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Lease Obligations (Details Textual) | 3 Months Ended | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Jul. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) ft² | Jun. 30, 2021 ft² | Feb. 29, 2020 ft² | Feb. 28, 2015 ft²
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |
Operating lease assets, net | $ 11,380,000 |  | $ 11,380,000 |  |  | $ 6,806,000 |  |  |
Operating lease, liability | 12,248,000 |  | 12,248,000 |  |  | 8,173,000 |  |  |
Operating lease, right-of-use asset, accumulated amortization | 6,350,000 |  | 6,350,000 |  |  | $ 4,349,000 |  |  |
Operating lease, payments | $ 834,000 | $ 615,000 | $ 2,293,000 | $ 1,796,000 |  |  |  |  |
NORTH CAROLINA | Durham Office Space |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |
Area of real estate | ft² |  |  |  |  |  |  | 19,978 |  |
Operating lease assets, net |  |  |  |  | $ 2,063 |  |  |  |
Operating lease, liability |  |  |  |  | 2,063 |  |  |  |
ALABAMA | Birmingham Office Space |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |
Area of real estate | ft² |  |  |  |  |  | 14,607 |  | 2,846 | 31,601
Operating lease assets, net |  |  |  |  | 5,327 |  |  |  |
Operating lease, liability |  |  |  |  | $ 5,925 |  |  |  |
Tenant improvement allowance |  |  |  |  |  | $ 515 |  |  |
Minimum |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |
Lessee, operating lease, term of contract (in years) | 1 year |  | 1 year |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |  |  |
Lessee, operating lease, term of contract (in years) | 3 years |  | 3 years |  |  |  |  |  |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
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