Annual Rent

No definition available.

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Namespace Prefix:	fet_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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

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+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount of lease payments to be received by lessor for operating lease.

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Balance Type:	debit
Period Type:	instant

- Definition

Term of lessor's sales-type lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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Balance Type:	na
Period Type:	instant

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's right to use underlying asset under operating lease.

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Period Type:	instant

- Definition

Amount of cash inflow from principal payment received from sales-type and direct financing leases classified as investing activity.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The net book value of the asset(s) sold in connection with the sale of the property to another party and lease back to the seller.

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Period Type:	instant

- Details

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Period Type:

- Details

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Leases (Details) - USD ($) $ in Thousands	1 Months Ended		9 Months Ended
Leases (Details) - USD ($) $ in Thousands	Aug. 31, 2025	Jun. 30, 2025	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Lessee, Lease, Description [Line Items]
Proceeds from sale-leaseback transactions			$ 14,574	$ 0
Operating lease asset			$ 81,268		$ 70,389
Sale Leaseback Transaction
Lessee, Lease, Description [Line Items]
Proceeds from sale-leaseback transactions	$ 6,500	$ 8,800
Net proceeds receivable		800
Annual rent	$ 600	$ 700
Initial term	18 years	15 years
Operating lease, liability	$ 7,200	$ 7,600
Operating lease asset	7,200	7,600
Land and Buildings \| Sale Leaseback Transaction
Lessee, Lease, Description [Line Items]
Sale leaseback transaction	$ 2,300	$ 1,900