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Selected Balance Sheet Information | 9 Months Ended
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Sep. 30, 2021
Selected Balance Sheet Information |
Selected Balance Sheet Information | 3. Selected Balance Sheet Information Prepaid expenses and other current assets (in thousands) ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | December 31,
​ |  | 2021 |  | 2020
Prepaid clinical research organizations | ​ | $ | 1,182 | ​ | $ | 470
Prepaid consulting, subscriptions and other expenses | ​ | ​ | 157 | ​ | ​ | 90
Prepaid insurances | ​ | ​ | 83 | ​ | ​ | 639
Stock sales receivable | ​ |  | - | ​ |  | 469
Prepaid manufacturing expenses | ​ |  | - | ​ |  | 39
​ | ​ | ​ | ​ | ​ | ​ | ​
Total | ​ | $ | 1,422 | ​ | $ | 1,707
​ Prepaid clinical research organizations (“CROs”) expense is classified as a current asset. The Company makes payments to the CROs based on agreed upon terms that include payments in advance of study services. ​ Property and equipment, net (in thousands) ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | September 30, | ​ | December 31,
​ | ​ | 2021 |  | 2020
Computers and office equipment | ​ | $ | 827 | ​ | $ | 813
Leasehold improvements | ​ |  | 94 | ​ |  | 439
Software | ​ |  | 11 | ​ |  | 11
​ | ​ |  | 932 | ​ |  | 1,263
Less: accumulated depreciation and amortization | ​ |  | (817) | ​ |  | (1,089)
​ | ​ | ​ | ​ | ​ | ​ | ​
Total | ​ | $ | 115 | ​ | $ | 174
​ Accrued expenses (in thousands) ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | September 30, | ​ | December 31,
​ | ​ | 2021 |  | 2020
Accrued clinical consulting services | ​ | $ | 756 | ​ | $ | 700
Accrued vendor payments | ​ |  | 253 | ​ |  | 225
​ | ​ | ​ | ​ | ​ | ​ | ​
Total | ​ | $ | 1,009 | ​ | $ | 925
​ Accrued employee benefits (in thousands) ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | September 30, | ​ | December 31,
​ | ​ | 2021 |  | 2020
Accrued bonus expense | ​ | $ | 543 | ​ | $ | 724
Accrued vacation expense | ​ |  | 178 | ​ |  | 144
​ | ​ | ​ | ​ | ​ | ​ | ​
Total | ​ | $ | 721 | ​ | $ | 868
​

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- 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
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