Percentage of voting equity interests acquired at the acquisition date in the business combination.

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-Name Accounting Standards Codification
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In a business combination achieved in stages, this element represents the amount of gain recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination.

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee.

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Amount of gain (loss) on sale or disposal of intangible assets.

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Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

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Amount of income related to nonoperating activities, classified as other.

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Amount of income (expense) related to nonoperating activities, classified as other.

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The cash inflow from the sale of formerly productive land held for sale, anything permanently fixed to it, including buildings, structures on it, and so forth.

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Other Income (Details) - USD ($) $ in Thousands				3 Months Ended	12 Months Ended
Other Income (Details) - USD ($) $ in Thousands	Aug. 07, 2017	Dec. 23, 2015	Nov. 23, 2015	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Gain on Rail Segment patent sale					$ (500)	$ 0	$ 0
Foreign currency losses (gains)					804	12	(1,616)
Remeasurement gain on equity method investment					0	0	(580)
Legal settlement gain				$ (460)	0	0	(460)
Other					(184)	(1,535)	(650)
Other income					(367)	(1,523)	(5,585)
TEW Plus LTD
Remeasurement gain on equity method investment			$ (580)
Percentage of voting interests acquired			75.00%
Asset Sale \| Protective Coating Field Service
(Gain) loss on sale of asset					(487)	0	0
Proceeds from sales of asset	$ 1,200
Asset Sale \| Tucson Arizona
(Gain) loss on sale of asset		$ (2,279)			$ 0	$ 0	$ (2,279)
Proceeds from sales of asset		$ 2,750