XML 39 R22.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Employee Benefits | 12 Months Ended
--- | ---
Dec. 31, 2023
Stockholders' Equity and Employee Benefit Plans Disclosure [Abstract] |
Employee Benefits | Employee Benefits We sponsor a 401(k) savings plan for U.S. employees and similar savings plans for certain non-U.S. employees. These plans benefit eligible employees by allowing them the opportunity to make contributions up to certain limits. We contribute by matching a percentage of each employee’s contributions. Subsequent to the closing of all acquisitions, employees of those acquired entities will generally be eligible to participate in the Company’s 401(k) savings plan. We also have the discretion to provide a profit sharing contribution to each participant depending on the Company’s performance for the applicable year. The expense under the Company’s retirement plan was $4.4 million and $3.4 million for the years ended December 31, 2023 and 2022, respectively.

X
- Definition Stockholders' Equity and Employee Benefit Plans Disclosure [Abstract] + References No definition available. + Details
Name: | fet_StockholdersEquityAndEmployeeBenefitPlansDisclosureAbstract
Namespace Prefix: | fet_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Stockholders' Equity and Employee Benefit Plans Disclosure [Text Block] + References No definition available. + Details
Name: | fet_StockholdersEquityAndEmployeeBenefitPlansDisclosureTextBlock
Namespace Prefix: | fet_
Data Type: | dtr-types1:textBlockItemType
Balance Type: | na
Period Type: | duration