Segment Information - Summary of Assets by Geographic Region (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 103,579	$ 119,242
United States [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	75,040	88,916
Malaysia [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	28,491	30,276
Other [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 48	$ 50