Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill / Tradename

	Tradenames
(Table only in thousands)	2014			2013
Beginning balance	$	18,419		$	3,526
Acquisitions and related adjustments		1,730			14,775
Foreign currency adjustments		(383	)		118
	$	19,766		$	18,419

Intangible Assets - Finite Life

	2014						2013
(Table only in thousands) Intangible assets – finite life	Cost			Accum. Amort.			Cost		Accum. Amort
Patents	$	1,429		$	1,427		$	1,423	$	1,383
Employment agreements		733			461			733		213
Technology		8,677			2,412			8,677		752
Customer lists		59,017			9,094			40,816		3,458
Noncompetition agreements		1,118			34			—		—
Tradename		1,390			23			—		—
Foreign currency adjustments		(800	)		(285	)		858		90
	$	71,564		$	13,166		$	52,507	$	5,896

Segment [Member]

Goodwill / Tradename

(Table only in thousands)	Air Pollution Control Segment		Energy Segment			Fluid Handling and Filtration Segment		Totals
Balance of goodwill at December 31, 2012	$	12,932	$	6,386		$	230	$	19,548
2013 acquisitions		9,725		7,595			97,001		114,321
Foreign currency translation		—		193			—		193
Balance of goodwill at December 31, 2013		22,657		14,174			97,231		134,062
2014 acquisitions		30,881		3,757			—		34,638
Foreign currency translation		—		(1,153	)		—		(1,153	)
Balance of goodwill at December 31, 2014	$	53,538	$	16,778		$	97,231	$	167,547