XML 49 R32.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Inventories (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2023
Inventory Disclosure [Abstract] |
Schedule of Inventory | The Company’s significant components of inventories at December 31, 2023 and 2022 were as follows (in thousands):
| December 31, |  |  |
| 2023 |  | 2022 |  |  |
Raw materials and parts | $ | 92,563 |  |  | $ | 94,182 |  |  |  |
Work in process | 28,693 |  |  | 27,489 |  |  |  |
Finished goods | 216,570 |  |  | 187,448 |  |  |  |
Total Inventories | 337,826 |  |  | 309,119 |  |  |  |
Less: inventory reserve | (38,187) |  |  | (39,291) |  |  |  |
Inventories, net | $ | 299,639 |  |  | $ | 269,828 |  |  |  |
Schedule of Inventory Reserve | The changes in inventory reserve during the two-year period ended December 31, 2023 were as follows (in thousands):
Period ended | Balance at beginning of period |  | Charged to expense |  | Deductions or other |  | Balance at end of period
December 31, 2022 | $ | 62,885 |  |  | $ | 2,698 |  |  | $ | (26,292) |  |  | $ | 39,291 |
December 31, 2023 | 39,291 |  |  | 2,784 |  |  | (3,888) |  |  | 38,187 |

X
- Definition Schedule of Inventory Reserve [Table Text Block] + References No definition available. + Details
Name: | fet_ScheduleOfInventoryReserveTableTextBlock
Namespace Prefix: | fet_
Data Type: | dtr-types1:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InventoryDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(c)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483489/210-10-50-1 + Details
Name: | us-gaap_ScheduleOfInventoryCurrentTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration