XML 19 R67.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Commitments and Contingent Liabilites (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 9 Months Ended |
--- | --- | ---
Sep. 30, 2013 property | Dec. 31, 2012
Product Liability Contingency [Line Items] |  |
Standard Product Warranty Accrual | $ 7,761 | $ 15,727
Reserve for Concrete Ties [Member] |  |
Product Liability Contingency [Line Items] |  |
Standard Product Warranty Accrual | 6,940 | 14,837
Change in Estimate of Defective Product Requiring Replacement | 0 |
Reserve for Environmental Costs [Member] |  |
Product Liability Contingency [Line Items] |  |
Estimated Litigation Liability | $ 2,092 | $ 2,141
Loss Contingency, Request for Information | On January 11, 2012, CXT received a subpoena from the United States Department of Transportation Inspector General (IG) requesting records related to its manufacture of concrete railroad ties in Grand Island, NE. CXT and the Company have been cooperating fully with the IG. |

X
- Definition The change in estimate of defective product requiring replacement. + References No definition available. + Details
Name: | fstr_ChangeInEstimateOfDefectiveProductRequiringReplacement
Namespace Prefix: | fstr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate carrying amount of the estimated litigation liability for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 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 210.5-02.25) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LitigationReserve
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Describes the type of information that the parties to the litigation have sought or provided, and when it was provided. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 + Details
Name: | us-gaap_LossContingencyRequestForInformation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Amount as of the balance sheet date of the aggregate standard product warranty liability. Does not include the balance for the extended product warranty liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (c)(1),(c)(5) -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
Name: | us-gaap_StandardProductWarrantyAccrual
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant