Income Taxes - Additional Information (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2022 |
Sep. 30, 2021 |
Sep. 30, 2022 |
Sep. 30, 2021 |
|
| Income Tax Disclosure [Abstract] | ||||
| Income tax expense | $ 87 | $ 729 | $ 167 | $ 807 |
| Effective tax rate | 0.00% | 0.00% | ||
| Income tax expense or benefits, uncertain tax positions | $ 0 | |||
| Deferred tax liability, exchange of Class B common stock and Fathom Opco units | $ 12,219 | $ 17,700 | ||
| X | ||||||||||
- Definition Deferred tax liability adjustments to additional paid in capital tax impact of exchange of common stock and fathom opco units. No definition available.
|
| X | ||||||||||
- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of expense for penalties related to a tax position claimed or expected to be claimed in the tax return. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|