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Commitment and Contingencies (Tables) | 6 Months Ended
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Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract] |
Schedule of future minimum rental payments under company's noncancelable operating leases | As of June 30, 2021, future minimum annual lease payments under the Company’s operating lease liabilities for the SSF Lease and Ann Arbor Leases were as follows:
Year Ending |  | Total Commitment |
2021 (excluding the six months ended June 30, 2021) |  | $ | 786 |
2022 |  |  | 1,603 |
2023 |  |  | 1,647 |
2024 |  |  | 443 |
2025 |  |  | — |
Total minimum lease payments |  |  | 4,479 |
Less: imputed interest |  |  | (321 | )
Present value of operating lease obligations |  |  | 4,158 |
Less: current portion |  |  | (1,484 | )
Noncurrent operating lease obligations |  | $ | 2,674 |

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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 + Details
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