XML 50 R39.htm IDEA: XBRL DOCUMENT
v3.19.2

Business Segments (Reconciliation of Revenue from Segments to Consolidated) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Segment Reporting Information |  |  |  |
Total net sales | $ 200,933 | $ 172,890 | $ 351,402 | $ 295,344
Segment Profit | 16,351 | 12,710 | 25,352 | 16,661
Rail Products and Services |  |  |  |
Segment Reporting Information |  |  |  |
Total net sales | 101,401 | 91,884 | 177,095 | 154,054
Construction Products |  |  |  |
Segment Reporting Information |  |  |  |
Total net sales | 55,406 | 42,207 | 92,751 | 71,107
Tubular and Energy Services |  |  |  |
Segment Reporting Information |  |  |  |
Total net sales | 44,126 | 38,799 | 81,556 | 70,183
Operating Segments |  |  |  |
Segment Reporting Information |  |  |  |
Total net sales | 200,933 | 172,890 | 351,402 | 295,344
Segment Profit | 16,351 | 12,710 | 25,352 | 16,661
Operating Segments | Rail Products and Services |  |  |  |
Segment Reporting Information |  |  |  |
Total net sales | 101,401 | 91,884 | 177,095 | 154,054
Segment Profit | 7,919 | 5,308 | 11,398 | 7,356
Operating Segments | Construction Products |  |  |  |
Segment Reporting Information |  |  |  |
Total net sales | 55,406 | 42,207 | 92,751 | 71,107
Segment Profit | 3,413 | 2,857 | 4,247 | 2,875
Operating Segments | Tubular and Energy Services |  |  |  |
Segment Reporting Information |  |  |  |
Total net sales | 44,126 | 38,799 | 81,556 | 70,183
Segment Profit | $ 5,019 | $ 4,545 | $ 9,707 | $ 6,430

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 Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045 + Details
Name: | us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax
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: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |