XML 24 R13.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Supplementary Balance Sheet Information | 12 Months Ended
--- | ---
Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Supplementary Balance Sheet Information | Supplementary Balance Sheet Information Short-term investments available-for-sale securities consist of the following:
| As of December 31, 2021
(in thousands) | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Market Value
Maturity less than 1 year: |  |  |  |  |  |  |
Certificate of deposit | $ | 1,260 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,260 |
Corporate debt securities | 58,822 |  |  | 2 |  |  | (38) |  |  | 58,786 |
Commercial paper | 14,453 |  |  | 4 |  |  | (3) |  |  | 14,454 |
Non U.S. government | 728 |  |  | — |  |  | — |  |  | 728 |
U.S. treasury securities | 20,380 |  |  | — |  |  | (24) |  |  | 20,356 |
Total maturity less than 1 year | 95,643 |  |  | 6 |  |  | (65) |  |  | 95,584 |
Maturity 1 to 2 years: |  |  |  |  |  |  |
Corporate debt securities | 29,676 |  |  | 1 |  |  | (73) |  |  | 29,604 |
U.S. treasury securities | 3,701 |  |  | — |  |  | (11) |  |  | 3,690 |
Total maturity 1 to 2 years | 33,377 |  |  | 1 |  |  | (84) |  |  | 33,294 |
Total short-term investments | $ | 129,020 |  |  | $ | 7 |  |  | $ | (149) |  |  | $ | 128,878 |
For the year ending December 31, 2021 the realized loss on the sale of short-term investments was $0. The Company did not have short-term investments during the year ending December 31, 2020. None of the Company’s short-term investments available for sale were in a material unrealized loss position at December 31, 2021. The Company reviewed its investment holdings as of December 31, 2021 and determined that its unrealized losses were not considered to be other-than-temporary based upon (i) the financial strength of the issuing institution and (ii) the fact that no securities have been in an unrealized loss position for twelve months or more. As such, the Company has not recognized any impairment in its financial statements related to its available-for-sale investment securities. Property and Equipment Fixed assets consist of furniture and office equipment, leasehold improvements and laboratory equipment. Depreciation expense for property and equipment for the years ended December 31, 2021 and 2020 was $0.5 million and $0.5 million, respectively. Property and equipment consisted of the following:
| As of December 31,
(in thousands) | 2021 |  | 2020
Furniture and office equipment | $ | 955 |  |  | $ | 798 |
Leasehold improvements | 1,962 |  |  | 1,962 |
Laboratory equipment | 906 |  |  | 868 |
| 3,823 |  |  | 3,628 |
Less—accumulated depreciation | (3,441) |  |  | (3,004) |
Property and equipment, net | $ | 382 |  |  | $ | 624 |
Accrued Liabilities Accrued liabilities consisted of the following:
| As of December 31,
(in thousands) | 2021 |  | 2020
Accrued compensation | $ | 1,435 |  |  | $ | 1,523 |
Preferred stock dividend | 414 |  |  | 390 |
Clinical trials | 1,639 |  |  | 1,557 |
Research agreements and services | 726 |  |  | 67 |
Director fees | 141 |  |  | 93 |
Professional fees and outside services | 63 |  |  | 38 |
Patent, license and other fees | 43 |  |  | 117 |
Other accrued liabilities | 66 |  |  | 66 |
Total accrued liabilities | $ | 4,527 |  |  | $ | 3,851 |

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

X
- Definition The entire disclosure for supplemental balance sheet disclosures, including descriptions and amounts for assets, liabilities, and equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI http://asc.fasb.org/topic&trid=2122208 + Details
Name: | us-gaap_SupplementalBalanceSheetDisclosuresTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration