XML 47 R36.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Business Segments (Reconciliation of Revenue from Segments to Consolidated) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | $ 144,860 | $ 135,994 | $ 263,562 | $ 262,304
Segment Profit (Loss) | 8,511 | (124,207) | 10,711 | (124,945)
Rail Products and Services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 69,347 | 67,503 | 125,827 | 131,795
Segment Profit (Loss) | 3,977 | (25,168) | 5,466 | (24,427)
Construction Products |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 45,465 | 40,348 | 82,787 | 72,228
Segment Profit (Loss) | 4,551 | 3,944 | 5,770 | 4,392
Tubular and Energy Services |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 30,048 | 28,143 | 54,948 | 58,281
Segment Profit (Loss) | $ (17) | $ (102,983) | $ (525) | $ (104,910)

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_SalesRevenueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fstr_RailProductsSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fstr_ConstructionProductsSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=fstr_TubularProductsSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |