Segment Information (Details 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Summary of assets by geographic region
Total Assets	$ 246,473	$ 259,952
United States [Member]
Summary of assets by geographic region
Total Assets	209,868	223,430
Malaysia [Member]
Summary of assets by geographic region
Total Assets	36,575	36,492
Other [Member]
Summary of assets by geographic region
Total Assets	$ 30	$ 30