Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Goodwill, Impairment Loss	$ 80,337	$ 0	$ 80,337	$ 0
Goodwill, Impairment Loss, Net of Tax			63,887
Finite-Lived Intangible Assets, Gross	160,080		160,080		$ 95,771
Amortization of Intangible Assets	3,337	$ 1,191	$ 8,950	$ 3,504
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life			25 years
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life			5 years
Weighted Average [Member]
Finite-Lived Intangible Asset, Useful Life			15 years
Rail Products and Services [Member]
Goodwill, Impairment Loss			$ 0
Finite-Lived Intangible Assets, Gross	58,736		58,736		44,781
Construction Products [Member]
Goodwill, Impairment Loss			0
Finite-Lived Intangible Assets, Gross	3,178		3,178		3,178
Tubular and Energy Services [Member]
Goodwill, Impairment Loss			80,337
Finite-Lived Intangible Assets, Gross	$ 98,166		98,166		$ 47,812
Inspection Oilfield Services (IOS) [Member]
Goodwill, Impairment Loss			69,908
Impairment of Long-Lived Assets Held-for-use			0
Impairment of Intangible Assets, Finite-lived			0
Chemtec Energy Services, LLC [Member]
Goodwill, Impairment Loss			10,429
Impairment of Long-Lived Assets Held-for-use			0
Impairment of Intangible Assets, Finite-lived			$ 0