XML 76 R60.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Segment Information (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2017 USD ($) segment ft | Sep. 30, 2016 USD ($)
Segment Reporting Information [Line Items] |  |  |  |
Number of reportable segments | segment |  |  | 4 |
Investigation-related matters | $ | $ 2,503 | $ 1,779 | $ 5,109 | $ 5,054
Maximum | Tubular Sales |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Length of tubulars used as caissons or pilings (in feet) (up to) | ft |  |  | 300 |

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- Definition Investigation-Related Matters Expense + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

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- Definition Length of Tubulars used as Caissons and Pilings + References No definition available. + Details
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Namespace Prefix: | fi_
Data Type: | num:lengthItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
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Period Type: | duration

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- 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 No definition available. + Details
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Namespace Prefix: | us-gaap_
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- Details
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Namespace Prefix: |
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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fi_TubularSalesSegmentMember
Namespace Prefix: |
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Balance Type: |
Period Type: |