XML 26 R15.htm IDEA: XBRL DOCUMENT
v3.21.2

Fair Value Measurements | 9 Months Ended
--- | ---
Sep. 30, 2021
Fair Value Measurements |
Fair Value Measurements | Note 8. Fair Value Measurements FASB ASC Section 820, Fair Value Measurements and Disclosures establishes a three-level hierarchy for fair value measurements which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The three levels of inputs that may be used to measure fair value are as follows: Level 1: Quoted prices (unadjusted) or identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date; Level 2: Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data; and Level 3: Significant unobservable inputs that reflect a reporting entity’s own assumptions that market participants would use in pricing an asset or liability. Cash and cash equivalents, other current assets, accounts payable and other accrued liabilities are reflected in the condensed consolidated balance sheet at their approximate estimated fair values primarily due to their short-term nature. The fair values of securities available for sale is determined by relying on the securities’ relationship to other benchmark quoted securities and classified its investments as Level 2 items in both 2021 and 2020. There were no transfers of assets or liabilities between Level 1 and Level 2 and no transfers in or out of Level 3 during the nine-months ended September 30, 2021 or during the year ended December 31, 2020. The changes in Level 3 liabilities were the result of changes in the fair value of the earn-out milestone liability included in earnings and in-process R&D. The earnout milestone liability is valued using a risk-adjusted assessment of the probability of payment of each milestone, discounted to present value using an estimated time to achieve the milestone (see Note 14). Assets and liabilities measured at fair value are summarized below: Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
|  | Total Fair Value |  |  | Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Recurring items as of September 30, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment in debt securities - available for sale, at fair value |  | $ | 28,864,364 |  |  | $ | – |  |  | $ | 28,864,364 |  |  | $ | – |
Non-recurring items as of September 30, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
In-process R&D (Note 9) |  | $ | 13,366,234 |  |  | $ | – |  |  | $ | – |  |  | $ | 13,366,234 |
Non-recurring items as of December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
In-process R&D (Note 9) |  | $ | 13,366,234 |  |  | $ | – |  |  | $ | – |  |  | $ | 13,366,234 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Recurring items as of September 30, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earn-out milestone liability (Note 14) |  | $ | 7,345,000 |  |  | $ | – |  |  | $ | – |  |  | $ | 7,345,000 |
Recurring items as of December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earn-out milestone liability (Note 14) |  | $ | 7,018,000 |  |  | $ | – |  |  | $ | – |  |  | $ | 7,018,000 |

X
- References No definition available. + Details
Name: | CLSN_DisclosureFairValueMeasurementsAbstract
Namespace Prefix: | CLSN_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for derivatives and fair value of assets and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -URI http://asc.fasb.org/topic&trid=2155941 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -URI http://asc.fasb.org/topic&trid=2229140 + Details
Name: | us-gaap_DerivativesAndFairValueTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration