Acquisitions - Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jul. 08, 2014
Business Acquisition [Line Items]
GOODWILL	$ 2,929	$ 2,929
Path Logic [Member]
Business Acquisition [Line Items]
Current assets, including cash and cash equivalents			$ 1,722
Property, plant and equipment			577
Identifiable intangible assets - customer relationships			1,930
Long term deposits			28
GOODWILL			2,929
Total assets acquired			7,186
Current liabilities			(1,180)
Long-term liabilities			(98)
Net assets acquired			$ 5,908