XML 12 R48.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Property and equipment (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Property, Plant and Equipment, Net [Abstract] |  |  |
Property & equipment, excluding rental equipment, gross | $ 235,128 | $ 197,174 |
Less: accumulated depreciation, excluding rental equipment | (88,526) | (79,343) |
Property & equipment, excluding rental equipment, net | 146,602 | 117,831 |
Property & equipment, net | 180,292 | 152,983 |
Depreciation expense | 36,166 | 31,458 | 26,245
Minimum [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Estimated useful life, property and equipment | 3 years |  |
Maximum [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Estimated useful life, property and equipment | 20 years |  |
Land [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Property & equipment, excluding rental equipment, gross | 6,718 | 3,926 |
Buildings and leasehold improvements [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Property & equipment, excluding rental equipment, gross | 53,025 | 47,390 |
Buildings and leasehold improvements [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Estimated useful life, property and equipment | 7 years |  |
Buildings and leasehold improvements [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Estimated useful life, property and equipment | 20 years |  |
Computer equipment [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Property & equipment, excluding rental equipment, gross | 29,374 | 14,227 |
Computer equipment [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Estimated useful life, property and equipment | 3 years |  |
Computer equipment [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Estimated useful life, property and equipment | 5 years |  |
Machinery & equipment [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Property & equipment, excluding rental equipment, gross | 102,937 | 94,198 |
Machinery & equipment [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Estimated useful life, property and equipment | 5 years |  |
Machinery & equipment [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Estimated useful life, property and equipment | 10 years |  |
Furniture & fixtures [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Property & equipment, excluding rental equipment, gross | 6,625 | 12,678 |
Furniture & fixtures [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Estimated useful life, property and equipment | 3 years |  |
Furniture & fixtures [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Estimated useful life, property and equipment | 10 years |  |
Vehicles [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Property & equipment, excluding rental equipment, gross | 11,247 | 11,328 |
Vehicles [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Estimated useful life, property and equipment | 3 years |  |
Vehicles [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Estimated useful life, property and equipment | 5 years |  |
Construction in progress [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Property & equipment, excluding rental equipment, gross | 25,202 | 13,427 |
Rental equipment [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Property & equipment, gross | 110,455 | 105,162 |
Less: accumulated depreciation | (76,765) | (70,010) |
Property & equipment, net | $ 33,690 | $ 35,152 |
Rental equipment [Member] | Minimum [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Estimated useful life, property and equipment | 3 years |  |
Rental equipment [Member] | Maximum [Member] |  |  |
Property, Plant and Equipment, Net [Abstract] |  |  |
Estimated useful life, property and equipment | 10 years |  |

X
- Definition Accumulated Depreciation, Depletion and Amortization Property, Plant and Equipment Excluding Rental Equipment + References No definition available. + Details
Name: | fet_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipmentExcludingRentalEquipment
Namespace Prefix: | fet_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Property, Plant, and Equipment Excluding Rental Equipment, Gross + References No definition available. + Details
Name: | fet_PropertyPlantAndEquipmentExcludingRentalEquipmentGross
Namespace Prefix: | fet_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Property, Plant and Equipment, Excluding Rental Equipment, Net + References No definition available. + Details
Name: | fet_PropertyPlantAndEquipmentExcludingRentalEquipmentNet
Namespace Prefix: | fet_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 14 -Article 5 + Details
Name: | us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
Name: | us-gaap_Depreciation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_PropertyPlantAndEquipmentGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 + Details
Name: | us-gaap_PropertyPlantAndEquipmentNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentNetAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration