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Commitments and Contingent Liabilites (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended |
--- | --- | ---
Jun. 30, 2013 | Dec. 31, 2012
Product Liability Contingency [Line Items] |  |
Standard Product Warranty Accrual | $ 11,815 | $ 15,727
Reserve for Concrete Ties [Member] |  |
Product Liability Contingency [Line Items] |  |
Standard Product Warranty Accrual | 11,021 | 14,837
Reserve for Environmental Costs [Member] |  |
Product Liability Contingency [Line Items] |  |
Estimated Litigation Liability | $ 2,133 | $ 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. |

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- 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
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- 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
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- 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
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