Segment Information - Summary of Assets by Geographic Region (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	$ 202,695	$ 248,096
United States [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	157,572	210,781
Malaysia [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	45,086	37,280
Other [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total Assets	$ 37	$ 35