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Restatement of Previously Reported Unaudited Interim Consolidated Financial Statements (Unaudited) - Consolidated Statements of Cash Flows (Details) - USD ($) |  | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Jul. 29, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2021 | Jun. 30, 2022 | Sep. 30, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Cash Flows From Operating Activities: |  |  |  |  |  |  |  |  |
Net loss |  | $ (4,490,000) | $ (4,477,000) |  | $ (8,750,000) | $ (13,240,000) | $ (19,685,000) | $ (14,268,000) |
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  | 225,000 | 346,000 | 475,000 | 416,000 |
Income tax benefit |  | (335,000) | (532,000) |  | (532,000) | (867,000) | (1,425,000) | 0 |
Change in fair value of contingent consideration |  |  |  |  | (442,000) | (244,000) | 2,091,000 | 0 |
Depreciation |  |  |  |  | 36,000 | 60,000 | 85,000 | 87,000 |
Changes in operating assets and liabilities: |  |  |  |  |  |  |  |  |
Prepaid expenses and other current assets |  |  |  |  | 518,000 | 780,000 | (363,000) | 174,000 |
Right of use asset |  |  |  |  | 90,000 | 137,000 | 183,000 | 166,000 |
Accounts payable |  |  |  |  | (295,000) | (504,000) | (385,000) | (363,000) |
Accrued expenses |  |  |  |  | 265,000 | (326,000) | (267,000) | 1,004,000 |
Accrued employee benefits |  |  |  |  | (272,000) | 271,000 | 333,000 | 110,000 |
Lease liability |  |  |  |  | (101,000) | (127,000) | (124,000) | (216,000) |
Net Cash Used In Operating Activities |  |  |  |  | (9,258,000) | (13,714,000) | (19,082,000) | (12,890,000) |
Cash Flows From Investing Activities: |  |  |  |  |  |  |  |  |
Purchases of property and equipment |  |  |  |  | (14,000) | (25,000) | (116,000) | (14,000) |
Cash paid for business combination; net of cash acquired |  |  |  |  | (3,863,000) | (3,863,000) | (3,863,000) | 0 |
Pre-acquisition loan to VCN |  |  |  |  | (417,000) | (417,000) | (417,000) | 0 |
Net Cash Used In Investing Activities |  |  |  |  | (4,294,000) | (4,305,000) | (4,396,000) | (14,000) |
Cash Flows From Financing Activities: |  |  |  |  |  |  |  |  |
Payment of debt |  |  |  |  | (1,376,000) |  | (1,376,000) | 0 |
Proceeds from sale of series preferred stock, net of issuance cost | $ 3,000,000.0 |  |  |  |  |  |  |  |
Proceeds from "at-the-market" stock issuance |  |  |  |  |  |  | 0 | 65,960,000 |
Proceeds from issuance of common stock for warrant exercises |  |  |  | $ 8,000,000.0 |  |  | 0 | 8,042,000 |
Net Cash (used in) Provided By Financing Activities |  |  |  |  | (1,376,000) | 1,358,000 | (1,930,000) | 74,002,000 |
Effects of FX on cash |  |  |  |  | (35,000) | (84,000) | (32,000) | 0 |
Net (decrease) increase in cash and cash equivalents and restricted cash |  |  |  |  | (14,963,000) | (16,661,000) | (25,408,000) | 61,098,000 |
Cash and cash equivalents and restricted at the beginning of this period |  | 52,362,000 |  | $ 6,227,000 | 67,325,000 | 67,325,000 | 67,325,000 | 6,227,000 |
Cash and cash equivalents and restricted cash at the end of this period |  | 50,580,000 | 52,362,000 |  | 52,362,000 | 50,580,000 | 41,885,000 | 67,325,000 | $ 6,227,000
Reconciliation of cash, cash equivalents, and restricted cash reported in the statement of financial position |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | 50,490,000 | 52,266,000 |  | 52,266,000 | 50,490,000 | 41,786,000 | 67,325,000 |
Restricted cash included in other long-term assets |  | 90,000 | 96,000 |  | 96,000 | 90,000 | 99,000 | 0 |
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows |  | 50,580,000 | 52,362,000 |  | 52,362,000 | 50,580,000 | 41,885,000 | 67,325,000 | 6,227,000
Supplemental non-cash investing and financing activities: |  |  |  |  |  |  |  |  |
Fair value of contingent consideration issued in a business combination |  |  |  |  | 12,158,000 | 12,158,000 | 10,093,000 | 0 |
Fair value of equity issued as consideration in a business combination |  |  |  |  | 6,599,000 | 6,599,000 | 6,599,000 | 0 |
Effective settlement of pre-closing VCN financing |  |  |  |  | 417,000 | 417,000 | 417,000 | 0 |
Goodwill measurement period adjustment |  |  |  |  | 277,000 | (884,000) | (1,061,000) | 0 |
In-process R&D measurement period adjustment |  |  |  |  |  | 810,000 | 810,000 | 0 |
Deferred tax liability measurement period adjustment |  |  |  |  |  | 202,000 | 202,000 | 0 |
Effect of Warrant exercise price adjustment |  |  |  |  |  | 340,000 | 340,000 | 0 | $ 900,000
Effect of Series A Preferred Stock price adjustment |  |  |  |  |  |  | 0 | 7,402,000 |
Return of SYN Biomics Stock |  |  |  |  |  |  | 0 | 2,774,000 |
Deemed dividends for accretion of Series B Preferred Stock discount |  |  |  |  |  |  | 0 | 1,496,000 |
Right of use assets from operating lease |  |  |  |  |  |  | 0 | 1,270,000 |
In-kind dividends in preferred stock |  |  |  |  |  |  | 0 | 24,000 |
Series B Preferred Stock |  |  |  |  |  |  |  |  |
Supplemental non-cash investing and financing activities: |  |  |  |  |  |  |  |  |
Conversion of Preferred Stock |  |  |  |  |  |  | 0 | 2,477,000 |
Series C Preferred Stock |  |  |  |  |  |  |  |  |
Cash Flows From Financing Activities: |  |  |  |  |  |  |  |  |
Payment of debt |  |  |  |  |  | (1,376,000) |  |  |
Proceeds from sale of series preferred stock, net of issuance cost |  |  |  |  |  | 2,006,000 | 2,006,000 | 0 |
Series D Preferred Stock |  |  |  |  |  |  |  |  |
Cash Flows From Financing Activities: |  |  |  |  |  |  |  |  |
Proceeds from sale of series preferred stock, net of issuance cost |  |  |  |  |  | 728,000 | 728,000 | 0 |
Series A Preferred Stock |  |  |  |  |  |  |  |  |
Supplemental non-cash investing and financing activities: |  |  |  |  |  |  |  |  |
Conversion of Preferred Stock |  |  |  |  |  |  | 0 | 12,822,000 |
Effect of Series A Preferred Stock price adjustment |  |  |  |  |  |  |  | 7,402,000 |
As Previously Reported |  |  |  |  |  |  |  |  |
Cash Flows From Operating Activities: |  |  |  |  |  |  |  |  |
Net loss |  | (4,853,000) | (4,968,000) |  | (9,241,000) | (14,094,000) |  |  |
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  | 225,000 | 346,000 |  |  |
Change in fair value of contingent consideration |  |  |  |  | (483,000) | (257,000) |  |  |
Depreciation |  |  |  |  | 36,000 | 60,000 |  |  |
Changes in operating assets and liabilities: |  |  |  |  |  |  |  |  |
Prepaid expenses and other current assets |  |  |  |  | 518,000 | 780,000 |  |  |
Right of use asset |  |  |  |  | 90,000 | 137,000 |  |  |
Accounts payable |  |  |  |  | (295,000) | (504,000) |  |  |
Accrued expenses |  |  |  |  | 265,000 | (326,000) |  |  |
Accrued employee benefits |  |  |  |  | (272,000) | 271,000 |  |  |
Lease liability |  |  |  |  | (101,000) | (127,000) |  |  |
Net Cash Used In Operating Activities |  |  |  |  | (9,258,000) | (13,714,000) |  |  |
Cash Flows From Investing Activities: |  |  |  |  |  |  |  |  |
Purchases of property and equipment |  |  |  |  | (14,000) | (25,000) |  |  |
Cash paid for business combination; net of cash acquired |  |  |  |  | (3,863,000) | (3,863,000) |  |  |
Pre-acquisition loan to VCN |  |  |  |  | (417,000) | (417,000) |  |  |
Net Cash Used In Investing Activities |  |  |  |  | (4,294,000) | (4,305,000) |  |  |
Cash Flows From Financing Activities: |  |  |  |  |  |  |  |  |
Payment of debt |  |  |  |  | (1,376,000) |  |  |  |
Net Cash (used in) Provided By Financing Activities |  |  |  |  | (1,376,000) | 1,358,000 |  |  |
Effects of FX on cash |  |  |  |  | (35,000) | (84,000) |  |  |
Net (decrease) increase in cash and cash equivalents and restricted cash |  |  |  |  | (14,963,000) | (16,661,000) |  |  |
Cash and cash equivalents and restricted at the beginning of this period |  | 52,362,000 |  |  | 67,325,000 | 67,325,000 | $ 67,325,000 |  |
Cash and cash equivalents and restricted cash at the end of this period |  | 50,580,000 | 52,362,000 |  | 52,362,000 | 50,580,000 |  | 67,325,000 |
Reconciliation of cash, cash equivalents, and restricted cash reported in the statement of financial position |  |  |  |  |  |  |  |  |
Cash and cash equivalents |  | 50,490,000 | 52,266,000 |  | 52,266,000 | 50,490,000 |  |  |
Restricted cash included in other long-term assets |  | 90,000 | 96,000 |  | 96,000 | 90,000 |  |  |
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows |  | 50,580,000 | 52,362,000 |  | 52,362,000 | 50,580,000 |  | $ 67,325,000 |
Supplemental non-cash investing and financing activities: |  |  |  |  |  |  |  |  |
Fair value of contingent consideration issued in a business combination |  |  |  |  | 12,158,000 | 12,158,000 |  |  |
Fair value of equity issued as consideration in a business combination |  |  |  |  | 6,599,000 | 6,599,000 |  |  |
Effective settlement of pre-closing VCN financing |  |  |  |  | 417,000 | 417,000 |  |  |
Goodwill measurement period adjustment |  |  |  |  | 277,000 | (884,000) |  |  |
In-process R&D measurement period adjustment |  |  |  |  |  | 810,000 |  |  |
Deferred tax liability measurement period adjustment |  |  |  |  |  | 202,000 |  |  |
Effect of Warrant exercise price adjustment |  |  |  |  |  | 340,000 |  |  |
As Previously Reported | Series C Preferred Stock |  |  |  |  |  |  |  |  |
Cash Flows From Financing Activities: |  |  |  |  |  |  |  |  |
Payment of debt |  |  |  |  |  | (1,376,000) |  |  |
Proceeds from sale of series preferred stock, net of issuance cost |  |  |  |  |  | 2,006,000 |  |  |
As Previously Reported | Series D Preferred Stock |  |  |  |  |  |  |  |  |
Cash Flows From Financing Activities: |  |  |  |  |  |  |  |  |
Proceeds from sale of series preferred stock, net of issuance cost |  |  |  |  |  | 728,000 |  |  |
Restatement Adjustments |  |  |  |  |  |  |  |  |
Cash Flows From Operating Activities: |  |  |  |  |  |  |  |  |
Net loss |  | 335,000 | 532,000 |  | 532,000 | 867,000 |  |  |
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |  |  |  |  |  |  |
Income tax benefit |  | (335,000) | (532,000) |  | (532,000) | (867,000) |  |  |
Other Immaterial Adjustments |  |  |  |  |  |  |  |  |
Cash Flows From Operating Activities: |  |  |  |  |  |  |  |  |
Net loss |  | $ 28,000 | $ (41,000) |  | (41,000) | (13,000) |  |  |
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |  |  |  |  |  |  |
Change in fair value of contingent consideration |  |  |  |  | $ 41,000 | $ 13,000 |  |  |

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