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Segment Reporting and Geographic Information (Tables)

3 Months Ended

Mar. 31, 2015

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

			Three Months Ended March 31,
			2015	2014
Revenues
	Heavy Duty Diesel Systems		$ 4,152	$ 6,275
	Catalyst		6,811	5,811
	Eliminations (1)		(622)	(507)
		Total	$ 10,341	$ 11,579

Income (loss) from operations
	Heavy Duty Diesel Systems		$ (378)	$ 296
	Catalyst		(558)	222
	Corporate		(1,710)	(1,974)
	Eliminations (1)		(68)	(20)
		Total	$ (2,714)	$ (1,476)

(1) Elimination of Catalyst revenue and profit in ending inventory related to sales to Heavy Duty Diesel Systems.

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

	Three Months Ended
	March 31,
	2015	2014
United States	$ 6,347	$ 5,414

Canada	3,122	5,027
Europe	872	1,138
Total international	3,994	6,165
Total revenues	$ 10,341	$ 11,579

- Definition

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.

+ References+ Details