Goodwill & Other Identifiable Intangible Assets (Tables)

6 Months Ended

Jun. 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	(192		)	(89		)	—		(281		)
Balance as of June 30, 2013	$	19,699		$	6,571		$	60	$	26,330

Summary of the Company's identifiable intangible assets

		June 30, 2013
	Weighted Average	Gross Carrying		Foreign			Accumulated			Net Carrying
	Amortization Period	Amount		Exchange			Amortization			Amount
Amortized Intangible Assets:
Patents	20.0 Years	$	676	$	—		$	(570	)	$	106
Customer Relationships	15.9 Years	10,450		(254		)	(8,548		)	1,648
Product Certification	5.4 Years	7,905		(25		)	(4,590		)	3,290
Unpatented Technology	18.4 Years	3,183		—			(2,325		)	858
Licenses	20.0 Years	964		8			(204		)	768
Total	12.9 Years	$	23,178	$	(271	)	$	(16,237	)	$	6,670

		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

For the year ending December 31:
2014	$	1,990
2015	1,393
2016	1,114
2017	337
2018	138