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Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Years Ended December 31,
	2012		2011
Net sales
Heavy Duty Diesel Systems	$ 40,666		$ 47,460
Catalyst	24,322		20,789
Corporate	─		─
Eliminations (1)	(4,451)		(6,642)
Total	$ 60,537		$ 61,607
Income (loss) from operations
Heavy Duty Diesel Systems	$ (602)		$ 1,449
Catalyst	(1,816)		(970)
Corporate	(5,469)		(6,677)
Eliminations	50		(325)
Total	$ (7,837)		$ (6,523)

Depreciation and amortization
Heavy Duty Diesel Systems	$ 1,238		$ 1,536
Catalyst	192		212
Corporate	─		─
Total	$ 1,430		$ 1,748

Capital expenditures
Heavy Duty Diesel Systems	$ 135		$ 435
Catalyst	101		184
Corporate	─		─
Total	$ 236		$ 619

	December 31,
	2012		2011
Total assets
Heavy Duty Diesel Systems	$ 40,182		$ 45,660
Catalyst	37,637		35,626
Discontinued operations	1,172		1,177
Eliminations	(43,550)		(41,348)
Total	$ 35,441		$ 41,115

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

	Years Ended December 31,
	2012		2011
United States	$ 25,895		$ 20,960
Canada	22,152		25,328
United Kingdom	6,691		8,172
Sweden	5,799		7,147
Total	$ 60,537		$ 61,607

Reconciliation of Assets from Segment to Consolidated [Table Text Block]

	Fixed Assets				Total Assets
	2012		2011		2012		2011
United States	$ 616		$ 960		$ 15,353		$ 12,409
Canada	1,278		1,438		15,681		17,808
United Kingdom	─		95		1,392		8,014
Sweden	106		156		3,015		2,884
Total	$ 2,000		$ 2,649		$ 35,441		$ 41,115

Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries.

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Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

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