Segment Reporting (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Total revenues information by geographic area
Total product revenues	$ 141,058	$ 125,639	$ 406,737	$ 238,572
Total product revenues in percentage	100.00%	100.00%	100.00%	100.00%
United States [Member]
Total revenues information by geographic area
Total product revenues	60,012	46,962	173,223	82,569
Total product revenues in percentage	42.00%	37.00%	43.00%	35.00%
China [Member]
Total revenues information by geographic area
Total product revenues	17,773	12,619	43,510	18,761
Total product revenues in percentage	13.00%	10.00%	11.00%	8.00%
Germany [Member]
Total revenues information by geographic area
Total product revenues	15,694	15,397	49,405	24,024
Total product revenues in percentage	11.00%	12.00%	12.00%	10.00%
Japan [Member]
Total revenues information by geographic area
Total product revenues	10,716	7,539	24,014	16,618
Total product revenues in percentage	8.00%	6.00%	6.00%	7.00%
South Korea [Member]
Total revenues information by geographic area
Total product revenues	10,294	8,922	31,213	28,246
Total product revenues in percentage	7.00%	7.00%	8.00%	12.00%
Canada [Member]
Total revenues information by geographic area
Total product revenues	4,375	3,504	12,959	7,705
Total product revenues in percentage	3.00%	3.00%	3.00%	3.00%
Hungary [Member]
Total revenues information by geographic area
Total product revenues	3,581	3,674	9,527	5,363
Total product revenues in percentage	3.00%	3.00%	2.00%	2.00%
Czech Republic [Member]
Total revenues information by geographic area
Total product revenues	3,407	4,853	12,102	7,601
Total product revenues in percentage	2.00%	4.00%	3.00%	3.00%
Mexico [Member]
Total revenues information by geographic area
Total product revenues	2,782	5,675	11,467	18,677
Total product revenues in percentage	2.00%	5.00%	3.00%	8.00%
Other [Member]
Total revenues information by geographic area
Total product revenues	$ 12,424	$ 16,494	$ 39,307	$ 29,008
Total product revenues in percentage	9.00%	13.00%	10.00%	12.00%