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Inventories	3 Months Ended
	Mar. 31, 2013
Inventories [Abstract]
Inventory Disclosure [Text Block]	Inventories Inventories, representing work in process for costs incurred on projects at PCT that have not been completed, were $1.5 million and $1.1 million as of March 31, 2013 and December 31, 2012, respectively. The Company also has deferred revenue of approximately $1.6 million and $1.2 million of billings received as of March 31, 2013 and December 31, 2012, respectively, related to these contracts.

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Inventories [Text Block]

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