Segment Reporting (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Segment Reporting (Textual) [Abstract]
Reimbursed research and development costs	$ 656	$ 235	$ 1,763	$ 581
Advanced Technology [Member]
Segment Reporting (Textual) [Abstract]
Reimbursed research and development costs	656	235	1,763	581
W.E.T. [Member]
Segment Reporting (Textual) [Abstract]
W.E.T. facility product revenues	$ 6,534	$ 4,426	$ 20,650	$ 4,426