Goodwill & Other Identifiable Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2013

Goodwill & Other Identifiable Intangible Assets

Schedule of the changes in the carrying amounts of goodwill by segment

	Activated
	Carbon &
	Service			Equipment			Consumer
	Segment			Segment			Segment		Total
Balance as of December 31, 2012	$	20,310		$	6,660		$	60	$	27,030
Restructuring (Note 1)	(419		)	—			—		(419		)
Foreign exchange	(9		)	(65		)	—		(74		)
Balance as of September 30, 2013	$	19,882		$	6,595		$	60	$	26,537

Summary of identifiable intangible assets

		September 30, 2013
	Weighted Average	Gross Carrying		Foreign			Accumulated			Net Carrying
	Amortization Period	Amount		Exchange			Amortization			Amount
Amortized Intangible Assets:
Patents	20.0 Years	$	676	$	—		$	(581	)	$	95
Customer Relationships	15.9 Years	10,450		(218		)	(8,666		)	1,566
Product Certification	5.4 Years	7,905		(18		)	(4,917		)	2,970
Unpatented Technology	18.4 Years	3,183		—			(2,390		)	793
Licenses	20.0 Years	964		7			(216		)	755
Total	12.9 Years	$	23,178	$	(229	)	$	(16,770	)	$	6,179

		December 31, 2012
	Weighted Average	Gross Carrying		Foreign			Accumulated			Net Carrying
	Amortization Period	Amount		Exchange			Amortization			Amount
Amortized Intangible Assets:
Patents	20.0 Years	$	676	$	—		$	(548	)	$	128
Customer Relationships	15.9 Years	10,450		(223		)	(8,311		)	1,916
Product Certification	5.4 Years	7,369		(3		)	(3,917		)	3,449
Unpatented Technology	18.4 Years	3,183		—			(2,191		)	992
Licenses	20.0 Years	964		119			(180		)	903
Total	13.1 Years	$	22,642	$	(107	)	$	(15,147	)	$	7,388

Schedule of estimated amortization expense during next five years

For the year ending December 31:
2014	$	2,032
2015	1,366
2016	1,136
2017	337
2018	139