Commitments and Contingent Liabilites (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	156 Months Ended							6 Months Ended		12 Months Ended	156 Months Ended
	Dec. 31, 2011 item	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Reserve for Concrete Ties [Member]	Dec. 31, 2013 Reserve for Concrete Ties [Member]	Jun. 30, 2014 Reserve for Environmental Costs [Member]	Dec. 31, 2013 Reserve for Environmental Costs [Member]	Jun. 30, 2014 Transit Products [Member]	Jun. 30, 2014 The UPRR [Member] item	Dec. 31, 2012 The UPRR [Member]	Dec. 31, 2011 The UPRR [Member] item
Product Liability Contingency [Line Items]
Concrete Ties Manufactured	3,000,000										1,600,000
Number of Concrete Ties Excluded from Warranty									170,000
Product Warranty Expense								$ 608	$ 4,000	$ 22,000
Standard Product Warranty Accrual		9,594	7,483	8,537	6,462
Estimated Litigation Liability						$ 2,163	$ 2,190