable consist of amounts due under reimbursement contracts with these customers. The Company extends unsecured credit to customers under normal trade agreements, which generally require payment within 30 days . Restricted Cash Restricted cash includes certificates of deposit, denominated in Russian rubles, which collateralize Panacela and BioLab 612 contracts with the Ministry of Industry and Trade of the Russian Federation. These deposits provide additional assurance that Panacela and BioLab 612 will satisfactorily perform their statements of work under the contracts. Both Panacela and BioLab 612 anticipate receiving these deposits at the completion of the contracts. We previously disclosed that the Bank of Russia appointed temporary management of NOTA-Bank and that we had written off the full value of our deposits with NOTA-Bank, as of the year ended December 31, 2015. The remaining amount of "Restricted Cash" at March 31, 2016 , is on deposit with other banking institutions. If and when we recover deposits from NOTA-Bank, we will record a gain at that time. Other Comprehensive Income (loss) The Company applies the Codification on comprehensive income (loss) that requires disclosure of all components of comprehensive income (loss) on an annual and interim basis. Comprehensive income (loss) is defined as the change in equity of a business enterprise during a period from transactions and other events and circumstances from non-owner sources. The following table presents the changes in accumulated other comprehensive loss for the quarter ended March 31, 2016 . Unrealized gain (loss) on available-for-sale securities Gains and losses on foreign exchange translations Total Beginning balance $ (6,190 ) $ (401,861 ) $ (408,051 ) Other comprehensive income/(loss) before reclassifications 6,722 23,321 30,043 Amounts reclassified from accumulated other comprehensive loss — (29,888 ) (29,888 ) Ending balance $ 532 $ (408,428 ) $ (407,896 ) Accounting for Stock-Based Compensation The 2006 Equity Incentive Plan, as amended, or the Plan, authorizes CBLI to grant (i) options to purchase common stock, (ii) restricted or unrestricted stock units, and (iii) stock appreciation rights, so long as the exercise or grant price of each are at least equal to the fair market value of the stock on the date of grant. As of March 31, 2016 , an aggregate of 650,000 shares of common stock were authorized for issuance under the Plan, of which a total of 184,514 shares of common stock remained available for future awards. A single participant cannot be awarded more than 100,000 shares annually. Awards granted under the Plan have a contractual life of no more than 10 years . The terms and conditions of equity awards (such as price, vesting schedule, term and number of shares) under the Plan are specified in an award document, and approved by the Company’s board of directors, compensation committee or its management delegates. The 2013 Employee Stock Purchase Plan, or ESPP, which provides a means by which eligible employees of the Company and certain designated related corporations may be given an opportunity to purchase shares of common stock. As of March 31, 2016 , there are 325,000 shares of common stock reserved for purchase under the ESPP. The number of shares reserved for purchase under the ESPP increases on January 1 of each calendar year by the lesser of: (i) 10% of the total number of shares of common stock outstanding on December 31st of the preceding year, or (ii) 100,000 shares of common stock. The ESPP allows employees to use up to 15% of their compensation to purchase shares of common stock at an amount equal to 85% of the fair market value of the Company’s common stock on the offering date or the purchase date, whichever is less. The Company utilizes the Black-Scholes valuation model for estimating the fair value of all stock options granted where the vesting period is based on length of service or performance, while a Monte Carlo simulation model is used for estimating the fair value of stock options with market-based vesting conditions. Set forth below are the assumptions used in valuing the stock options granted during the three months ended March 31, 2015 and a discussion of the Company’s methodology for developing each of the assumptions used. No options were granted during the three months ended March 31, 2016 : 2015 Risk-free interest rate 1.43 % Expected dividend yield 0.0 % Expected life 5.5 Years Expected volatility 76.66 % “Risk-free interest rate” means the range of U.S. Treasury rates with a term that most closely resembles the expected life of the option as of the date the option is granted. “Expected dividend yield” means the Company does not pay regular dividends on its common stock and does not anticipate paying any dividends in the foreseeable future. “Expected life” means the period of time that options granted are expected to remain outstanding, based wholly on the use of the simplified (safe harbor) method. The simplified method is used because the Company does not yet have adequate historical exercise information to estimate the expected life the options granted. “Expected volatility” means a measure of the amount by which a financial variable, such as share price, has fluctuated (historical volatility) or is expected to fluctuate (implied volatility) during a period. Expected volatility is based on the Company’s historical volatility and incorporates the volatility of the common stock of comparable companies when the expected life of the option exceeds the Company’s trading history. Income Taxes No income tax expense was recorded for the three months ended March 31, 2016 and 2015 , as the Company does not expect to have taxable income for 2016 and did not have taxable income in 2015 . A full valuation allowance has been recorded against the Company’s deferred tax asset. Additionally, as disclosed in Note 9, Income Taxes, to the Company’s consolidated financial statements included in its Annual Report on Form 10-K for the year ended December 31, 2015 and filed with the SEC on February 23, 2016, the Company had U.S. federal net operating loss carryforwards of approximately $128,665,000 , which begin to expire if not utilized by 2023, and approximately $3,750,000 of federal tax credit carryforwards which begin to expire if not utilized by 2024. The Company also has U.S. state net operating loss carryforwards of approximately $118,097,000 , which begin to expire if not utilized by 2027 and state tax credit carryforwards of approximately $336,000 , which begin to expire if not utilized by 2022. The purchase of 6,459,948 shares of common stock by Mr. Davidovich on July 9, 2015 resulted in Mr. Davidovich owning 60.2% of the Company. We therefore believe it highly likely that this transaction, more fully described in Note 6 Stockholders’ Equity, will be viewed by the U.S. Internal Revenue Service as a change of ownership as defined by Section 382 of the Internal Revenue Code, or Section 382. Consequently, the utilization of these net operating loss and tax credit carryforwards, as well as any additional net operating loss and tax credit carryforwards generated in 2015 through the issuance date, will be limited according to the provisions of Section 382, which will significantly limit the Company’s ability to use these carryforwards to offset taxable income on an annual basis in future periods. As such, a significant portion of these carryforwards will likely expire before they can be utilized, even if the Company is able to generate taxable income that, except for this transaction, would have been sufficient to fully utilize these carryforwards. Earnings (Loss) per Share Basic net income (loss) per share of common stock excludes dilution for potential common stock issuances and is computed by dividing net income (loss) by the weighted average number of shares outstanding for the period. Diluted net income (loss) per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock. Diluted net loss per share is identical to basic net loss per share as potentially dilutive securities have been excluded from the calculation of diluted net loss per common share because the inclusion of such securities would be antidilutive. The Company has excluded the following securities from the calculation of diluted net loss per share because all such securities were antidilutive for the periods presented: As of March 31, Common Equivalent Securities 2016 2015 Convertible preferred — 239,135 Warrants 2,222,155 2,876,020 Options 336,942 261,470 Total 2,559,097 3,376,625 Contingencies From time to time, the Company may have certain contingent liabilities that arise in the ordinary course of business. The Company accrues for liabilities when it is probable that future expenditures will be made and such expenditures can be reasonably estimated. For all periods presented, the Company was not a party to any pending material litigation that was estimable and had a probability of loss. |